CN114080051A

CN114080051A - Two-step random access method, user equipment and network side equipment

Info

Publication number: CN114080051A
Application number: CN202010848283.0A
Authority: CN
Inventors: 黄学艳
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-02-22

Abstract

The invention provides a two-step random access method, user equipment and network side equipment, which are used for solving the problem of how to further improve the data transmission efficiency when PUSCH is sent in the two-step random access process. The two-step random access method corresponding to the user equipment side comprises the following steps: in the random access process, a first Physical Uplink Shared Channel (PUSCH) is sent, wherein the first Physical Uplink Shared Channel (PUSCH) carries resource indication information, and the resource indication information is used for indicating target transmission resources with channel quality meeting preset requirements in a synchronization period. Therefore, the base station can schedule the target transmission resource with better channel quality based on the resource indication information, so that the data scheduling is more accurately carried out, and the data transmission efficiency is improved.

Description

Two-step random access method, user equipment and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a two-step random access method, a user equipment, and a network side device.

Background

In the NR (New Radio, New air interface) R15 standard, a procedure for a User Equipment (UE) to initiate a Contention-based Random Access (CBRA) is roughly as follows: 1) a user equipment sends an uplink signal containing a Preamble sequence (Preamble) on a Physical Random Access Channel (PRACH) resource, which is called Msg (message) 1; 2) the user equipment receives a Random Access Response (RAR) sent by the gNB (NR node), which is called Msg 2; 3) the user equipment sends uplink data on the uplink time-frequency resource indicated by the RAR, and the uplink data is called Msg 3; 4) the user equipment receives downlink data sent by the gNB, wherein the downlink data contains information related to contention resolution, and is called Msg 4. The above procedure is called 4-step RACH (Random Access Channel).

In order to reduce the random access delay, a 2-step RACH flow is introduced in the NR R16 standard. The 2-step RACH is formed by gathering the Msg1 and the Msg3 in the original 4-step RACH and sending the Msg1 and the Msg3 in one step, and is called MsgA; msg2 and Msg4 are further combined into MsgB, as shown in fig. 1. In this way, the user equipment may send a PUSCH (Physical Uplink Shared Channel) for carrying the Msg3 when sending MsgA in the first step. The system can also configure more PUSCH resources, so that the PUSCH can carry other data besides the Msg 3. Therefore, how to further improve the efficiency of data transmission in the process of transmitting the PUSCH becomes a problem to be solved.

Disclosure of Invention

The invention aims to provide a two-step random access method, user equipment and network side equipment, so as to solve the problem of how to further improve the efficiency of data transmission in the process of sending PUSCH in the two-step random access process.

In order to achieve the above object, in a first aspect, the present invention provides a two-step random access method for a user equipment, including:

in the random access process, a first Physical Uplink Shared Channel (PUSCH) is sent, wherein the first Physical Uplink Shared Channel (PUSCH) carries resource indication information, and the resource indication information is used for indicating target transmission resources with channel quality meeting preset requirements in a synchronization period.

Optionally, the target transmission resource is at least one of the following transmission resources: a transmission resource corresponding to the first synchronization signal block SSB, a transmission resource corresponding to the second synchronization signal block SSB, a transmission resource corresponding to the first channel state information reference signal CSI-RS and a transmission resource corresponding to the second channel state information reference signal CSI-RS;

the first synchronization signal block SSB is a synchronization signal block SSB in which a reference signal received power RSRP measurement value is greater than a reference signal received power RSRP measurement value of an uplink pilot signal; the second synchronization signal block SSB is a synchronization signal block SSB with a maximum reference signal received power RSRP measurement value, and the first channel state information reference signal CSI-RS is a channel state information reference signal CSI-RS with a reference signal received power RSRP measurement value larger than that of the uplink pilot signal; and the second channel state information reference signal CSI-RS is the channel state information reference signal CSI-RS with the maximum reference signal received power RSRP measurement value.

Optionally, the physical uplink shared channel PUSCH further carries difference information, which is used to indicate a difference between a reference signal received power RSRP measurement value of the target transmission resource and a reference signal received power RSRP measurement value of the uplink pilot signal.

Optionally, before sending the first physical uplink shared channel PUSCH, the method further includes:

judging whether the resource indication information needs to be sent or not;

and entering the step of sending a first Physical Uplink Shared Channel (PUSCH) under the condition that the resource indication information needs to be sent, otherwise sending a second Physical Uplink Shared Channel (PUSCH) which does not carry the resource indication information.

