CN117223381A

CN117223381A - Reporting method of random access condition, terminal equipment and network equipment

Info

Publication number: CN117223381A
Application number: CN202180097733.XA
Authority: CN
Inventors: 杜忠达
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2023-12-12
Also published as: WO2023010461A1

Abstract

The embodiment of the invention provides a reporting method of random access conditions, terminal equipment and network equipment, which are applied to the technical field of communication, and comprises the following steps: transmitting a first Physical Uplink Shared Channel (PUSCH) to a network device; the first PUSCH carries random access condition information, and the random access condition information is used for indicating a reason for triggering random access, wherein the first PUSCH is associated with the first preamble signal.

Description

Reporting method of random access condition, terminal equipment and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for reporting a random access condition, a terminal device, and a network device.

Background

When a two-step random access (2-step RACH) procedure is introduced in a 5G NR system, a preamble originally reserved for a four-step random access (4-step RACH) procedure may be used as a random access radio resource for the 2-step RACH, but when a new preamble range is introduced for a new random access condition, further division is required within the existing reserved preamble so that the network device can distinguish between the new random access trigger conditions. However, with the increasing number of the newly introduced random access triggering conditions, the method is limited by a limited preamble range, so that the preamble range corresponding to each random access condition is very small, and the probability of random access collision is high.

Disclosure of Invention

The embodiment of the invention provides a reporting method of random access conditions, terminal equipment and network equipment, which can reduce the probability of random access collision.

In a first aspect, a method for reporting a random access condition is provided, which is applied to a terminal device, and includes:

transmitting a first Physical Uplink Shared Channel (PUSCH) to a network device;

the first PUSCH carries random access condition information for indicating a reason for triggering random access

Wherein the first PUSCH is associated with a first preamble.

In a second aspect, a method for reporting a random access condition is provided, which is applied to a network device, and includes:

receiving a first PUSCH sent by terminal equipment;

Wherein the first PUSCH is associated with a first preamble.

In a third aspect, there is provided a terminal device comprising: a transmitter, configured to transmit a first physical uplink shared channel PUSCH to a network device;

the first PUSCH carries random access condition information, which is used to indicate a reason for triggering random access

Wherein the first PUSCH is associated with a first preamble.

In a fourth aspect, there is provided a network device comprising: a receiver, configured to receive a first PUSCH transmitted by a terminal device;

carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating a reason for triggering random access;

wherein the first PUSCH is associated with a first preamble.

In a fifth aspect, there is provided a terminal device, including: a sending module, configured to send a first physical uplink shared channel PUSCH to a network device;

wherein the first PUSCH is associated with a first preamble.

In a sixth aspect, there is provided a network device comprising: a receiving module, configured to receive a first PUSCH transmitted by a terminal device;

wherein the first PUSCH is associated with a first preamble.

In a seventh aspect, there is provided a computer readable storage medium comprising: computer instructions which, when run on a computer, cause a processor to perform the method of or the method of any of the alternative implementations of the first aspect or second aspect described above.

In an eighth aspect, there is provided a computer program product comprising computer instructions which, when run on a computer, cause a processor to perform the method of any of the alternative implementations of the first aspect or the first aspect as described above, or to perform the method of any of the alternative implementations of the second aspect or the second aspect as described above.

In a ninth aspect, there is provided a chip coupled to a memory in a terminal device, such that the chip, when run, invokes program instructions stored in the memory, such that the terminal device performs the method as described above for the first aspect or any of the alternative implementations of the first aspect, or such that the network device performs the method as described above for the second aspect or any of the alternative implementations of the second aspect.

The invention provides a reporting method of random access condition, in the method, terminal equipment can send a first PUSCH to network equipment; the first PUSCH carries random access condition information, and the random access condition information is used for indicating a reason for triggering random access, wherein the first PUSCH is associated with the first preamble signal. According to the scheme, the terminal equipment can bear the random access condition information in the first PUSCH associated with the first preamble information, compared with the method for indicating the random access condition through the preamble, the method is not limited by the scope of the preamble, and further division in the reserved preamble is not needed, so that the probability of random access collision can be reduced.

