CN117692036A

CN117692036A - Beam indication method, device and readable storage medium

Info

Publication number: CN117692036A
Application number: CN202211030934.0A
Authority: CN
Inventors: 沈姝伶; 邢艳萍; 费永强
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2024-03-12
Also published as: WO2024041377A1

Abstract

The application provides a beam indication method, a beam indication device and a readable storage medium, wherein the beam indication method comprises the following steps: receiving target information sent by network side equipment; the target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR; determining an optimal beam according to the target information; and sending the message 3 physical uplink shared channel Msg3PUSCH according to the optimal beam, and/or sending automatic request retransmission acknowledgement HARQ-ACK feedback aiming at the message 4 physical downlink shared channel Msg4 PDSCH. And improving the transmission performance of the Msg3PUSCH and/or the HARQ-ACK automatic request retransmission feedback aiming at the Msg4PDSCH message when the PRACH is transmitted by adopting multiple beams.

Description

Beam indication method, device and readable storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a beam indication method, a beam indication device, and a readable storage medium.

Background

At present, a terminal only transmits one physical random access channel (Physical Random Access Channel, abbreviated as PRACH) in a random access attempt process, and if receiving a random access response (Random Access Response, abbreviated as RAR) fails, the terminal transmits the PRACH next time. In the whole random process, the terminal always adopts a beam (namely beam) corresponding to a synchronous signal block (English: synchronization Signal Block, abbreviated: SSB) meeting an access condition to send PRACH, sends a Message (English: message, abbreviated: msg) 3 physical uplink shared channel (English: physical Uplink Shared Channel, abbreviated: PUSCH) and automatically requests retransmission (English: hybrid Automatic Repeat reQuest, abbreviated: HARQ) Acknowledgement (English: ACK) namely HARQ-ACK feedback for an Msg4 physical downlink shared channel (English: physical Downink Shared Channel, abbreviated: PDSCH). In the coverage enhancement technology study of Rel-18, multi-physical random access channel multi PRACH transmission in a random access procedure is supported to improve transmission performance of PRACH. Wherein the multi PRACH may be transmitted through a differential beam.

However, in the prior art, there is only one beam for uplink transmission in the random access channel (Random Access Channel, abbreviated as RACH) stage, and the beam is used for terminal transmission in the RACH process. When Rel-18 supports transmission of multi PRACH with differential beam, the terminal transmits multiple candidate beams, but the base station does not inform the terminal which candidate beam to use for subsequent Msg3PUSCH and/or HARQ-ACK automatic request retransmission feedback for Msg4 PDSCH messages.

Therefore, in the prior art, when Rel-18 supports multi PRACH transmission by using differential beam, and a terminal transmits multiple candidate beams, it is possible to select a beam corresponding to SSB that satisfies an access condition or randomly select one beam for subsequent uplink transmission, but due to uplink and downlink channel diversity, the beam is not necessarily the optimal beam for uplink transmission. The terminal may not have the transmission that makes the Msg3PUSCH and/or HARQ-ACK automatic request retransmission feedback for Msg4 PDSCH messages for optimal performance.

Disclosure of Invention

The application provides a beam indication method, a beam indication device and a readable storage medium, which solve the technical problem that in the prior art, when a Rel-18 supports the adoption of differential beam transmission multi PRACH and a terminal transmits a plurality of candidate beams, the optimal performance transmission cannot be realized by using Msg3PUSCH and/or HARQ-ACK automatic request retransmission feedback aiming at Msg4 PDSCH information.

In a first aspect, the present application provides a beam indication method, applied to a terminal, where the method includes:

receiving target information sent by network side equipment; the target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or,

the target information comprises beam indication information carried by a newly added field in the random response access RAR;

determining an optimal beam according to the target information;

and sending the message 3 physical uplink shared channel Msg3 PUSCH according to the optimal beam, and/or sending automatic request retransmission acknowledgement HARQ-ACK feedback aiming at the message 4 physical downlink shared channel Msg4 PDSCH.

Optionally, when the target information is beam indication information carried by a first reserved bit in the RAR, the determining an optimal beam according to the target information includes:

determining the beam index of the optimal beam according to the corresponding relation between the state value of the first reserved bit and the candidate beam index;

the first reserved bit is a reserved bit in the RAR and/or a reserved bit contained in an RAR uplink grant UL grant.

Optionally, when the target information is beam indication information carried by a newly added field in the RAR, the determining an optimal beam according to the target information includes:

Determining a beam index of the optimal beam in a Bitmap mode according to the beam indication information carried by the newly added field; or,

and determining the beam index of the optimal beam in an index mode according to the beam indication information carried by the newly added field.

In the embodiment of the application, the optimal beam is determined based on the beam indication information carried by the first reserved bit in the RAR or the beam indication information carried by the newly added field in the RAR; specifically, the beam index of the optimal beam may be determined according to the corresponding relationship between the state value of the first reserved bit and the candidate beam index, or the beam indication information carried by the newly added field may be determined by a Bitmap method or an index method, and since one beam index corresponds to one beam, it may be determined which beam is the optimal beam through the determined beam index of the optimal beam.

Optionally, the newly added field includes N bits, N is an integer greater than 1, the N is predefined by a protocol, or the N is configured by higher layer signaling;

wherein, N is a fixed value; or,

and N is a non-fixed value.

Optionally, the determining, according to the beam indication information carried by the newly added field, the beam index of the optimal beam by means of a Bitmap includes:

If the state value of any bit in the N bits included in the newly added field is a first preset value, the beam index corresponding to the bit is the beam index of the optimal beam;

the number of bits with the state value being the first preset value is greater than 1 or equal to 1, and the beam index corresponding to one bit corresponds to an optimal beam index.

Optionally, when the number of bits with the status value being the first preset value is greater than 1, the sending the physical uplink shared channel Msg3 PUSCH of the message 3 according to the optimal beam and/or sending the automatic request retransmission acknowledgement HARQ-ACK feedback for the physical downlink shared channel Msg4 PDSCH of the message 4 includes:

selecting a target optimal beam from a plurality of optimal beams, wherein the target optimal beam is any one of the optimal beams;

and sending a message 3 physical uplink shared channel Msg3 PUSCH according to the target optimal beam, and/or sending automatic request retransmission acknowledgement HARQ-ACK feedback aiming at a message 4 physical downlink shared channel Msg4 PDSCH.

In this embodiment of the present application, the beam index of the optimal beam determined by the Bitmap may be one or more, and then any beam is selected from the beams corresponding to the determined beam index as the optimal beam for transmitting the Msg3 PUSCH of the physical uplink shared channel 3 and/or transmitting the HARQ-ACK feedback for automatic retransmission request of the Msg4 PDSCH of the physical downlink shared channel 4 of the message 4.