Optionally, it is determined whether the resource indication information needs to be sent according to at least one of the following policies:

determining that the resource indication information needs to be sent under the condition that the user equipment also comprises data to be sent;

determining that the resource indication information needs to be sent under the condition that the user equipment needs to send a Buffer Status Report (BSR);

and determining that the resource indication information needs to be sent under the condition that the target transmission resource exists in the synchronization period.

Optionally, the first physical uplink shared channel PUSCH also carries service data, and a logical channel carrying the service data is related to a service parameter corresponding to the service data.

Optionally, the service parameter includes at least one of the following parameters: a service priority parameter, a service type parameter, and a service quality of service (QOS) parameter.

In a second aspect, the present invention further provides a two-step random access method, for a network side device, including:

in the random access process, a first Physical Uplink Shared Channel (PUSCH) is received, wherein the first Physical Uplink Shared Channel (PUSCH) carries resource indication information, and the resource indication information is used for indicating target transmission resources with channel quality meeting preset requirements in a synchronization period.

In a third aspect, an embodiment of the present invention further provides another two-step random access method, used for a user equipment, including:

in the random access process, a first Physical Uplink Shared Channel (PUSCH) is sent, the PUSCH also carries service data, and a logical channel for bearing the service data is related to service parameters corresponding to the service data.

In a fourth aspect, an embodiment of the present invention further provides another two-step random access method, where the two-step random access method is used for a network side device, and includes:

in the random access process, a first Physical Uplink Shared Channel (PUSCH) is received, the first Physical Uplink Shared Channel (PUSCH) also carries service data, and a logical channel for bearing the service data is related to service parameters corresponding to the service data.

In a fifth aspect, an embodiment of the present invention further provides a user equipment, including a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the program, the two-step random access method corresponding to the user equipment side provided by the invention is realized.

In a sixth aspect, an embodiment of the present invention further provides a network-side device, including a memory, a processor, and a computer program that is stored in the memory and is executable on the processor; when the processor executes the program, the two-step random access method corresponding to the network side equipment side provided by the invention is realized.

In a seventh aspect, an embodiment of the present invention further provides a readable storage medium, where a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the two-step random access method corresponding to the user equipment side or the network side device provided by the present invention is implemented.

The technical scheme of the invention at least has the following beneficial effects:

the base station can schedule target transmission resources with better channel quality based on the resource indication information sent by the user equipment, thereby more accurately scheduling data and improving the efficiency of data transmission.

Drawings

Fig. 1 is a schematic flow chart of a two-step random access method provided by an embodiment of the present invention;

fig. 2 is one of flowcharts of a two-step random access method corresponding to a user equipment side according to an embodiment of the present invention;

fig. 3 to fig. 5 are schematic diagrams of triggering conditions for CSI transmission according to an embodiment of the present invention;

fig. 6 is a flowchart of a two-step random access method corresponding to a network side device according to an embodiment of the present invention;

fig. 7 is a second flowchart of a two-step random access method corresponding to the ue side according to the embodiment of the present invention;

fig. 8 is a second flowchart of a two-step random access method corresponding to a network-side device according to an embodiment of the present invention;

fig. 9 is one of the structural diagrams of the user equipment provided by the embodiment of the present invention;

fig. 10 is one of the structural diagrams of the network side device according to the embodiment of the present invention;

fig. 11 is a second block diagram of a ue according to a second embodiment of the present invention;

fig. 12 is a second structural diagram of a network-side device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Referring to fig. 2, fig. 2 is a flowchart illustrating a two-step random access method for a user equipment according to an embodiment of the present invention. As shown in fig. 2, the method comprises the steps of:

step 201, in a random access process, sending a first PUSCH, where the first PUSCH carries resource indication information, and the resource indication information is used to indicate a target transmission resource for which channel quality in a synchronization period meets a preset requirement.

In the two-step random access process, the ue may send a first PUSCH, for example, CSI (Channel State Information), BSR (Buffer State reporting), PHR (power headroom reporting), C-RNTI (Cell-Radio Network Temporary Identifier), data Information, and the like, to the base station when sending the pilot message in the first step. The first PUSCH carries resource indication information, which may be used to indicate a target transmission resource with better channel quality, and after acquiring the resource indication information, the base station may perform uplink data scheduling according to the target transmission resource indicated by the resource indication information.

Therefore, the base station can schedule the target transmission resource with better channel quality in the subsequent data transmission, thereby more accurately scheduling data and improving the efficiency of data transmission. And the base station can more pertinently schedule the transmission of the uplink data of the user equipment according to the actual data transmission requirement, thereby improving the flexibility of resource scheduling.