Drawings

Fig. 1 is a schematic diagram of repeatedly configuring ROs according to a certain period in a time domain according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an association relationship between an RO and an SSB according to an embodiment of the present invention;

fig. 3 is a schematic architecture diagram of a communication system to which the embodiment of the present invention is applied according to the embodiment of the present invention;

fig. 4 is a flow chart of a method for reporting a random access condition according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention

Fig. 8 is a schematic structural diagram II of a terminal device according to an embodiment of the present invention;

Detailed Description

the following description of the technical solutions according to the embodiments of the present invention will be given with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

First, description is made of related technologies involved in the embodiments of the present invention:

in a third generation partnership project (3rd Generation Partnership Project,3GPP) communication system, such as a 5G New Radio (NR) system, a terminal device may establish, reestablish, or recover a Radio resource control (Radio Resource Control, RRC) link by means of random access, or in the case of an RRC link, achieve the purpose of uplink synchronization and power control initialization by means of random access.

In some cases, the base station needs to distinguish the reason that the terminal device sends the random access through the first step of the terminal device in the random access process, so as to realize access control or better complete the random access process. The base station in the first part of the random access procedure receives a preamble (preamble) sent by the terminal device.

The commonly used random access radio resources (referred to herein as original random access radio resources) within the 5G NR system configured cell are initially used for a 4-step random access (4 step Random Access Channel,4 step RACH) procedure. The minimum unit of the random access radio resource in the time-frequency domain is called a random access channel opportunity (RO), and there are 64 preambles in total in one RO. In a 5G NR system, the length of one radio frame is 10 ms, and 10 subframes with a length of 1 ms are included.

The number of slots in a subframe is related to the subcarrier spacing (SCS) of the carrier, for example, 1 slot in a subframe of a carrier with a subcarrier spacing of 15 KHz.

Alternatively, the other subcarrier spacing comprises K time slots, where K is equal to the ratio between the other subcarrier spacing and 15 KHz.

For example, when scs=120 KHz, one subframe may contain 8 slots. There are 14 symbols in total in one slot.

One RO may be several symbols in one slot in the time domain, that is, one slot may contain a plurality of ROs, or one slot may span several slots (i.e., several slots constitute one RO).

One RO is composed of several consecutive PRBs in the frequency domain, and the configuration of ROs in one radio frame is repeated in the time domain with a certain period. As shown in fig. 1, an RO is repeatedly configured in the time domain according to a certain period, each block in fig. 1 is one RO, there are two subframes (as for scs=15 KHz) in one radio frame, and there are 4 ROs in total in the frequency domain. This configuration is repeated in a period of one radio frame.

In the related art, when a new random access trigger cause is introduced, the following two ways are generally adopted to configure the corresponding random access radio resource:

one is to configure additional random access radio resources different from the original random access radio resources;

another way is to share part of the original random access radio resources, and assuming that the number of ROs associated with one SSB on a carrier is greater than 1, three ways exist in the current sharing way:

sharing a certain RO;

sharing even ROs;

sharing an odd RO.

For example, as shown in fig. 2, which is a schematic diagram of the association relationship between ROs and SSBs, there are two synchronization signal blocks (Synchronization Signal Block, SSB) associated with ROs, that is, SSB1 and SSB2, and 4 ROs associated with each SSB, then the sequence numbers of ROs that can be shared according to the existing sharing manner may be {1}, {2}, {3}, {4}, {1,3}, {2,4}. When SSB associated with one RO is greater than or equal to 1, the RO is shared in only one way, i.e., either all ROs can be shared or none of them can be shared.

The order of association between SSB and RO, as specified by the existing standard protocol, includes:

(1) Increment according to preamble index increment in the same RO;

(2) In the same time domain, increasing from low to high according to the position of the frequency domain;

(3) Increasing in order of RO in time domain within one physical random access channel (Physical Random Access Channel, PRACH) time slot;

(4) Increment between different PRACH slots.

PRACH slots refer to slots containing the preceding ROs, the number of ROs that an SSB can associate in the existing 5G NR standard specification is 1,2,4 and 8. And SSBs associated with one RO may be 1,2,4,8, and 16, i.e., each SSB is assigned a preamble at one RO. The above association relationship between SSB and RO can be performed according to the SSB cycle actually sent in the field, that is, the SSB sequence numbers are sequentially associated with the RO from small to large, after the SSB with the largest sequence number is finished, the association between the SSB with the smallest sequence number and the RO is started, and so on, so that all ROs associated with one SSB in one SSB cycle can be referred to as an SSB association RO set.

When introducing the 2-step RACH procedure in the 5G NR system, the original random access radio resources originally reserved for the 4-step RACH can be shared in the manner described above. In the shared RO, a preamble may be allocated in the original reserved preamble as a random access radio resource of the 2-step RACH.

