CN118265146A

CN118265146A - Beam determining method, device, computer equipment and storage medium

Info

Publication number: CN118265146A
Application number: CN202410511519.XA
Authority: CN
Inventors: 张武荣
Original assignee: Shirong Energy Technology Co ltd
Current assignee: Shirong Energy Technology Co ltd
Priority date: 2024-04-26
Filing date: 2024-04-26
Publication date: 2024-06-28

Abstract

The present disclosure relates to a beam determining method, apparatus, computer device, and storage medium. The method comprises the following steps: the network equipment acquires time-frequency resources, wherein the time-frequency resources are time-frequency resources of physical random access channel PRACH signals sent by the user equipment; determining a target beam index identifier of a target uplink beam, wherein the target uplink beam is an uplink beam used for transmitting PRACH signals in a plurality of uplink beams; determining a target wireless random access temporary identifier RA-RNTI based on the time-frequency resource and the target beam index identifier; and sending downlink information to the user equipment based on the target RA-RNTI, wherein the downlink information comprises a preset check code scrambled based on the target RA-RNTI. The method aims at the scene that one downlink wave beam corresponds to a plurality of uplink wave beams, and introduces the wave beam index identification of the uplink wave beam when calculating the RA-RNTI, so that the user equipment can determine the uplink wave beam which the user equipment belongs to based on the RA-RNTI, thereby ensuring that the same time-frequency resource can be multiplexed in different uplink wave beams, and improving the capacity of a wireless communication system.

Description

Beam determining method, device, computer equipment and storage medium

Technical Field

The disclosure relates to the technical field of communication, and in particular relates to a beam determining method, a beam determining device, computer equipment and a storage medium.

Background

Satellites in an NTN (Non-TERRESTRIAL NETWORKS, non-terrestrial network) satellite communication system may support one or more beams, and the same frequency may be multiplexed under different beams, thereby increasing the capacity of the wireless communication system.

In the related art, for a scenario in which the uplink beam and the downlink beam cover the same area, after receiving the broadcast information of the downlink beam, the ue may determine the uplink beam to which the ue belongs. However, for the scenario that one downlink beam corresponds to a plurality of uplink beams, after receiving the broadcast information of the downlink beam, the user equipment may determine the number of uplink beams corresponding to the downlink beam, but cannot determine which uplink beam belongs to.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a beam determining method, apparatus, computer device, and storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a beam determining method, applied to a network device, the method including:

acquiring time-frequency resources, wherein the time-frequency resources are time-frequency resources of physical random access channel PRACH signals sent by user equipment;

determining a target beam index identifier of a target uplink beam, wherein the target uplink beam is an uplink beam used for transmitting the PRACH signal in a plurality of uplink beams;

determining a target radio random access temporary identifier RA-RNTI based on the time-frequency resource and the target beam index identifier;

And sending downlink information to user equipment based on the target RA-RNTI, wherein the downlink information comprises a preset check code scrambled based on the target RA-RNTI.

In some embodiments, the time-frequency resources include: the uplink beam comprises a first index identifier, a second index identifier, a third index identifier and a fourth index identifier, wherein the first index identifier is an index identifier of an uplink carrier contained in the uplink beam, the second index identifier is an index identifier of a subcarrier contained in the uplink carrier, the third index identifier is an index identifier of a subframe contained in the subcarrier, and the fourth index identifier is an index identifier of a preset symbol contained in the subframe.

In some embodiments, the determining a target RA-RNTI based on the time frequency resource and the target beam index identity comprises:

Determining the target RA-RNTI based on the first index identity, the second index identity, the third index identity, the fourth index identity, the target beam index identity, the first quantity, the second quantity, the third quantity, and the fourth quantity;

The first number is the number of the preset symbols, the second number is the number of the subframes, the third number is the number of the subcarriers, and the fourth number is the number of the uplink carriers.

In some embodiments, the method further comprises:

and sending broadcast information of downlink beams to the user equipment, wherein the broadcast information comprises a fifth number, and the fifth number is the number of uplink beams corresponding to the downlink beams.

According to a second aspect of embodiments of the present disclosure, there is provided a beam determining method, applied to a user equipment, the method comprising:

receiving downlink information sent by network equipment, wherein the downlink information comprises a scrambled preset check code;

Determining a radio random access temporary identifier (RA-RNTI) corresponding to each uplink wave beam based on a time-frequency resource and a wave beam index identifier of each uplink wave beam in a plurality of uplink wave beams, wherein the time-frequency resource is a time-frequency resource of a Physical Random Access Channel (PRACH) signal sent by the user equipment;

Descrambling a scrambled preset check code in the downlink information based on the RA-RNTI, and determining the RA-RNTI successfully descrambled by the scrambled preset check code as a target RA-RNTI;

And determining the uplink beam corresponding to the target RA-RNTI as the target uplink beam to which the user equipment belongs.

