CN114402538A

CN114402538A - Beam forming method and communication device

Info

Publication number: CN114402538A
Application number: CN201980100499.4A
Authority: CN
Inventors: 阳堃; 黄晖; 肖啸; 周景荣
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2022-04-26
Anticipated expiration: 2039-10-31
Also published as: WO2021081910A1; CN114402538B

Abstract

The application provides a beam forming method and a communication device, wherein a network device sets a weight value of a splitting beam m as:

n is the number of subcarriers in the system bandwidth, W_mThe basic weight of the split beam with index m in r split beams can be prestored in the network equipment, the weight of the downlink channel is determined based on the weight of the split beam, and finally the downlink channel is sent through the weight of the downlink channel, so that the power balance of the antenna at the sending side can be realized.

Description

Beam forming method and communication device

Technical Field

The present application relates to the field of communications, and in particular, to a beamforming method and a communications apparatus.

Background

In a Long Term Evolution (LTE) system, a Physical Downlink Control Channel (PDCCH) is transmitted using a wide beam, so that the performance of the PDCCH is restricted. The split beam scheme is a solution for improving the performance of the PDCCH channel. The splitting beam scheme uses a beam forming concept, and by means of the splitting beam designed in advance, the PDCCH channel resources can be expanded and the PDCCH channel capacity can be improved aiming at the multi-user problem.

When the split beam scheme is used, if the beam weight is not designed reasonably, the problem of power imbalance among antennas is caused, and the power imbalance among antennas causes the energy loss and coverage contraction of the PDCCH. Therefore, the beam weight needs to be designed reasonably.

Disclosure of Invention

The application provides a beam forming method and a communication device, which can realize the power balance of a transmitting side antenna by introducing a cyclic delay factor for a basic weight of a split beam.

In a first aspect, a beamforming method is provided, including: determining weights of split beams corresponding to q terminal devices respectively, wherein q is more than or equal to 1 and less than or equal to r, r is more than or equal to 2, the q terminal devices can perform space division multiplexing under the condition that q is more than 1, the split beam corresponding to each terminal device is one or more, and belongs to r preset split beams, wherein the weight of the split beam m meets the requirement of the weight of the split beam m

m＝0,1，……r-1，k1,2, … … n, n is the number of subcarriers in the system bandwidth, W_mThe basic weight of the split beam with the index of m in the r split beams; determining the weight of a downlink channel according to the weight of the split beam corresponding to the q terminal devices respectively; and sending the downlink channel according to the weight value of the downlink channel.

It should be understood that,

which may also be referred to as a cyclic delay factor.

Alternatively, the basic weight value may be pre-stored in the network device.

Optionally, the downlink channel is a downlink control channel or a downlink data channel. The downlink control channel may be a PDCCH, and the downlink data channel may be a Physical Downlink Shared Channel (PDSCH).

According to the method provided by the application, the network device introduces a cyclic delay factor for the basic weight of the split beam, so that the problem of power imbalance among antennas in the vector superposition process caused by phase influence can be solved, the power equality of the transmitting side antenna on the full bandwidth is realized, and the power balance of the transmitting side antenna is realized.

With reference to the first aspect, in some implementations of the first aspect, the magnitudes of the basic weights in the r split beams of each of the multiple antennas corresponding to the split beam are equal.

By making the basic weight value amplitude (or amplitude value) of each antenna the same, power sharing between antennas can be realized, thereby being beneficial to improving resource utilization rate.

With reference to the first aspect, in some implementation manners of the first aspect, when the number of the split beams corresponding to the terminal device is multiple, the weight of the split beam corresponding to the terminal device satisfies a sum of weights respectively corresponding to the multiple split beams corresponding to the terminal device.

With reference to the first aspect, in some implementation manners of the first aspect, the determining a weight of a downlink channel according to weights of split beams corresponding to the q terminal devices respectively includes: and determining the sum of the weights of the split beams corresponding to the q terminal devices as the weight of the downlink channel.