The current method of sharing RO by 2-step RACH and the method of determining preamble range can be applied to the random access method of 2-step RACH. But when a new preamble range is introduced in order to indicate new random access conditions, a further division within the existing reserved preambles is required in order for the network to be able to distinguish between these new random access trigger conditions. The problem caused by this is that with the increasing number of newly introduced random access trigger conditions, the method is limited by a limited preamble range (there are 64 preambles in one RO), so that the preamble range corresponding to each random access condition is small, and the probability of random access collision is improved. The network device needs to increase the random access resources to a certain extent to maintain the proper random access collision probability. The random access resource of the system is limited by the uplink spectrum resource and cannot be excessively increased, so that a new solution is needed.

Based on the above problems, the present invention provides a method for reporting a random access condition, where a terminal device may send a first physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) to a network device; if the first PUSCH carries random access condition information, the random access condition information is used for indicating the reason for triggering random access; wherein the first PUSCH is associated with the first preamble. According to the scheme, the terminal equipment can bear the random access condition information in the first PUSCH associated with the first preamble information, compared with the method for indicating the random access condition through the preamble, the method is not limited by the scope of the preamble, and further division in the reserved preamble is not needed, so that the probability of random access collision can be reduced.

Embodiments of the present application are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User Equipment, or the like.

The terminal device may be a Station (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The network device may further include an access network device and a core network device. I.e. the wireless communication system further comprises a plurality of core networks for communicating with the access network devices. The access network device may be a long-term evolution (LTE) system, a next-generation (NR) system, or an evolved base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, a micro base station (also called "small base station"), a pico base station, an Access Point (AP), a transmission point (transmission point, TP), a new generation base station (new generation Node B, gNodeB), or the like in an licensed assisted access long-term evolution (LAA-LTE) system.

In the embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device (gNB) in NR network, a network device in future evolved PLMN network, or a network device in NTN network, etc.

By way of example, and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In the embodiment of the present application, a network device may provide services for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Fig. 3 is a schematic structural diagram of a communication system to which the embodiment of the present application is applied, where the communication system may include a network device and a terminal device with a communication function, and the method for reporting a random access condition provided by the embodiment of the present application may be implemented through interaction between the network device and the terminal device.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, advanced long term evolution (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolved system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., to which the embodiments of the present application can also be applied.

The communication system in the embodiment of the application can be applied to a carrier aggregation (Carrier Aggregation, CA) scene, a dual-connection (Dual Connectivity, DC) scene and an independent (SA) network deployment scene.

Optionally, the communication system in the embodiment of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiment of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Alternatively, embodiments of the present application may be applied to Non-terrestrial communication network (Non-Terrestrial Networks, NTN) systems, as well as terrestrial communication network (Terrestrial Networks, TN) systems.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.

Optionally, the indication information in the embodiment of the present application includes physical layer signaling. Such as at least one of downlink control information (Downlink Control Information, DCI), radio resource control (Radio Resource Control, RRC) signaling, and medium access control (Media Access Control Control Element, MAC CE).

Optionally, the higher layer parameters or higher layer signaling in the embodiments of the present application include at least one of radio resource control (Radio Resource Control, RRC) signaling and media access control (Media Access Control Control Element, MAC CE).

The following describes the technical solution of the present application by way of examples, and the examples of the present application include some or all of the following:

as shown in fig. 4, a flow chart of a method for reporting a random access condition according to an embodiment of the present application is shown, where the method includes:

401. the terminal device sends a first preamble to the network device.

402. The terminal device transmits a first PUSCH associated with the first preamble to the network device.

Optionally, the first preamble is a preamble corresponding to a 2-step RACH procedure.

Optionally, the first preamble is a preamble corresponding to a 4-step RACH procedure.

Optionally, the first preamble signal may also be a corresponding preamble signal in other random access processes.

Optionally, when the first preamble is a preamble corresponding to a two-step random access procedure, the first preamble and the first PUSCH are carried in a Message a (i.e. Message a) in a 2-step RACH procedure.

That is, the terminal device sends Message a to the network device, including performing 401 and 402 as described above. Message a consists of two parts, a preamble (i.e., first preamble) and a PUSCH resource block associated with the preamble (i.e., first PUSCH). When the terminal device triggers the 2-step RACH procedure, the selection and transmission of the preamble and PUSCH in the message a may follow the existing manner, but random access condition information may be added in the PUSCH resource block, where the random access condition information is related information of a trigger condition for initiating random access by the terminal device.