Optionally, the target transmission resource is at least one of the following transmission resources: a transmission resource corresponding to a first SSB (Synchronization Signal and PBCH block, Synchronization Signal block), a transmission resource corresponding to a second SSB, a transmission resource corresponding to a first CSI-RS (Channel State Information Reference Signal), and a transmission resource corresponding to a second CSI-RS;

the first SSB is an SSB in which an RSRP (Reference Signal Received Power) measurement value is greater than an RSRP measurement value of the uplink pilot Signal, and the second SSB is an SSB in which the RSRP measurement value is the largest; the first CSI-RS is a CSI-RS of which the RSRP measurement value is larger than that of the uplink pilot signal, and the second CSI-RS is a CSI-RS of which the RSRP measurement value is the maximum.

In a TDD (Time Division Duplexing) system, a base station may estimate an RSRP value received using a best beam based on RSPR of a received pilot signal, received power of PUSCH, a difference between an RSRP corresponding to a resource with a best channel quality and an RSRP corresponding to a resource with a pilot signal, using channel reciprocity. Therefore, when the user equipment sends the uplink pilot signal to the base station, the base station may estimate the channel quality of the uplink data link according to the pilot signal, such as an estimated RSRP value, signal strength, and the like, based on the estimated information and interference information, a target transmission resource with better channel quality may be obtained, and accurate uplink data scheduling may be performed based on the target transmission resource.

The target transmission resource may include a transmission resource corresponding to the first SSB or a transmission resource corresponding to the CSI-RS, such as an SSB index or a CSI-RS index, which may indicate a resource with the best channel quality in the synchronization period.

The first SSB is an SSB whose RSRP measurement value is greater than the RSRP measurement value of the uplink pilot signal, and it can be seen that the channel quality of the transmission resource corresponding to the first SSB is better than the channel quality of the resource occupied by the uplink pilot signal. Therefore, when the base station performs resource scheduling subsequently, the base station can utilize the transmission resource corresponding to the first SSB to perform data transmission, and the efficiency and reliability of data transmission can be improved.

The second SSB is the SSB with the largest RSRP measurement value in the synchronization period, and it can be seen that the channel quality of the transmission resource corresponding to the second SSB is better than the channel quality of the resource occupied by the uplink pilot signal, so that the base station can schedule the transmission resource corresponding to the second SSB according to the data transmission requirement when performing resource scheduling subsequently, and the efficiency and reliability of data transmission can be further improved.

The first CSI-RS is a CSI-RS whose RSRP measurement value is greater than that of the uplink pilot signal, and it can be seen that the channel quality of the transmission resource corresponding to the first CSI-RS is better than the channel quality of the resource occupied by the uplink pilot signal. Therefore, when the base station performs resource scheduling subsequently, the base station can schedule the transmission resource corresponding to the first CSI-RS for data transmission, and the efficiency and reliability of data transmission can be improved.

The second CSI-RS is the CSI-RS with the largest RSRP measurement value in the synchronization period, and it can be seen that the channel quality of the transmission resource corresponding to the second CSI-RS is better than the channel quality of the resource occupied by the uplink pilot signal, so that the base station can schedule the transmission resource corresponding to the second CSI-RS according to the data transmission requirement when performing resource scheduling subsequently, and the efficiency and reliability of data transmission can be further improved.

The target transmission resource may include one or more of the above resources, and when the target transmission resource includes multiple resources of the above resources, the base station may schedule, according to a requirement of the data to be transmitted, a resource matched with the data to be transmitted in a targeted manner, so as to improve efficiency of data transmission and flexibility of resource scheduling.

In this embodiment, based on the result of estimating the channel quality of the uplink data link, the transmission resource with better channel quality can be obtained, so that the base station performs data transmission by using the transmission resource with better channel quality when performing subsequent resource scheduling, and the efficiency of data transmission can be improved. In specific application, the base station can also select corresponding transmission resources for scheduling according to actual data transmission requirements, so that the scheduling mode of the resources can be further optimized, and the efficiency of data transmission can be improved.

Optionally, the PUSCH further carries difference information, which is used to indicate a difference between an RSRP measurement value of the target transmission resource and an RSRP measurement value of the uplink pilot signal.

In this embodiment, the PUSCH carries difference information, and based on the difference information, the base station can more accurately obtain a specific comparison result of the target transmission resource and the uplink pilot signal, that is, a difference between the RSRP measurement value of the target transmission resource and the RSRP measurement value of the uplink pilot signal. Based on the difference information, the base station can select corresponding transmission resources according to actual conditions, so that resource waste can be reduced, and the efficiency of data transmission can be improved.

