CN114402538B

CN114402538B - Beam forming method, communication device, readable storage medium and communication system

Info

Publication number: CN114402538B
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: 2023-05-02
Anticipated expiration: 2039-10-31
Also published as: WO2021081910A1; CN114402538A

Abstract

The application provides a beam forming method and a communication device, wherein network equipment performs beam splitting on the weight of a beam mThe method comprises the following steps:

n is the number of sub-carriers in the system bandwidth, W _m The base weight of the splitting beam with the index of m in the r splitting beams can be pre-stored in the network equipment, the weight of the downlink channel is determined based on the weight of the splitting beam, and finally the downlink channel is transmitted through the weight of the downlink channel, so that the power balance of the antenna at the transmitting side can be realized.

Description

Beam forming method, communication device, readable storage medium and communication system

Technical Field

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

Background

In long term evolution (long term evolution, LTE) systems, the physical downlink control channel (physical downlink control channel, PDCCH) is transmitted with a wide beam, such that PDCCH performance is limited. The split beam scheme is one solution to improve PDCCH channel performance. The split beam scheme uses the concept of beam forming, and can expand PDCCH channel resources and improve PDCCH channel capacity by the split beam designed in advance aiming at the multi-user problem.

When the split beam scheme is used, if the beam weight is not reasonably designed, the problem of power imbalance among antennas is caused, and the power imbalance among antennas causes the energy loss of the PDCCH and the coverage area shrinkage. Therefore, reasonable design of beam weights is required.

Disclosure of Invention

The application provides a beam forming method and a communication device, which can realize 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 splitting 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, and under the condition that q is more than 1, the q terminal devices can perform space division multiplexing, one or more splitting beams corresponding to each terminal device are provided, and the splitting beams corresponding to each terminal device belong to preset r splitting beams, wherein the weights of the splitting beams m meet the following conditions

k=1, 2, … … n, n is the number of subcarriers in the system bandwidth, W _m A base weight for a split beam with an index m of the r split beams; determining the weight of a downlink channel according to the weight of the split beams respectively corresponding to the q terminal devices; and transmitting the downlink channel according to the weight of the downlink channel.

It should be understood that the number of the devices,

may also be referred to as a cyclic delay factor.

Alternatively, the base weight 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 (physical downlink share channel, PDSCH).

According to the method provided by the application, the network equipment can offset the problem of unbalanced power among antennas in the vector superposition process caused by the phase influence by introducing a cyclic delay factor for the basic weight of the split beam, so that the power of the transmitting side antenna on the full bandwidth is equal, namely 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 of each antenna of the plurality of antennas corresponding to the split beam in the r split beams are equal.

By making the base weight amplitude (or amplitude) of each antenna the same, power sharing between antennas can be achieved, thereby facilitating the improvement of resource utilization.

With reference to the first aspect, in some implementations of the first aspect, in a case that the number of 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 corresponding to the multiple split beams corresponding to the terminal device.

With reference to the first aspect, in some implementations of the first aspect, the determining a weight of the downlink channel according to weights of 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.

With reference to the first aspect, in some implementations of the first aspect, before the determining weights 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 splitting beams according to the uplink reference signal sent by each terminal device in the plurality of terminal devices; determining a splitting beam 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 beams 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.

Optionally, the uplink reference signal may be a sounding reference signal (sounding reference signal, SRS).

In a second aspect, there is provided a communication device comprising means or units for performing the method of the first aspect or any 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 operable to execute instructions in the memory to cause the apparatus to perform the method of the first aspect or any one 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, there is provided a processor comprising: input circuit, output circuit and processing circuit. The processing circuit is configured to receive a signal via the input circuit and transmit a signal via the output circuit, such that the processor performs the method of the first aspect or any one 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 trigger, 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 output signal may be output by, for example and without limitation, a transmitter and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiments of the present application do not limit the specific implementation manner of the processor and the various circuits.

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

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor or the memory may be separate from the processor.

In a specific implementation process, the memory may be a non-transient (non-transitory) memory, for example, 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 procedure, e.g. transmitting the downstream channel, may be a procedure in which the downstream channel is output from the processor. Specifically, the signal output by the processing may be output to the transmitter, and the input signal received by the processor may be from the receiver. Wherein the transmitter and receiver may be collectively referred to as a transceiver.