In some embodiments, the method further comprises:

And receiving broadcast information sent by the network equipment, wherein the broadcast information comprises a fifth number, and the fifth number is the number of uplink beams corresponding to the downlink beams.

According to a third aspect of embodiments of the present disclosure, there is provided a beam determining apparatus configured to a network device, the apparatus comprising:

the time-frequency resource acquisition module is configured to acquire time-frequency resources, wherein the time-frequency resources are time-frequency resources of physical random access channel PRACH signals sent by user equipment;

The index identification determining module is configured to determine a target beam index identification of a target uplink beam, wherein the target uplink beam is an uplink beam used for transmitting the PRACH signal in a plurality of uplink beams;

A temporary identity determination module configured to determine a target radio random access temporary identity RA-RNTI based on the time frequency resource and the target beam index identity;

And the information sending module is configured to send downlink information to the user equipment based on the target RA-RNTI, wherein the downlink information comprises a preset check code scrambled based on the target RA-RNTI.

In some embodiments, the temporary identification determination module is configured to:

In some embodiments, the apparatus further comprises:

The broadcast information sending module is configured to send broadcast information of downlink beams to the user equipment, wherein the broadcast information comprises a fifth number, and the fifth number is the number of uplink beams corresponding to the downlink beams.

According to a fourth aspect of embodiments of the present disclosure, there is provided a beam determining apparatus configured to a user equipment, the apparatus comprising:

The information receiving module is configured to receive downlink information sent by the network equipment, wherein the downlink information comprises a scrambled preset check code;

the temporary identifier determining module is configured to determine a radio random access temporary identifier (RA-RNTI) corresponding to each uplink wave beam based on a time-frequency resource and a wave beam index identifier of each uplink wave beam in a plurality of uplink wave beams, wherein the time-frequency resource is a time-frequency resource of a Physical Random Access Channel (PRACH) signal sent by the user equipment;

The target identifier determining module is configured to descramble the scrambled preset check code in the downlink information based on the RA-RNTI, and determine the RA-RNTI successfully descrambled by the scrambled preset check code as a target RA-RNTI;

and the target beam determining module is configured to determine the uplink beam corresponding to the target RA-RNTI as the target uplink beam to which the user equipment belongs.

In some embodiments, the apparatus further comprises:

the broadcast information receiving module is configured to receive broadcast information sent by the network device, wherein the broadcast information comprises a fifth number, and the fifth number is the number of uplink beams corresponding to the downlink beams.

According to a fifth aspect of embodiments of the present disclosure, there is provided a computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the steps of the method according to the first aspect when executing the computer program or the steps of the method according to the second aspect when executing the computer program.

According to a fourth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the first aspect or which, when executed by a processor, implements the steps of the method according to the second aspect.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

According to the method provided by the embodiment of the disclosure, aiming at the scene that one downlink beam corresponds to a plurality of uplink beams, when a network device acquires a time-frequency resource, the network device can be used for transmitting a target uplink beam of a PRACH signal, then, when an RA-RNTI is calculated, a target beam index identifier of the target uplink beam is introduced, namely, the target RA-RNTI is determined based on the time-frequency resource and the target beam index identifier, the target RA-RNTI can indicate the target uplink beam to which the user device belongs, therefore, downlink information is transmitted to the user device based on the target RA-RNTI, after the user device receives the downlink information, the target uplink beam to which the user device belongs can be determined by descrambling a preset check code scrambled in the downlink information, so that the same time-frequency resource can be multiplexed in different uplink beams, and the capacity of a wireless communication system is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of a satellite communication system, shown according to an exemplary embodiment;

FIG. 2 is a schematic diagram of a satellite communication system, shown according to an exemplary embodiment;

FIG. 3 is a flow chart illustrating a method of beam determination according to an exemplary embodiment;

FIG. 4 is a flow chart illustrating a method of beam determination according to an exemplary embodiment;

FIG. 5 is a flow chart illustrating a method of beam determination according to an exemplary embodiment;

Fig. 6 is a block diagram of a beam determining apparatus according to an exemplary embodiment;

Fig. 7 is a block diagram of a beam determining apparatus according to an exemplary embodiment;

FIG. 8 is a block diagram of a computer device shown according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

With the large-scale deployment of 4G and 5G networks, the application scenarios of wireless cellular networks continue to expand and begin to expand into the air and underwater. Satellite communication becomes an important research direction, in the 3GPP Rel-17 protocol, a Non-terrestrial network (Non-TERRESTRIAL NETWORKS, NTN) is introduced as an important supplement of a terrestrial 4G/5G cellular mobile communication network, and the NTN and the terrestrial 4G/5G cellular mobile communication network are mutually fused, so that the terrestrial, air and ocean can be effectively covered, and the air-ground integrated communication is realized.