Optionally, before sending the first PUSCH, the method further includes:

judging whether the resource indication information needs to be sent or not;

and entering the step of sending the first PUSCH under the condition that the resource indication information needs to be sent, otherwise sending a second PUSCH which does not carry the resource indication information.

In this embodiment, before transmitting the first PUSCH, the user equipment may first determine whether the resource indication information needs to be transmitted according to actual conditions.

Further, whether the resource indication information needs to be sent is judged according to at least one of the following strategies:

and determining that the resource indication information needs to be sent under the condition that the user equipment also comprises data to be sent.

Under the condition that the user equipment also comprises data to be transmitted, in order to facilitate the base station to better transmit the data to be transmitted, the user equipment can transmit resource indication information to the base station, so that the base station flexibly performs resource scheduling based on target transmission resources indicated by the resource indication information, and the efficiency of data transmission is improved.

And determining that the resource indication information needs to be sent under the condition that the user equipment needs to send the BSR.

And thirdly, determining that the resource indication information needs to be sent under the condition that the target transmission resource exists in the synchronization period.

If the channel quality of the resource occupied by the user equipment for sending the pilot signal in the synchronization period is not the best, that is, the target transmission resource exists in the synchronization period, and the channel quality of the target transmission resource is better than the channel quality of the resource corresponding to the pilot signal. In this case, the user equipment may send the resource indication information to the base station, so that the base station obtains the target transmission resource in the synchronization period based on the resource indication information, thereby flexibly scheduling the target transmission resource according to the actual condition of the data to be transmitted in the subsequent data transmission, and improving the efficiency of data transmission.

For example, as shown in fig. 3, the resource occupied by the ue sending the pilot signal is SSB #0, and the resource with the best channel quality in the synchronization period is SSB #3, and when scheduling subsequent resources, the base station may schedule the resource corresponding to SSB #3 for data transmission; as shown in fig. 4, the resource occupied by the user equipment for transmitting the pilot signal is RO #0, and the resource with the best channel quality in the synchronization period is RO #3, and when scheduling the subsequent resource, the base station may schedule the resource corresponding to RO #3 for data transmission; as shown in fig. 5, the resource occupied by the ue to transmit the pilot signal is PUSCH #0, and the resource with the best channel quality in the synchronization period is PUSCH #3, and during subsequent resource scheduling, the base station may schedule the resource corresponding to PUSCH #3 for data transmission.

Under the condition of any one or more of the three strategies, the sending of the resource indication information can be triggered. If the resource indication information is determined to need to be sent according to the strategy, sending the resource indication information for indicating the target transmission resource while sending the first PUSCH, so that the base station carries out scheduling on the target transmission resource based on the indication information, and the data transmission efficiency is improved; and if the resource indication information does not need to be transmitted, transmitting a second PUSCH to the base station, wherein the second PUSCH does not carry the resource indication information, and the flexibility of information transmission can be improved.

In specific implementation, while the resource indication information is configured based on the above policy, the logical channel may be further configured according to service parameters, such as service priority, service type, service quality, and the like. Specifically, two or more than two logical channels may be configured according to different service parameters, so as to support the user equipment to perform service data transmission of different service parameters, and the configured logical channels may be associated with the service parameters of the service data, so that after the base station acquires the service data, the base station may acquire the service parameters of the service data based on the association relationship, thereby flexibly performing resource scheduling.

When configuring the information, if the ue is in an RRC (Radio Resource Control) connected state, the information may be configured through an RRC dedicated signaling; if the user equipment is in an RRC inactive state, the user equipment can be configured through signaling when the RRC connected state is released to enter the RRC inactive state; if the user equipment is in the RRC idle state, the configuration may be broadcasted through system information.

To facilitate a further understanding of the above-described embodiments, they are illustrated below in conjunction with the detailed description.

When the user equipment is in an RRC inactive state and the user equipment is released from the RRC connected state to enter the RRC inactive state, the base station configures the C-RNTI for the user equipment. The specific data receiving and sending process is as follows:

the user equipment receives 2-step RACH configuration information sent by a base station;

based on the configuration information, the user equipment sends MsgA including preamble (random access preamble) and PUSCH to the base station, wherein the content carried in the PUSCH includes C-RNTI and data information, and may also include CSI.

A base station sends an access response message msgB to user equipment, and the msgB is scrambled through a C-RNTI;

and the user equipment receives the msgB sent by the base station and confirms that the data sent by the PUSCH where the user equipment is located is successfully transmitted.