Optionally, the determining, by an index manner, the beam index of the optimal beam according to the beam indication information carried by the newly added field includes:

determining the beam index of the optimal beam according to the corresponding relation between the state value of the newly added field and the candidate beam index; wherein the N bits included in the newly added field form 2 ^N And a state value, wherein one state value corresponds to one candidate beam index.

In this embodiment of the present application, the beam index of the optimal beam is determined by an index method, which may be based on 2 consisting of N bits included in the newly added field ^N And determining which bit corresponding state value is the state value corresponding to the optimal beam by utilizing the corresponding relation between the state value of the newly added field and the candidate beam index, further determining the beam index of the optimal beam, and then confirming that the optimal beam corresponding to the beam index is used for transmitting the physical uplink shared channel Msg3 PUSCH of the message 3 and/or transmitting the optimal beam for automatically requesting retransmission for confirming HARQ-ACK feedback of the physical downlink shared channel Msg4 PDSCH of the message 4.

Optionally, the beam index of the optimal beam is a synchronization signal block SSB index for physical random access channel PRACH transmission, where the optimal beam is a beam used for transmitting a corresponding PRACH on a random access channel transmission opportunity RO associated with the SSB index; or,

The beam index of the optimal beam is an RO index for PRACH transmission; the optimal beam is a beam adopted by sending a corresponding PRACH on a target RO corresponding to the RO index.

In this embodiment of the present application, the beam index may be an SSB index for multi-PRACH transmission, or the beam index may be an RO index for multi-PRACH transmission, and the terminal may use the optimal beam to perform subsequent message 3 physical uplink shared channel Msg3 PUSCH and/or send automatic request retransmission acknowledgement HARQ-ACK feedback for message 4 physical downlink shared channel Msg4 PDSCH, so as to improve performance of terminal transmission.

In a second aspect, the present application provides a beam indication method, applied to a network side device, where the method includes:

determining target information; the target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR; the beam indication information is used for indicating the optimal beam of the terminal;

and sending the target information to the terminal.

Optionally, when the target information is beam indication information carried by a first reserved bit in the RAR, the determining the target information includes:

Generating beam indication information according to the corresponding relation between the state value of the first reserved bit and the candidate beam index; wherein, the first reserved bit is reserved bit in RAR and/or reserved bit contained in RAR uplink grant UL grant;

and carrying the beam indication information through the first reserved bit, and taking the message of the beam indication information carried by the first reserved bit as the target information.

Optionally, when the target information is beam indication information carried by a newly added field in the RAR, the determining the target information includes:

indicating the beam index of the optimal beam in a Bitmap mode; or, indicating the beam index of the optimal beam in an index way;

generating the beam indication information according to the beam index of the optimal beam;

and carrying the beam indication information by the newly added field, and taking the message of the beam indication information carried by the newly added field as the target information.

In the embodiment of the application, the beam indication information is determined based on the first reserved bit in the RAR or the newly added field in the RAR, so as to indicate the optimal beam adopted by the terminal; specifically, the beam indication information may be generated according to the corresponding relation between the state value of the first reserved bit and the candidate beam index, or the beam index of the optimal beam is indicated in a Bitmap mode or an index mode, and since one beam index corresponds to one beam, the beam indication information is generated, the beam indication information is carried by the newly added field, the target information carrying the beam indication information is sent to the terminal, the terminal is notified to use the optimal beam to perform subsequent message 3 physical uplink shared channel Msg3 PUSCH, and/or to send automatic request retransmission acknowledgement HARQ-ACK feedback for message 4 physical downlink shared channel Msg4 PDSCH, so that the performance of terminal transmission is improved.

wherein, N is a fixed value; or,

and N is a non-fixed value.

Optionally, the indicating the beam index of the optimal beam by means of a Bitmap includes:

indicating that the state value is a first preset value through the state value of any bit in N bits included in the newly added field, wherein the beam index corresponding to the bit is the beam index of the optimal beam;

Optionally, when the number of bits with the state value being the first preset value is greater than 1, the beam indication information is used for indicating the terminal to select a target optimal beam from a plurality of optimal beams; wherein the target optimal beam is any one of a plurality of optimal beams.

In this embodiment of the present application, the beam index of the indicated optimal beam may be one or more by adding the status value of any bit in the N bits included in the field, and then instruct the terminal to select any beam from the optimal beams as the optimal beam for sending the Msg3 PUSCH of the physical uplink shared channel of the message 3, and/or send the HARQ-ACK feedback for automatic request retransmission acknowledgement of the Msg4 PDSCH of the physical downlink shared channel of the message 4.

Optionally, the indicating, by way of index, the beam index of the optimal beam includes:

indicating the beam index of the optimal beam through the corresponding relation between the state value of the newly added field and the candidate beam index; wherein the N bits included in the newly added field form 2 ^N And a state value, wherein one state value corresponds to one candidate beam index.

In this embodiment, the beam index of the optimal beam is indicated by indexing, which may be based on 2 consisting of N bits included in the newly added field ^N And the state value of the most preferred beam is indicated by the corresponding relation between the state value of the newly added field and the candidate beam index, so that the beam index of the most preferred beam is determined, and then the terminal is informed to send the physical uplink shared channel Msg3 PUSCH of the message 3 and/or send the most preferred beam for automatically requesting retransmission confirmation HARQ-ACK feedback aiming at the physical downlink shared channel Msg4 PDSCH of the message 4 by using the most preferred beam corresponding to the beam index.

In this embodiment of the present application, the beam index may be an SSB index for multi-PRACH transmission, or the beam index may be an RO index for multi-PRACH transmission, and when the network side device receives the multi-PRACH transmitted by the terminal using the differential beam, the base station may be enabled to notify the terminal of the optimal beam after judging the optimal beam, so that the terminal uses the optimal beam to perform subsequent message 3 physical uplink shared channel Msg3 PUSCH, and/or send automatic request retransmission acknowledgement HARQ-ACK feedback for message 4 physical downlink shared channel Msg4 PDSCH, thereby improving performance of subsequent terminal transmission.

In a third aspect, the present application provides a beam pointing apparatus, where the apparatus is applied to a terminal, the apparatus includes a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

determining an optimal beam according to the target information;

In a fourth aspect, the present application provides a beam indicating apparatus, where the apparatus is applied to a network side device, and the apparatus includes: memory, transceiver, processor:

And sending the target information to the terminal.

In a fifth aspect, the present application provides a beam indicating device, where the device is applied to a terminal, and the device includes:

the receiving unit is used for receiving the target information sent by the network side equipment; the target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR;

the first processing unit is used for determining an optimal wave beam according to the target information;

and the second processing unit is used for sending the physical uplink shared channel Msg3 PUSCH of the message 3 and/or sending the automatic request retransmission acknowledgement HARQ-ACK feedback aiming at the physical downlink shared channel Msg4 PDSCH of the message 4 according to the optimal beam.