Whether random access condition information is carried for the first PUSCH or not; there may be two cases:

case one: carrying random access condition information in a first PUSCH;

(1) Carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating the reason for triggering random access;

(2) The first PUSCH carries random access condition information for indicating that the reason for triggering the random access is not distinguished.

Optionally, carrying random access condition information in the first PUSCH includes, but is not limited to, the following implementation manners:

implementation 1: the random access condition information is carried in a medium access control MAC protocol data unit PDU.

Alternatively, the random access condition information may be indicated by a bit in a new MAC control element CE in a MAC protocol data unit (Protocol Data Unit, PDU).

Alternatively, the random access condition information may be indicated by reserved bits in an existing MAC CE in the MAC PDU.

Implementation 2: the random access condition information is carried in RRC signaling.

And a second case: the first PUSCH does not carry random access condition information.

If the first PUSCH does not carry the random access condition information, the first PUSCH indicates to not distinguish the reason for triggering the random access.

Optionally, the reasons for triggering random access include, but are not limited to, at least one of the following (a), (B), (C), and (D):

(A) The terminal device transmits small data packets (small data transmission, SDT) in the inactive state.

(B) -the terminal device requesting coverage enhancement (Coverage enhancement);

(C) The terminal equipment is a simple configuration terminal (reduced capability UE, redcap UE);

(D) At least one network slice (slicking) of the terminal device triggering random access.

Optionally, the random access condition information includes a first indication field, and a value of the first indication field is used to indicate that a cause triggering random access is a target cause of at least one cause.

Optionally, the value of the first indication field includes a first value and/or a second value;

the first value is used for indicating that the reason for triggering the random access condition is a target reason among at least one reason, and the second value is used for indicating that the reason for triggering the random access condition is not distinguished.

Optionally, the random access condition information includes at least one bit; the number of bits of the at least one bit is determined based on the number of network slice groups and/or the number of network slices.

Optionally, the random access condition information includes at least one bit; the value of at least one bit includes: a first indication value and a second indication value;

the first indication value is used for indicating a reason;

the second indicator value is used to indicate that the reason for triggering the random access is not differentiated.

the first indication value is used for indicating the terminal equipment to trigger at least one network slice of random access;

the second indication value is used for indicating the network slice which is not distinguished from the network slice which is triggered by the terminal equipment to randomly cut in;

wherein the bit number of at least one bit is determined according to the number of network slice groups and/or the number of network slices.

Further, the random access condition information may be indicated in different manners according to the reason for triggering the random access indicated by the random access condition information, including but not limited to the following implementation manners:

mode 1: indicating a cause of triggering random access by a first indication value of one bit;

mode 2: the first indication value by one bit indicates that the reason for triggering the random access is not distinguished.

Optionally, the first indication value is 0, or the second indication value is 1, or the first indication value is 1, and the second indication value is 0.

When the random access cause included in the random access condition information is only 1, the cause can be distinguished by 1 bit, for example, one bit can be used for the above reasons (a), (B) and (C).

For example, when the value of a certain bit is 1, 1 reason corresponding to the certain bit may be indicated, and when the value of the certain bit is 0, 1 reason corresponding to the certain bit triggering random access is not distinguished.

Mode 3: at least one network slice for triggering random access by the terminal device is indicated by at least one bit;

mode 4: network slices for triggering random access by the terminal equipment are not distinguished through at least one bit indication;

Since there may be a plurality of network slices or groups of network slices, when a certain network slice or group of network slices is specifically indicated, the indication may be made by at least one bit.

The number of bits of the at least one bit may be determined according to the number of network slice groups, the number of bits of the at least one bit may also be determined according to the number of network slice groups, and the number of network slices.

Mode 5: multiple reasons for triggering random access are indicated through corresponding multiple groups of bit information;

mode 6: indicating a plurality of reasons for triggering random access without distinguishing through corresponding multiple groups of bit information;

wherein each set of bit information corresponds to a cause, and each set of bit information comprises at least one bit.

Mode 7: the random access condition information is index information corresponding to at least one cause.