Wherein the CSI information includes LI and Δ_RSRPAt least one item of (1). The LI is an SSB index or a CSI-RS index and represents a synchronization signal block with the best channel quality in a synchronization period or a CSI-RS resource with the best channel quality; delta_RSRPThe difference value between the RSRP of the synchronization signal block corresponding to the synchronization signal block with the best channel quality and the RSRP of the synchronization signal block corresponding to the resource occupied by the pilot signal sent by the user equipment, or the difference value of the RSRP of the synchronization signal block corresponding to the channel qualityAnd the difference value between the RSRP corresponding to the CSI-RS with the best quality and the RSRP corresponding to the CSI-RS occupied by the resource sent by the user equipment.

The base station can obtain the resource with better channel quality in the synchronous period based on the LI information, so that the resource with better channel quality can be selected for scheduling according to the data to be transmitted when the resource scheduling is carried out, and the efficiency and the flexibility of data transmission are improved. Based on Δ_RSRPThe base station can obtain the RSRP difference value of the resource occupied by the pilot signal and the resource with the best channel quality, so that the corresponding resource can be flexibly selected for scheduling based on the difference value, and the efficiency and the flexibility of data transmission are improved.

When the user equipment sends the PUSCH to the base station, it may select whether to carry CSI in the PUSCH according to an actual situation of data, and specifically may send CSI to the base station under the following situations:

in a first case, a user equipment has data to be sent, that is, data is sent in a logical channel corresponding to a Media Access Control (MAC) entity, where the data to be sent and the data being sent may be the same logical channel or different logical channels;

in case two, the channel quality of the SSB or CSI-RS corresponding to the resource occupied by the user to send the pilot signal in the synchronization period is not the best.

In the case that the ue sends CSI, the base station may be based on LI and Δ carried in the CSI information sent by the ue_RSRPAnd resources with better channel quality are obtained, so that scheduling is carried out in subsequent resource transmission to improve the efficiency of data transmission.

The content carried by the PUSCH may further include a logical channel and its carrying data, and specifically, at least two logical channel types may be configured according to different service parameters, so that different service data sent by the user equipment may be supported, and the base station may also obtain the service parameters of the service data according to the logical channel type carrying the service data, thereby performing flexible scheduling in subsequent data transmission. The at least two logical channel IDs may be configured through signaling or default values preset by the system.

In this embodiment, the ue determines whether the reported information needs to carry the resource indication information according to the actual situation, so that the base station can perform more accurate uplink data scheduling according to the reported information of the ue, thereby improving the data transmission efficiency.

Optionally, the first PUSCH also carries service data, and a logical channel carrying the service data is related to a service parameter corresponding to the service data.

Wherein the service parameter includes at least one of the following parameters: a Service priority parameter, a Service type parameter, and a Quality of Service (QOS) parameter.

In this embodiment, the first PUSCH may carry the resource indication information and also may carry traffic data. The service data is loaded through a logical channel, and since the logical channel for loading the service data is related to the service parameter corresponding to the service data, the base station can obtain the service parameter of the service data according to the logical channel loaded by the service data after receiving the first PUSCH. Therefore, when the base station carries out subsequent resource scheduling, the base station can schedule corresponding resources according to the service parameters of the service data.

Therefore, when the logical channel is configured, two or more logical channels can be configured, so that service data of different service parameters of the user equipment can be supported.

For example, service data a and service data B are carried through different logical channels, where the delay requirement of service data a is high, and the delay requirement of service data B is relatively low. After acquiring the service data a and the service data B, the base station can acquire the priority of the service data a and the priority of the service data B according to the logical channel carrying the service data a and the service data B. In this way, when the base station performs resource scheduling, the service data a is preferentially transmitted through the resource matched with the service data a according to the priority of the service data a and the service data B, so that the reliability of data transmission can be improved, and the flexibility of resource scheduling can be improved.

The configuration of the logical channel may be a default value preset by the system, or may be configured through signaling. When the configuration is carried out through the signaling, the flexible configuration can be carried out according to the state of the user equipment.

When the user equipment is in an RRC connection state, the configuration can be realized through RRC dedicated signaling; when the user equipment is in an RRC inactive state, the user equipment can be configured through signaling when the user equipment is released from the RRC connected state and enters the RRC inactive state; the configuration may be broadcasted by system information when the user equipment is in the RRC idle state. The signaling configuration is needed when the user equipment sends the data packet in the RRC inactive state, and the signaling in the process of switching from the RRC connected state to the RRC inactive state is used for configuration, so that the signaling overhead can be reduced. And the data packet is sent based on the first step in the two-step random access, so that the signaling overhead can be reduced, and the access time delay can be reduced.