In a sixth aspect, the present application provides a beam indicating apparatus, where the apparatus is applied to a network side device, and the apparatus includes:

a processing unit for determining target information; the target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR; the beam indication information is used for indicating the optimal beam of the terminal;

And the sending unit is used for sending the target information to the terminal.

In a seventh aspect, the present application provides a processor-readable storage medium storing a computer program for causing the processor to perform the method of any one of the first or second aspects.

The application provides a beam indication method, a device and a readable storage medium, wherein an optimal beam is determined based on beam indication information carried by a first reserved bit in an RAR (random access request) or beam indication information carried by a newly added field in the RAR, and a message 3 physical uplink shared channel Msg3PUSCH is sent according to the optimal beam, and/or automatic request retransmission acknowledgement HARQ-ACK feedback aiming at a message 4 physical downlink shared channel Msg4 PDSCH is sent, so that when a Rel-18 supports the transmission of multi PRACH by using differential beam, and a terminal transmits a plurality of candidate beams, network side equipment can inform the optimal beam to the terminal, so that the terminal can use the optimal beam to carry out subsequent message 3 physical uplink shared channel Msg3PUSCH, and/or send automatic request retransmission acknowledgement HARQ-ACK feedback aiming at the message 4 physical downlink shared channel Msg4 PDSCH, thereby improving the transmission performance of the subsequent terminal.

It should be appreciated that what is described in the foregoing summary section is not intended to limit key or critical features of embodiments of the present application nor is it intended to be used to limit the scope of the present application. Other features of the present application will become apparent from the description that follows.

Drawings

For a clearer description of the technical solutions of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the present application, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a MAC RAR provided in an embodiment of the present application;

fig. 2 is an interaction schematic diagram of a beam indication method provided in an embodiment of the present application;

fig. 3 is a flow chart of a beam indication method provided in an embodiment of the present application;

fig. 4 is a flowchart of a beam pointing method according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a beam pointing apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a beam pointing apparatus according to another embodiment of the present application;

Fig. 7 is a schematic structural diagram of a beam pointing apparatus according to another embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a beam pointing apparatus according to another embodiment of the present application.

Detailed Description

The term "and/or" in this application describes an association relationship of an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

For a clear understanding of the technical solutions of the present application, the prior art solutions will be described in detail first. In the prior art, a terminal only transmits one PRACH in a random access attempt process, and if the reception of the RAR fails, the terminal transmits the PRACH next time. In the whole random process, the terminal always adopts the beam corresponding to the SSB meeting the access condition to send PRACH, msg3 PUSCH and HARQ-ACK feedback aiming at Msg4 PDSCH. In the coverage enhancement technology study of Rel-18, multi PRACH transmission in a random access procedure is supported to improve the transmission performance of PRACH. Wherein the multi PRACH may be transmitted through a differential beam.

Two possible schemes exist for differential beam transmission at present, one scheme is to adopt ROs associated with different SSBs to perform PRACH transmission, and network side equipment (for example, a base station) receives beams corresponding to different SSBs; the other is that the UE carries out PRACH transmission according to the RO associated with the SSB selected by the reference signal receiving power (English: reference Signal Received Power, RSRP for short), but each time the beam angle corresponding to the SSB is finely tuned, the base station always receives the beam corresponding to the initial SSB, the scheme is that the up-down beam direction is basically aligned in consideration, but the deviation is slightly caused, and the optimal direction is hoped to be found by deflecting different angles based on the initial beam direction.

As shown in the schematic structure of the MAC RAR shown in fig. 1, R in fig. 1 represents a reserved bit (i.e., reserved bit or reserved bit), the UL grant in the MAC RAR occupies 27 bits, and the protocol explicitly specifies that the channel state information (english: channel State Information, abbreviated: CSI) request field is in reserved state (i.e., reserved state), so there is also 1 reserved bit in the UL grant.

As shown in fig. 1, the terms involved in the MAC RAR structure are explained: timing advance command (English: timing Advance Command, abbreviated: TAC); uplink (English: UP LINK, abbreviated as UL) grant (i.e., grant), i.e., UL grant; temporary Cell radio network Temporary flag (English: temporary Cell-Radio Network Temporary Identity, abbreviated as TC-RNTI); oct1 represents octet 1, oct2 represents octet 2, …, oct7 represents octet 7.

Therefore, in the prior art, there is only one beam for uplink transmission in the random access channel (Random Access Channel, abbreviated as RACH) stage, and the beam is adopted for terminal transmission information in the RACH process. When Rel-18 supports transmission of multi PRACH using differential beam, the terminal transmits multiple candidate beams, and the base station does not inform the terminal which candidate beam to use for subsequent Msg3PUSCH and/or HARQ-ACK automatic request retransmission feedback for Msg4 PDSCH messages. The terminal may select a beam corresponding to the SSB that satisfies the access condition or randomly select one beam for subsequent uplink transmission.

The inventor further studies found that when Rel-18 supports transmitting multi PRACH using differential beam, the terminal transmits multiple candidate beams, the beam autonomously selected by the terminal is not necessarily the optimal beam for uplink transmission due to uplink and downlink channel interoperability. In order to improve the transmission performance of the subsequent terminal, the base station may send the beam indication information carried by the first reserved bit in the RAR or the target information of the beam indication information carried by the new field in the RAR to the terminal, and the terminal determines an optimal beam based on the target information, and further uses the optimal beam to perform the physical uplink shared channel Msg3PUSCH of the subsequent message 3 and/or send automatic request retransmission acknowledgement HARQ-ACK feedback for the physical downlink shared channel Msg4 PDSCH of the message 4, thereby improving the transmission performance of the subsequent terminal.

Therefore, based on the creative research of the inventor, the beam indication method provided by the application is provided, in the application, the terminal receives the target information sent by the network side equipment, and determines the optimal beam through the beam indication information carried by the first reserved bit in the RAR or the beam indication information carried by the newly added field in the RAR included in the target information; specifically, the beam index of the optimal beam may be determined according to the corresponding relation between the state value of the first reserved bit and the candidate beam index, or the beam indication information carried by the newly added field may be determined in a Bitmap mode or an index mode, and since one beam index corresponds to one beam, the determined beam index of the optimal beam may be used to confirm which beam is the optimal beam, and further, the optimal beam may be used to perform automatic request retransmission acknowledgement HARQ-ACK feedback for the physical uplink shared channel Msg3 PUSCH of the subsequent message 3 and/or the physical downlink shared channel Msg4PDSCH of the message 4, so as to improve the performance of subsequent terminal transmission, and solve the technical problem that when Rel-18 supports transmission of multiple PRACH by using differential beam, when the terminal transmits beams with multiple candidates, the transmission of optimal performance cannot be performed by the PUSCH of Msg3 and/or the HARQ-ACK automatic request retransmission feedback for the Msg4PDSCH of the message.