Satellite platforms supporting NTN satellite communications all support one or more beams. The same frequency can be multiplexed under different beams, and the capacity of the wireless communication system can be improved. In an example, as shown in fig. 1, in the related art, uplink beams and downlink beams in the NTN satellite communication system cover substantially the same area, each beam corresponds to a cell of the terrestrial network, and the UE (User Equipment) obtains the configuration of the current cell by receiving the downlink signal of each beam, so that the UE camps or communicates in the current cell, and if the UE moves out of the current beam, the wireless communication system starts a mobility management procedure to implement handover between beams.

In the existing NTN satellite communication system, the same random access procedure as the terrestrial cellular system is adopted. When the UE initiates Random access, a Physical Random Access Channel (PRACH) sequence is randomly selected, and then the PRACH signal (PRACH sequence) is transmitted in a time-frequency resource pool preconfigured by a wireless communication system, that is, the UE sends a message 1 signal. The index identity of the PRACH signal is denoted by RAPID.

The wireless communication system needs to solve the problem that messages 1 sent by different UEs collide, that is, the network device needs to determine whether more than one UE sends the same PRACH signal on the same time-frequency resource. The related technology adopts the following processes for judgment:

The UE and the base station (network equipment) take the identifiers of the time-frequency resources for sending the PRACH signals as input variables, the UE and the base station adopt the same calculation formula to calculate an RA-RNTI (Random Access Radio Network Temporary Identity, the radio random access temporary identifier, the RA-RNTI is determined based on a preset function, the independent variables in the preset function are index identifiers corresponding to the time-frequency resources, and when the index identifiers corresponding to the time-frequency resources are different, the RA-RNTI has different values.

Specifically, the RA-RNTI is determined by the following formula:

RA-RNTI＝Func(s_id，t_id，f_id，ul_carrier_id)

Wherein Func () represents a preset function, and s_id, t_id, f_id and ul_carrier_id are index identifiers corresponding to time-frequency resources. Wherein ul_carrier_id represents an index identifier of an uplink carrier, f_id represents an index identifier of a subcarrier included in the uplink carrier, t_id represents an index identifier of a subframe (time slot) included in the subcarrier, s_id represents an index identifier of a preset symbol included in the subframe, and the preset symbol may be an OFDM (Orthogonal Frequency Division Multi-plexing, orthogonal frequency division multiplexing) symbol.

The preset Func () is a multi-level numerical calculation process. For example, each uplink carrier identified by ul_carrier_id as an index contains c subcarriers identified by f_id as an index, each subcarrier contains b subframes identified by t_id as an index, and each subframe contains a preset symbols identified by s_id as an index, and the RA-RNTI is determined by the following formula:

RA-RNTI＝1+s_id+a×t_id+a×b×f_id+a×b×c×ul_carrier_id

For LTE, eMTC, NB-IoT and 5G/NR, the specific manner of time-frequency resource labeling varies due to the different granularity of time-frequency resource sizes and minimum use of the wireless communication system for PRACH transmission. The input parameters required for RA-RNTI calculation are also different for different systems, for example:

For LTE systems:

RA-RNTI＝1+t_id+10×f_id

wherein t_id represents index identifiers (0.ltoreq.t_id < 10) of a first subframe of a designated PRACH signal, and f_id represents index identifiers (0.ltoreq.f_id < 6) arranged in ascending order of frequency domain within the subframe. In this case, both s_id and ul_carrier_id can be considered to be 0.

For a 5G/NR system, take a=14, b=80, c=8 as examples:

RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

Wherein s_id represents an index identifier of a first OFDM symbol (0.ltoreq.s_id < 14) for transmitting the PRACH signal, t_id represents an index identifier of a first time slot (subframe) for transmitting the PRACH signal in one wireless communication system frame, f_id represents an index identifier (0.ltoreq.f_id < 8) in a frequency domain, ul_carrier_id represents an index representation of an uplink carrier, 0 represents a primary carrier, and 1 represents a secondary carrier.

Upon detecting the PRACH signal, the network device obtains a time-frequency resource for transmitting the PRACH signal, denoted by (s_id, t_id, f_id, ul_carrier_id). The network device may also detect RAPID of the PRACH signal. And then according to a contracted formula (the formula), calculating the RA-RNTI.

