CN116234051A

CN116234051A - Random access method and related equipment

Info

Publication number: CN116234051A
Application number: CN202111457155.4A
Authority: CN
Inventors: 雷珍珠
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2023-06-06
Also published as: WO2023098874A1

Abstract

The embodiment of the application provides a random access method and related equipment, and relates to the technical field of communication, wherein the method comprises the following steps: receiving first carrier configuration information and second carrier configuration information sent by network side equipment; sending a random access request message Msg1 to network side equipment; if the terminal equipment is first type terminal equipment, receiving a random access response message Msg2 sent by the network side equipment based on the first carrier configuration information; if the terminal equipment is the second type terminal equipment, receiving the Msg2 sent by the network side equipment based on the second carrier configuration information. The method provided by the embodiment of the invention can realize that the terminal equipment indicates the terminal type to the network, and enables the terminal equipment without GNSS capability to determine the starting position of the random access response window, thereby realizing effective random access.

Description

Random access method and related equipment

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a random access method and related equipment.

Background

In a Non-terrestrial network (Non-Terrestrial Networks, NTN), for a terminal device capable of global navigation satellite system (Global Navigation Satellite System, GNSS), the round trip propagation delay between the terminal device and the satellite can be determined according to ephemeris information and GNSS capability, and further according to a common Timing Advance (TA) indicated by the network and a media access control layer control information element (MAC Control Element, MAC CE) validation delay. Finally, the terminal equipment determines the starting position of a random access response window (RAR window) according to the determined round trip propagation delay between the terminal equipment and the base station, and monitors a physical downlink control channel (Physical Downlink Control Channel, PDCCH) in the random access response window. However, for terminal devices that are not GNSS capable, a method is needed to determine the starting position of the random access response window and the size of the random access response window.

Disclosure of Invention

The embodiment of the application provides a random access method and related equipment, so as to provide a random access mode, and enable terminal equipment without GNSS capability to determine the starting position of a random access response window, thereby avoiding the problem that the terminal equipment without GNSS capability cannot effectively perform random access.

In a first aspect, an embodiment of the present application provides a random access method, applied in a terminal device, where the terminal device is a first type terminal device or a second type terminal device, the first type terminal device does not have GNSS capability, and the second type terminal device has GNSS capability, where the method includes:

receiving first carrier configuration information and second carrier configuration information sent by network side equipment;

sending a random access request message Msg1 to network side equipment;

if the terminal equipment is first type terminal equipment, receiving a random access response message Msg2 sent by the network side equipment based on the first carrier configuration information;

if the terminal equipment is second-type terminal equipment, receiving Msg2 sent by the network side equipment based on second carrier configuration information;

the first carrier configuration information is used for indicating first offset information and/or first response window information corresponding to the first type terminal equipment; the second carrier configuration information is used to indicate second response window information corresponding to the second type terminal device.

In the embodiment of the application, the terminal equipment without GNSS capability performs random access based on the carrier information of the network configuration, so that the terminal equipment without GNSS capability can determine the starting position of the random access response window, and the problem that the terminal equipment without GNSS capability cannot perform random access effectively can be avoided.

For efficient reception of Msg2, in one possible implementation, the terminal devices are of a first type,

the first carrier configuration information is used for indicating first offset information and/or first response window information corresponding to the first type terminal equipment, and specifically includes:

the first carrier configuration information is used for indicating first offset information and first response window information corresponding to the first type terminal equipment;

receiving Msg2 sent by the network device based on the first carrier configuration information includes:

determining a first offset value and a duration value of a first response window based on the first carrier configuration information, determining a first starting position based on the first offset value, and receiving Msg2 sent by the network side equipment within the duration range of the first response window from the first starting position; wherein the first starting position is used to characterize the starting position of the first response window.

In order to improve the efficiency of the configuration, in one possible implementation manner, the method further includes:

the first carrier configuration information comprises first carrier member set information, first offset information corresponding to the first carrier member set and first response window information corresponding to the first carrier member set, wherein the first carrier member set information comprises indexes of one or more carrier members; the second carrier configuration information includes second carrier member set information including indexes of one or more carrier members.

In order to reduce the signaling overhead of the network, in one possible implementation,

the first response window information comprises a unique duration value of a first response window corresponding to the first carrier member set; or alternatively, the first and second heat exchangers may be,

the first response window information includes a duration value of a first response window corresponding to each carrier member in the first set of carrier members.

the first offset information comprises a unique first offset value corresponding to the first carrier member set; or alternatively, the first and second heat exchangers may be,

the first offset information comprises a unique first offset difference value corresponding to the first carrier member set; the unique first offset value is a difference value of the unique first offset value corresponding to the first carrier member set relative to a preset first reference value.

the first offset information includes a first offset value corresponding to each carrier member in the first set of carrier members; or alternatively, the first and second heat exchangers may be,

the first offset information includes a first offset difference value corresponding to each carrier member in the first set of carrier members; the first offset value corresponding to one carrier member in the first carrier member set is a difference value of the first offset value corresponding to the carrier member in the first carrier member set relative to a preset second reference value.

the first offset information comprises a unique first offset value corresponding to the first carrier member set and a second offset difference value corresponding to each carrier member in the first carrier member set; the second offset difference value corresponding to one carrier member in the first carrier member set is a difference value of the first offset value of the carrier member in the first carrier member set relative to the unique first offset value.

In order to effectively send Msg1 to the network side device, in one possible implementation manner, sending Msg1 to the network side device includes:

If the terminal equipment is first type terminal equipment, selecting a first carrier wave to send Msg1 to the network side equipment;

if the terminal equipment is the second type terminal equipment, selecting a second carrier wave to send Msg1 to the network side equipment.

To increase the flexibility of carrier selection, in one possible implementation,

all carrier members in the first carrier member set form a first carrier set, the first carrier is selected from the first carrier set, all carrier members in the second carrier member set form a second carrier set, and the second carrier is selected from the second carrier set; the first carrier wave set is orthogonal to the second carrier wave set, and the first carrier wave is different from the second carrier wave.

all carrier members in the first carrier member set form a fourth carrier set, all carrier members in the second carrier member set form a third carrier set, and the second carrier is selected from the third carrier set and/or the fourth carrier set; the first carrier is selected from a fourth carrier set;

wherein the third set of carriers is orthogonal to the fourth set of carriers.

In order to improve the flexibility of configuration, in one possible implementation manner, the method further includes:

Receiving carrier access weight configuration information or carrier access weight configuration information sent by network side equipment; the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier set, and the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier.

In order to reasonably allocate the access proportion of the first type of terminal equipment and the second type of terminal equipment, load splitting is implemented, wherein in one possible implementation,

the second carrier is selected by the terminal equipment based on the access weight of the carrier set; the third carrier set has a first access weight, and the fourth carrier set has a second access weight; or alternatively, the first and second heat exchangers may be,

the second carrier is selected by the terminal equipment based on the access weight of the carrier; each carrier member in the fourth carrier set has a third access weight corresponding to the first type of terminal device and a fourth access weight corresponding to the second type of terminal device.

and receiving physical random access channel configuration information sent by the network side equipment, wherein the physical random access channel configuration information is used for configuring a first random access lead code and/or a first random access time of the first type terminal equipment and a second random access lead code and/or a second random access time of the second type terminal equipment.

In order to effectively identify the type of terminal device at the network side, in one possible implementation,

if the terminal equipment is the first type terminal equipment, the random access preamble and/or the random access opportunity used by the terminal equipment are the first random access preamble and/or the first random access opportunity; or alternatively, the first and second heat exchangers may be,

if the terminal equipment is the second type terminal equipment, the random access preamble and/or the random access time used by the terminal equipment is the second random access preamble and/or the second random access time;

the first random access preamble code and the second random access preamble code are different, and the first random access time is different from the second random access time.

In a second aspect, an embodiment of the present application further provides a random access method, applied to a terminal device, where the method includes:

if the terminal equipment is first type terminal equipment, the terminal equipment selects a first carrier wave to send Msg1 to the network side equipment; the first carrier wave has a duration value and a first offset value of a first response window corresponding to the first carrier wave, the first response window is used for representing a random access response window of first type terminal equipment, and the first type terminal equipment does not have GNSS capability;

The terminal equipment determines a first starting position based on the first offset value, and receives a random access response message Msg2 sent by the network side equipment in the duration range of a first response window from the first starting position; wherein the first starting position is used to characterize the starting position of the first response window.

In a third aspect, an embodiment of the present application further provides a random access method, applied to a terminal device, where the method includes:

if the terminal equipment is second type terminal equipment, the terminal equipment selects a second carrier wave to send Msg1 to the network side equipment; the second carrier has a duration value of a second response window corresponding to the second carrier, the second response window is used for representing a random access response window of a second type of terminal equipment, and the second type of terminal equipment has GNSS capability;

the terminal equipment acquires a second initial position, and receives Msg2 sent by the network side equipment in the duration range of a second response window from the second initial position; the second starting position is used to characterize the starting position of the second response window.

In a fourth aspect, an embodiment of the present application further provides a random access method, which is applied to a network side device, where the method includes:

sending the first carrier configuration information and the second carrier configuration information to the terminal equipment;

Receiving Msg1 sent by terminal equipment;

determining the type of the terminal equipment based on the Msg1, wherein the terminal equipment is first type terminal equipment or second type terminal equipment, the first type terminal equipment does not have GNSS (Global navigation satellite System) capability, and the second type terminal equipment has GNSS capability;

if the type of the terminal equipment is the first type terminal equipment, determining a duration value of a first response window based on the type of the terminal equipment; the first response window is used for representing a random access response window of the first type of terminal equipment;

transmitting Msg2 to the terminal equipment based on the duration value of the first response window;

In one possible implementation manner, the method further includes:

if the terminal device is a first type terminal device, receiving Msg1 sent by the terminal device, including: receiving an Msg1 sent by a terminal device on a first carrier;

if the terminal device is a second type terminal device, receiving Msg1 sent by the terminal device, including: and receiving the Msg1 sent by the terminal equipment on the second carrier.

In one possible implementation manner, all carrier members in the first carrier member set form a first carrier set, the first carrier is selected in the first carrier set, all carrier members in the second carrier member set form a second carrier set, the second carrier is selected in the second carrier set, the first carrier set is orthogonal to the second carrier set, the first carrier is different from the second carrier, and determining the type of the terminal device based on the Msg1 includes:

the type of the terminal device is determined based on the carrier set in which the carrier member used by Msg1 is located.

In one possible implementation manner, all carrier members in the first carrier member set form a fourth carrier set, all carrier members in the second carrier member set form a third carrier set, the first carrier is selected in the fourth carrier set, the second carrier is selected in the third carrier set and/or the fourth carrier set, and the third carrier set is orthogonal to the fourth carrier set.