Referring to fig. 2, fig. 2 is an interaction schematic diagram of a beam indication method provided in an embodiment of the present application, where in the embodiment of the present application, as shown in fig. 2, when a network side device receives a multi PRACH sent by a terminal using a differential beam, an optimal beam is determined, beam indication information is generated, and then the beam indication information is carried by a first reserved bit in an RAR or by a new field in the RAR, and sent to the terminal in a target information manner, so as to notify the terminal of the optimal beam used by the terminal; the terminal receives target information sent by the network side equipment, determines an optimal beam according to a first reserved bit in the RAR or beam indication information carried by a newly added field in the RAR, and further adopts the optimal beam to carry out subsequent message 3 physical uplink shared channel Msg3 PUSCH and/or send automatic request retransmission acknowledgement HARQ-ACK feedback aiming at message 4 physical downlink shared channel Msg4PDSCH, thereby improving the transmission performance of the subsequent terminal.

Embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 3 is a flow chart of a beam indication method provided in the embodiment of the present application, and as shown in fig. 3, an execution body of the beam indication method provided in the embodiment is a terminal, and the terminal may use a multi PRACH sent by a differential beam. The beam indication method provided by the embodiment of the application comprises the following steps:

Step 301, receiving target information sent by a network side device.

The target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR.

The first reserved bit in the RAR may be a reserved bit in R and/or a reserved bit in UL grant shown in fig. 1. The reserved bit may be reserved bit in the MAC RAR and/or reserved bit in the UL grant; the new bit can be in a Bitmap mode or an index indication mode.

The beam indication information generated by the network side equipment indicates which beam is the optimal beam through the first reserved bit or through a new field in the RAR, and the terminal sends the message 3 physical uplink shared channel Msg3 PUSCH and/or sends the automatic request retransmission acknowledgement HARQ-ACK feedback aiming at the message 4 physical downlink shared channel Msg4 PDSCH by adopting the indicated optimal beam.

And 302, determining an optimal beam according to the target information.

Step 303, sending the physical uplink shared channel Msg3 PUSCH of the message 3 and/or sending the automatic request retransmission acknowledgement HARQ-ACK feedback for the physical downlink shared channel Msg4 PDSCH of the message 4 according to the optimal beam.

According to reserved bits or newly added bits in the MAC RAR, determining the optimal beam in a plurality of beams used for multi PRACH transmission, wherein the optimal beam is used as the beam adopted for uplink Msg3 PUSCH and/or HARQ-ACK feedback transmission of Msg4 PDSCH, so that a terminal can know which beam to use for transmission, namely, the terminal sends a message 3 physical uplink shared channel Msg3 PUSCH according to the determined optimal beam, and/or sends automatic request retransmission acknowledgement HARQ-ACK feedback of a message 4 physical downlink shared channel Msg4 PDSCH, thereby improving transmission performance.

Optionally, when the target information is beam indication information carried by a first reserved bit in the RAR, the determining an optimal beam according to the target information may be implemented by:

and determining the beam index of the optimal beam according to the corresponding relation between the state value of the first reserved bit and the candidate beam index.

The first reserved bit is a reserved bit in the RAR and/or a reserved bit contained in an RAR uplink grant UL grant. An optimal beam is determined based on the beam index of the optimal beam.

Therefore, the first reserved bit may be one reserved bit or two reserved bits, and the beam index of the optimal beam is determined according to the corresponding relationship between the state value of the first reserved bit and the candidate beam index through the following two scene description.

When the first reserved bit in scenario 1 is one reserved bit (i.e., 1bit or 1 bit), the first reserved bit may be a reserved bit in the RAR, or may be a reserved bit contained in the UL grant.

Specifically, if the beam indication information in the target information is carried by 1 reserved bit in the RAR, the beam index of the optimal beam may be determined based on the state value of the reserved bit through the relationship between the state value and the candidate beam index. Further, if the reserved bit is a reserved bit in the UL grant, the reserved bit may be a CSI request field.

Wherein, when the optimal beam is determined by 1 reserved bit, there are 2 candidate beams for multi PRACH transmission. The two state values of the reserved bit correspond to 2 beam indexes, respectively.

In an exemplary embodiment, a beam indication method is described in detail below by taking an example that a MAC RAR carries a 1-bit indication field for indicating an optimal beam.

The 1bit may be reserved bits in the MAC RAR, or may be a CSI request field in the UL grant, which is not specifically limited herein. A 1bit may correspond to two state values of "0" and "1", each state value corresponding to one candidate beam, and thus two candidate beams may be determined. For example, when the 1-bit state value is "0", the first candidate beam is corresponding to the first candidate beam, and the terminal uses the first candidate beam to send uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH at this time; or when the 1-bit state value is '1', the second candidate beam is corresponding to be used as the optimal beam, and at the moment, the terminal adopts the second candidate beam to send uplink Msg3 PUSCH and/or HARQ-ACK feedback aiming at Msg4 PDSCH.

In particular, the beam index of the optimal beam may be an SSB synchronization signal block index for multi PRACH transmission, or the beam index of the optimal beam may be an RO index for multi PRACH transmission.

Assume that a first PRACH of a multi-PRACH transmission is transmitted on an SSB 1-associated RO and a second PRACH is transmitted on an SSB 2-associated RO. Then the first candidate beam index may be SSB1, i.e., the first candidate beam is the beam corresponding to SSB 1; the second candidate beam index may be SSB2, i.e., the second candidate beam is the beam corresponding to SSB 2. Alternatively, the first candidate beam index may be RO1, i.e., the first candidate beam is the beam employed by the PRACH sent by the terminal on RO 1; the second candidate beam index may be RO2, i.e., the second candidate beam is the beam that the terminal adopts when transmitting PRACH on RO 2.

When the first reserved bit is two reserved bits (i.e. 2 bits or 2 bits), the first reserved bit may be a reserved bit in the RAR and a reserved bit contained in the UL grant.

Specifically, if the beam indication information in the target information is carried by 2 reserved bits in the RAR, the beam index of the optimal beam may be determined based on the state value of the 2 bits through a relationship between the state value and the candidate beam index. For example, the state values corresponding to two reserved bits carried in the MAC RAR message are combined according to a predefined sequence to obtain the state values of the two reserved bits, and the beam index is determined according to the state values of the two reserved bits; or determining the beam index according to the candidate beam information indicated by the state values respectively corresponding to the two reserved bits, wherein the candidate beam information is used for representing one beam in the N candidate beams. Further, if a reserved bit in the UL grant of the 2 bits may be a CSI request field.

When the optimal beam is determined through the combination of 2 reserved bits, the candidate beams transmitted by the multi PRACH are 2-4, namely, the multi PRACH transmits at most 4 candidate beams, and the four state values of the reserved bits correspond to at most 4 beam indexes.