After the network device calculates the RA-RNTI, downlink information is sent to the designated user device through the PDCCH (Physical Downlink Control Channel ), where the downlink information includes RAR (random access response ) scheduling information and a scrambled CRC (Cyclic Redundancy Check ) check code, where the scrambled CRC check code is obtained by scrambling the CRC check code by the network device using the RA-RNTI corresponding to the designated user device as a scrambling code of the CRC check code of the PDCCH.

For any user equipment receiving the downlink information, the user equipment monitors whether the PDCCH has RAR scheduling information sent to the user equipment by the network equipment. Specifically, after the user equipment receives the downlink information sent by the network equipment, the RA-RNTI corresponding to the user equipment is calculated according to a contracted formula, and then the user equipment performs a descrambling process on the CRC check code in the downlink information on the PDCCH by using the calculated RA-RNTI, where the scrambling process and the corresponding descrambling process are generally exclusive-or operations. If the downlink information on the PDCCH can pass the CRC after the CRC code is descrambled, the user equipment can confirm that the downlink information on the PDCCH is sent to the user equipment. If the downlink information on the PDCCH can not pass the CRC after the CRC code is descrambled, the user equipment is determined not to transmit the PDCCH to the self RAR scheduling message. Then, the ue may further confirm whether the downlink information is sent to itself through RAPID carried in the RAR scheduling information.

Currently, in the NTN satellite communication system and the terrestrial 4G and 5G systems in the related art, since each ue can determine its own RA-RNTI, the ue can be informed of the RAR scheduling information in the above manner, and a different C-RNTI (Cell Radio Network Temporary Identifier ) can be allocated to each ue in the radio communication system to establish a radio connection of an air interface.

However, in the NTN satellite communication system, there is a different and ubiquitous scenario from the above scenario, that is, one downlink beam corresponds to a plurality of uplink beams. As shown in fig. 2, the uplink service satellite and the downlink service satellite are not the same satellite, and one downlink beam corresponds to six uplink beams. Of course, in some examples, the uplink service satellite and the downlink service satellite may be the same satellite.

In this case, all of the user equipments under the plurality of uplink beams corresponding to the same downlink beam receive downlink information through the downlink beam, and at this time, it is very important to distinguish the user equipments under different uplink beams for improving the capacity of the wireless communication system. However, since the ue receives the broadcast information of the downlink beam, the ue can obtain the number of uplink beams corresponding to the downlink beam, but cannot determine which uplink beam the ue belongs to. For example, if two user equipments respectively belong to two different uplink beams, but they use the same time-frequency resource to transmit the same PRACH signal, by applying the above existing method, the wireless communication system will not be able to distinguish RA-RNTIs of the two user equipments, or have no way to allocate different C-RNTIs to the two user equipments, so that multiplexing of uplink frequencies between different uplink beams cannot be achieved, and if the user equipment cannot confirm which uplink beam itself belongs to, beam configuration information related to the uplink beam cannot be resolved.

Aiming at the situation that the user equipment cannot determine the uplink wave beam, the embodiment of the disclosure provides a wave beam determining method, aiming at the scene that one downlink wave beam corresponds to a plurality of uplink wave beams, when the network equipment acquires time-frequency resources, the network equipment can determine the target uplink wave beam for transmitting PRACH signals, then, when calculating RA-RNTI, the target wave beam index identification of the target uplink wave beam is introduced, namely, the target RA-RNTI is determined based on the time-frequency resources and the target wave beam index identification, and the target RA-RNTI can indicate the target uplink wave beam to which the user equipment belongs, so that downlink information is transmitted to the user equipment based on the target RA-RNTI, after the user equipment receives the downlink information, the target uplink wave beam to which the user equipment belongs can be determined by descrambling a preset check code scrambled in the downlink information, thereby ensuring that the same time-frequency resources can be multiplexed in different uplink wave beams, and improving the capacity of a wireless communication system.

The method provided by the embodiment of the disclosure can be applied to a wireless communication system, and the wireless communication system can comprise user equipment and network equipment. It should be noted that the wireless communication system may further include other devices, and the present application is not limited to the devices included in the wireless communication system.

It should be appreciated that the above wireless communication system is applicable to both low frequency and high frequency scenarios. Application scenarios of the wireless communication system include, but are not limited to, long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD) systems, worldwide interoperability for microwave access (worldwide interoperability for micro WAVE ACCESS, wiMAX) communication systems, cloud wireless access network (cloud radio access network, CRAN) systems, future fifth Generation (5 th-Generation, 5G) systems, new Radio (NR) communication systems, or future evolved public land mobile network (public land mobile network, PLMN) systems, etc.