In the embodiment, a plurality of logical channels are configured according to the service parameters corresponding to the service data, so that the transmission of the service data of different service parameters by the user equipment can be supported, and the base station can acquire the service parameters of the service data based on the logical channel bearing the service data, thereby performing resource scheduling more flexibly.

Referring to fig. 6, fig. 6 is a flowchart illustrating a two-step random access method provided by an embodiment of the present invention, where the method is used for a network side device. As shown in fig. 6, the method comprises the steps of:

step 601, in the random access process, receiving a first PUSCH, where the first PUSCH carries resource indication information, and the resource indication information is used to indicate a target transmission resource for which channel quality in a synchronization period meets a preset requirement.

The embodiment of this embodiment corresponding to fig. 2 is a method implemented from different device side angles, and therefore, for specific explanation in this embodiment, reference may be made to the related description in the embodiment corresponding to fig. 2, and details are not repeated here.

Because the first PUSCH carries the resource indication information, the base station can schedule the target transmission resource with better channel quality in the subsequent data transmission according to the resource indication information, thereby more accurately performing data scheduling and improving the efficiency of data transmission. And the base station can more pertinently schedule the transmission of the uplink data of the user equipment according to the actual data transmission requirement, thereby improving the flexibility of resource scheduling.

Optionally, the target transmission resource is at least one of the following transmission resources: a transmission resource corresponding to the first SSB, a transmission resource corresponding to the second SSB, a transmission resource corresponding to the first CSI-RS and a transmission resource corresponding to the second CSI-RS;

the first SSB is an SSB of which the RSRP measurement value is greater than that of the uplink pilot signal; the second SSB is the SSB with the maximum RSRP measurement value, and the first CSI-RS is the CSI-RS with the RSRP measurement value larger than that of the uplink pilot signal; the second CSI-RS is the CSI-RS with the largest RSRP measurement value.

Based on the resources contained in the target transmission resources, when the base station performs resource scheduling, the base station can schedule the transmission resources with better channel quality to perform data transmission, and can improve the efficiency of data transmission. And the base station can select corresponding transmission resources for scheduling according to actual data transmission requirements, so that the scheduling mode of the resources can be further optimized, and the efficiency of data transmission can be improved.

Further, the PUSCH also carries difference information for indicating a difference between the RSRP measurement value of the target transmission resource and the RSRP measurement value of the uplink pilot signal. Based on the difference information, the base station can select corresponding transmission resources according to actual conditions, so that resource waste can be reduced, and the efficiency of data transmission can be improved.

Wherein the service parameter includes at least one of the following parameters: a service priority parameter, a service type parameter, and a service QOS parameter.

Referring to fig. 7, fig. 7 is a flowchart illustrating another two-step random access method for a user equipment according to an embodiment of the present invention. As shown in fig. 7, the method comprises the steps of:

step 701, in the random access process, a first PUSCH is sent, where the first PUSCH also carries service data, and a logical channel carrying the service data is related to a service parameter corresponding to the service data.

In this embodiment, in the two-step random access process, when sending a pilot message to the base station, the user equipment sends a first PUSCH to the base station, where the first PUSCH carries service data.

The service data is loaded through a logical channel, and since the logical channel for loading the service data is related to the service parameter corresponding to the service data, the base station can obtain the service parameter of the service data according to the logical channel loaded by the service data after receiving the first PUSCH. Therefore, when the base station carries out subsequent resource scheduling, the base station can schedule corresponding resources according to the service parameters of the service data.

To facilitate a further understanding of the present embodiments, reference is made to the following description taken in conjunction with the accompanying drawings.

Under the condition that the user equipment is in an RRC inactive state, when the user equipment is released from an RRC connected state and enters the RRC inactive state, the base station informs the user equipment to reserve a C-RNTI through an RRC signaling, and configures two logical channels, namely an LCH _ ID0 and an LCH _ ID1 for the user equipment. The specific data receiving and sending process is as follows:

based on the configuration information, the user equipment sequentially sends MsgA including preamble (random access preamble) and PUSCH to the base station, wherein the content carried in the PUSCH includes C-RNTI, a logical channel LCH _ ID0 packet header and corresponding data.

According to the embodiment of the invention, various logic channels are configured according to the service parameters corresponding to the service data, the transmission of the service data of different service parameters by the user equipment can be supported, and the base station can acquire the service parameters of the service data based on the logic channel bearing the service data, so that the resource scheduling can be more flexibly carried out in the subsequent resource transmission.