In one possible implementation manner, the method further includes:

transmitting physical random access channel configuration information to terminal equipment; the physical random access channel configuration information is used for configuring a first random access preamble and/or a first random access opportunity of the first type of terminal equipment, and a second random access preamble and/or a second random access opportunity of the second type of terminal equipment, wherein the first random access preamble and the second random access preamble are different, and the first random access opportunity and the second random access opportunity are different.

In one possible implementation manner, determining the type of the terminal device based on the Msg1 includes:

the type of the terminal device is determined based on the random access occasion used by the terminal device to transmit the Msg1 and/or the random access preamble included in the Msg 1.

In one possible implementation manner, the method further includes:

sending carrier access weight configuration information or carrier access weight configuration information to terminal equipment; the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier set, and the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier.

In one possible implementation manner, the first response window information includes a duration value of a unique first response window corresponding to the first carrier member set; or alternatively, the first and second heat exchangers may be,

In one possible implementation manner, the method further includes:

a preset first reference value is sent to terminal equipment;

the first offset information comprises a unique first offset difference value corresponding to the first carrier member set; the unique first offset difference value is a difference value of the unique first offset value corresponding to the first carrier member set relative to a preset first reference value.

In one possible implementation manner, the first offset information includes a unique first offset value corresponding to the first carrier member set; the unique first offset value is determined based on the round trip propagation delay between the nearest location to the satellite in the cell coverage area and the network side device.

In one possible implementation manner, the method further includes:

a preset second reference value is sent to the terminal equipment;

the first offset information comprises a first offset difference value corresponding to each carrier member in the first carrier member set; the first offset value corresponding to one carrier member in the first carrier member set is the difference value of the first offset value corresponding to the carrier member in the first carrier member set relative to a preset second reference value.

In one of the possible implementations of this method,

the first offset information includes a first offset value corresponding to each carrier member in the first set of carrier members;

the first offset value corresponding to each carrier member in the first carrier member set is determined according to the round trip propagation delay between the position closest to the satellite in the coverage area of the beam associated with the carrier member in the first carrier member set and the network side equipment.

In one possible implementation manner, the first offset information includes a unique first offset value corresponding to the first carrier member set and a second offset difference value corresponding to each carrier member in the first carrier member set; the second offset difference value corresponding to one carrier member in the first carrier member set is a difference value of the first offset value of the carrier member in the first carrier member set relative to the unique first offset value.

In a fifth aspect, embodiments of the present application provide a chip configured to perform the methods of the first to fourth aspects.

In a sixth aspect, an embodiment of the present application provides a terminal device, including:

and a memory for storing computer program code, the computer program code comprising instructions for causing the terminal device to perform the methods of the first to third aspects when the terminal device reads the instructions from the memory.

In a seventh aspect, an embodiment of the present application further provides a network side device, including:

and a memory, wherein the memory is configured to store computer program code, and the computer program code includes instructions, when the network side device reads the instructions from the memory, to cause the network side device to execute the method according to the fourth aspect.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium having a computer program stored therein, which when run on a computer, causes the computer to perform the methods of the first to fourth aspects.

In a ninth aspect, embodiments of the present application provide a computer program for performing the methods of the first to fourth aspects when the computer program is executed by a computer.

In one possible design, the program in the sixth aspect may be stored in whole or in part on a storage medium packaged with the processor, or in part or in whole on a memory not packaged with the processor.

In a tenth aspect, there is provided a terminal device comprising therein respective functional units for performing the methods of the first to fourth aspects described above, by which the terminal device implements the methods provided in the first to fourth aspects described above.

An eleventh aspect provides a network-side device, where the network-side device includes respective functional units for performing the method according to the fourth aspect, and the network-side device implements the method according to the fourth aspect through the respective functional units.

In a twelfth aspect, there is provided a random access system comprising: the terminal device and/or the network side device.

Drawings

Fig. 1 is a schematic architecture diagram of a non-terrestrial network scenario provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a random access response window provided in an embodiment of the present application;

fig. 3 is a schematic hardware structure of a terminal device according to an embodiment of the present application;

fig. 4 is a flow chart of a random access method provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of an embodiment of a random access device provided in the present application;

fig. 6 is a schematic structural diagram of another embodiment of a random access device provided in the present application;

fig. 7 is a schematic structural diagram of still another embodiment of a random access device provided in the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the narrowband internet of things (NB-IOT), a single-frequency point cell has a bandwidth of 180kHz, where the remaining traffic channel capacity is small, except for the overhead of narrowband primary synchronization signals (Narrowband Primary Synchronization Signal, NPSS), narrowband secondary synchronization signals (Narrowband Secondary Synchronization Signal, NSSS) and system message blocks (System Information Block, SIB). In order to support a large number of terminals, a plurality of frequency points are required to increase network capacity. Besides anchor carriers (anchor carriers) containing NPSS, NSSS and narrowband physical broadcast channels (Narrowband Physical Broadcast Channel, NPBCH), the cell may also contain several non-anchor carriers (non-anchor carriers) not containing NPSS, NSSS and NPBCH.

One cell comprises an anchor carrier and a plurality of non-anchor carriers, the spectrum bandwidth of each carrier is 180kHz, and the maximum spectrum span of all carriers in the cell is not more than 20MHz. Wherein there is and only one downlink carrier in the multi-carrier cell supports simultaneous bearers NPSS, NSSS, NPBCH, narrowband physical downlink control channel (Narrowband Physical Downlink Control Channel, NPDCCH) and narrowband physical downlink shared channel (Narrowband Physical Downlink Shared Channel, NPDSCH) channels, then the downlink carrier is referred to as an anchor carrier. The terminal device needs to monitor NPSS, NSSS, NPBCH, NPDCCH and NPDSCH information at the anchor carrier. There may be several downlink carriers in the multi-carrier cell that only carry NPDCCH, NPDSCH, but not NPSS, NSSS and NPBCH channels, and the downlink carriers are referred to as non-anchor carriers. The terminal device may perform data transmission on a non-anchor carrier. In addition, before the terminal device enters the connected state, the network designates a carrier for subsequent downlink data transmission through Msg4 in the random access process. The terminal equipment can monitor paging on the non-anchor carrier in idle state.

The method provided by the application can be applied to a non-terrestrial network scenario, and referring to fig. 1, fig. 1 is a schematic diagram of a non-terrestrial network scenario provided by an embodiment of the application.

As shown in fig. 1, the non-terrestrial network scenario includes satellites, terminal equipment, gateway stations (also referred to as ground stations). The wireless link between the satellite and the terminal device may be referred to as a service link, the wireless link between the satellite and the gateway station may be referred to as a feedback link, and an inter-satellite link may exist between the satellite and the satellite for providing a data backhaul.

Typically, one or several gateway stations of the non-terrestrial network scenario need to be connected to a public data network (public data network, PDN), such as the network in fig. 1.

The terminal device may also be referred to as a User Equipment (UE) or a terminal, and the terminal device may be a mobile phone or a notebook, for example.

In some embodiments, a base station in a non-terrestrial network scenario may be located on land, e.g., a gateway station in fig. 1 may be base station-enabled. At this time, the satellite will act as a relay between the terminal device and the gateway station, receive the data sent by the terminal device through the service link, and forward the data to the gateway station on the ground.

In other embodiments, the base station in a non-terrestrial network scenario may also be located on a satellite, e.g., the satellite of fig. 1 may be base station capable. In this case, the satellite having the base station function may be considered as one of an evolved NodeB (eNB) and a 5G base station (gNB).

In this embodiment of the present application, the terminal device may communicate with the network device, and the network device may be understood as a device capable of performing data processing and network communication. Illustratively, the network device may include a base station (e.g., eNB, gNB, etc.) or an access device of the network, etc., which is not limited in this application. For convenience of description, the method related to the present application will be exemplarily described below by taking a network device as a satellite having a base station function as an example.

In a non-terrestrial network, one cell may include one or more beams. As shown in fig. 1, one cell includes a plurality of beams. Due to the fast movement of the satellites, the terminal equipment needs to perform beam switching frequently. Future internet of things devices may be accessed through satellite networks, and therefore, a set of beam management mechanisms is required (current terrestrial internet of things protocols do not support beam management mechanisms). Currently, a beam management method is performed by a carrier switching method, that is, a cell may include multiple beams, where different beams correspond to different carriers, and the beam switching is implemented by carrier switching.

In a non-terrestrial network, propagation delays between different locations within a cell or beam coverage area and network devices are different. The difference between the propagation delay corresponding to a location within a cell or beam coverage area and the propagation delay corresponding to the location closest to the network device may be referred to as the differential delay corresponding to that location. It will be appreciated that in a non-terrestrial network, the satellite forms a beam/cell with a relatively large coverage area, since the satellite is relatively far from the ground, resulting in a relatively large differential delay in the coverage area of the beam/cell. For example, the difference between the air propagation delay between the location furthest from the network device and the air propagation delay between the location closest to the network device and the network device within a cell or beam coverage area may be referred to as the maximum differential delay for the cell. If the maximum differential delay is calculated for the coverage of a certain cell, the maximum differential delay is the maximum differential delay at the cell level. It is understood that the maximum differential time delay for different cells may be the same or different. If the maximum differential delay is calculated for the coverage area of a certain beam, the maximum differential delay is the maximum differential delay of the beam level. It is understood that the maximum differential time delay corresponding to different beam coverage areas may be the same or different.

The random access process of the narrowband Internet of things (NB-IOT) consists of four message sending and receiving steps of Msg1, msg2, msg3 and Msg 4. The Msg1 is a random access request message, the Msg1 includes a preamble of a terminal device, the number of repetitions of transmission of the Msg1 is at most 128 at present, the terminal device obtains the current cell signal quality (i.e., RSRP) through a narrowband reference signal (Narrow-band Reference Signal, NRS) before transmitting the Msg1, and then compares the measured RSRP value with a related threshold value configured by the network, thereby determining the current coverage Level (i.e., CE Level). Different CE levels correspond to different physical random access channel (Physical Random Access Channel, PRACH) configurations (i.e., the repetition number of Msg 1), the terminal device may determine the repetition number of transmitting Msg1 according to its own determined CE Level and randomly select an uplink carrier configured with the corresponding PRACH configuration to transmit Msg1, if the first transmission of Msg1 fails, the terminal device may further upgrade the CE Level (i.e., increase the repetition number of Msg 1) and retry until Msg2 is successfully received or the repetition number (PRACH resource) of Msg1 corresponding to all CE levels is tried.