When the number of random access causes included in the random access condition information is more than 1, the random access condition information may be indicated by an independent coding scheme or a joint coding scheme, and the independent coding scheme indicates that the trigger causes are indicated by respective independent information bits, which corresponds to the above-described modes 5 and 6. The joint coding method refers to coding methods other than independent coding, and for example, a specific combination is indexed by one index number, which corresponds to the above-described method 7. The following exemplary descriptions are respectively directed to an independent coding scheme and a joint coding scheme:

Independent coding mode:

it is assumed that the random access causes A, B and C require a bit, b bit and C bit, respectively, to distinguish different situations. Then when any 2 or 3 of the reasons need to be combined together, the independent coding scheme uses a bits, B bits and C bits to independently represent the random access reasons a, B and C. Wherein, when the value of the a bit is 1, the random access reason A is indicated; when the value of the B bit is 1, the random access reason B is indicated; when the value of C bit is 1, the random access cause C is indicated. As shown in table 1 below, a specific indication scheme for indicating random access condition information by an independent coding scheme is shown.

Random access condition information \bits	a bit	b bits	c bits
Without distinction	0	0	0
A	1	0	0
B	0	1	0

A+B	1	1	0
C	0	0	1
A+C	1	0	1
B+C	0	1	1
A+B+C	1	1	1

TABLE 1

In table 1, when the a bit, the B bit, and the C bit are all 0, it is indicated that there is no need to distinguish between the random access causes a, B, and C.

Joint coding scheme:

the combination coding mode generally needs to code the combination of reasons, and can set corresponding indexes for different random access condition information, as shown in table 2, the last 3 combinations (namely a+ C, B +c and a+b+c) in table 2, if a reasonable combination mode is not input, no expression is needed, and reservation can be performed to facilitate subsequent expansion, so that bits corresponding to the unreasonable combination mode are saved.

Random access condition information	Joint coding
Without distinction	0
A	1
B	2
A+B	3
C	4
A+C	Reservation
B+C	Reservation
A+B+C	Reservation

TABLE 2

The situation where no distinction is needed may be represented by at least one bit (code point), or may be represented by whether this random access condition information exists, that is, the random access condition information is not carried in the first PUSCH.

403. The network device sends a random access response message to the terminal device.

In the 2-step RACH procedure, 403 may be a Message B (i.e., message B) sent by the network device to the terminal device.

When the reporting method of the random access condition is applied to the 2-step RACH process, the following advantages exist:

(1) All procedures of the existing 2-step RACH can be reused except for the point of carrying random access trigger condition information;

(2) The existing 2-step RACH radio resources can be reused, i.e. no new 2-step RACH radio resources need to be added;

(3) No further partitioning of the 2-step RACH radio resources is required, so that the random access collision probability is not increased.

The invention provides a reporting method of random access condition, in the method, terminal equipment can send a first PUSCH to network equipment; carrying random access condition information in a first PUSCH, wherein the random access condition information is used for indicating at least one reason for triggering random access; wherein the first PUSCH is associated with the first preamble. According to the scheme, the terminal equipment can bear the random access condition information in the first PUSCH associated with the first preamble information, compared with the method for indicating the random access condition through the preamble, the method is not limited by the scope of the preamble, and further division in the reserved preamble is not needed, so that the probability of random access collision can be reduced.

As shown in fig. 5, an embodiment of the present invention provides a terminal device, including:

a sending module 501, configured to send a first physical uplink shared channel PUSCH to a network device;

carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating the reason for triggering random access;

wherein the first PUSCH is associated with the first preamble.

Optionally, the random access condition information is further used to indicate that the reason for triggering the random access is not differentiated.

Optionally, if the first PUSCH does not carry the random access condition information, the first PUSCH indicates to not distinguish the reason for triggering the random access.

Optionally, the reason for triggering the random access includes at least one of the following reasons:

the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of the random access.

the first indication value is used for indicating a reason;

Optionally, the random access condition information is index information, and the index information corresponds to at least one reason.

Optionally, carrying random access condition information in the MAC PDU;

optionally, the random access condition information is carried in RRC signaling.

Optionally, the random access condition information is indicated by a bit in a new MAC CE in the MAC PDU;

alternatively, the random access condition information is indicated by reserved bits in an existing MAC CE in the MAC PDU.

Optionally, the sending module 501 is further configured to:

the first preamble is transmitted to a network device.

Optionally, the first preamble signal is a preamble signal corresponding to a two-step random access procedure.

Optionally, the first preamble and the first PUSCH are carried in a message a in a two-step random access procedure.

As shown in fig. 6, an embodiment of the present invention provides a network device, including:

a receiving module 601, configured to receive a first PUSCH sent by a terminal device;

Wherein the first PUSCH is associated with the first preamble.

Optionally, the random access condition information is used for indicating that the reason for triggering the random access is not differentiated.

the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of the random access.

the first indication value is used for indicating a reason;

Optionally, carrying random access condition information in the MAC PDU;

wherein, the random access condition information is indicated by bits in a new MAC CE in the MAC PDU;

or,

the random access condition information is indicated by reserved bits in the existing MAC CE in the MAC PDU.