With reference to the first aspect, in some implementation manners of the first aspect, before the determining the weights of the split beams corresponding to the q terminal devices, the method further includes: determining the receiving power of each terminal device on the r split beams according to an uplink reference signal sent by each terminal device in the plurality of terminal devices; determining the split beams corresponding to each terminal device according to the receiving power of each terminal device on the r split beams; and determining the q terminal devices according to the splitting beam corresponding to each terminal device.

Based on the method, the terminal equipment capable of space division multiplexing can be determined. It should be understood that there is no intersection between the split beams corresponding to the terminal devices capable of space division multiplexing.

Optionally, the split beam corresponding to each terminal device may be determined according to the user isolation corresponding to the terminal device.

Alternatively, the uplink reference signal may be a Sounding Reference Signal (SRS).

In a second aspect, a communication device is provided, which comprises various modules or units for performing the method of the first aspect or any one of the possible implementations of the first aspect.

In a third aspect, an apparatus is provided that includes a processor. The processor is coupled to the memory and is operable to execute the instructions in the memory to cause the apparatus to perform the method of the first aspect or any of the possible implementations of the first aspect. Optionally, the apparatus further comprises a memory. Optionally, the apparatus further comprises an interface circuit, the processor being coupled to the interface circuit.

In a fourth aspect, a processor is provided, comprising: input circuit, output circuit and processing circuit. The processing circuitry is configured to receive signals via the input circuitry and to transmit signals via the output circuitry, such that the processor performs the method of the first aspect or any of the possible implementations of the first aspect.

In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the signal output by the output circuit may be output to and transmitted by a transmitter, for example and without limitation, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.

In a fifth aspect, a processing apparatus is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory and to receive signals via the receiver and transmit signals via the transmitter to perform the method of the first aspect or any of the possible implementations of the first aspect.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integral to the processor or provided separately from the processor.

In a specific implementation process, the memory may be a non-transitory (non-transitory) memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

It will be appreciated that the associated signal interaction process, e.g., transmitting the downlink channel, may be the process of outputting the downlink channel from the processor. In particular, the signal output by the processor may be output to a transmitter and the input signal received by the processor may be from a receiver. The transmitter and receiver may be collectively referred to as a transceiver, among others.

The processing device in the fifth aspect may be a chip, the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated with the processor, located external to the processor, or stand-alone.

In a sixth aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes a computer to perform the method of the first aspect or any of the possible implementations of the first aspect.

In a seventh aspect, a computer-readable medium is provided, which stores a computer program (which may also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method of the first aspect or any of the possible implementations of the first aspect.

In an eighth aspect, a communication system is provided, which includes the aforementioned network device. Optionally, the communication system may further include the foregoing terminal device.

Drawings

FIG. 1 is a schematic diagram of a communication system provided herein;

fig. 2 is a schematic flow chart of a method of beamforming provided herein;

FIG. 3 is a schematic block diagram of a communication device provided herein;

fig. 4 is a schematic block diagram of another apparatus provided herein.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings. For example, the features or contents identified by broken lines in the drawings related to the embodiments of the present application can be understood as optional operations or optional structures of the embodiments. The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a future fifth generation (5th generation, 5G) system, a New Radio (NR), or the like.

For the understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be described in detail with reference to fig. 1. Fig. 1 is a schematic diagram of a communication system suitable for a measurement reporting method and apparatus according to an embodiment of the present application. As shown in fig. 1, the communication system 100 may include at least one network device, such as the network device 110 shown in fig. 1; the communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in fig. 1. Network device 110 and terminal device 120 may communicate via a wireless link. Each communication device, such as network device 110 or terminal device 120, may be configured with multiple antennas, which may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals. Additionally, each communication device can additionally include a transmitter chain and a receiver chain, each of which can comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art. Thus, network device 110 and terminal device 120 may communicate via multiple antenna techniques.