The processing means in the fifth aspect may be a chip, and the processor may be implemented by hardware or by 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 in the processor, or may reside outside the processor, and exist separately.

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) which, when run 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 comprising the aforementioned network device. Optionally, the communication system may further comprise the aforementioned 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 solutions in the present application will be described below with reference to the accompanying drawings. By way of example, features or matters identified by dashed lines in the drawings to which embodiments of the present application relate may be understood as optional operations or optional constructions of the embodiments. The technical solution of the embodiment of the application can be applied to various communication systems, for example: 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), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) telecommunications systems, future fifth generation (5th generation,5G) systems or New Radio (NR), and the like.

To facilitate an understanding of the embodiments of the present application, a communication system suitable for use in the embodiments of the present application will be described in detail with reference to fig. 1. Fig. 1 shows a schematic diagram of a communication system suitable for the measurement reporting method and apparatus according to the embodiments 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 a plurality of antennas that may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals. In addition, each communication device may additionally include a transmitter chain and a receiver chain, each of which may include a plurality of components (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.) associated with the transmission and reception of signals, 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 a network device in the wireless communication system is a device deployed in a radio access network to provide wireless communication functionality for terminal devices. Network devices include, but are not limited to: an evolved Node B (eNB), a radio network controller (Radio Network Controller, RNC), a Node B (Node B, NB), a base station controller (Base Station Controller, BSC), a base transceiver station (Base Transceiver Station, BTS), a Home base station (Home evolved NodeB, or a Home Node B, HNB, for example), a Base Band Unit (BBU), an Access Point (AP) in a wireless fidelity (Wireless Fidelity, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission Point (transmission Point, TP), or a transmission receiving Point (transmission and reception Point, TRP), etc., may also be 5G, e.g., NR, a gNB in a system, or a transmission Point (TRP or TP), one or a group (including multiple antenna panels) of base stations in a 5G system, or may also be a network Node constituting a gNB or a transmission Point, such as a BaseBand Unit (BBU), or a Distributed Unit (DU), etc. The network device may also be a wireless controller in the context of a cloud wireless access network (cloud radio access network, CRAN). The network device may also be a wearable device or an in-vehicle device, etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include a Radio Unit (RU). The CU implements part of the functions of the gNB, the DU implements part of the functions of the gNB, for example, the CU implements functions of a radio resource control (radio resource control, RRC), a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer, and the DU implements functions of a radio link control (radio link control, RLC), a medium access control (media access control, MAC), and a Physical (PHY) layer. Since the information of the RRC layer may eventually become information of the PHY layer or be converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by the DU or by the du+cu. It is understood that the network device may be a CU node, or a DU node, or a device comprising a CU node and a DU node. In addition, the CU may be divided into network devices in an access network (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 appreciated that the terminal device in the wireless communication system may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, 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 (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. The embodiments of the present application are not limited to application scenarios.

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

S210, the network equipment turns on a beam splitting switch.

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

Alternatively, the beam splitting switch may be turned on at cell set-up, but this is not a limitation of the present application.

S220, the network equipment measures uplink reference signals sent by the plurality of terminal equipment and determines the received power of each terminal equipment on the plurality of split beams.

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

The uplink reference signal may be an SRS, for example, but the present application is not limited thereto. The received power may be a reference signal received power (reference signal receiving power, RSRP), but this is not a limitation of the present application.

The plurality of split beams are predetermined, and the base weights corresponding to the plurality of split beams are stored in the network device in advance. For example, the number of required split beams may be determined based on antenna morphology and coverage requirements. Typically, the coverage area of each splitting beam is 15 ° to 20 °, and if the current scene is a wide coverage 65 ° scene, the number of splitting beams can be determined to be 4 or 5. The following 4 split beams are illustrated as examples.

The base weight for each split beam may be determined based on the direction of each of the 4 split beams. The basic weights of the 4 split beams may be respectively:

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

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

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

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

Wherein W is ₀ For the base weight of split beam #0, W ₁ For splitting beamsBase weight of #1, W ₂ For the base weight of split beam #2, W ₃ Is the basis weight for split beam # 3.

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

Alternatively, the weight amplitude of each antenna may be the same, i.e.:

abs(aX)＝abs(bX)＝abs(cX)＝abs(dX)，

where x=0, 1, … …,15, abs (X) represents modulo X.