The user equipment shown above may include user equipment devices such as access terminals, user equipment units, user equipment stations, mobile Stations (MSs), remote stations, remote user equipment, mobile user equipment (mobile terminal), wireless communication devices, user equipment agents, and the like. The user device may be provided with wireless transceiver functionality that is capable of communicating (e.g., wirelessly communicating) with one or more network devices of one or more communication systems and receiving network services provided by the network devices. The user equipment may be, among other things, a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a user equipment in a future 5G network or a user equipment in a future evolved PLMN network, etc.

The network device may be an access network device (or access network site). The access network device refers to a device that provides a network access function, such as a radio access network (radio access network, RAN) base station, and so on. Specifically, the Base Station (BS) may be included, or include a base station and a radio resource management device for controlling the base station, etc., and may also include a relay station (relay device), an access point, a base station in a future 5G network, a base station in a future evolved PLMN network, or an NR base station, etc., which may be a wearable device or a vehicle-mounted device. The network device may also be a communication chip with a communication module.

Fig. 3 is a flow chart illustrating a method of beam determination, performed by a network device, see fig. 3, according to an exemplary embodiment, the method comprising the steps of:

Step S301, acquiring a time-frequency resource, where the time-frequency resource is a time-frequency resource of a PRACH signal sent by a user equipment.

The time-frequency resource is a time-frequency resource obtained by the network equipment when the network equipment receives a PRACH signal sent by the user equipment, wherein the PRACH signal is sent through an uplink wave beam to which the user equipment belongs. The time-frequency resource may include a first index identifier, a second index identifier, a third index identifier, and a fourth index identifier, where the first index identifier is an index identifier of an uplink carrier included in the uplink beam, the second index identifier is an index identifier of a subcarrier included in the uplink carrier, the third index identifier is an index identifier of a subframe included in the subcarrier, and the fourth index identifier is an index identifier of a preset symbol included in the subframe. The preset symbol may be an OFDM symbol.

Step S302, determining a target beam index identifier of a target uplink beam, where the target uplink beam is an uplink beam used for transmitting a PRACH signal in the multiple uplink beams.

In the embodiment of the disclosure, the network device has a corresponding receiver for each uplink beam, so when the network device receives the PRACH signal, the network device can determine the uplink beam for transmitting the PRACH signal, i.e. determine the target uplink beam, according to the receiver for receiving the PRACH signal. The network device stores the beam index identifier corresponding to each uplink beam, so that the target beam index identifier of the target uplink beam can be determined. Wherein a beam index identity is used to uniquely represent one uplink beam, which may also be referred to as a beam index number.

Step S303, determining a target RA-RNTI based on the time-frequency resource and the target beam index identifier.

In the embodiment of the disclosure, in order to enable the calculated RA-RNTI to indicate the corresponding uplink beam, a beam index identifier is introduced when the RA-RNTI is calculated, so that the calculated RA-RNTI corresponds to the beam index identifier one by one. For a target uplink beam, determining a target RA-RNTI based on the time-frequency resource and a target beam index identifier corresponding to the target uplink beam, so that the target RA-RNTI corresponds to the target beam index identifier.

Step S304, based on the target RA-RNTI, downlink information is sent to the user equipment, wherein the downlink information comprises a preset check code scrambled based on the target RA-RNTI.

Scrambling the preset check code by adopting a target RA-RNTI to obtain a scrambled preset check code, wherein the downlink information comprises the scrambled preset check code. Of course, the downlink information may also include other information, for example, the downlink information may also include RAR scheduling information.

According to the method provided by the embodiment of the disclosure, for the scene that one downlink beam corresponds to a plurality of uplink beams, when the RA-RNTI is calculated, the target beam index identifiers of the target uplink beams are introduced, so that different RA-RNTI corresponds to different target beam index identifiers, and therefore the uplink beams to which each user equipment belongs can be distinguished while the same time-frequency resource can be multiplexed in different uplink beams, and the capacity of a wireless communication system is improved.

Fig. 4 is a flow chart illustrating a method of beam determination, performed by a user equipment, see fig. 4, according to an exemplary embodiment, the method comprising the steps of:

step S401, receiving downlink information sent by a network device, where the downlink information includes a scrambled preset check code.

See the embodiment shown in the step S304, which is not described herein.

Step S401, determining an RA-RNTI corresponding to each uplink beam based on the time-frequency resource and the beam index identifier of each uplink beam in the plurality of uplink beams, where the time-frequency resource is a time-frequency resource of a physical random access channel PRACH signal sent by the user equipment.