It should be understood that the network device in the wireless communication system is a device deployed in a radio access network to provide wireless communication functions for terminal devices. Network devices include, but are not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (Base band Unit, BBU), Access Point (AP) in Wireless Fidelity (WIFI) system, etc., and may also be 5G, such as NR, gbb in system, or TRP, transmission Point (TRP or TP), one or a group of antennas (including multiple antennas, NB, or a transmission panel) of a Base Station in 5G system, such as a baseband unit (BBU), or a Distributed Unit (DU), etc. The network device may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device may also be a wearable device or a vehicle mounted device, etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). A CU implements part of the function of a gNB, and a DU implements part of the function of the gNB, for example, the CU implements the function of a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, and the DU implements the function of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or the DU + CU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in a Radio Access Network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

It should also be understood that terminal equipment in the wireless communication system may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios.

Fig. 2 is a schematic flow chart of a beamforming method provided in the present application. The steps shown in FIG. 2 will be explained below. It should be understood that, in the method embodiments described below, only the network device and the terminal device are taken as examples of execution subjects, and the network device may also be replaced by a chip configured in the network device, and the terminal device may also be replaced by a chip configured in the terminal device.

S210, the network equipment starts a beam splitting switch.

For example, the beam splitting switch may be implemented by software, or may be implemented by hardware, which is not limited in this application.

Optionally, the beam splitting switch may be turned on when the cell is established, but the present application does not limit this.

And S220, the network device measures the uplink reference signals sent by the plurality of terminal devices, and determines the receiving power of each terminal device on the plurality of split beams.

For example, the network device may measure uplink reference signals sent by all terminal devices in a cell, or may measure uplink reference signals sent by a plurality of terminal devices to be scheduled.

For example, the uplink reference signal may be an SRS, but the present application does not limit this. The received power may be a Reference Signal Receiving Power (RSRP), but is not limited thereto.

The split beams are predetermined, and the basic weights corresponding to the split beams are stored in the network device in advance. For example, the number of split beams required may be determined according to the antenna configuration and coverage requirements. Generally, the coverage range of each split beam is 15 ° to 20 °, and if the current scene is a wide coverage 65 ° scene, the number of split beams can be determined to be 4 or 5. The following 4 split beams are exemplified.

According to the direction of each split beam in the 4 split beams, the basic weight of each split beam can be determined. The basic weights of the 4 split beams may be:

split beam # 0: w₀＝[a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15]

Split beam # 1: w₁＝[b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 b10 b11 b12 b13 b14 b15]

Split beam # 2: w₂＝[c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 c11 c12 c13 c14 c15]

Split beam # 3: w₃＝[d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15]

Wherein, W₀Is the basic weight, W, of the split beam #0₁Is the basic weight, W, of the split beam #1₂Is the basic weight, W, of the split beam #2₃Is the basis weight for split beam # 3.

It should be appreciated that in the above example, each split beam is obtained by weighting 16 antennas.

Optionally, the magnitude of the weight of each antenna may be the same, i.e.:

abs(aX)＝abs(bX)＝abs(cX)＝abs(dX)，

where X ═ 0,1, … …, 15, abs (X) denotes modulo X.

And S230, the network device determines the splitting beam corresponding to each terminal device according to the receiving power of each terminal device on the plurality of splitting beams.

By making the basic weight amplitudes of each antenna the same, power sharing between antennas can be realized, thereby facilitating improvement of resource utilization rate.

And splitting beams corresponding to each terminal device belong to the plurality of splitting beams. Taking the plurality of split beams as the 4 split beams (i.e., split beam #0 to split beam #3), the receiving powers on the split beam #0 to split beam #3 corresponding to any terminal device are RSRP0 to RSRP3, respectively, as an example, S230 is illustrated.