In an exemplary embodiment, the beam indication method is described in detail below by taking the case that the MAC RAR carries a 2-bit indication field for indicating the optimal beam.

The MAC RAR carries a 2-bit indication field for indicating the optimal beam, including reserved bits in the MAC RAR and CSI request field in the UL grant. The 2-bit joint indication mode is not limited. For example, mode 11: the 2-bit state values may be combined to indicate a total of four state values of "00", "01", "10", and "11", corresponding to the first, second, third, and fourth candidate beams, respectively. If the status value is "01", the terminal uses the second candidate beam to send uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH. Wherein, the state value of reserved bit in MAC RAR is before, the state value of SCI request field is after; the state value of the reserved bit in the MAC RAR may be the preceding state value of the SCI request field, or the following state value.

Mode 12: the 2-bit state value may also be indicated separately, such as a reserved bit state value of "0" in the MAC RAR for determining the first two candidate beams, a reserved bit state value of "1" for indicating the second two candidate beams, and two state values in the CSI request field for determining whether the optimal beam is the first or the second of the first two candidate beams. For example, assuming that the reserved bit state value in the MAC RAR is "0", the state value of the CSI request field is "1", the terminal transmits uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH using the second candidate beam of the first two candidate beams, i.e., the second candidate beam of the maximum four candidate beams.

Similar to mode 1, the first two candidate beams and the second two candidate beams may also be grouped by CSI request field, and the best beam is determined as the first candidate beam or the second candidate beam in each group by the state value of the reserved bit in the MAC RAR. For example, assuming that the reserved bit state value in the MAC RAR is "0", the state value of the CSI request field is "1", the terminal transmits uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH using the first candidate beam of the last two candidate beams, i.e., the third candidate beam of the maximum four candidate beams.

The 2-bit indication field can indicate at most 4 candidate beams, but if the number of the beams adopted by the multi-PRACH transmission is less than 4, the network side equipment can still indicate through 2 bits, and only part of the state values have no corresponding candidate beams. As in the first embodiment, the candidate beam index in this embodiment may be an SSB index, and the candidate beam is a beam corresponding to the SSB, or the candidate beam index may be an RO index, and the candidate beam is a beam adopted when the terminal sends the PRACH on the RO.

Optionally, when the target information is beam indication information carried by a newly added field in the RAR, the determining an optimal beam according to the target information may be implemented by:

Step a1, determining a beam index of an optimal beam in a Bitmap mode according to the beam indication information carried by the newly added field; or,

and a2, determining the beam index of the optimal beam in an index mode according to the beam indication information carried by the newly added field.

Wherein the optimal beam is determined based on the beam index of the optimal beam.

Specifically, the terminal receives the MAC RAR, and determines the optimal beam through the new bits in the MAC RAR; and the terminal adopts the optimal beam to send the uplink Msg3 PUSCH and/or HARQ-ACK feedback aiming at the Msg4 PDSCH. The beam index of the optimal beam and thus the optimal beam may be determined in at least two ways: one way (i.e. way 21) is that the terminal determines the optimal beam indicated by the newly added bit according to the Bitmap; another way (i.e., way 22) is for the terminal to determine the optimal beam for the newly added bit indication based on the indexing way.

wherein, N is a fixed value; or,

and N is a non-fixed value.

Here N, whether fixed or not, is configured by predefined or by higher layer signaling. Additionally, if N is not a fixed value, it is also necessary to configure N in different situations through predefined or higher layer signaling, for example, by frequency band division N, i.e., different frequency bands correspond to different N.

Specifically, for the above mode 21, the new bit in the mac RAR is a fixed value, such as 64bits; alternatively, the new increment bit size is a non-fixed value, e.g., FR1 is increased by 8bits and FR2 is increased by 64bits, as determined by the frequency domain range. Where FR1 and FR2 are two regions of the 5G spectrum, FR is the Frequency Range. The frequency range of FR1 is 450MHz to 6GHz, also called Sub6G (below 6 GHz). The frequency range of FR2 is 24GHz to 52GHz, and the electromagnetic wave wavelength of this spectrum is mostly in millimeter level, so that it is also called millimeter wave mmWave (generally greater than 30GHz and called millimeter wave).

Aiming at the mode 22, the new bit in the MAC RAR is a fixed value, such as 6bits; alternatively, the new increment bit size is a non-fixed value, as determined by the frequency domain range, FR1 is incremented by 3bits and FR2 is incremented by 6bits.

Optionally, according to the beam indication information carried by the newly added field, determining the beam index of the optimal beam by means of a Bitmap may be implemented by the following steps:

the number of bits with the state value being the first preset value is greater than 1 or equal to 1, and the beam index corresponding to one bit (i.e., the beam index corresponding to one bit with the state value being the first preset value) corresponds to one optimal beam index (i.e., the beam index of the optimal beam).

The first preset value may be any predefined value, for example, the first preset value is 1, that is, the state value of the bit is 1, and the beam index corresponding to the bit representing the state value of 1 is the beam index of the optimal beam. The first preset value is not limited here. The correspondence of bits to beam indices, such as the first bit to the first SSB index (i.e., candidate beam index).

Optionally, when the number of bits with the state value being the first preset value is greater than 1, the sending of the physical uplink shared channel Msg3PUSCH of the message 3 and/or the sending of the automatic request retransmission acknowledgement HARQ-ACK feedback for the physical downlink shared channel Msg4 PDSCH of the message 4 according to the optimal beam may be achieved by:

step b1, selecting a target optimal beam from a plurality of optimal beams, wherein the target optimal beam is any one of the optimal beams;

and b2, sending a message 3 physical uplink shared channel Msg3PUSCH according to the target optimal beam, and/or sending automatic request retransmission acknowledgement HARQ-ACK feedback aiming at a message 4 physical downlink shared channel Msg4 PDSCH.

The beam index of the optimal beam can be determined to be greater than or equal to 1 beam index in a Bitmap mode.

For example, in the third embodiment, a beam indicating method is described in detail below by taking, as an example, determining a beam index of an optimal beam by means of Bitmap, with respect to mode 21.

The new bit of the MAC RAR indicates the optimal beam by Bitmap. The terminal determines the beam index of the optimal beam in a Bitmap mode, and determines the optimal beam according to the beam index.

Specifically, in one case, the length of the newly added bit may be a fixed value, for example, 64 bits, one bit corresponds to one candidate beam, if the bit state value is "0", it represents that the candidate beam is not the optimal beam, if the bit state value is "1", it represents that the candidate beam is the optimal beam, and the terminal uses the candidate beam to send uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH.

The bitmap approach may indicate an optimal beam, e.g., a candidate beam with a bit state value of "1" is the optimal beam, and only one bit state value is "1".

Optionally, the bitmap mode may indicate more than one optimal beam, and the terminal may optionally select one beam from multiple beams to transmit subsequent Msg3 PUSCH or HARQ-ACK feedback for Msg4 PDSCH.