For a beam index identifier of each uplink beam, determining an RA-RNTI corresponding to the beam index identifier based on time-frequency resources and the beam index identifier. The user equipment determines the RA-RNTI in the same way as the network equipment determines the RA-RNTI.

Step S403, descrambling the scrambled preset check code in the downlink information based on the RA-RNTI, and determining the RA-RNTI successfully descrambled by the scrambled preset check code as a target RA-RNTI.

Based on the beam index identification of each uplink beam in the uplink beams, a plurality of RA-RNTI can be determined, and when the scrambled preset check code is descrambled, the plurality of RA-RNTI can be adopted to sequentially descramble the scrambled preset check code until the scrambled preset check code is successfully descrambled. For example, if one downlink beam corresponds to 6 uplink beams, 6 RA-RNTIs are calculated, the 6 RA-RNTIs are sequentially adopted to descramble the scrambled preset check code, and after at most 6 attempts, the RA-RNTIs of the successfully descrambled preset check code can be determined, and the RA-RNTIs are determined as target RA-RNTIs.

Step S404, determining the uplink beam corresponding to the target RA-RNTI as the target uplink beam to which the user equipment belongs.

The uplink beam corresponding to the target RA-RNTI is the uplink beam represented by the target uplink beam index corresponding to the target RA-RNTI, i.e. the uplink beam corresponding to the target RA-RNTI is the target uplink beam. Because the target RA-RNTI can successfully descramble the scrambled preset check code, the uplink beam to which the user equipment belongs can be determined to be the target uplink beam.

Fig. 5 is a flow chart illustrating a method of beam determination performed by a network device and a user device, see fig. 5, according to an exemplary embodiment, the method comprising the steps of:

In step S501, the network device sends broadcast information of a downlink beam to the user device.

In step S502, the ue receives broadcast information of the downlink beam sent by the network device, where the broadcast information includes a fifth number.

The fifth number is the number of uplink beams corresponding to the downlink beams. For example, the fifth number is expressed by max_beam.

Optionally, the broadcast information may further include a fourth number, where the fourth number is the number of uplink carriers included in the uplink beam.

In step S503, the user equipment transmits a PRACH signal to the network equipment.

In step S504, the network device receives the PRACH signal and acquires a time-frequency resource of the PRACH signal.

The time-frequency resource comprises a first index identifier, a second index identifier, a third index identifier and a fourth index identifier, wherein the first index identifier is an index identifier of an uplink carrier wave contained in the uplink beam, the second index identifier is an index identifier of a subcarrier wave contained in the uplink carrier wave, the third index identifier is an index identifier of a subframe wave contained in the subcarrier wave, and the fourth index identifier is an index identifier of a preset symbol contained in the subframe wave. The preset symbol may be an OFDM symbol.

In step S505, the network device determines a target beam index identity of the target upstream beam.

The target uplink beam is an uplink beam used for transmitting the PRACH signal in a plurality of uplink beams.

In step S506, the network device determines a target RA-RNTI based on the time-frequency resource and the target beam index identity.

In some embodiments, determining the target RA-RNTI based on the time-frequency resource and the target beam index identity comprises: determining a target RA-RNTI based on the first index identity, the second index identity, the third index identity, the fourth index identity, the target beam index identity, the first quantity, the second quantity, the third quantity, and the fourth quantity; the first number is the number of preset symbols, the second number is the number of subframes, the third number is the number of subcarriers, and the fourth number is the number of uplink carriers.

In one example, the target RA-RNTI is determined using the following formula:

RA-RNTI＝Func(s_id，t_id，f_id，ul_carrier_id，ul_beam_id)

Wherein Func () represents a preset function, ul_beam_id represents a target beam index identity, ul_carrier_id represents a first index identity, f_id represents a second index identity, t_id represents a third index identity, and s_id represents a fourth index identity.

For example, the target uplink beam identified by using ul_beam_id as a beam index contains d uplink carriers, each uplink carrier identified by using ul_carrier_id as an index contains c subcarriers identified by using f_id as an index, each subcarrier contains b subframes identified by using t_id as an index, and each subframe contains a preset symbol identified by using s_id as an index, and the RA-RNTI is determined by using the following formula:

RA-RNTI＝1+s_id+a×t_id+a×b×f_id+a×b×c×ul_carrier_id+a×b×c×d×ul_beam_id

in step S507, the network device scrambles the preset check code based on the target RA-RNTI to obtain the scrambled preset check code.

The preset check code may be a CRC check code.