For example, for a certain terminal device (for example, denoted as: terminal device #1), after comparing the received powers of the network device on each of the split beams in the plurality of split beams, the network device obtains the received powers in the order as: RSRP2> RSRP1> RSRP3> RSRP 0. Then, the network device calculates the user beam isolation: signal to interference ratio (SIR) RSRP2/(RSRP1+ RSRP3+ RSRP 0). If SIR is greater than or equal to Th (Th is a set threshold), the terminal device #1 is classified as an independent user of the split beam #2, that is, the split beam corresponding to the terminal device #1 is the split beam # 2. If SIR is less than Th, continue calculating: if the SIR is greater than or equal to Th, (RSRP2+ RSRP1)/(RSRP0+ RSRP3), the terminal device #1 is classified as a joint user of the split beam #2 and the split beam #1, that is, the split beam corresponding to the terminal device #1 is the split beam #1 and the split beam # 2. If SIR is less than Th, continue calculating: if the SIR is greater than or equal to Th, (RSRP2+ RSRP1+ RSRP3)/RSRP0, the terminal device #1 is classified as a joint user of the split beam #3, the split beam #2, and the split beam #1, that is, the split beam corresponding to the terminal device #1 is the split beam #3, the split beam #2, and the split beam # 1. If the SIR is less than Th, the terminal device #1 is classified as a full combination user, that is, the split beam corresponding to the terminal device #1 is split beam #3, split beam #2, split beam #1, and split beam # 0.

It should be understood that the manner of determining the split beam corresponding to the terminal device described herein is merely an exemplary illustration, and the application does not limit how to determine the split beam corresponding to the terminal device, and any reasonable manner of determining the split beam corresponding to the terminal device should fall within the scope of the application.

S240, the network device determines p terminal devices capable of performing space division multiplexing according to the split beams respectively corresponding to the terminal devices, wherein p is larger than or equal to 2. It should be understood that the p terminal devices belong to the plurality of terminal devices.

The explanation is also given by taking the plurality of split beams as the 4 split beams, that is, split beam #0 to split beam #3, and taking the p terminal devices as terminal device #0, terminal device #1, … …, and terminal device # p-1 as examples.

It can be understood that p terminal devices need to perform space division multiplexing, and need to satisfy: p is less than or equal to 4, that is, p is less than or equal to the number of the splitting beams, and no intersection exists between the splitting beams corresponding to any two terminal devices in the p terminal devices.

In several cases, p terminal apparatuses can perform space division multiplexing:

the first condition is as follows: and p-r-4, wherein the p terminal devices correspond to the r splitting beams one by one. For example, terminal device #0 corresponds to split beam #0, terminal device #1 corresponds to split beams #1 and … …, and terminal device #3 corresponds to split beam # 3.

Case two: and p is less than r, and no intersection exists between the split beams corresponding to the p terminal devices.

For example, p is 3, the 3 terminal devices respectively correspond to one of the 4 splitting beams, for example, terminal device #0 corresponds to splitting beam #0, terminal device #1 corresponds to splitting beam #1, and terminal device #2 corresponds to splitting beam # 2.

For another example, p is 3, one terminal device in the 3 terminal devices corresponds to one of the 4 split beams, one terminal device corresponds to another of the 4 split beams, and another terminal device corresponds to the remaining two of the 4 split beams. For example, terminal device #0 corresponds to split beam #0, terminal device #1 corresponds to split beam #1, and terminal device #2 corresponds to split beam #2 and split beam # 3.

For another example, p is 2, the 2 terminal devices may respectively correspond to one of the 4 split beams, or the 2 terminal devices respectively correspond to 2 split beams, or one of the terminal devices corresponds to 1 split beam, and the other terminal device corresponds to 3 split beams.

It should be understood that S210-S240 are optional steps, i.e., S250 may be performed independently of S210-S240. It means here that the terminal device can perform S250 at an appropriate timing or condition without performing steps S210 to S240 all before performing S250.

And S250, the network equipment determines the weight values of the split beams corresponding to the q terminal equipment respectively.

It should be understood that q terminal devices may be some or all of the above-mentioned p terminal devices, with 1 ≦ q ≦ r.

Wherein, the weight of the splitting wave beam m satisfies the following formula one:

it should be understood that the weight of the split beam m may also be referred to as the weight of the split beam m corresponding to the subcarrier k.

Which may also be referred to as a cyclic delay factor.

In the above formula, k is 1,2, … … n, and n is the number of subcarriers in the system bandwidth, or n may also be referred to as the number of subcarriers supported by the system bandwidth. For example, when the system bandwidth is 20MHz, n is 1200.