Optionally, the receiving module 601 is further configured to receive a first preamble signal sent by the terminal device.

The embodiment of the invention also provides a terminal device, which comprises: a memory storing executable program code;

a processor coupled to the memory;

the processor invokes the executable program code stored in the memory to execute the reporting method of the random access condition executed by the terminal device in the embodiment of the invention.

The embodiment of the invention also provides a network device, which comprises: a memory storing executable program code;

a processor coupled to the memory;

the processor invokes the executable program code stored in the memory to execute the method for reporting the random access condition executed by the network device in the embodiment of the invention.

As shown in fig. 7, the network device in the embodiment of the present invention may be a base station, where the base station includes: a receiver 701, a transmitter 702, and a processor 703;

a receiver 701, configured to receive a first PUSCH transmitted by a terminal device;

Carrying random access condition information in a first PUSCH, wherein the random access condition information is used for indicating at least one reason for triggering random access;

wherein the first PUSCH is associated with the first preamble.

Optionally, the random access condition information is used to indicate that the reason for triggering the random access is not differentiated.

Optionally, the reason for triggering the random access includes at least one of the following reasons: the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of the random access.

the first indication value is used for indicating a reason;

Optionally, carrying random access condition information in the MAC PDU;

Or,

Optionally, the receiver 701 is further configured to receive a first preamble signal sent by the terminal device.

Fig. 8 is a schematic hardware structure of a terminal device according to an embodiment of the present invention. The terminal device may include: radio Frequency (RF) circuitry 810, memory 820, processor 830, and the like. Wherein the radio frequency circuit 810 includes a receiver 811 and a transmitter 812. It will be appreciated by those skilled in the art that the structure of the terminal device shown in fig. 8 does not constitute a limitation of the terminal device, and may include more or fewer components than shown, or may combine certain components, or may have a different arrangement of components.

The RF circuit 810 can be used for receiving and transmitting signals during the process of receiving and transmitting information or communication, in particular, after receiving downlink information of the base station, the downlink information is processed by the processor 830; in addition, the data of the design uplink is sent to the base station. Typically, the RF circuitry 810 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (low noise amplifier, LNA), a duplexer, and the like. In addition, the RF circuitry 810 may also communicate with networks and other devices via wireless communications. The wireless communications may use any communication standard or protocol including, but not limited to, global system for mobile communications (global system of mobile communication, 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), long term evolution (long term evolution, LTE), email, short message service (short messaging service, SMS), and the like.

The memory 820 may be used to store software programs and modules, and the processor 830 performs various functional applications and data processing of the terminal device by executing the software programs and modules stored in the memory 820. The memory 820 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the terminal device, and the like. In addition, memory 820 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 830 is a control center that connects various parts of the entire terminal device using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 820 and calling data stored in the memory 820, thereby performing overall monitoring of the terminal device. Optionally, processor 830 may include one or more processing units; preferably, the processor 830 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, etc., and the modem processor primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 830.

In the embodiment of the present invention, the transmitter 812 is configured to transmit a first physical uplink shared channel PUSCH to a network device;

if the first PUSCH carries random access condition information, the random access condition information is used for indicating at least one reason for triggering random access;

wherein the first PUSCH is associated with the first preamble.

the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of the random access.

the first indication value is used for indicating a reason;

Optionally, carrying random access condition information in a media access control MAC protocol data unit PDU;

Optionally, the random access condition information is indicated by a bit in a new MAC control element CE in the MAC PDU;

Optionally, the transmitter 812 is further configured to:

the first preamble is transmitted to a network device.

The embodiment of the invention also provides a computer readable storage medium, comprising: computer instructions, when run on a computer, cause the processor to perform the various processes of the terminal device as in the method embodiments described above.

The embodiment of the invention also provides a computer readable storage medium, comprising: computer instructions, when run on a computer, cause a processor to perform the various processes of the network device as in the method embodiments described above.

The embodiment of the invention also provides a computer program product, which comprises computer instructions, and when the computer program product runs on a computer, a processor runs the computer instructions, so that the processor executes each process of the terminal equipment in the embodiment of the method.

Embodiments of the present invention also provide a computer program product comprising computer instructions which, when the computer program product is run on a computer, cause a processor to execute the respective processes of the network device as in the method embodiments described above.