Optionally, the network device performs exclusive-or operation on the target RA-RNTI and the preset check code to obtain the scrambled preset check code. Of course, other manners of scrambling may be used, and the scrambling manner is not limited in the embodiments of the disclosure.

In step S508, the network device sends downlink information to the user device, where the downlink information includes the scrambled preset check code.

The downlink information may further include other information, which is not limited by the embodiments of the present disclosure.

Step S509, the ue receives the downlink information sent by the network device.

In step S510, the ue determines the RA-RNTI corresponding to each uplink beam based on the time-frequency resource and the beam index identifier of each uplink beam in the fifth number of uplink beams.

The calculation method of the RA-RNTI corresponding to each uplink beam is the same as that of the target RA-RNTI in step S506. The time-frequency resources are resources known to the user equipment.

In some embodiments, the beam index identifier of each uplink beam is stored in the ue, and after the ue receives the downlink information, the fifth number of RA-RNTIs may be calculated based on traversing the stored beam index identifiers of the uplink beams.

In step S511, the user equipment descrambles the scrambled preset check code in the downlink information based on the RA-RNTI, and determines the RA-RNTI successfully descrambled by the scrambled preset check code as the target RA-RNTI.

And when descrambling the scrambled preset check codes, sequentially descrambling the scrambled preset check codes based on the fifth number of RA-RNTI until the scrambled preset check codes are successfully descrambled, wherein the RA-RNTI with the successfully descrambled scrambled preset check codes is the target RA-RNTI.

Step S512, the user equipment determines the uplink beam corresponding to the target RA-RNTI as the target uplink beam to which the user equipment belongs.

According to the method provided by the embodiment of the disclosure, for the scene that one downlink beam corresponds to a plurality of uplink beams, when the RA-RNTI is calculated, the target beam index identifiers of the target uplink beams are introduced, so that different RA-RNTI corresponds to different target beam index identifiers, and therefore the uplink beams to which each user equipment belongs can be distinguished while the same time-frequency resource can be multiplexed in different uplink beams, and the capacity of a wireless communication system is improved. And after the uplink wave beam to which each user equipment belongs is distinguished, different C-RNTI can be allocated to each user equipment subsequently. So as to establish a wireless connection over the air.

In addition, when the RA-RNTI corresponding to the plurality of uplink beams is used for blind detection of the scrambled CRC check code, the number of uplink beams is limited, for example, the number of uplink beams is smaller than 10, so that the processing amount of the blind detection process is relatively small, and the uplink beam to which the user equipment belongs is easy to determine.

Fig. 6 is a block diagram of a beam determining apparatus configured to a network device, see fig. 6, according to an exemplary embodiment, the apparatus comprising:

The time-frequency resource obtaining module 601 is configured to obtain a time-frequency resource, where the time-frequency resource is a time-frequency resource of a physical random access channel PRACH signal sent by the user equipment;

An index identification determining module 602 configured to determine a target beam index identification of a target uplink beam, where the target uplink beam is an uplink beam used for transmitting a PRACH signal in the plurality of uplink beams;

A temporary identity determination module 603 configured to determine a target radio random access temporary identity RA-RNTI based on the time frequency resource and the target beam index identity;

An information sending module 604, configured to send downlink information to the user equipment based on the target RA-RNTI, where the downlink information includes a preset check code scrambled based on the target RA-RNTI.

In some embodiments, the time-frequency resources include: the method comprises the steps of a first index mark, a second index mark, a third index mark and a fourth index mark, wherein the first index mark is an index mark of an uplink carrier wave contained in an uplink beam, the second index mark is an index mark of a subcarrier wave contained in the uplink carrier wave, the third index mark is an index mark of a subframe wave contained in the subcarrier wave, and the fourth index mark is an index mark of a preset symbol contained in the subframe wave.

In some embodiments, the temporary identification determination module 603 is configured to:

Determining a target RA-RNTI based on the first index identity, the second index identity, the third index identity, the fourth index identity, the target beam index identity, the first quantity, the second quantity, the third quantity, and the fourth quantity;

The first number is the number of preset symbols, the second number is the number of subframes, the third number is the number of subcarriers, and the fourth number is the number of uplink carriers.

In some embodiments, the apparatus further comprises:

The broadcast information sending module is configured to send broadcast information of the downlink wave beam to the user equipment, wherein the broadcast information comprises a fifth quantity, and the fifth quantity is the quantity of uplink wave beams corresponding to the downlink wave beam.