W _mAnd the basic weight of the split beam with the index of m in the r split beams. It should be understood that, in this document, the value of m is started from 0, and in fact, the value of m may also be started from 1, or started from any other integer.

As can be understood by those skilled in the art, if a certain terminal device corresponds to multiple split beams, the weight of the split beam corresponding to the terminal device satisfies the sum of the weights of the multiple split beams. For example, if a certain terminal device corresponds to beams with indexes 0 and 1 in the r cleaved beams, the weight of the beam corresponding to the terminal device satisfies W'₀+W′ ₁。

The splitting beam weight is designed to be formula one, so that the full-band power of the transmitting side antenna can be ensured to be equal, and the power balance of the transmitting side antenna is realized.

The explanation will be given taking 8 antennas and 3 split beams (split beam #0, split beam #1, and split beam #2, respectively) as an example.

Split beam # 0: w₀＝[1 1 1 1 1 1 1 1]

W′ ₀＝W′ ₀(k)＝[1 1 1 1 1 1 1 1]

Split beam # 1:

split beam # 2:

the full-band power of each antenna can be expressed as formula two:

wherein | x | Y calculation²Which means squaring the x-modulus. n is 1,2, … … 8, and denotes the nth antenna.

It can be seen from equation two that the power of the 8 antennas is equal at the full bandwidth.

And S260, the network equipment determines the weight of the downlink channel according to the weight of the split beam corresponding to the q terminal equipments respectively.

Specifically, if q is greater than 1, the weight of the downlink channel satisfies the sum of the weights of the split beams corresponding to the q terminal devices, respectively. And if q is 1, the weight of the downlink channel is the weight of the split beam corresponding to the terminal device.

For example, the q terminal devices are terminal device #0 and terminal device #1, terminal device #0 corresponds to split beam #2, and weight of split beam #2 satisfies W'₂The terminal device #1 corresponds to the split beam #0 and the split beam #1, and the weights of the split beam #0 and the split beam #1 satisfy W'₀+W′ ₁And then the weight of the downlink channel satisfies W'₀+W′ ₁+W′ ₂。

The downlink channel may be a downlink control channel (e.g., PDCCH), a downlink data channel (e.g., PDSCH), a downlink broadcast channel, etc., which is not limited in this application.

And S270, the network equipment sends the downlink channel according to the weight value of the downlink channel.

If the downlink channel is a downlink control channel, the downlink channel may carry scheduling information corresponding to the q terminal devices, respectively. The scheduling information corresponding to the terminal device is Control Channel Element (CCE) information allocated to the terminal device by the network device.

If the downlink channel is a downlink data channel, the downlink channel may carry data corresponding to the q terminal devices, that is, data transmitted to the q terminal devices by the network device.

Alternatively, the downlink control channel may use Quadrature Phase Shift Keying (QPSK) demodulation, and the network device may adjust the power of the downlink control channel.

For example, different powers may be allocated to different time-frequency positions during scheduling, and power may be increased for a terminal device with a poor channel performance.

It should be understood that the various aspects of the embodiments of the present application can be reasonably combined and explained, and the explanation or explanation of the various terms appearing in the embodiments can be mutually referred to or explained in the various embodiments, which is not limited.

It should also be understood that, in the various embodiments of the present application, the size of the serial number of each process described above does not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of each process. The various numbers or serial numbers involved in the above processes are merely used for convenience of description and should not be construed as limiting the implementation processes of the embodiments of the present application in any way.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 2. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 3 to 5.

Fig. 3 is a schematic block diagram of a communication device provided in an embodiment of the present application. As shown in fig. 3, the communication device 1000 may include a transceiving unit 1100 and a processing unit 1200.

The transceiving unit 1100 may be configured to transmit information to other apparatuses. Such as transmitting a downlink channel. The processing unit 1200 may be configured to perform partial processing of the apparatus and determine a weight corresponding to a downlink channel.

The communication apparatus 1000 may correspond to the network device in the foregoing method embodiment, and may specifically be the network device or a chip configured in the network device, for example.