When the base station receives the Msg1, it indicates the terminal device to send the Msg3 resource and related parameters, for example, including subcarrier indication, msg3 repetition number, modulation and coding strategy (Modulation and Coding Scheme, MCS) indication, etc. through the random access response message (Msg 2). The random access response information (Msg 2) is scheduled by the downlink control information (Downlink Control Information, DCI), and when receiving Msg2, the terminal device first receives the downlink control information (i.e. RA-RNTI scrambled DCI, which indicates transmission parameters of Msg2, including reception resource location, subcarrier indication, msg3 repetition number, MCS indication, etc.), and then receives Msg2 according to the downlink control information. Fig. 2 is a timing diagram of the terminal device transmitting Msg1 and receiving Msg2. As shown in fig. 2, after the terminal device finishes transmitting the Msg1, the starting position of the random access response window may be determined according to the starting position offset, where the random access response window may be used to receive the Msg2 transmitted by the network device, and it may be understood that the random access response window has a certain duration, so that the terminal device may receive, from the starting position of the random access response window, the Msg2 transmitted by the network device within the duration range of the random access response window.

The terminal device may send Msg3 according to the related scheduling information of Msg3 indicated by the random access response message, after the terminal device sends Msg3, it will use the unique identifier carried in Msg3 to monitor the PDCCH, and after the PDCCH is successfully decoded, it receives the corresponding Msg4 content according to the DCI information carried by the PDCCH (Msg 4 is scheduled by DCI).

In non-terrestrial networks, there is a significant air propagation delay between the terminal device and the base station (e.g., eNB in a 4G network or gNB in a 5G network). After the terminal equipment sends the Msg1, the terminal equipment needs to wait for a period of time to receive the random access response issued by the base station. If the terminal equipment starts the random access response window immediately after the Msg1 is sent, and monitors the PDCCH, the terminal equipment can execute invalid PDCCH monitoring, and the power consumption of the terminal equipment is wasted. In order to reduce the power consumption of the terminal device, in the current protocol, for the terminal device with GNSS, the round trip propagation delay between the terminal device and the satellite can be determined according to the ephemeris information and the GNSS capability, and then the round trip propagation delay between the terminal device and the base station is determined according to the network indication public TA and the MAC CE effective delay. And finally, the terminal equipment determines the starting position of the random access response window according to the determined round trip propagation delay between the terminal equipment and the base station. For example, the starting position may be the end time of Msg 1+the round trip propagation delay between the terminal device to the base station. However, for terminal devices that are not GNSS capable, a method is needed to determine the starting position of the random access response window and the size of the random access response window.

Based on the above-mentioned problems, the embodiments of the present application provide a random access method applied to the terminal device 100 and the network side device. The terminal device 100 may be a mobile terminal. A mobile terminal may also be called a terminal device, user Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. The embodiment of the present application does not particularly limit the specific form of the terminal device 100 performing the technical solution.

An exemplary terminal device provided in the following embodiments of the present application is first described below in connection with fig. 3. Fig. 3 shows a schematic structural diagram of the terminal device 100.

The terminal device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identity module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It is to be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the terminal device 100. In other embodiments of the present application, terminal device 100 may include more or less components than illustrated, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

In some embodiments, the processor 110 may include one or more interfaces. The interfaces may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interface, a mobile industry processor interface (mobile industry processor interface, MIPI), a general-purpose input/output (GPIO) interface, a subscriber identity module (subscriber identitymodule, SIM) interface, and/or a universal serial bus (universal serial bus, USB) interface, among others.

The I2C interface is a bi-directional synchronous serial bus comprising a serial data line (SDA) and a serial clock line (derail clock line, SCL). In some embodiments, the processor 110 may contain multiple sets of I2C buses. The processor 110 may be coupled to the touch sensor 180K, charger, flash, camera 193, etc., respectively, through different I2C bus interfaces. For example: the processor 110 may be coupled to the touch sensor 180K through an I2C interface, so that the processor 110 and the touch sensor 180K communicate through an I2C bus interface to implement a touch function of the terminal device 100.

The I2S interface may be used for audio communication. In some embodiments, the processor 110 may contain multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 via an I2S bus to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through the I2S interface, to implement a function of answering a call through the bluetooth headset.

PCM interfaces may also be used for audio communication to sample, quantize and encode analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface. In some embodiments, the audio module 170 may also transmit audio signals to the wireless communication module 160 through the PCM interface to implement a function of answering a call through the bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus for asynchronous communications. The bus may be a bi-directional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 110 with the wireless communication module 160. For example: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through a UART interface, to implement a function of playing music through a bluetooth headset.

The MIPI interface may be used to connect the processor 110 to peripheral devices such as a display 194, a camera 193, and the like. The MIPI interfaces include camera serial interfaces (camera serial interface, CSI), display serial interfaces (display serial interface, DSI), and the like. In some embodiments, processor 110 and camera 193 communicate through a CSI interface to implement the photographing function of terminal device 100. The processor 110 and the display 194 communicate via a DSI interface to implement the display function of the terminal device 100.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal or as a data signal. In some embodiments, a GPIO interface may be used to connect the processor 110 with the camera 193, the display 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, an MIPI interface, etc.

The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the terminal device 100, or may be used to transfer data between the terminal device 100 and a peripheral device. And can also be used for connecting with a headset, and playing audio through the headset. The interface may also be used to connect other terminal devices, such as AR devices, etc.

It should be understood that the interfacing relationship between the modules illustrated in the embodiment of the present invention is only illustrative, and does not constitute a structural limitation of the terminal device 100. In other embodiments of the present application, the terminal device 100 may also use different interfacing manners, or a combination of multiple interfacing manners in the foregoing embodiments.

The charge management module 140 is configured to receive a charge input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charge management module 140 may receive a charging input of a wired charger through the USB interface 130. In some wireless charging embodiments, the charge management module 140 may receive wireless charging input through a wireless charging coil of the terminal device 100. The charging management module 140 may also supply power to the terminal device through the power management module 141 while charging the battery 142.

The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 to power the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be configured to monitor battery capacity, battery cycle number, battery health (leakage, impedance) and other parameters. In other embodiments, the power management module 141 may also be provided in the processor 110. In other embodiments, the power management module 141 and the charge management module 140 may be disposed in the same device.

The wireless communication function of the terminal device 100 can be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the terminal device 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied to the terminal device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through an audio device (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), GNSS, frequency Modulation (FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc., applied to the terminal device 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments, antenna 1 and mobile communication module 150 of terminal device 100 are coupled, and antenna 2 and wireless communication module 160 are coupled, such that terminal device 100 may communicate with a network and other devices via wireless communication techniques. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a Beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) and/or a satellite based augmentation system (satellite based augmentation systems, SBAS).

The terminal device 100 implements display functions through a GPU, a display screen 194, an application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos, and the like. The display 194 includes a display panel. The display panel may employ a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED) or an active-matrix organic light-emitting diode (matrix organic light emitting diode), a flexible light-emitting diode (flex), a mini, a Micro led, a Micro-OLED, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED), or the like. In some embodiments, the terminal device 100 may include 1 or N display screens 194, N being a positive integer greater than 1.

The terminal device 100 may implement a photographing function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP is used to process data fed back by the camera 193. For example, when photographing, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electric signal, and the camera photosensitive element transmits the electric signal to the ISP for processing and is converted into an image visible to naked eyes. ISP can also optimize the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in the camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a Complementary Metal Oxide Semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, which is then transferred to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV, or the like format. In some embodiments, the terminal device 100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process other digital signals besides digital image signals. For example, when the terminal device 100 selects a frequency bin, the digital signal processor is used to fourier transform the frequency bin energy, or the like.

Video codecs are used to compress or decompress digital video. The terminal device 100 may support one or more video codecs. In this way, the terminal device 100 can play or record video in various encoding formats, for example: dynamic picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

The NPU is a neural-network (NN) computing processor, and can rapidly process input information by referencing a biological neural network structure, for example, referencing a transmission mode between human brain neurons, and can also continuously perform self-learning. Applications such as intelligent awareness of the terminal device 100 may be implemented by the NPU, for example: image recognition, face recognition, speech recognition, text understanding, etc.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to realize expansion of the memory capability of the terminal device 100. The external memory card communicates with the processor 110 through an external memory interface 120 to implement data storage functions. For example, files such as music, video, etc. are stored in an external memory card.

The internal memory 121 may be used to store computer executable program code including instructions. The internal memory 121 may include a storage program area and a storage data area. The storage program area may store an application program (such as a sound playing function, an image playing function, etc.) required for at least one function of the operating system, etc. The storage data area may store data (such as audio data, phonebook, etc.) created during use of the terminal device 100, and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (universal flash storage, UFS), and the like. The processor 110 performs various functional applications of the terminal device 100 and data processing by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.

The terminal device 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playing, recording, etc.

The audio module 170 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or a portion of the functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also referred to as a "horn," is used to convert audio electrical signals into sound signals. The terminal device 100 can listen to music or to handsfree talk through the speaker 170A.

A receiver 170B, also referred to as a "earpiece", is used to convert the audio electrical signal into a sound signal. When the terminal device 100 receives a call or voice message, it is possible to receive voice by approaching the receiver 170B to the human ear.

Microphone 170C, also referred to as a "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or transmitting voice information, the user can sound near the microphone 170C through the mouth, inputting a sound signal to the microphone 170C. The terminal device 100 may be provided with at least one microphone 170C. In other embodiments, the terminal device 100 may be provided with two microphones 170C, and may implement a noise reduction function in addition to collecting sound signals. In other embodiments, the terminal device 100 may be further provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify the source of sound, implement directional recording functions, etc.

The earphone interface 170D is used to connect a wired earphone. The earphone interface 170D may be a USB interface 130 or a 3.5mm open mobile terminal platform (open mobile terminal platform, OMTP) standard interface, a american cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The pressure sensor 180A is of various types, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like. The capacitive pressure sensor may be a capacitive pressure sensor comprising at least two parallel plates with conductive material. The capacitance between the electrodes changes when a force is applied to the pressure sensor 180A. The terminal device 100 determines the intensity of the pressure according to the change of the capacitance. When a touch operation is applied to the display 194, the terminal device 100 detects the intensity of the touch operation according to the pressure sensor 180A. The terminal device 100 may also calculate the position of the touch from the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch location, but at different touch operation strengths, may correspond to different operation instructions. For example: and executing an instruction for checking the short message when the touch operation with the touch operation intensity smaller than the first pressure threshold acts on the short message application icon. And executing an instruction for newly creating the short message when the touch operation with the touch operation intensity being greater than or equal to the first pressure threshold acts on the short message application icon.