The beam index may be an SSB index for multi PRACH transmission, or the beam index may be an RO index for multi PRACH transmission.

The 64 bits mainly consider that when candidate beam indexes are SSB indexes, up to 64 SSBs can be configured, up to 64 candidate beams are possible, each bit corresponds to one SSB index, and each candidate beam is the beam corresponding to the SSB index. The Bitmap length may be any length determined by any factor.

Alternatively, the length of the bitmap may be non-fixed, e.g., variable according to the frequency domain range. If the current frequency band is FR1, only 8 bits of bitmap indication needs to be added in the MAC RAR. If the current frequency band is FR2, a 64-bit bitmap indication needs to be added to the MAC RAR. The above bit number determination mainly considers that when candidate beam indexes are SSB indexes, the FR1 network side device can only configure 8 SSBs at most, and only 8 candidate beams at most, while the FR2 network side device can configure 64 SSBs at most, and at most, 64 candidate beams are possible, each bit corresponds to one SSB index, and each candidate beam is the beam corresponding to the SSB index.

It should be noted that 8 and 64 are only exemplary, and may be other bit lengths determined by the frequency domain range, or may be multiple bit lengths determined by other factors.

As in the first and second embodiments, each bit in this embodiment may also correspond to an RO index, and the candidate beam is a beam adopted by the PRACH transmitted by the terminal on the RO.

Optionally, the determining, by means of an index, the beam index of the optimal beam according to the beam indication information carried by the newly added field may be implemented by the following steps:

Wherein, each state value of the newly added bit corresponds to a beam index. For example, the state value without the corresponding beam index is set to reserved; the remaining bits in the 8bits byte alignment are regarded as reserved bits.

For example, in the fourth embodiment, a beam indicating method is described in detail below by taking, as an example, determining a beam index of an optimal beam by indexing, with respect to mode 22.

The new bits of the MAC RAR indicate the optimal beam by indexing. And the terminal determines the optimal beam in an index mode according to the newly added bit.

Specifically, in one case, the newly added bit length may be a fixed value, such as 6 bits, and may indicate 2≡6, that is, 64 state values. One state value may indicate one candidate beam, e.g., state value "000000" may indicate the first candidate beam index, at which point the terminal sends uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH using the first candidate beam. The status value "000010" may indicate a third candidate beam index, and the terminal transmits uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH using the third candidate beam.

The candidate beam index may be an SSB index, where the candidate beam is a beam corresponding to the SSB, or the candidate beam index may be an RO index, where the candidate beam is a beam used by the terminal when transmitting the PRACH on the RO. When index indication is adopted, the network side equipment can only indicate 1 optimal beam through the new added bit.

Alternatively, the newly added bit length may be non-fixed, e.g., may vary according to the frequency domain range. If the current frequency band is FR1, only a bit map indication of 3 bits is added in the MAC RAR. If the current frequency band is FR2, a bit map indication of 6 bits needs to be added in the MAC RAR. The above bit number determination mainly considers that when candidate beam indexes are SSB indexes, the FR1 network side device can only configure 8 SSBs at most, and only 8 candidate beams at most, while the FR2 network side device can configure 64 SSBs at most, and at most, 64 candidate beams are possible, each state value corresponds to one SSB index, and the candidate beam is the beam corresponding to the SSB index.

It should be noted that 3 and 6 are only exemplary, and may be other bit lengths determined by the frequency domain range, or may be multiple bit lengths determined by other factors.

As in the first, second and third embodiments, each bit in this embodiment may also correspond to an RO index, and the candidate beam is a beam adopted by the PRACH transmitted by the terminal on the RO.

Note that the MAC RAR needs to pay attention to byte alignment when adding bits, one byte corresponding to 8 bits. Therefore, in this embodiment, no matter whether 3 bits, 6 bits or any other bits are added, 8-bit byte alignment is required. The 8 bits are reserved bits if no bit for the optimal beam indication is available, and are the same as 1 reserved bit in the prior art. And then is used for other newly added functions in the subsequent version evolution.

Therefore, the method and the device indicate the optimal beam in a plurality of beams used for multi PRACH transmission through reserved bits or newly added bits in the MAC RAR, and take the optimal beam as the beam adopted for uplink Msg3PUSCH and/or HARQ-ACK feedback transmission of Msg4 PDSCH, so that the performance of subsequent terminal transmission is improved.

Fig. 4 is a flow chart of a beam indicating method according to another embodiment of the present application, and as shown in fig. 4, an execution body of the beam indicating method according to this embodiment is a network side device. The beam indication method provided by the embodiment of the application comprises the following steps:

Step 401, determining target information.

The target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR; the beam indication information is used for indicating the optimal beam of the terminal.

And step 402, sending target information to the terminal.

The network side equipment (here may refer to a base station) acts similarly to the terminal, that is, indicates an optimal beam through a reserved bit or an newly added bit in the MAC RAR, and the base station receives uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4 PDSCH on the optimal beam.

Specifically, the network side device indicates which beam is the optimal beam to be adopted by the terminal through the first reserved bit or through a new field in the RAR, so that the terminal can send the message 3 physical uplink shared channel Msg3 PUSCH and/or send automatic request retransmission acknowledgement HARQ-ACK feedback for the message 4 physical downlink shared channel Msg4 PDSCH by adopting the indicated optimal beam.

Specifically, when the base station receives the multiple PRACH sent by the terminal by using the differential beam, the base station can notify the optimal beam to the terminal after judging the optimal beam, so that the terminal can perform subsequent Msg3 PUSCH and HARQ-ACK feedback for Msg4 by using the optimal beam, and the transmission performance of the subsequent terminal is improved. The technical problem that when the Rel-18 supports the adoption of differential beam transmission multi PRACH and a terminal transmits a plurality of candidate beams, the Msg3 PUSCH and/or the HARQ-ACK automatic request retransmission feedback aiming at the Msg4 PDSCH message cannot be realized for optimal performance transmission is solved.

Optionally, when the target information is beam indication information carried by the first reserved bit in the RAR, the determining the target information may be implemented by:

step c1, generating beam indication information according to the corresponding relation between the state value of the first reserved bit and the candidate beam index; wherein, the first reserved bit is reserved bit in RAR and/or reserved bit contained in RAR uplink grant UL grant;

and c2, carrying the beam indication information through the first reserved bit, and taking the message of the beam indication information carried by the first reserved bit as the target information.

The first reserved bit may be one reserved bit or two reserved bits, and the beam indication information is generated according to the corresponding relationship between the state value of the first reserved bit and the candidate beam index through the following two scene introduction.

In scenario 3, referring to scenario 1, when the first reserved bit is a reserved bit (i.e. 1bit or 1 bit), the first reserved bit may be a reserved bit in the RAR, or may be a reserved bit contained in the UL grant. The reserved bit in the UL grant may be a CSI request field.