Specifically, the communication apparatus 1000 may correspond to the network device in the method 200, the communication apparatus 1000 may include a unit for performing the operation performed by the network device in the method 200, and each unit in the communication apparatus 1000 is respectively for implementing the operation performed by the network device in the corresponding method.

Illustratively, in the communication device 100When 0 corresponds to the network device in the method 200, the processing unit 1200 is configured to determine weights of split beams corresponding to q terminal devices, q is greater than or equal to 1 and is less than or equal to r, r is greater than or equal to 2, the q terminal devices can perform space division multiplexing when q is greater than 1, the split beam corresponding to each terminal device is one or more, and the split beam corresponding to each terminal device belongs to r preset split beams, where the weight of the split beam m satisfies that

m is 0,1, … … r-1, k is 1,2, … … n, n is the number of sub-carriers in the system bandwidth, W is_mThe basic weight of the split beam with the index of m in the r split beams is obtained; the processing unit 1200 is further configured to determine a weight of a downlink channel according to weights of split beams respectively corresponding to the q terminal devices; the transceiver unit 1100 is configured to transmit the downlink channel according to the weight of the downlink channel.

Alternatively, the basis weights may be pre-stored in the communication device 1000.

Optionally, the downlink channel is a downlink control channel or a downlink data channel.

Optionally, the amplitudes of the basic weights of each of the multiple antennas corresponding to the split beam in the r split beams are equal.

Optionally, when the number of the splitting beams corresponding to the terminal device is multiple, the weight of the splitting beam corresponding to the terminal device satisfies a sum of weights corresponding to the multiple splitting beams corresponding to the terminal device, respectively.

Optionally, the processing unit 1200 is specifically configured to: and determining the sum of the weights of the split beams corresponding to the q terminal devices as the weight of the downlink channel.

Optionally, the processing unit 1200 is further configured to: determining the receiving power of each terminal device on the r split beams according to an uplink reference signal sent by each terminal device in a plurality of terminal devices; determining splitting beams corresponding to each terminal device according to the receiving power of each terminal device on the r splitting beams; and determining the q terminal devices according to the splitting beam corresponding to each terminal device.

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

It should also be understood that when the communication apparatus 1000 is a network device, the transceiving unit 1100 in the communication apparatus 1000 may correspond to the transceiver 3200 in the network device 3000 shown in fig. 4, and the processing unit 1200 in the communication apparatus 1000 may correspond to the processor 3100 in the network device 3000 shown in fig. 4.

It should also be understood that when the communication device 1000 is a chip configured in a network device, the transceiver unit 1100 in the communication device 1000 may be an input/output interface.

Fig. 4 is a schematic structural diagram of a network device provided in the embodiment of the present application, which may be a schematic structural diagram of a base station, for example. The base station 3000 can be applied to the system shown in fig. 1, and performs the functions of the network device in the above method embodiment. As shown, the base station 3000 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 3100 and one or more baseband units (BBUs) (which may also be referred to as Distributed Units (DUs)) 3200. The RRU 3100 may be referred to as a transceiver unit or a communication unit, and corresponds to the transceiver unit 1100 in fig. 3. Alternatively, the transceiving unit 3100 may also be referred to as a transceiver, transceiving circuit, or transceiver, etc., which may comprise at least one antenna 3101 and a radio frequency unit 3102. Alternatively, the transceiving unit 3100 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 3100 part is mainly used for transceiving radio frequency signals and converting radio frequency signals to baseband signals. The BBU 3200 section is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 3100 and the BBU 3200 may be physically disposed together or may be physically disposed separately, i.e. distributed base stations.

The BBU 3200 is a control center of the base station, and may also be referred to as a processing unit, and may correspond to the processing unit 1200 in fig. 3, and is mainly used for completing baseband processing functions, such as channel coding, multiplexing, modulating, spreading, and the like. For example, the BBU (processing unit) can be used to control the base station to execute the operation flow related to the network device in the above method embodiment.