The gyro sensor 180B may be used to determine a motion gesture of the terminal device 100. In some embodiments, the angular velocity of the terminal device 100 about three axes (i.e., x, y, and z axes) may be determined by the gyro sensor 180B. The gyro sensor 180B may be used for photographing anti-shake. Illustratively, when the shutter is pressed, the gyro sensor 180B detects the angle of the shake of the terminal device 100, calculates the distance to be compensated by the lens module according to the angle, and allows the lens to counteract the shake of the terminal device 100 by the reverse motion, thereby realizing anti-shake. The gyro sensor 180B may also be used for navigating, somatosensory game scenes.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the terminal device 100 calculates altitude from barometric pressure values measured by the barometric pressure sensor 180C, aiding in positioning and navigation.

The magnetic sensor 180D includes a hall sensor. The terminal device 100 can detect the opening and closing of the flip cover using the magnetic sensor 180D. In some embodiments, when the terminal device 100 is a folder, the terminal device 100 may detect opening and closing of the folder according to the magnetic sensor 180D. And then according to the detected opening and closing state of the leather sheath or the opening and closing state of the flip, the characteristics of automatic unlocking of the flip and the like are set.

The acceleration sensor 180E can detect the magnitude of acceleration of the terminal device 100 in various directions (typically three axes). The magnitude and direction of gravity may be detected when the terminal device 100 is stationary. The method can also be used for identifying the gesture of the terminal equipment, and is applied to the applications such as horizontal and vertical screen switching, pedometers and the like.

A distance sensor 180F for measuring a distance. The terminal device 100 may measure the distance by infrared or laser. In some embodiments, the terminal device 100 may range using the distance sensor 180F to achieve fast focusing.

The proximity light sensor 180G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The terminal device 100 emits infrared light outward through the light emitting diode. The terminal device 100 detects infrared reflected light from a nearby object using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object in the vicinity of the terminal device 100. When insufficient reflected light is detected, the terminal device 100 may determine that there is no object in the vicinity of the terminal device 100. The terminal device 100 can detect that the user holds the terminal device 100 close to the ear to talk by using the proximity light sensor 180G, so as to automatically extinguish the screen for the purpose of saving power. The proximity light sensor 180G may also be used in holster mode, pocket mode to automatically unlock and lock the screen.

The ambient light sensor 180L is used to sense ambient light level. The terminal device 100 may adaptively adjust the brightness of the display 194 based on the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust white balance when taking a photograph. The ambient light sensor 180L may also cooperate with the proximity light sensor 180G to detect whether the terminal device 100 is in a pocket to prevent false touches.

The fingerprint sensor 180H is used to collect a fingerprint. The terminal device 100 can utilize the collected fingerprint characteristics to realize fingerprint unlocking, access an application lock, fingerprint photographing, fingerprint incoming call answering and the like.

The temperature sensor 180J is for detecting temperature. In some embodiments, the terminal device 100 performs a temperature processing strategy using the temperature detected by the temperature sensor 180J. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the terminal device 100 performs a reduction in the performance of a processor located near the temperature sensor 180J in order to reduce power consumption to implement thermal protection. In other embodiments, when the temperature is below another threshold, the terminal device 100 heats the battery 142 to avoid the low temperature causing the terminal device 100 to shut down abnormally. In other embodiments, when the temperature is below a further threshold, the terminal device 100 performs boosting of the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperatures.

The touch sensor 180K, also referred to as a "touch device". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is for detecting a touch operation acting thereon or thereabout. The touch sensor may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the terminal device 100 at a different location than the display 194.

The bone conduction sensor 180M may acquire a vibration signal. In some embodiments, bone conduction sensor 180M may acquire a vibration signal of a human vocal tract vibrating bone pieces. The bone conduction sensor 180M may also contact the pulse of the human body to receive the blood pressure pulsation signal. In some embodiments, bone conduction sensor 180M may also be provided in a headset, in combination with an osteoinductive headset. The audio module 170 may analyze the voice signal based on the vibration signal of the sound portion vibration bone block obtained by the bone conduction sensor 180M, so as to implement a voice function. The application processor may analyze the heart rate information based on the blood pressure beat signal acquired by the bone conduction sensor 180M, so as to implement a heart rate detection function.

The keys 190 include a power-on key, a volume key, etc. The keys 190 may be mechanical keys. Or may be a touch key. The terminal device 100 may receive key inputs, generating key signal inputs related to user settings and function controls of the terminal device 100.

The motor 191 may generate a vibration cue. The motor 191 may be used for incoming call vibration alerting as well as for touch vibration feedback. For example, touch operations acting on different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor 191 may also correspond to different vibration feedback effects by touching different areas of the display screen 194. Different application scenarios (such as time reminding, receiving information, alarm clock, game, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The indicator 192 may be an indicator light, may be used to indicate a state of charge, a change in charge, a message indicating a missed call, a notification, etc.

The SIM card interface 195 is used to connect a SIM card. The SIM card may be contacted and separated from the terminal apparatus 100 by being inserted into the SIM card interface 195 or by being withdrawn from the SIM card interface 195. The terminal device 100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface 195 may support Nano SIM cards, micro SIM cards, and the like. The same SIM card interface 195 may be used to insert multiple cards simultaneously. The types of the plurality of cards may be the same or different. The SIM card interface 195 may also be compatible with different types of SIM cards. The SIM card interface 195 may also be compatible with external memory cards. The terminal device 100 interacts with the network through the SIM card to realize functions such as call and data communication. In some embodiments, the terminal device 100 employs esims, namely: an embedded SIM card. The eSIM card can be embedded in the terminal device 100 and cannot be separated from the terminal device 100.

A random access method according to a first embodiment of the present application will now be described with reference to fig. 4.

Fig. 4 is a schematic flow chart of an embodiment of a random access method according to an embodiment of the present application, where the method includes:

in step 401, the network sends carrier configuration information to the terminal device.

Specifically, the network may be a network-side device, and the network-side device may be a satellite, that is, in the above scenario, the satellite may be regarded as a base station, and the terminal device communicates directly with the satellite (that is, the base station). The network side device may also include a satellite and a base station, where the satellite may serve as a relay, that is, the terminal device communicates with the base station on the ground through the relay of the satellite. For convenience of explanation, the network-side device will be hereinafter simply referred to as "network".

The types of the terminal device may include two types, for example, a GNSS type (which may also be referred to as a second type) and a non-GNSS type (which may also be referred to as a first type). Wherein a terminal device of the GNSS type may be used for characterizing a terminal device with GNSS capabilities and a terminal device of the non-GNSS type may be used for characterizing a terminal device without GNSS capabilities. The terminal device in the step 401 may be a GNSS type terminal device or a non-GNSS type terminal device.

The terminal device may select one carrier in the cell to initiate random access, for example, may send Msg1 to the network, where the Msg1 may include a preamble. Wherein Msg1 is carried by the PRACH. The network may group the carriers in the cell in advance, that is, may group the carriers in the cell based on the terminal device of the GNSS type and the terminal device of the non-GNSS type on the network side, thereby obtaining the carrier set.

After the network performs carrier grouping, the terminal device of GNSS type and the terminal device of non-GNSS type can respectively configure different carrier groups, and carriers in the carrier groups can be used to initiate a random access procedure. Wherein each carrier group may comprise one or more carriers. For convenience of explanation, the carrier set corresponding to the terminal device of the non-GNSS type may be hereinafter referred to as a "first carrier set", and the first carrier set may include one or more carriers; the set of carriers corresponding to the terminal device of the GNSS type may be referred to as a "second set of carriers", which may comprise one or more carriers. It is to be understood that the above-mentioned carrier groups may also be referred to as carrier sets, for example, the first carrier group may also be referred to as a first carrier set, and the second carrier group may also be referred to as a second carrier set, and for convenience of description, the carrier sets will be referred to as carrier sets hereinafter. For example, the non-GNSS type terminal device may select one carrier from the first carrier set to initiate random access, and for convenience of description, the carrier used by the non-GNSS type terminal device to transmit Msg1 will be referred to as "first carrier"; the GNSS type terminal apparatus may select one carrier from the second carrier set to initiate random access, and for convenience of description, the carrier used by the GNSS type terminal apparatus for transmitting Msg1 will be referred to as "second carrier" hereinafter.

The information for configuring the carrier group (e.g., the first carrier configuration information and the second carrier configuration information) may be sent by the network to the terminal device. For example, the network may send, to the terminal device, first carrier configuration information and second carrier configuration information through system information or RRC dedicated signaling, where the first carrier configuration information may include first carrier member set information, and the first carrier member set information may include indexes of one or more carrier members (for example, indexes of carrier members in the first carrier group); the second carrier configuration information may include second carrier member set information, which may include indexes of one or more carrier members (e.g., indexes of carrier members in the second carrier group), which may be used to identify identities of carrier members (e.g., to distinguish carrier members). It can be appreciated that the first carrier may be selected from a first carrier group, and the second carrier may be selected from a second carrier group; the first carrier group may be composed of one or more carrier members in the first carrier configuration information transmitted by the network, and the second carrier group may be composed of one or more carrier members in the second carrier configuration information transmitted by the network. If the first carrier group is composed of all carrier members configured by the first carrier configuration information sent by the network, the first carrier member set is the first carrier group, and if the second carrier group is composed of all carrier members configured by the second carrier configuration information sent by the network, the second carrier member set is the second carrier group. The first carrier group and the second carrier group are orthogonal, that is, there is no intersection between the carrier members in the first carrier group and the carrier members in the second carrier group.

Further, the carrier configuration information may be further used to configure a starting position offset value and a duration value of a random access response window of each carrier member in the carrier member set. For example, a terminal device of a non-GNSS type may use an extended random access response window, it being understood that the duration of the extended random access response window may be the same as or different from the duration of the random access response window specified by the existing protocol. A terminal device of the GNSS type may use a random access response window specified by an existing protocol. For convenience of explanation, the extended random access response window used by the non-GNSS type terminal apparatus will be hereinafter referred to as a "first response window", and the random access response window used by the GNSS type terminal apparatus will be referred to as a "second response window", wherein the duration of the first response window may be different from the duration of the second response window.

In order for the non-GNSS type terminal apparatus to determine a specific location of the first response window, the first carrier configuration information may include first offset information and first response window information corresponding to the first carrier member set. The first offset information corresponding to the first carrier member set is used to determine a first offset value corresponding to a carrier member in the first carrier member set, where the first offset value is used to determine a start position of the first response window, that is, the first offset may be used to characterize a time interval between an end position of a transmission resource used for transmitting Msg1 and the start position of the first response window. Therefore, the first offset value may also be referred to as a start position offset value. The first response window information is used for determining duration of a first response window corresponding to a carrier member in the first carrier member set. The first offset value and the duration of the first response window corresponding to one carrier member may be used for determining the position of the first response window by the terminal device using the carrier.