The respective modules in the beam determining apparatus described above may be implemented in whole or in part by software, hardware, or a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

Fig. 7 is a block diagram of a beam determining apparatus configured to a user equipment according to an exemplary embodiment, see fig. 7, the apparatus comprising:

An information receiving module 701, configured to receive downlink information sent by a network device, where the downlink information includes a scrambled preset check code;

A temporary identifier determining module 702, configured to determine, based on a time-frequency resource and a beam index identifier of each uplink beam in the plurality of uplink beams, a radio random access temporary identifier RA-RNTI corresponding to each uplink beam, where the time-frequency resource is a time-frequency resource of a physical random access channel PRACH signal sent by the user equipment;

A target identifier determining module 703, configured to descramble the scrambled preset check code in the downlink information based on the RA-RNTI, and determine the RA-RNTI successfully descrambled by the scrambled preset check code as a target RA-RNTI;

the target beam determining module 704 is configured to determine an uplink beam corresponding to the target RA-RNTI as a target uplink beam to which the user equipment belongs.

In some embodiments, the apparatus further comprises:

In an exemplary embodiment, a computer device is provided, comprising a processor and a memory, the memory storing a computer program, the processor implementing the steps of any of the beam determining methods described above when executing the computer program. The computer device may be a network device or a user device.

In an exemplary embodiment, a computer readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of any of the beam determining methods described above. The computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

In an exemplary embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of any of the beam determining methods described above.

With reference to fig. 8, a block diagram of a computer device that may be the present disclosure will now be described, the computer device including a computing unit 801 that may perform various appropriate actions and processes according to a computer program stored in a Read Only Memory (ROM) 802 or a computer program loaded from a storage unit 808 into a Random Access Memory (RAM) 803. In the RAM 803, various programs and data required for the operation of the computer device 800 can also be stored. The computing unit 801, the ROM 802, and the RAM 803 are connected to each other by a bus 804. An input/output (I/O) interface 805 is also connected to the bus 804.

Various components in computer device 800 are connected to I/O interface 805, including: an input unit 806, an output unit 807, a storage unit 808, and a communication unit 809. The input unit 806 may be any type of device capable of inputting information to the computer device 800, the input unit 806 may receive input numeric or character information and generate key signal inputs related to user settings and/or function control of the computer device 800, and may include, but is not limited to, a mouse, keyboard, touch screen, trackpad, trackball, joystick, microphone, and/or remote control. The output unit 807 may be any type of device capable of presenting information and may include, but is not limited to, a display, speakers, video/audio output user devices, vibrators, and/or printers. The storage unit 808 may include, but is not limited to, magnetic disks, optical disks. The communication unit 809 allows the computer device 800 to exchange information/data with other devices through a computer network, such as the internet, and/or various telecommunications networks, and may include, but is not limited to, modems, network cards, infrared communication devices, wireless communication transceivers and/or chipsets, such as bluetooth (TM) devices, wiFi devices, wiMax devices, cellular communication devices, and/or the like.

The computing unit 801 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of computing unit 801 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, etc. The calculation unit 801 performs the respective methods and processes described above, for example, a beam determination method. For example, in some embodiments, the beam determining method may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as the storage unit 808. In some embodiments, part or all of the computer program may be loaded and/or installed onto the computer device 800 via the ROM802 and/or the communication unit 809. When a computer program is loaded into RAM 803 and executed by computing unit 801, one or more steps of the beam determining method described above may be performed. Alternatively, in other embodiments, the computing unit 801 may be configured to perform the beam determination method by any other suitable means (e.g., by means of firmware).

Computer device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic elements for performing the beam determining methods described above.

Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A method of beam determination, for use with a network device, the method comprising:

2. The method of claim 1, wherein the time-frequency resources comprise: the uplink beam comprises a first index identifier, a second index identifier, a third index identifier and a fourth index identifier, wherein the first index identifier is an index identifier of an uplink carrier contained in the uplink beam, the second index identifier is an index identifier of a subcarrier contained in the uplink carrier, the third index identifier is an index identifier of a subframe contained in the subcarrier, and the fourth index identifier is an index identifier of a preset symbol contained in the subframe.

3. The method of claim 2, wherein the determining a target RA-RNTI based on the time-frequency resource and the target beam index identity comprises:

4. A method according to claim 3, characterized in that the method further comprises:

5. A method of beam determination, for use with a user device, the method comprising:

6. The method of claim 5, wherein the method further comprises:

7. A beam determining apparatus configured to a network device, the apparatus comprising:

8. A beam determining apparatus configured for a user device, the apparatus comprising:

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 4 when the computer program is executed, or the processor implements the steps of the method of any one of claims 5 to 6 when the computer program is executed.

10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program when executed by a processor implements the steps of the method of any of claims 1 to 4 or the computer program when executed by a processor implements the steps of the method of any of claims 5 to 6.