Referring to fig. 8, fig. 8 is a schematic flowchart of another two-step random access method provided in an embodiment of the present invention, and is used on a network device side. As shown in fig. 8, the method comprises the steps of:

step 801, in a random access process, receiving a first PUSCH, where the first PUSCH also carries service data, and a logical channel carrying the service data is related to a service parameter corresponding to the service data.

The embodiment of this embodiment corresponding to fig. 7 is a two-step random access method implemented from different device side angles, and therefore, for a specific implementation process of this embodiment, reference may be made to the relevant description in the embodiment corresponding to fig. 7, and details are not described here again.

According to the embodiment of the invention, various logic channels are configured according to the service parameters corresponding to the service data, the transmission of the service data of different service parameters by the user equipment can be supported, and the base station can acquire the service parameters of the service data based on the logic channels bearing the service data, so that the resource scheduling can be more flexibly carried out.

Referring to fig. 9, an embodiment of the present invention provides a user equipment. As shown in fig. 9, the user equipment 900 comprises a first transceiver 901 and a first processor 902.

When the user equipment 900 is the user equipment in the corresponding embodiment of fig. 2, the first transceiver 901 is configured to: in the random access process, a first Physical Uplink Shared Channel (PUSCH) is sent, wherein the first Physical Uplink Shared Channel (PUSCH) carries resource indication information, and the resource indication information is used for indicating target transmission resources with channel quality meeting preset requirements in a synchronization period.

Optionally, the first processor 902 is configured to determine whether the resource indication information needs to be sent;

the first transceiver 901 is further configured to enter the step of sending the first physical uplink shared channel PUSCH if the resource indication information needs to be sent, and otherwise send a second physical uplink shared channel PUSCH which does not carry the resource indication information.

Optionally, the first processor 902 determines whether the resource indication information needs to be sent according to at least one of the following policies:

The user equipment 900 may also be the user equipment in the corresponding embodiment of fig. 7, and the user equipment corresponding to fig. 7 includes a third transceiver. When the user equipment 900 is the user equipment corresponding to fig. 7, then the third transceiver may be the first transceiver 901 in the user equipment 900. The first transceiver 901 is further configured to:

It should be noted that the user equipment 900 in the embodiment of the present invention may be the user equipment in any implementation manner in the embodiment of the present invention corresponding to fig. 2 or fig. 7, and any implementation manner in the embodiment of the present invention corresponding to fig. 2 or fig. 7 may be implemented by the user equipment 900 in this embodiment to achieve the same beneficial effects, and details are not repeated here.

Referring to fig. 10, an embodiment of the present invention provides a network side device, and as shown in fig. 10, the network side device 1000 includes a second transceiver 1001.

When the network-side device 1000 is the network-side device in the embodiment corresponding to fig. 6, the second transceiver 1001 is configured to:

The network side device 1000 may also be a network side device in the embodiment corresponding to fig. 8, where the network side device corresponding to fig. 8 includes a fourth transceiver. When the network-side device 1000 is the network-side device corresponding to fig. 8, the fourth transceiver may be the second transceiver 1001 in the network-side device 1000. The second transceiver 1001 is also used to:

It should be noted that, in the embodiment of the present invention, the network-side device 1000 may be a network-side device in any implementation manner in the embodiment of the present invention corresponding to fig. 6 or fig. 8, and any implementation manner in the embodiment of the present invention corresponding to fig. 6 or fig. 8 may be implemented by the network-side device 1000 in this embodiment, and the same beneficial effects are achieved, and details are not described here again.

Referring to fig. 11, another user equipment according to an embodiment of the present invention is shown in fig. 11, where the user equipment 1100 includes a first memory 1101, a first processor 1102, and a computer program stored in the first memory 1101 and executable on the first processor 1102; the first processor 1102, when executing the program, implements:

In FIG. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the first processor 1102 and various circuits of the memory represented by the first memory 1101 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The first bus interface provides an interface. The first processor 1102 is responsible for managing a bus architecture and general processing, and the first memory 1101 may store data used by the first processor 1102 in performing operations.

Optionally, before the first processor 1102 performs sending the first physical uplink shared channel PUSCH, the program further implements:

judging whether the resource indication information needs to be sent or not;

Optionally, the first processor 1102 determines whether the resource indication information needs to be sent according to at least one of the following policies:

When the user equipment 1100 is the user equipment in the corresponding embodiment of fig. 7, the first processor 1102 further implements, when executing the program:

It should be noted that the user equipment in this embodiment may be the user equipment in the embodiment corresponding to fig. 2 or fig. 7, and any implementation of the user equipment in the embodiment corresponding to fig. 2 or fig. 7 may be implemented by the user equipment in this embodiment to achieve the same beneficial effects, which is not described herein again.