In an example, the BBU 3200 may be formed by one or more boards, and the boards may collectively support a radio access network of a single access system (e.g., an LTE network), or may respectively support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks). The BBU 3200 also includes a memory 3201 and a processor 3202. The memory 3201 is used to store necessary instructions and data. The processor 3202 is used for controlling the base station to perform necessary actions, for example, for controlling the base station to execute the operation flow related to the network device in the above method embodiment. The memory 3201 and processor 3202 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

It should be understood that the base station 3000 shown in fig. 4 can implement the various processes related to the network device in the foregoing method embodiments. The operations or functions of the modules in the base station 3000 are respectively to implement the corresponding flows in the above method embodiments. Reference may be made specifically to the description of the above method embodiments, and a detailed description is appropriately omitted herein to avoid redundancy.

BBU 3200 as described above can be used to perform actions described in previous method embodiments as being implemented internally by a network device, while RRU 3100 can be used to perform actions described in previous method embodiments as being sent by or received from a terminal device by a network device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method on the terminal device side in any of the method embodiments described above.

According to the method provided by the embodiment of the present application, the present application further provides a computer-readable medium, which stores a program code, and when the program code runs on a computer, the computer is caused to execute the method on the network device side in the foregoing method embodiment.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the foregoing one or more network devices. Optionally, the system may further include one or more of the terminal devices described above.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform the method of communication in any of the above method embodiments.

It should be understood that the processing means may be a chip. For example, the processing device may be a Field Programmable Gate Array (FPGA), a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a microcontroller (micro controller unit, MCU), a Programmable Logic Device (PLD) or other integrated chip. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

The network device in the foregoing device embodiments completely corresponds to the terminal device and the network device or the terminal device in the method embodiments, and the corresponding module or unit executes the corresponding steps, for example, the communication unit (transceiver) executes the steps of receiving or transmitting in the method embodiments, and other steps besides transmitting and receiving may be executed by the processing unit (processor). The functions of the specific elements may be referred to in the respective method embodiments. The number of the processors may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process or thread of execution and a component may be localized on one computer and distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, or across a network such as the internet with other systems by way of the signal).

It should be appreciated that reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the various embodiments are not necessarily referring to the same embodiment throughout the specification. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It should be understood that, in the embodiment of the present application, the numbers "first" and "second" … are only used for distinguishing different objects, such as for distinguishing different network devices, and do not limit the scope of the embodiment of the present application, and the embodiment of the present application is not limited thereto.

It should also be understood that, in this application, "when …", "if" and "if" all refer to a network element that performs the corresponding process under certain objective circumstances, and are not time-critical, nor do they require certain deterministic actions to be performed by the network element, nor do they imply that other limitations exist.

It is also understood that, in the present application, "at least one" means one or more, "a plurality" means two or more.

It should also be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

It should also be understood that the term "and/or" herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Items appearing in this application as similar to "include one or more of the following: the meaning of the expressions A, B, and C "generally means that the item may be any of the following, unless otherwise specified: a; b; c; a and B; a and C; b and C; a, B and C; a and A; a, A and A; a, A and B; a, A and C, A, B and B; a, C and C; b and B, B, B and C, C and C; c, C and C, and other combinations of A, B and C. The above description is made by taking 3 elements of a, B and C as examples of optional items of the item, and when the expression "item" includes at least one of the following: a, B, … …, and X ", i.e., more elements in the expression, then the items to which the item may apply may also be obtained according to the aforementioned rules.

It is understood that, in the embodiments of the present application, a terminal device and/or a network device may perform some or all of the steps in the embodiments of the present application, and these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or various modifications of the operations. Further, the various steps may be performed in a different order presented in the embodiments of the application, and not all operations in the embodiments of the application may be performed.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for beamforming, comprising:

determining the weight of split beams corresponding to q terminal devices respectively, wherein q is more than or equal to 1 and less than or equal to r, r is more than or equal to 2, the q terminal devices can perform space division multiplexing under the condition that q is more than 1, the split beam corresponding to each terminal device is one or more, and belongs to r preset split beams,