Specifically, the first offset value corresponding to the carrier member in the first carrier member set may be configured in the following manner 1-5.

Mode 1

The first carrier configuration information includes first offset information corresponding to the first carrier member set, and the first offset information includes a unique first offset value corresponding to the first carrier member set.

In mode 1, the first offset value is carrier group level or cell level. The starting position of the first response window may be determined by the ending position of the transmission resource used to transmit Msg1 and the first offset value. For example, the network may configure a first offset value for all carrier members in the first carrier group, that is, the network may configure the first offset value corresponding to the first carrier group for the terminal device through system information or RRC dedicated signaling, and the network may determine the start position of the first response window using the same first offset value no matter which carrier member in the first carrier group is selected by the terminal device of the non-GNSS type. In a specific implementation, the first offset value may be determined by the network according to a round trip propagation delay between a location in the coverage area of the cell closest to the satellite and the base station. For example, the network first calculates the round trip propagation delay T1 between the nearest position to the satellite in the coverage area of the cell and the satellite according to the ephemeris information, and then determines the first offset value by combining the common TA value T2 and the MAC CE effective delay value T3, that is, the first offset value is: t1+t2+t3; or, the network calculates the round trip propagation delay T1 between the nearest position to the satellite in the cell coverage area and the satellite and the round trip propagation delay T4 between the base station and the satellite according to the ephemeris information, and the network determines the first offset value as: t1+t4.

Mode 2

The first carrier configuration information comprises first offset information corresponding to the first carrier member set, and the first offset information comprises a unique first offset difference value corresponding to the first carrier member set; the unique first offset value is a difference value of the unique first offset value corresponding to the first carrier member set relative to a preset first reference value.

Mode 2 differs from mode 1 in that mode 1 is a first offset value indicating a carrier group level or cell level directly, and mode 2 is a first offset value indicating a carrier group level or cell level indirectly. At this time, the first offset value=the first reference value+the unique first offset difference value corresponding to the first carrier member set at the carrier group level or the cell level.

In the manner 2, it should be noted that, only one manner is used herein to illustrate how to indirectly indicate the first offset value at the carrier group level or the cell level, and other manners may be used in actual implementation, for example, the first offset information may include a scale factor (or ratio) between the first reference value and the unique first offset value corresponding to the first carrier member set.

In mode 2, optionally, the method further comprises: the network sends a preset first reference value to the terminal equipment. The first reference value may be, in addition to being sent by the network to the terminal device, preconfigured in the terminal device or specified by a protocol, which is not limited in this application.

Mode 3

The first carrier configuration information includes first offset information corresponding to the first carrier member set, and the first offset information includes a first offset value corresponding to each carrier member in the first carrier member set.

In mode 3, the first offset value is carrier-level, that is, the network may configure, for the terminal device, the first offset value corresponding to each carrier member in the first carrier member set through system information or RRC dedicated signaling, and each carrier member in the first carrier member set may correspond to one first offset value. Because the network configures a first offset value for each carrier member in the first carrier member set, the terminal device can determine the first offset value corresponding to the current carrier member according to the currently used carrier member. The first offset value of each carrier member may be determined according to a round trip propagation delay between a position closest to the satellite in a beam coverage area corresponding to the carrier member and the base station. For example, the network calculates the round trip propagation delay T1 between the nearest position to the satellite in the beam coverage area corresponding to a certain carrier member and the satellite according to the ephemeris information, and then determines the first offset value corresponding to the carrier member by combining the common TA value T2 and the MAC CE effective delay value T3, that is, the first offset value corresponding to the carrier member is: t1+t2+t3; or, the network calculates the round-trip propagation delay T1 between the nearest position to the satellite and the satellite in the beam coverage area corresponding to a certain carrier member and the round-trip propagation delay T4 between the base station and the satellite according to the ephemeris information, and the network determines the first offset value corresponding to the carrier member as: t1+t4.

Mode 4

The first carrier configuration information comprises first offset information corresponding to a first carrier member set, and the first offset information comprises a first offset difference value corresponding to each carrier member in the first carrier member set; the first offset value corresponding to one carrier member in the first carrier member set is a difference value of the first offset value corresponding to the carrier member in the first carrier member set relative to a preset second reference value.

Mode 4 differs from mode 3 in that mode 3 is a first offset value indicating the carrier level directly and mode 4 is a first offset value indicating the carrier level indirectly. At this time, for carrier a in the first carrier member set, the first offset value corresponding to carrier a=the second reference value+the first offset difference value corresponding to carrier a.

In the manner 4, it should be noted that, only one manner is used herein to exemplify how to indirectly indicate the first offset value of the carrier level, and other manners may also be used in actual implementation, for example, the first offset information may include a scale factor (or ratio) between the second reference value and the first offset value corresponding to each carrier member in the first carrier member set.

In mode 4, optionally, the method further comprises: the network sends a preset second reference value to the terminal equipment. The second reference value may be, in addition to being sent by the network to the terminal device, preconfigured in the terminal device or specified by a protocol, which is not limited in this application.

Compared with mode 3, mode 4 does not need too many bit indications for the first offset corresponding to each carrier member due to the presence of the second reference value, and thus the signaling overhead can be reduced.

Mode 5

The first carrier configuration information comprises first offset information corresponding to a first carrier member set, wherein the first offset information comprises a unique first offset value corresponding to the first carrier member set and a second offset difference value corresponding to each carrier member in the first carrier member set; the second offset difference value corresponding to one carrier member in the first carrier member set is a difference value of the first offset value of the carrier member in the first carrier member set relative to the unique first offset value.

In mode 5, the unique first offset value corresponding to the first carrier member set is the carrier level or cell level first offset value.

In mode 5, the network may configure the terminal device with a first offset value of a first response window of a cell level or a carrier group level through system information or RRC dedicated signaling, that is, the network may indicate the terminal device of a non-GNSS type with a first offset value of a cell level or a carrier group level through system information or RRC dedicated signaling. When the non-GNSS type terminal apparatus does not acquire the first offset value of the carrier level, the starting position of the first response window may be determined using the first offset value of the cell level or the carrier group level. And the first offset value of the carrier level may be configured as follows: for example, the network may indicate a relative value of the first offset value of the carrier group level based on the first offset value of the carrier group level, that is, the network may indicate a difference between the first offset value of a certain carrier member and the first offset value of the carrier group level, and the terminal device of the non-GNSS type may determine the first offset value of the carrier member according to the difference indicated by the network and the first offset value of the carrier group level.

Mode 5 is similar to mode 4 and is also a method of indirectly indicating the first offset value of the carrier level. At this time, for carrier a in the first carrier member set, the first offset value corresponding to carrier a=the unique first offset value corresponding to the first carrier member set+the second offset difference value corresponding to carrier a.

In the manner 5, it should be noted that, only one manner is used herein to exemplify how to indirectly indicate the first offset value of the carrier level, and other manners may also be used in actual implementation, for example, the first offset information may include a scale factor (or a ratio) between the unique first offset value corresponding to the first carrier member set and the first offset value corresponding to each carrier member in the first carrier member set.

Similar to mode 4, mode 5 can also reduce signaling overhead.

In the above modes 2 and 4, the network may also indicate the carrier group level or the first offset value of the carrier level of the non-GNSS type terminal device based on a reference value, that is, the network may configure a difference value of the first offset value of a carrier group or a carrier member of the non-GNSS type terminal device with respect to the reference value, and the non-GNSS type terminal device may determine the first offset value of the carrier group or the carrier member according to the difference value indicated by the network and the reference value. It is understood that the reference value may be configured by the network in advance according to ephemeris information.

Specifically, the duration of the first response window corresponding to the carrier member in the first carrier member set may be configured in the following manner (1) or manner (2).

Mode (1)

The first carrier configuration information includes first response window information including a unique duration value of the first response window.

In the mode (1), the process is carried out,

the first carrier configuration information may include a duration value of a first response window, and the network may send the first carrier configuration information through system information or RRC dedicated signaling, to configure the duration value of the first response window corresponding to the first carrier group, that is, configure a duration value of a random access response window of a carrier group level for a terminal device of a non-GNSS type, that is, each carrier member in the first carrier group corresponds to the same duration value of the first response window. The same duration value of the first response window is used no matter which carrier member of the first carrier group is used by the non-GNSS type terminal device to initiate random access.

Mode (2)

The first carrier configuration information includes first response window information including a duration value of a first response window corresponding to each carrier member in the first set of carrier members.

In the mode (2), the first carrier configuration information may further include a duration value of a plurality of first response windows, and the network may also send the first carrier configuration information through system information or RRC dedicated signaling, and configure a duration value of a corresponding first response window for each carrier member in the first carrier group, that is, configure a duration value of a carrier-level random access response window for a terminal device of a non-GNSS type, that is, each carrier member in the first carrier group corresponds to a duration value of a first response window. The network configures a duration value of a first response window corresponding to each carrier member in the first carrier group, so that the network can determine the duration value of the first response window corresponding to the determined carrier according to the carrier currently selected by the terminal device of the non-GNSS type.

It may be appreciated that the second carrier configuration information may also include a duration value of the second response window. The configuration manner of the duration value of the second response window may refer to the manner of the existing protocol, which is not described herein again.

Alternatively, the first carrier configuration information may not include the first response window information, where the duration value of the first response window may be determined by the duration value of the second response window.

It should be noted that, the second carrier configuration information does not include the initial position offset value of the second response window. If the type of the terminal device is a GNSS type, the starting position of the second response window may be determined according to the sending time of Msg1 and the starting position offset value of the second response window. For convenience of explanation, the above-described initial position shift amount of the second response window will be hereinafter referred to as "second shift amount". The second offset may be used to characterize a time interval between the Msg1 end position and the second response window, and may be determined by the upstream TA and the MAC CE validation delay value. That is, the first offset corresponds to the first carrier and may be configured by the network in advance for the non-GNSS type terminal device, and the second offset is calculated in real time for the GNSS type terminal device, independent of the second carrier, and is not configured by the network.

It should be noted that, the information sent by the network in each mode may be sent to the terminal device through system information or RRC dedicated signaling, where different information may be sent in the same message, or may be sent in different messages, which is not limited in this application.

In step 402, the terminal device sends Msg1 (i.e. a random access request message) to the network. Correspondingly, the network receives the Msg1 sent by the terminal device.

Specifically, after the terminal device receives the carrier configuration information sent by the network, a carrier set may be obtained from the carrier configuration information, and a carrier may be selected from the carrier set to initiate random access, for example, msg1 may be sent to the network by using the selected carrier.

In a specific implementation, the non-GNSS type terminal device may select one carrier (e.g. the first carrier) from the first carrier set to initiate random access, and the GNSS type terminal device may select one carrier (e.g. the second carrier) from the second carrier set to initiate random access.