The embodiment of the invention also provides a chip, which is coupled with the memory in the terminal equipment, so that the chip calls the program instructions stored in the memory when in operation, and the terminal equipment executes the processes of the terminal equipment in the embodiment of the method.

The embodiment of the invention also provides a chip, which is coupled with the memory in the network equipment, so that the chip calls the program instructions stored in the memory when running, and the network equipment executes the processes of the network equipment in the embodiment of the method.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present invention are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be stored by a computer or data storage devices such as servers, data centers, etc. that contain an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

The reporting method of the random access condition is characterized by being applied to terminal equipment and comprising the following steps:

transmitting a first Physical Uplink Shared Channel (PUSCH) to a network device;

carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating a reason for triggering random access;

Wherein the first PUSCH is associated with a first preamble.
The method of claim 1, wherein the reason for indicating the trigger random access comprises at least one of:

the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of random access.
The method of claim 2, wherein the step of determining the position of the substrate comprises,

the random access condition information comprises a first indication domain, and the value of the first indication domain is used for indicating the reason for triggering random access to be a target reason in the at least one reason.
The method of claim 3, wherein the step of,

the value of the first indication field comprises a first value and/or a second value;

the first value is used for indicating that the reason of the trigger random access condition is a target reason among the at least one reason, and the second value is used for indicating that the reason of the trigger random access condition is not distinguished.
The method according to claim 3 or 4, characterized in that the random access condition information comprises at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
The method according to any one of claim 1 to 5, wherein,

the random access condition information is index information, the index information corresponding to the at least one cause.
The method according to any one of claim 1 to 6, wherein,

carrying the random access condition information in a Media Access Control (MAC) Protocol Data Unit (PDU);

or,

and carrying the random access condition information in RRC signaling.
The method of claim 7, wherein the step of determining the position of the probe is performed,

indicating the random access condition information by a bit in a new MAC control element CE in the MAC PDU;

or,

and indicating the random access condition information through reserved bits in the existing MAC CEs in the MAC PDU.
The method according to any one of claims 1 to 8, characterized in that the method comprises:

the first preamble is sent to the network device.
The method according to any one of claims 1 to 9, wherein,

the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
The method of claim 10, wherein the first preamble and the first PUSCH are carried in message a in the two-step random access procedure.
The method according to any one of claims 1 to 11, wherein if the random access condition information is not carried in the first PUSCH, the first PUSCH is used to indicate that the reason for triggering random access is not differentiated.
The reporting method of the random access condition is characterized by being applied to network equipment and comprising the following steps:

receiving a first PUSCH sent by terminal equipment;

carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating a reason for triggering random access;

wherein the first PUSCH is associated with a first preamble.
The method of claim 13, wherein the reason for indicating triggering random access comprises at least one of:

the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of random access.
The method of claim 14, wherein the step of providing the first information comprises,

the random access condition information comprises a first indication domain, and the value of the first indication domain is used for indicating the reason for triggering random access to be a target reason in the at least one reason.
The method of claim 15, wherein the step of determining the position of the substrate comprises,

the value of the first indication field comprises a first value and/or a second value;

the first value is used for indicating that the reason of the trigger random access condition is a target reason among the at least one reason, and the second value is used for indicating that the reason of the trigger random access condition is not distinguished.
The method according to claim 15 or 16, wherein,

the random access condition information comprises at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
The method according to any one of claims 13 to 17, wherein,

the random access condition information is index information, the index information corresponding to the at least one cause.
The method according to any one of claims 13 to 18, wherein,

carrying the random access condition information in a MAC PDU;

or,

and carrying the random access condition information in RRC signaling.
The method of claim 19, wherein the step of determining the position of the probe comprises,

indicating the random access condition information through bits in a new MAC CE in the MAC PDU;

Or,

and indicating the random access condition information through reserved bits in the existing MAC CEs in the MAC PDU.
The method according to any one of claims 13 to 20, characterized in that the method comprises:

and receiving the first preamble signal sent by the terminal equipment.
The method according to any one of claims 13 to 21, wherein,

the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
The method of claim 22, wherein the first preamble and the first PUSCH are carried in message a in the two-step random access procedure.
The method according to any one of claims 13 to 23, wherein if the random access condition information is not carried in the first PUSCH, the first PUSCH is used to indicate that the reason for triggering random access is not differentiated.
A terminal device, comprising:

a transmitter configured to transmit a first PUSCH to a network device;

carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating a reason for triggering random access;