wherein the weight of the split beam m satisfies

k is 1,2, … … n, n is the number of sub-carriers in the system bandwidth, W_mThe basic weight of the split beam with the index of m in the r split beams is obtained;

determining the weight of a downlink channel according to the weight of the split beam corresponding to each of the q terminal devices;

and sending the downlink channel according to the weight value of the downlink channel.
The method of claim 1, wherein the downlink channel is a downlink control channel or a downlink data channel.
The method according to claim 1 or 2, wherein the magnitude of the basis weight in the r split beams for each of the plurality of antennas corresponding to the split beam is equal.
The method according to any one of claims 1 to 3, wherein when there are a plurality of split beams corresponding to the terminal device, the weight of the split beam corresponding to the terminal device satisfies a sum of weights corresponding to the plurality of split beams corresponding to the terminal device, respectively.
The method according to any one of claims 1 to 4, wherein the determining the weight of the downlink channel according to the weights of the split beams respectively corresponding to the q terminal devices includes:

and determining the sum of the weights of the split beams corresponding to the q terminal devices as the weight of the downlink channel.
The method according to any one of claims 1 to 5, wherein before the determining the weight values of the split beams respectively corresponding to the q terminal devices, the method further includes:

determining the receiving power of each terminal device on the r split beams according to an uplink reference signal sent by each terminal device in a plurality of terminal devices;

determining splitting beams corresponding to each terminal device according to the receiving power of each terminal device on the r splitting beams;

and determining the q terminal devices according to the splitting beam corresponding to each terminal device.
The method according to any of claims 1 to 6, wherein the base weights are pre-stored in a network device.
A communications apparatus, comprising:

the processing unit is used for determining the weight values of the splitting beams corresponding to q terminal devices respectively, q is more than or equal to 1 and less than or equal to r, r is more than or equal to 2, under the condition that q is more than 1, the q terminal devices can carry out space division multiplexing, the splitting beam corresponding to each terminal device is one or more, and the splitting beam corresponding to each terminal device belongs to r preset splitting beams,

wherein the weight of the split beam m satisfies

k is 1,2, … … n, n is the number of sub-carriers in the system bandwidth, W_mThe basic weight of the split beam with the index of m in the r split beams is obtained;

the processing unit is further configured to determine a weight of a downlink channel according to weights of split beams respectively corresponding to the q terminal devices;

and the receiving and sending unit is used for sending the downlink channel according to the weight value of the downlink channel.
The apparatus of claim 8, wherein the downlink channel is a downlink control channel or a downlink data channel.
The apparatus according to claim 8 or 9, wherein the magnitude of the basic weight in the r split beams is equal for each of the plurality of antennas corresponding to the split beam.
The apparatus according to any one of claims 8 to 10, wherein when there are a plurality of split beams corresponding to the terminal device, a weight of the split beam corresponding to the terminal device satisfies a sum of weights respectively corresponding to the plurality of split beams corresponding to the terminal device.
The apparatus according to any one of claims 8 to 11, wherein the processing unit is specifically configured to:

and determining the sum of the weights of the split beams corresponding to the q terminal devices as the weight of the downlink channel.
The apparatus of any of claims 8 to 12, wherein the processing unit is further to:

determining the receiving power of each terminal device on the r split beams according to an uplink reference signal sent by each terminal device in a plurality of terminal devices;

determining splitting beams corresponding to each terminal device according to the receiving power of each terminal device on the r splitting beams;

and determining the q terminal devices according to the splitting beam corresponding to each terminal device.
The apparatus according to any of claims 8 to 13, wherein the base weights are pre-stored in a network device.
A communications apparatus, comprising: a processor coupled with a memory, the memory to store a program or instructions that, when executed by the processor, cause the apparatus to perform the method of any of claims 1 to 7.
A readable storage medium having stored thereon a computer program or instructions, which when executed cause a computer to perform the method of any of claims 1 to 7.
A computer program product comprising computer program instructions that cause a computer to perform: the method of any one of claims 1 to 7.
A communication system comprising a communication device according to any of claims 8 to 14 or claim 15.