Correspondingly, the network may receive the Msg1 sent by the terminal device of the non-GNSS type on the first carrier, or may receive the Msg1 sent by the terminal device of the GNSS type on the second carrier.

In step 403, the network sends Msg2 (i.e. a random access response message) to the terminal device. Correspondingly, the terminal equipment receives the Msg2 sent by the network.

Specifically, after the network receives the Msg1 sent by the terminal device, a time window for sending the Msg2 may be determined, and the Msg2 may be sent to the terminal device according to the time window. The time window for transmitting the Msg2 may be a random access response window.

In a specific implementation, after the network receives the Msg1 sent by the terminal device, the type of the terminal device may be determined based on the Msg 1. In the first embodiment, a carrier used by the terminal device to transmit Msg1 may be determined, and a type of the terminal device may be determined according to a carrier group to which the carrier belongs, for example, whether the terminal device is of a non-GNSS type or a GNSS type may be determined. If the terminal device uses the carrier in the first carrier group to send Msg1, and the first carrier group is only allocated to the terminal device of the non-GNSS type for use, it may be determined that the terminal device is of the non-GNSS type; if the terminal device uses the carriers in the second carrier group to send Msg1, since the second carrier group is only allocated to the terminal device of the GNSS type for use, it can be determined that the terminal device is of the GNSS type.

When the network determines the type of the terminal device, the random access response window may be determined according to the type of the terminal device. For example, if the terminal device is a non-GNSS type terminal device, the network may send Msg2 using a duration of a first response window corresponding to a carrier currently used by the non-GNSS type terminal device. If the terminal device is a GNSS type terminal device, the Msg2 is sent by using the duration of the second response window.

Specifically, the terminal device may start receiving Msg2 according to the starting position of the random access response window, and the duration of receiving Msg2 may be determined by the duration of the random access response window. For example, a non-GNSS type terminal device may receive Msg2 from a starting position of a first response window during a duration of the first response window, and a GNSS type terminal device may receive Msg2 from a starting position of a second response window during a duration of the second response window.

For a non-GNSS type terminal device, after the non-GNSS type terminal device receives a first offset value indicated by a network, a start position of a first response window, that is, a start position of receiving Msg2, may be determined according to a first offset value corresponding to a first carrier selected by the non-GNSS type terminal device and a sending time of Msg1, and may start receiving Msg2 at the start position of receiving Msg2. It is understood that the first offset value corresponding to the first carrier selected by the non-GNSS type terminal apparatus may be a first offset value at a carrier group level or a first offset value at a carrier level. Therefore, the time for receiving the Msg2 can be accurately calculated by the non-GNSS type terminal equipment, and the receiving of the Msg2 can be effectively realized, so that the random access of the non-GNSS type terminal equipment can be successfully completed.

For terminal devices of the GNSS type, the starting position of the second time window may be determined according to the specifications of the existing protocol, for example, according to the transmission instant of Msg1 and the second offset. The GNSS type terminal device may then start receiving Msg2 at the start position of the second time window.

Step 404, the terminal device sends Msg3 to the network. Correspondingly, the network receives the Msg3 sent by the terminal device.

The interaction process of Msg3 between the terminal device and the network may refer to the existing protocol, and will not be described herein.

Step 405, the network sends Msg4 to the terminal device. Correspondingly, the terminal equipment receives the Msg4 sent by the network.

The implementation of step 405 may refer to an existing protocol, which is not described herein.

Next, the random access method provided in the present application is further described through embodiment two.

The difference between the second embodiment and the first embodiment is that:

in step 401, when the network groups all carriers in the cell, the network may group a part of the carriers into a "third carrier group" and group the remaining carriers into a "fourth carrier group". The carriers of the third carrier group may be used for a GNSS type terminal device to initiate random access, and the carriers of the fourth carrier group may be used for a GNSS type terminal device and a non-GNSS type terminal device to initiate random access. In this way, when the network sends the carrier configuration information to the terminal device, the carrier member information in the fourth carrier group may be carried in the first carrier configuration information, and the carrier member information in the third carrier group may be carried in the second carrier configuration information.

For example, the first carrier configuration information may include first carrier member set information, which may include indexes of one or more carrier members (e.g., indexes of carrier members in a fourth carrier group), and the second carrier configuration information may include second carrier member set information, which may include indexes of one or more carrier members (e.g., indexes of carrier members in a third carrier group). The first carrier may be selected from a fourth carrier group, and the second carrier may be selected from a third carrier group and/or a fourth carrier group. The fourth carrier group may be composed of one or more carrier members in the first carrier configuration information transmitted by the network, and the third carrier group may be composed of one or more carrier members in the second carrier configuration information transmitted by the network. If the fourth carrier group is composed of all carrier members configured by the first carrier configuration information sent by the network, the first carrier member set is the fourth carrier group, and if the third carrier group is composed of all carrier members configured by the second carrier configuration information sent by the network, the second carrier member set is the third carrier group. The third carrier group and the fourth carrier group are orthogonal, that is, there is no intersection between the carrier members in the third carrier group and the carrier members in the fourth carrier group.

Alternatively, for a GNSS type terminal device, the network may configure different access weights on the two carrier groups (e.g., the third carrier group and the fourth carrier group) to balance the load of the carrier groups, since it may select carriers in the two carrier groups. For example, the network device may configure different access weights for the two carriers through the carrier access weight configuration information. The carrier access weight configuration information may be sent to the terminal device by the network in advance, and the carrier access weight configuration information may be used to characterize a probability that the terminal device initiates random access using the carrier group. For example, the network may indicate the above-mentioned carrier access weight configuration information to the terminal device through system information or RRC dedicated signaling. At this time, the second carrier is selected by the terminal device based on the access weight of the carrier set; wherein the third set of carriers has a first access weight and the fourth set of carriers has a second access weight. For example, the network may configure the GNSS-type terminal device to have an access weight of 80% on the third carrier set and 20% on the fourth carrier set. The terminal device of GNSS type may first select one carrier group according to the access weights of the two carrier groups, for example, may select a carrier group with a high access weight (i.e. a third carrier group), and then may select an appropriate carrier in the third carrier group to initiate random access. It may be appreciated that the carrier access weight configuration information is used to indicate the probability that the terminal device initiates random access using the carrier set.

Optionally, since the carriers in the fourth carrier group may be used by terminal devices of GNSS type or terminal devices of non-GNSS type, the network may configure two access weights for each carrier member in the fourth carrier group, and the access weight information may also be used to characterize the probability that the terminal device initiates random access using the carrier, so as to balance the carrier load. For example, the network device may configure different access weights for the two carriers through the carrier access weight configuration information. One access weight is used for initiating random access by the GNSS type terminal equipment, and the other access weight is used for initiating random access by the non-GNSS type terminal equipment. Therefore, different types of terminal equipment can perform carrier selection based on the access weight when random access is initiated. Specifically, the second carrier is selected by the terminal equipment based on the access weight of the carrier; each carrier member in the fourth carrier set has a third access weight corresponding to the first type of terminal device and a fourth access weight corresponding to the second type of terminal device. For example, one carrier member in the fourth carrier group has two weights, where the access weight of the carrier member corresponding to the terminal device of the GNSS type is 20% and the access weight of the carrier member corresponding to the terminal device of the non-GNSS type is 80%, and the carrier member may be preferentially used for the terminal device of the non-GNSS type. Therefore, the access proportion of the GNSS type terminal equipment and the non-GNSS type terminal equipment can be reasonably distributed, and load split is realized. It can be appreciated that the carrier access weight configuration information is used to indicate the probability that the terminal device initiates random access using the carrier

In step 403, in the second embodiment, the non-GNSS type terminal device and the GNSS type terminal device may select the same carrier member (e.g., the non-GNSS type terminal device and the GNSS type terminal device both select the same carrier member from the fourth carrier group) to initiate random access, so that the network cannot distinguish the types of the terminal devices by the carrier member in which the Msg1 is sent by the terminal device, and thus cannot determine a random access response window. Thus, in embodiment two, the type of terminal device may also be determined based on Msg 1. Specifically, the network may configure different random access preambles and/or different random access channel occasions for the GNSS type terminal device and the non-GNSS type terminal device in advance through system information or RRC dedicated signaling, for example, the network may send physical random access channel configuration information to the terminal device in advance, where the physical random access channel configuration information is used to configure a first random access preamble and/or a first random access occasion of the non-GNSS type terminal device and a second random access preamble and/or a second random access occasion of the GNSS type terminal device, where the first random access preamble and the second random access preamble are different, and the first random access occasion and the second random access occasion are different. The terminal device of the GNSS type and the terminal device of the non-GNSS type may select their corresponding random access preambles and/or different random access channel occasions to transmit the Msg1, and the network determines the type of the terminal device according to the random access preambles and/or different random access channel occasions selected by the terminal device to transmit the Msg1, that is, whether the terminal device is a terminal device of the GNSS type or a terminal device of the non-GNSS type. For example, the terminal device of the non-GNSS type may carry a first random access preamble in the Msg1 and/or send the Msg1 at a first random access channel occasion, and the terminal device of the GNSS type may carry a second random access preamble in the Msg1 and/or send the Msg1 at a second random access channel occasion, where the first random access preamble is different from the second random access preamble, and the first random access channel occasion is different from the second random access channel occasion.

Next, the random access method provided in the present application is further described through embodiment three.

The third embodiment differs from the first embodiment in that:

in step 401, the network does not group carriers in the cell, but configures a duration value of the first response window and a first offset value for a portion of carriers in the cell, and the remaining carriers may configure a duration value of the second response window. It can be understood that the network can also configure the duration value and the first offset value of the first response window for a part of carriers in the cell through the first carrier configuration information, and configure the duration value of the second response window for the remaining carriers through the second carrier configuration information.

The non-GNSS type terminal device may select one carrier from the carriers configured with the duration value and the first offset value of the first response window to initiate random access.

For a terminal device of GNSS type, in one case (assumed to be case 1), one carrier may be selected from the carriers configured with the duration value and the first offset value of the first response window to initiate random access, or one carrier may be selected from all carriers in the cell to initiate random access. In another case (assume case 2), a carrier may be selected from the remaining carriers to initiate random access.

For convenience of description, hereinafter, a carrier configured with the duration value and the first offset value of the first response window is referred to as a full configuration carrier, and the remaining carriers are referred to as half configuration carriers.