Specifically, when the optimal beam is determined by 1 reserved bit, there are 2 candidate beams for multi PRACH transmission. The two state values of the reserved bit correspond to 2 beam indexes, respectively. The specific implementation process of indicating the optimal beam by the 1-bit indication field carried by the MAC RAR can be referred to in the first embodiment, and will not be described herein.

Scenario 4, see scenario 2, where the first reserved bit is two reserved bits (i.e., 2 bits or 2 bits), may be reserved bits in the RAR and reserved bits contained in the UL grant.

Specifically, when the optimal beam is determined through the combination of 2 reserved bits, the candidate beams of multi-PRACH transmission are 2-4, namely, the multi-PRACH transmission has 4 candidate beams at most, and four state values of reserved bits correspond to 4 beam indexes at most. The specific implementation process of the MAC RAR carrying the 2-bit indication field to indicate the optimal beam can be referred to in the second embodiment, and will not be described herein.

Optionally, when the target information is beam indication information carried by a newly added field in the RAR, the determining the target information may be implemented by:

step d1, indicating the beam index of the optimal beam in a Bitmap mode; or, indicating the beam index of the optimal beam in an index way;

step d2, generating the beam indication information according to the beam index of the optimal beam;

step d3, carrying the beam indication information through the newly added field, and taking the message of the beam indication information carried by the newly added field as the target information.

Specifically, the network side device indicates an optimal beam through a new added bit in the MAC RAR, informs the terminal to send uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4PDSCH by using the optimal beam, and receives uplink Msg3 PUSCH and/or HARQ-ACK feedback for Msg4PDSCH on the optimal beam. The beam index of the optimal beam, and thus the optimal beam, may be indicated in at least two ways: one way (i.e., way 31) is that the base station indicates the optimal beam by adding bits according to the Bitmap way; another way (i.e., way 32) is for the base station to indicate the optimal beam by the new bit according to the index way.

wherein, N is a fixed value; or,

and N is a non-fixed value.

Specifically, for the above mode 31, the new bit in the mac RAR is a fixed value, such as 64bits; alternatively, the new increment bit size is a non-fixed value, e.g., FR1 is increased by 8bits and FR2 is increased by 64bits, as determined by the frequency domain range.

Aiming at the mode 32, the new bit in the MAC RAR is a fixed value, such as 6bits; alternatively, the new increment bit size is a non-fixed value, as determined by the frequency domain range, FR1 is incremented by 3bits and FR2 is incremented by 6bits.

Optionally, the indicating the beam index of the optimal beam by means of the Bitmap may be implemented by the following steps:

For the implementation 31, the implementation process of indicating the optimal beam by the Bitmap method by the new bit of the mac RAR may refer to the third embodiment, which is not described herein.

Optionally, the indicating the beam index of the optimal beam by the indexing method may be implemented by the following steps:

For mode 32, the implementation process of indicating the optimal beam by the new bit of the mac RAR through the index mode may refer to embodiment four, and will not be described herein.

Therefore, when the base station receives the multi PRACH sent by the terminal by adopting the differential beam, the base station informs the terminal of the optimal beam after judging the optimal beam, so that the terminal adopts the optimal beam to carry out subsequent Msg3 PUSCH and HARQ-ACK feedback aiming at the Msg4 PDSCH, and the transmission performance of the subsequent terminal is improved.

Fig. 5 is a schematic structural diagram of a beam indicating device provided in an embodiment of the present application, and as shown in fig. 5, the beam indicating device provided in the embodiment is applied to a terminal, and the beam indicating device provided in the embodiment includes: a transceiver 500 for receiving and transmitting data under the control of a processor 510.

Where in FIG. 5, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, as represented by processor 510, and the memory, as represented by memory 520, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 500 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 510 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 510 in performing operations.

Processor 510 may be a Central Processing Unit (CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field-programmable gate array (Field-Programmable Gate Array, FPGA) or complex programmable logic device (Comple 6 Programmable Logic Device, CPLD), and may also employ a multi-core architecture.

In the present embodiment, a memory 520 for storing a computer program; a transceiver 500 for transceiving data under the control of the processor 510; a processor 510 for reading the computer program in the memory and performing the following operations:

determining an optimal beam according to the target information;

Optionally, when the target information is beam indication information carried by the first reserved bit in the RAR, the processor 510 is configured to determine an optimal beam according to the target information, and specifically includes:

Optionally, when the target information is beam indication information carried by a new field in the RAR, the processor 510 is configured to determine an optimal beam according to the target information, and specifically includes:

wherein, N is a fixed value; or,

and N is a non-fixed value.

Optionally, the processor 510 is configured to determine, according to the beam indication information carried in the newly added field, a beam index of the optimal beam by means of a Bitmap, where the method specifically includes:

Optionally, when the number of bits with the status value being the first preset value is greater than 1, the processor 510 is configured to send the message 3 physical uplink shared channel Msg3 PUSCH according to the optimal beam, and/or send the automatic request retransmission acknowledgement HARQ-ACK feedback for the message 4 physical downlink shared channel Msg4 PDSCH, which specifically includes:

Optionally, the processor 510 is configured to determine, by means of an index, a beam index of the optimal beam according to the beam indication information carried in the newly added field, where the method specifically includes:

Determining the beam index of the optimal beam according to the corresponding relation between the state value of the newly added field and the candidate beam index;

wherein the N bits included in the newly added field form 2 ^N And a state value, wherein one state value corresponds to one candidate beam index.

It should be noted that, the beam indicating device provided in the present application can implement all the method steps implemented by the method embodiments shown in fig. 2 to 3, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in the present embodiment are omitted herein.

Fig. 6 is a schematic structural diagram of a beam pointing device according to another embodiment of the present application, and as shown in fig. 6, the beam pointing device 600 according to this embodiment includes:

A receiving unit 601, configured to receive target information sent by a network side device; the target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR;

a first processing unit 602, configured to determine an optimal beam according to the target information;

the second processing unit 603 is configured to send a message 3 physical uplink shared channel Msg3 PUSCH and/or send automatic request retransmission acknowledgement HARQ-ACK feedback for a message 4 physical downlink shared channel Msg4 PDSCH according to the optimal beam.

Optionally, the first processing unit is specifically configured to:

when the target information is beam indication information carried by a first reserved bit in the RAR, determining a beam index of an optimal beam according to a corresponding relation between a state value of the first reserved bit and a candidate beam index;

Optionally, the first processing unit is specifically configured to:

when the target information is beam indication information carried by a newly added field in the RAR, determining a beam index of an optimal beam in a Bitmap mode according to the beam indication information carried by the newly added field; or,

wherein, N is a fixed value; or,

and N is a non-fixed value.