Referring to fig. 12, another network-side device according to an embodiment of the present invention is shown in fig. 12, where the network-side device 1200 includes a second memory 1201, a second processor 1202, and a computer program stored in the second memory 1201 and executable on the second processor 1202; the second processor 1202 implements, when executing the program:

In fig. 12, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the second processor 1202 and various circuits of the memory represented by the second memory 1201 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The second bus interface provides an interface. The second processor 1202 is responsible for managing the bus architecture and general processing, and the second memory 1201 may store data used by the second processor 1202 in performing operations.

When the network-side device 1200 is the network-side device in the corresponding embodiment of fig. 8, the second processor 1202 further implements, when executing the program, that:

It should be noted that, in this embodiment, the network-side device may be the network-side device in the embodiment corresponding to fig. 6 or fig. 8, and any implementation of the network-side device in the embodiment corresponding to fig. 6 or fig. 8 may be implemented by the network-side device in this embodiment, and the same beneficial effects are achieved, and details are not described here again.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the two-step random access method embodiment of the user equipment side or the network side device, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A two-step random access method for a user equipment, the two-step random access method comprising:

2. The two-step random access method of claim 1, wherein:

the target transmission resource is at least one of the following transmission resources: a transmission resource corresponding to the first synchronization signal block SSB, a transmission resource corresponding to the second synchronization signal block SSB, a transmission resource corresponding to the first channel state information reference signal CSI-RS and a transmission resource corresponding to the second channel state information reference signal CSI-RS;

3. The two-step random access method according to claim 2, wherein the Physical Uplink Shared Channel (PUSCH) further carries difference information indicating a difference between a Reference Signal Received Power (RSRP) measurement value of the target transmission resource and a Reference Signal Received Power (RSRP) measurement value of the uplink pilot signal.

4. The two-step random access method according to any of claims 1-3, further comprising, before transmitting the first physical uplink shared channel, PUSCH:

judging whether the resource indication information needs to be sent or not;

5. The two-step random access method according to claim 4, wherein whether the resource indication information needs to be transmitted is determined according to at least one of the following policies:

6. The two-step random access method according to claim 1, wherein the first physical uplink shared channel PUSCH also carries service data, and a logical channel carrying the service data is related to a service parameter corresponding to the service data.

7. The two-step random access method according to claim 6, characterized in that said traffic parameters comprise at least one of the following parameters: a service priority parameter, a service type parameter, and a service quality of service (QOS) parameter.

8. A two-step random access method for a network side device, the two-step random access method comprising:

9. The two-step random access method according to claim 8, characterized in that:

10. The two-step random access method according to claim 9, wherein the physical uplink shared channel PUSCH further carries difference information indicating a difference between a reference signal received power RSRP measurement value of the target transmission resource and a reference signal received power RSRP measurement value of the uplink pilot signal.

11. The two-step random access method according to claim 8, wherein the first physical uplink shared channel PUSCH also carries service data, and a logical channel carrying the service data is related to a service parameter corresponding to the service data.

12. The two-step random access method according to claim 11, characterized in that said traffic parameters comprise at least one of the following parameters: a service priority parameter, a service type parameter, and a service quality of service (QOS) parameter.

13. A two-step random access method for a user equipment, the two-step random access method comprising:

14. The two-step random access method according to claim 13, characterized in that said traffic parameters comprise at least one of the following parameters: a service priority parameter, a service type parameter, and a service quality of service (QOS) parameter.

15. A two-step random access method for a network side device, the two-step random access method comprising:

16. The two-step random access method according to claim 15, characterized in that said traffic parameters comprise at least one of the following parameters: a service priority parameter, a service type parameter, and a service quality of service (QOS) parameter.

17. A user equipment, characterized in that the user equipment comprises a first transceiver for:

18. A network-side device, wherein the network-side device comprises a second transceiver configured to:

19. A user equipment, characterized in that the user equipment comprises a third transceiver for:

20. A network-side device, wherein the network-side device comprises a fourth transceiver configured to:

21. A user device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the steps of the two-step random access method according to any of claims 1 to 7 or the steps of the two-step random access method according to any of claims 13 to 14 when executing the computer program.

22. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the steps of the two-step random access method according to any of claims 8 to 12 or the steps of the two-step random access method according to any of claims 15 to 16 when executing the computer program.

23. A computer readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the two-step random access method according to any one of claims 1 to 7, or the steps of the two-step random access method according to any one of claims 8 to 12, or the steps of the two-step random access method according to any one of claims 13 to 14, or the steps of the two-step random access method according to any one of claims 15 to 16.