In case 1, for a GNSS type terminal device, since it can select a fully configured carrier or a half configured carrier, the network can configure different access weights for the two carriers to balance the loads of the two carriers. For example, the network device may configure different access weights for the two carriers through the carrier access weight configuration information. The carrier access weight configuration information may be sent to the terminal device by the network in advance, and the carrier access weight configuration information may be used to characterize the probability that the terminal device initiates random access using two carriers. For example, the network may indicate the two carrier access weight configuration information to the terminal device through system information or RRC dedicated signaling. At this time, the second carrier is selected by the terminal device based on the access weights of the two carriers; wherein the fully configured carrier has a first access weight and the half configured carrier has a second access weight. Illustratively, the network may configure a GNSS type terminal device to have an access weight of 80% on a half-configured carrier and 20% on a full-configured carrier. The GNSS type terminal apparatus may first determine which carrier to select according to the access weights of the two carriers, for example, may select a half-configured carrier, and then may select an appropriate carrier from all the half-configured carriers to initiate random access. It may be appreciated that the carrier access weight configuration information is used to indicate the probability that the terminal device initiates random access using the carrier set.

In case 1, since the fully configured carrier may be used by both GNSS type and non-GNSS type terminal devices, the network may configure two access weights for each carrier member in the fully configured carrier, and the access weight information may also be used to characterize the probability that the terminal device initiates random access using the carrier, so as to balance the carrier load. For example, the network device may configure different access weights for the two carriers through the carrier access weight configuration information. One access weight is used for initiating random access by the GNSS type terminal equipment, and the other access weight is used for initiating random access by the non-GNSS type terminal equipment. Therefore, different types of terminal equipment can perform carrier selection based on the access weight when random access is initiated. Specifically, the second carrier is selected by the terminal equipment based on the access weight of the carrier; each carrier member in the fully configured carrier has a third access weight corresponding to the first type of terminal device and a fourth access weight corresponding to the second type of terminal device. For example, one carrier member in the fully configured carrier has two weights, the access weight of the carrier member corresponding to the terminal device of the GNSS type is 20%, and the access weight of the carrier member corresponding to the terminal device of the non-GNSS type is 80%, so that the carrier member may be preferentially used for the terminal device of the non-GNSS type. Therefore, the access proportion of the GNSS type terminal equipment and the non-GNSS type terminal equipment can be reasonably distributed, and load split is realized. It can be appreciated that the carrier access weight configuration information is used to indicate the probability that the terminal device initiates random access using the carrier.

In step 403, in the third embodiment, in case 1, the non-GNSS type terminal device and the GNSS type terminal device may select the same carrier member (e.g. a fully configured carrier) to initiate random access, so that the network cannot distinguish the type of the terminal device by the carrier member in which the Msg1 is sent by the terminal device, and thus cannot determine the random access response window. Thus, in embodiment two, the type of terminal device may also be determined based on Msg 1. Specifically, the network may configure different random access preambles and/or different random access channel occasions for the GNSS type terminal device and the non-GNSS type terminal device in advance through system information or RRC dedicated signaling, for example, the network may send physical random access channel configuration information to the terminal device in advance, where the physical random access channel configuration information is used to configure a first random access preamble and/or a first random access occasion of the non-GNSS type terminal device and a second random access preamble and/or a second random access occasion of the GNSS type terminal device, where the first random access preamble and the second random access preamble are different, and the first random access occasion and the second random access occasion are different. The terminal device of the GNSS type and the terminal device of the non-GNSS type may select their corresponding random access preambles and/or different random access channel occasions to transmit the Msg1, and the network determines the type of the terminal device according to the random access preambles and/or different random access channel occasions selected by the terminal device to transmit the Msg1, that is, whether the terminal device is a terminal device of the GNSS type or a terminal device of the non-GNSS type. For example, the terminal device of the non-GNSS type may carry a first random access preamble in the Msg1 and/or send the Msg1 at a first random access channel occasion, and the terminal device of the GNSS type may carry a second random access preamble in the Msg1 and/or send the Msg1 at a second random access channel occasion, where the first random access preamble is different from the second random access preamble, and the first random access channel occasion is different from the second random access channel occasion.

In addition to the differences described in the second embodiment and the third embodiment, the first embodiment may be referred to for other descriptions in the second embodiment and the third embodiment, and the description is omitted.

It will be appreciated that, in order to implement the above functions, the terminal device, the network side device, and the like include corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

The embodiment of the present application may divide the functional modules of the terminal device and the network side device according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

Fig. 5 is a schematic structural diagram of a random access device 50 according to an embodiment of the present application, which may include: a receiving module 51 and a transmitting module 52.

The random access means 50 may be a first type of terminal device or a second type of terminal device, the first type of terminal device not having GNSS capabilities, the second type of terminal device having GNSS capabilities;

a receiving module 51, configured to receive the first carrier configuration information and the second carrier configuration information sent by the network side device;

a sending module 52, configured to send a random access request message Msg1 to a network side device;

in case the terminal device is a first type of terminal device, then

A receiving module 51, configured to receive a random access response message Msg2 sent by the network side device based on the first carrier configuration information;

in case the terminal device is a second type of terminal device, then

A receiving module 51, configured to receive Msg2 sent by the network side device based on the second carrier configuration information;

In one possible implementation manner, the first carrier configuration information is used to indicate first offset information and first response window information corresponding to the first type of terminal device, then

The receiving module 51 is further configured to determine a first offset value and a duration value of a first response window based on the first carrier configuration information, determine a first starting position based on the first offset value, and receive Msg2 sent by the network side device within a duration range of the first response window from the first starting position; wherein the first starting position is used to characterize the starting position of the first response window.

In one of the possible implementations of this method,

in case the terminal device is a first type of terminal device, then

The sending module 52 is further configured to select the first carrier to send Msg1 to the network side device;

in case the terminal device is a second type of terminal device, then

The sending module 52 is further configured to select the second carrier to send Msg1 to the network device.

In one of the possible implementations of this method,

all carrier members in the first carrier member set form a fourth carrier set, all carrier members in the second carrier member set form a third carrier set, and the second carrier is selected from the third carrier set and/or the fourth carrier set; the first carrier is selected from a fourth carrier set; wherein the third set of carriers is orthogonal to the fourth set of carriers.

In one of the possible implementations of this method,

the receiving module 51 is further configured to receive carrier access weight configuration information or carrier access weight configuration information sent by the network side device; the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier set, and the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier.

In one of the possible implementations of this method,

the receiving module 51 is further configured to receive physical random access channel configuration information sent by the network side device, where the physical random access channel configuration information is used to configure a first random access preamble and/or a first random access opportunity of the first type of terminal device, and a second random access preamble and/or a second random access opportunity of the second type of terminal device.

In one of the possible implementations of this method,

Fig. 6 is a schematic structural diagram of a random access device 60 according to an embodiment of the present application, which may include: the sending module 61, the receiving module 62, and the processing module 63, and other modules may perform corresponding actions under the control of the processing module 62. The random access device 60 may be a network side device, and:

a sending module 61, configured to send the first carrier configuration information and the second carrier configuration information to the terminal device;

a receiving module 62 for receiving the Msg1 sent by the terminal device

A processing module 63, configured to determine a type of a terminal device based on Msg1, where the terminal device is a first type terminal device or a second type terminal device, and the first type terminal device has no GNSS capability, and the second type terminal device has GNSS capability;

In case the type of the terminal device is a first type of terminal device, the processing module 63 is further configured to determine a duration value of the first response window based on the type of the terminal device; the first response window is used for representing a random access response window of the first type of terminal equipment;

a sending module 61, configured to send Msg2 to the terminal device based on the duration value of the first response window;

In one of the possible implementations of this method,

If the terminal device is a first type terminal device, the receiving module 62 is specifically configured to receive, on a first carrier, msg1 sent by the terminal device;

if the terminal device is a second type terminal device, the receiving module 62 is specifically configured to receive the Msg1 sent by the terminal device on a second carrier.

In one possible implementation manner, all carrier members in the first carrier member set form a first carrier set, the first carrier is selected in the first carrier set, all carrier members in the second carrier member set form a second carrier set, the second carrier is selected in the second carrier set, the first carrier set is orthogonal to the second carrier set, the first carrier is different from the second carrier, and the processing module 63 is further configured to determine a type of the terminal device based on the carrier set in which the carrier member used by the Msg1 is located.

In one of the possible implementations of this method,

a transmitting module 61, configured to transmit physical random access channel configuration information to a terminal device; the physical random access channel configuration information is used for configuring a first random access preamble and/or a first random access opportunity of the first type of terminal equipment, and a second random access preamble and/or a second random access opportunity of the second type of terminal equipment, wherein the first random access preamble and the second random access preamble are different, and the first random access opportunity and the second random access opportunity are different.

In one possible implementation manner, the processing module 63 is further configured to determine the type of the terminal device based on a random access opportunity used by the terminal device to send the Msg1 and/or a random access preamble included in the Msg 1.

In one of the possible implementations of this method,

the sending module 61 is further configured to send carrier access weight configuration information or carrier access weight configuration information to the terminal device; the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier set, and the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using the carrier.

In one of the possible implementations of this method,

the sending module 61 is further configured to send a preset first reference value to the terminal device;

In one of the possible implementations of this method,

a sending module 61, configured to send a preset second reference value to a terminal device;

In one possible implementation, the first offset information includes a first offset value corresponding to each carrier member in the first set of carrier members;

Fig. 7 is a schematic structural diagram of a random access device 700 according to an embodiment of the present application, where the random access device 700 may include: at least one processor; and at least one memory communicatively coupled to the processor. The random access apparatus 700 may be a network side device or a terminal device. The memory stores program instructions executable by the processor, and if the random access apparatus 700 is a network side device, the processor invokes the program instructions to perform actions performed by the network side device in the random access method provided in the embodiment of the present application, and if the random access apparatus 700 is a terminal device, the processor invokes the program instructions to perform actions performed by the terminal device in the random access method provided in the embodiment of the present application.

As shown in fig. 7, the random access means 700 is embodied in the form of a general purpose computing device. The components of the random access device 700 may include, but are not limited to: one or more processors 710, a memory 720, a communication bus 740 that connects the various system components (including the memory 720 and the processor 710), and a communication interface 730.

The communication bus 740 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include industry Standard architecture (Industry Standard Architecture; hereinafter ISA) bus, micro channel architecture (Micro Channel Architecture; hereinafter MAC) bus, enhanced ISA bus, video electronics standards Association (Video Electronics Standards Association; hereinafter VESA) local bus, and peripheral component interconnect (Peripheral Component Interconnection; hereinafter PCI) bus.

Random access device 700 typically includes a variety of computer system readable media. Such media can be any available media that can be accessed by random access device 700 and includes both volatile and nonvolatile media, removable and non-removable media.