wherein the first PUSCH is associated with a first preamble.
The terminal device of claim 25, wherein the reason for the indication to trigger random access comprises at least one of:

the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of random access.
The terminal device of claim 26, wherein the terminal device,

the random access condition information comprises a first indication domain, and the value of the first indication domain is used for indicating the reason for triggering random access to be a target reason in the at least one reason.
The terminal device of claim 27, wherein the terminal device,

the value of the first indication field comprises a first value and/or a second value;

the first value is used for indicating that the reason of the trigger random access condition is a target reason among the at least one reason, and the second value is used for indicating that the reason of the trigger random access condition is not distinguished.
Terminal device according to claim 27 or 28, characterized in that,

the random access condition information comprises at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
Terminal device according to any of the claims 25 to 29, characterized in that,

the random access condition information is index information, the index information corresponding to the at least one cause.
Terminal device according to any of the claims 25 to 30, characterized in that,

carrying the random access condition information in a Media Access Control (MAC) Protocol Data Unit (PDU);

or,

and carrying the random access condition information in RRC signaling.
The terminal device of claim 31, wherein the terminal device,

indicating the random access condition information by a bit in a new MAC control element CE in the MAC PDU;

or,

and indicating the random access condition information through reserved bits in the existing MAC CEs in the MAC PDU.
A terminal device according to any of claims 25 to 32, wherein the transmitter is configured to:

the first preamble is sent to the network device.
Terminal device according to any of the claims 23 to 33, characterized in that,

the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
The terminal device of claim 34, wherein the first preamble and the first PUSCH are carried in message a in the two-step random access procedure.
The terminal device according to any of claims 25 to 35, wherein if the random access condition information is not carried in the first PUSCH, the first PUSCH is used to indicate that the reason for triggering random access is not differentiated.
A network device, comprising:

a receiver, configured to receive a first PUSCH transmitted by a terminal device;

and carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating the reason for triggering random access, and the first PUSCH is associated with a first preamble signal.
The network device of claim 37, wherein the network device,

the reasons for triggering random access include at least one of the following reasons:

the terminal equipment transmits small data packets in an inactive state;

the terminal equipment requests coverage enhancement;

the terminal equipment is a simple terminal;

the terminal device triggers at least one network slice of random access.
The network device of claim 38, wherein the network device,

the random access condition information comprises a first indication domain, and the value of the first indication domain is used for indicating the reason for triggering random access to be a target reason in the at least one reason.
The network device of claim 39, wherein,

the value of the first indication field comprises a first value and/or a second value;

the first value is used for indicating that the reason of the trigger random access condition is a target reason among the at least one reason, and the second value is used for indicating that the reason of the trigger random access condition is not distinguished.
The network device of claim 39 or 40, wherein,

the random access condition information comprises at least one bit; the number of bits of the at least one bit is determined according to the number of network slice groups and/or the number of network slices.
The network device of any of claims 37 to 41, wherein the random access condition information is index information, the index information corresponding to the at least one cause.
The network device according to any of claims 37 to 42, characterized in that the random access condition information is carried in a MAC PDU;

or alternatively, the first and second heat exchangers may be,

and carrying the random access condition information in RRC signaling.
The network device of claim 43,

indicating the random access condition information through bits in a new MAC CE in the MAC PDU;

Or,

and indicating the random access condition information through reserved bits in the existing MAC CEs in the MAC PDU.
The network device of any one of claims 37 to 44, wherein,

the receiver is further configured to receive the first preamble signal sent by the terminal device.
The network device of any one of claims 37 to 45,

the first preamble signal is a preamble signal corresponding to a two-step random access procedure.
The network device of claim 46, wherein the first preamble and the first PUSCH are carried in message a in the two-step random access procedure.
The network device of any one of claims 37 to 47,

if the random access condition information is not carried in the first PUSCH, the first PUSCH is used for indicating that the reason for triggering the random access is not distinguished.
A terminal device, comprising:

a sending module, configured to send a first physical uplink shared channel PUSCH to a network device;

and carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating the reason for triggering random access, and the first PUSCH is associated with a first preamble signal.
A network device, comprising:

a receiving module, configured to receive a first PUSCH transmitted by a terminal device;

and carrying random access condition information in the first PUSCH, wherein the random access condition information is used for indicating the reason for triggering random access, and the first PUSCH is associated with a first preamble signal.
A computer-readable storage medium, comprising: computer instructions which, when run on a computer, cause the processor to perform the method of any one of claims 1 to 12 or to perform the method of any one of claims 13 to 24.