Optionally, the first processing unit is specifically configured to:

when the state value of any bit in the N bits included in the newly added field is a first preset value, the beam index corresponding to the bit is the beam index of the optimal beam;

Optionally, the second processing unit is specifically configured to:

when the number of bits with the state value being a first preset value is greater than 1, selecting a target optimal beam from a plurality of optimal beams, wherein the target optimal beam is any one of the plurality of optimal beams;

Optionally, the first processing unit is further specifically configured to:

It should be noted that, the beam indicating device provided in the present application can implement all the method steps implemented in the method embodiments of fig. 2 to 3, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiments in this embodiment are omitted.

Fig. 7 is a schematic structural diagram of a beam indicating device according to another embodiment of the present application, and as shown in fig. 7, the beam indicating device according to this embodiment is applied to a network side device. The beam indicating device provided in this embodiment includes: a transceiver 700 for receiving and transmitting data under the control of a processor 710.

Wherein in fig. 7, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 710 and various circuits of memory represented by memory 720, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 700 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 710 in performing operations.

Processor 710 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field-programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Comple 8 Programmable Logic Device, CPLD), or may employ a multi-core architecture.

In this embodiment, a memory 720 for storing a computer program; a transceiver 700 for transceiving data under the control of the processor; a processor 710 for reading the computer program in the memory and performing the following operations:

and sending the target information to the terminal.

Optionally, the processor 710 is configured to, when the target information is beam indication information carried by the first reserved bit in the RAR, determine the target information, specifically include:

Optionally, the processor 710 is configured to, when the target information is beam indication information carried in a newly added field in the RAR, determine the target information, specifically include:

wherein, N is a fixed value; or,

and N is a non-fixed value.

Optionally, the processor 710 is configured to, when indicating the beam index of the optimal beam by means of a Bitmap, specifically include:

Optionally, the processor 710 is configured to, by way of index, indicate the beam index of the optimal beam, and specifically include:

It should be noted that, the beam indicating device provided in the present application can implement all the method steps implemented by the method embodiments shown in fig. 2 and fig. 4, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in the present embodiment are omitted herein.

Fig. 8 is a schematic structural diagram of a beam indicating device according to another embodiment of the present application, as shown in fig. 8, where the beam indicating device provided in the embodiment of the present application is applied to a network side device, the beam indicating device 800 provided in the embodiment includes:

a processing unit 801 for determining target information; the target information comprises beam indication information carried by a first reserved bit in the random response access RAR; or the target information comprises beam indication information carried by a newly added field in the random response access RAR; the beam indication information is used for indicating the optimal beam of the terminal;

a transmitting unit 802, configured to transmit the target information to the terminal.

Optionally, the processing unit is specifically configured to:

when the target information is beam indication information carried by a first reserved bit in an RAR, generating the beam indication information according to the corresponding relation between the state value of the first reserved bit and the candidate beam index; wherein, the first reserved bit is reserved bit in RAR and/or reserved bit contained in RAR uplink grant UL grant;

Optionally, the processing unit is further specifically configured to:

when the target information is beam indication information carried by a newly added field in the RAR, indicating a beam index of an optimal beam in a Bitmap mode; or, indicating the beam index of the optimal beam in an index way;

wherein, N is a fixed value; or,

and N is a non-fixed value.

Optionally, the processing unit is specifically configured to:

Optionally, the processing unit is further specifically configured to:

It should be noted that, the beam indicating device provided in the present application can implement all the method steps implemented in the method embodiments of fig. 2 and fig. 4, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiments in this embodiment are omitted.

It should be noted that, the division of the units in the embodiment of the present application is schematic, only one logic function is divided, and another division manner may be implemented in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all or part of the technical solution contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Embodiments of the present application also provide a processor readable storage medium. The processor-readable storage medium stores a computer program for causing a processor to perform any one of the method embodiments described above.

Among other things, processor-readable storage media can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, tapes, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), etc.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A beam pointing method, applied to a terminal, comprising:

determining an optimal beam according to the target information;

2. The method of claim 1, wherein when the target information is beam indication information carried by a first reserved bit in the RAR, the determining an optimal beam according to the target information includes:

3. The method according to claim 1, wherein when the target information is beam indication information carried in a newly added field in the RAR, the determining an optimal beam according to the target information includes:

4. A method according to claim 3, wherein the newly added field comprises N bits, N being an integer greater than 1, the N being predefined by a protocol or the N being configured by higher layer signaling;

wherein, N is a fixed value; or,

and N is a non-fixed value.

5. The method of claim 4, wherein the determining, according to the beam indication information carried in the new field, the beam index of the optimal beam by means of a Bitmap includes:

6. The method according to claim 5, wherein when the number of bits with the status value being the first preset value is greater than 1, the sending the message 3 physical uplink shared channel Msg3 PUSCH according to the optimal beam and/or sending the automatic request retransmission acknowledgement HARQ-ACK feedback for the message 4 physical downlink shared channel Msg4 PDSCH comprises:

7. The method of claim 4, wherein determining, by way of index, the beam index of the optimal beam according to the beam indication information carried by the newly added field comprises:

8. The method according to any one of claims 2 to 7, wherein,

the wave beam index of the optimal wave beam is a synchronous signal block SSB index used for physical random access channel PRACH transmission, wherein the optimal wave beam is a wave beam adopted by transmitting a corresponding PRACH on a random access channel transmission opportunity RO associated with the SSB index; or,

9. A beam pointing method, applied to a network side device, comprising:

and sending the target message to the terminal.

10. The method of claim 9, wherein when the target information is beam indication information carried by a first reserved bit in the RAR, the determining the target information includes:

11. The method of claim 9, wherein when the target information is beam indication information carried by a newly added field in the RAR, the determining the target information includes:

12. The method of claim 11, wherein the newly added field comprises N bits, N is an integer greater than 1, the N is predefined by a protocol, or the N is configured by higher layer signaling;

wherein, N is a fixed value; or,

and N is a non-fixed value.

13. The method of claim 12, wherein the indicating the beam index of the optimal beam by means of a Bitmap includes:

14. The method of claim 13, wherein the beam indication information is used to instruct the terminal to select a target optimal beam from a plurality of the optimal beams when the number of bits whose status value is the first preset value is greater than 1; wherein the target optimal beam is any one of a plurality of optimal beams.

15. The method of claim 12, wherein the indexing the beam index indicating the optimal beam comprises:

16. The method according to any one of claims 10-15, wherein,

17. A beam pointing apparatus for use in a terminal, said apparatus comprising a memory, a transceiver, and a processor:

determining an optimal beam according to the target information;

18. A beam pointing apparatus, wherein the apparatus is applied to a network side device, the apparatus comprises: memory, transceiver, processor:

and sending the target information to the terminal.

19. A beam pointing apparatus, the apparatus being for use in a terminal, the apparatus comprising:

20. A beam pointing apparatus, wherein the apparatus is applied to a network side device, the apparatus comprises:

21. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 16.