Memory 720 may include computer system readable media in the form of volatile memory, such as random access memory (Random Access Memory; hereinafter: RAM) and/or cache memory. The random access device 700 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. Although not shown in fig. 7, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a compact disk read only memory (Compact Disc Read Only Memory; hereinafter CD-ROM), digital versatile read only optical disk (Digital Video Disc Read Only Memory; hereinafter DVD-ROM), or other optical media) may be provided. In such cases, each drive may be coupled to communication bus 740 by one or more data medium interfaces. Memory 720 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the embodiments of the present application.

A program/utility having a set (at least one) of program modules may be stored in the memory 720, such program modules include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules generally perform the functions and/or methods in the embodiments described herein.

The random access apparatus 700 may also be in communication with one or more external devices (e.g., keyboard, pointing device, display, etc.), one or more devices that enable a user to interact with the random access apparatus 700, and/or any device (e.g., network card, modem, etc.) that enables the random access apparatus 700 to communicate with one or more other computing devices. Such communication may occur through communication interface 730. Also, the random access apparatus 700 may communicate with one or more networks (e.g., a local area network (Local Area Network; hereinafter: LAN), a wide area network (Wide Area Network; hereinafter: WAN) and/or a public network, such as the internet) through a network adapter (not shown in fig. 7) that may communicate with other modules of the electronic device through a communication bus 740. It should be appreciated that although not shown in fig. 7, other hardware and/or software modules may be used in connection with random access device 700, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, disk arrays (Redundant Arrays of Independent Drives; hereinafter RAID) systems, tape drives, data backup storage systems, and the like.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.

The functional units in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: flash memory, removable hard disk, read-only memory, random access memory, magnetic or optical disk, and the like.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A random access method applied to terminal equipment, wherein the terminal equipment is first type terminal equipment or second type terminal equipment, the first type terminal equipment has no GNSS capability, and the second type terminal equipment has GNSS capability, the method is characterized in that the method includes:

sending a random access request message Msg1 to the network side equipment;

if the terminal equipment is second-type terminal equipment, receiving Msg2 sent by the network side equipment based on the second carrier configuration information;

the first carrier configuration information is used for indicating first offset information and/or first response window information corresponding to the first type terminal equipment; the second carrier configuration information is used for indicating second response window information corresponding to the second type terminal equipment.

2. The method of claim 1, wherein the terminal device is a first type of terminal device,

the receiving, based on the first carrier configuration information, the Msg2 sent by the network side device includes:

determining a first offset value and a duration value of the first response window based on the first carrier configuration information, determining a first starting position based on the first offset value, and receiving Msg2 sent by the network side equipment within the duration range of the first response window from the first starting position; wherein the first starting position is used to characterize the starting position of the first response window.

3. The method of claim 2, wherein the step of determining the position of the substrate comprises,

4. The method of claim 3, wherein the step of,

the first response window information comprises a time length value of a unique first response window corresponding to the first carrier member set; or alternatively, the first and second heat exchangers may be,

5. The method according to claim 3 or 4, wherein,

6. The method according to claim 3 or 4, wherein,

7. The method according to claim 3 or 4, wherein,

8. The method according to any one of claims 3-7, wherein the sending Msg1 to the network side device comprises:

if the terminal equipment is first type terminal equipment, selecting a first carrier to send Msg1 to the network side equipment;

and if the terminal equipment is the second type terminal equipment, selecting a second carrier to send Msg1 to the network side equipment.

9. The method of claim 8, wherein the step of determining the position of the first electrode is performed,

all carrier members in the first carrier member set form a first carrier set, the first carrier is selected from the first carrier set, all carrier members in the second carrier member set form a second carrier set, and the second carrier is selected from the second carrier set; wherein the first carrier set is orthogonal to the second carrier set, and the first carrier is different from the second carrier.

10. The method of claim 8, wherein the step of determining the position of the first electrode is performed,

all carrier members in the first carrier member set form a fourth carrier set, all carrier members in the second carrier member set form a third carrier set, and the second carrier is selected from the third carrier set and/or the fourth carrier set; the first carrier is selected from the fourth carrier set; wherein the third set of carriers is orthogonal to the fourth set of carriers.

11. The method according to claim 10, wherein the method further comprises:

receiving carrier access weight configuration information or carrier access weight configuration information sent by the network side equipment; the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using a carrier set, and the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using a carrier.

12. The method of claim 11, wherein the step of determining the position of the probe is performed,

the second carrier is selected by the terminal equipment based on the access weight of the carrier set; wherein the third set of carriers has a first access weight and the fourth set of carriers has a second access weight; or alternatively, the first and second heat exchangers may be,

The second carrier is selected by the terminal equipment based on the access weight of the carrier; wherein each carrier member in the fourth carrier set has a third access weight corresponding to the first type of terminal device and a fourth access weight corresponding to the second type of terminal device.

13. The method according to any one of claims 10-12, further comprising:

and receiving physical random access channel configuration information sent by the network side equipment, wherein the physical random access channel configuration information is used for configuring a first random access preamble and/or a first random access time of the first type terminal equipment and a second random access preamble and/or a second random access time of the second type terminal equipment.

14. The method of claim 13, wherein the step of determining the position of the probe is performed,

if the terminal equipment is first type terminal equipment, the random access lead code and/or the random access time used by the terminal equipment is the first random access lead code and/or the first random access time; or alternatively, the first and second heat exchangers may be,

if the terminal equipment is second type terminal equipment, the random access lead code and/or the random access time used by the terminal equipment is the second random access lead code and/or the second random access time;

Wherein the first random access preamble and the second random access preamble are different, and the first random access opportunity is different from the second random access opportunity.

15. A random access method applied to a terminal device, the method comprising:

if the terminal equipment is first type terminal equipment, the terminal equipment selects a first carrier wave to send Msg1 to network side equipment; the first carrier wave has a duration value and a first offset value of a first response window corresponding to the first carrier wave, the first response window is used for representing a random access response window of the first type terminal equipment, and the first type terminal equipment does not have GNSS capability;

the terminal equipment determines a first starting position based on the first offset value, and receives a random access response message Msg2 sent by the network side equipment in the duration range of the first response window from the first starting position; wherein the first starting position is used to characterize the starting position of the first response window.

16. A random access method applied to a terminal device, the method comprising:

If the terminal equipment is second type terminal equipment, the terminal equipment selects a second carrier wave to send Msg1 to network side equipment; the second carrier wave has a duration value of a second response window corresponding to the second carrier wave, the second response window is used for representing a random access response window of the second type terminal equipment, and the second type terminal equipment has GNSS capability;

the terminal equipment acquires a second initial position and receives Msg2 sent by the network side equipment in the duration range of the second response window from the second initial position; the second starting position is used for representing the starting position of the second response window.

17. A random access method applied to network side equipment, the method comprising:

receiving the Msg1 sent by the terminal equipment;

determining the type of the terminal equipment based on the Msg1, wherein the terminal equipment is first type terminal equipment or second type terminal equipment, the first type terminal equipment is not provided with GNSS capability, and the second type terminal equipment is provided with GNSS capability;

If the type of the terminal equipment is a first type terminal equipment, determining a duration value of a first response window based on the type of the terminal equipment; wherein the first response window is used for characterizing a random access response window of the first type of terminal equipment;

18. The method of claim 17, wherein the method further comprises:

19. The method of claim 18, wherein the step of providing the first information comprises,

if the terminal device is a first type terminal device, the receiving Msg1 sent by the terminal device includes: receiving the Msg1 sent by the terminal equipment on a first carrier;

if the terminal device is a second type terminal device, the receiving Msg1 sent by the terminal device includes: and receiving the Msg1 sent by the terminal equipment on a second carrier.

20. The method of claim 19, wherein all carrier members in the first set of carrier members comprise a first set of carriers, wherein the first carrier is selected from the first set of carriers, wherein all carrier members in the second set of carrier members comprise a second set of carriers, wherein the second carrier is selected from the second set of carriers, wherein the first set of carriers is orthogonal to the second set of carriers, wherein the first carrier is different from the second carrier, and wherein determining the type of the terminal device based on the Msg1 comprises:

and determining the type of the terminal equipment based on the carrier set of the carrier member used by the Msg1.

21. The method according to claim 19, wherein all carrier members of the first set of carrier members constitute a fourth set of carriers, wherein all carrier members of the second set of carrier members constitute a third set of carriers, wherein the first carrier is selected from the fourth set of carriers, wherein the second carrier is selected from the third set of carriers and/or the fourth set of carriers, and wherein the third set of carriers is orthogonal to the fourth set of carriers.

22. The method of claim 21, wherein the method further comprises:

transmitting physical random access channel configuration information to the terminal equipment; the physical random access channel configuration information is used for configuring a first random access preamble and/or a first random access opportunity of the first type of terminal equipment and a second random access preamble and/or a second random access opportunity of the second type of terminal equipment, wherein the first random access preamble and the second random access preamble are different, and the first random access opportunity and the second random access opportunity are different.

23. The method of claim 22, wherein the determining the type of the terminal device based on the Msg1 comprises:

and determining the type of the terminal equipment based on the random access time used by the Msg1 and/or the random access preamble included by the Msg 1.

24. The method according to any one of claims 21-23, further comprising:

sending carrier group access weight configuration information or carrier access weight configuration information to the terminal equipment; the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using a carrier set, and the carrier access weight configuration information is used for indicating the probability that the terminal equipment initiates random access by using a carrier.

25. The method according to any one of claims 18 to 24, wherein,

26. The method according to any one of claims 18-25, further comprising:

a preset first reference value is sent to the terminal equipment;

wherein the first offset information includes a unique first offset difference value corresponding to the first carrier member set; the unique first offset difference value is a difference value of the unique first offset value corresponding to the first carrier member set relative to a preset first reference value.

27. The method according to any one of claims 18-25, wherein,

the first offset information comprises a unique first offset value corresponding to the first carrier member set; the unique first offset value is determined according to the round trip propagation delay between the nearest position to the satellite in the cell coverage area and the network side equipment.

28. The method according to any one of claims 18-25, further comprising:

transmitting a preset second reference value to the terminal equipment;

wherein the first offset information includes a first offset difference value corresponding to each carrier member in the first set of carrier members; the first offset value corresponding to one carrier member in the first carrier member set is the difference value of the first offset value corresponding to the carrier member in the first carrier member set relative to a preset second reference value.

29. The method according to any one of claims 18-25, wherein,

30. The method according to any one of claims 18-25, wherein,

31. A chip for performing the method of any one of claims 1-30.

32. A terminal device, comprising: a memory for storing computer program code comprising instructions which, when read from the memory by the terminal device, cause the terminal device to perform the method of any of claims 1-16.

33. A network side device, comprising: a memory for storing computer program code comprising instructions that, when read from the memory by the network-side device, cause the network-side device to perform the method of any of claims 17-30.

34. A computer readable storage medium comprising computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-16 or to perform the method of any one of claims 17-30.