And S230, the network equipment determines the splitting wave beam corresponding to each terminal equipment according to the received power corresponding to each terminal equipment on the plurality of splitting wave beams.

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

Wherein the split beam corresponding to each terminal device belongs to the split beams. Taking the plurality of split beams as the 4 split beams (i.e., the split beams #0 to # 3), the received power on the split beams #0 to #3 corresponding to any one terminal device is RSRP0 to RSRP3, which is illustrated in S230.

For example, for a certain terminal device (e.g. denoted as terminal device # 1), the network device compares its received powers on each of the plurality of split beams to obtain a received power rank of: RSRP2> RSRP1> RSRP3> RSRP0. The network device then calculates the user beam isolation: signal to noise ratio (signal to interference ratio, SIR) =rsrp2/(rsrp1+rsrp3+rsrp0). If SIR is greater than or equal to Th (Th is a set threshold value)), 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 < Th, continue to calculate: sir= (rsrp2+rsrp1)/(rsrp0+rsrp3), if SIR is equal to or greater than Th, classifying the terminal device #1 as a combined 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 < Th, continue to calculate: sir= (rsrp2+rsrp1+rsrp3)/RSRP 0, if SIR is equal to or greater than Th, classifying the terminal device #1 as a combined 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 SIR < Th, the terminal device #1 is classified as a full joint user, i.e. the split beam corresponding to the terminal device #1 is the split beam #3, the split beam #2, the split beam #1 and the 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 present application is not limited to 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 protection scope of the present application.

S240, the network equipment determines p terminal equipment capable of carrying out space division multiplexing according to the splitting beams respectively corresponding to the terminal equipment, wherein p is more than or equal to 2. It will be appreciated that the p terminal devices belong to the plurality of terminal devices.

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

It can be understood that the space division multiplexing needs to be performed by p terminal devices, which needs to satisfy: p is less than or equal to 4, namely p is less than or equal to the number of split beams, and no intersection exists between the split beams corresponding to any two terminal devices in the p terminal devices.

In the following cases, p terminal apparatuses may perform space division multiplexing:

case one: p=r=4, and p terminal devices are in one-to-one correspondence with the r split beams. For example, the terminal device #0 corresponds to the split beam #0, the terminal device #1 corresponds to the split beams #1, … …, and the terminal device #3 corresponds to the split beam #3.

And a second case: p < r, and there is no intersection between the split beams corresponding to the p terminal devices.

For example, p=3, where the 3 terminal devices respectively correspond to one 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.

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

For another example, p=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 appreciated that S210-S240 are optional steps, i.e., the execution of S250 may not depend on S210-S240. Here, it means that the terminal device may perform S250 at an appropriate timing or condition without performing steps S210 to S240 before performing S250.

S250, the network equipment determines the weight of the splitting beams corresponding to the q terminal equipment respectively.

It should be understood that q terminal devices may be some or all of the p terminal devices described above, 1.ltoreq.q.ltoreq.r.

Wherein the weight of the split beam m satisfies the following formula:

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

May also be referred to as a cyclic delay factor.

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

W _m And the basic weight of the splitting beam with the index m in the r splitting beams is obtained. It should be understood that taking the value of m as an example here, the value of m may actually start from 1, or from any other integer.

It will be understood by those skilled in the art that if a certain terminal device corresponds to a plurality of split beams, the weight of the split beam corresponding to the terminal device satisfies the sum of the weights of the plurality of split beams. For example, if a certain terminal device corresponds to a beam with index of 0 and 1 in the r split beams, the weight of the beam corresponding to the terminal device satisfies W' ₀ +W' ₁ 。

When the split beam weight is designed into a formula, 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.

Taking an 8-antenna, 3 split beams (split beam #0, split beam #1, and split beam #2, respectively) as an example, the description will be made.

Split beam #0: w (W) ₀ ＝[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 per antenna can be expressed as equation two:

wherein, the liquid crystal display device comprises a liquid crystal display device, |x| ² Representing squaring the x-mode value. n=1, 2, … …, represents the nth antenna.

As can be seen from equation two, the 8 antennas are equal in power at full bandwidth.

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

Specifically, if q is greater than 1, the weight of the downlink channel satisfies the sum of the weights of the split beams respectively corresponding to the q terminal devices. If q=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, the terminal device #0 corresponds to the splitting beam #2, and the weight of the splitting beam #2 satisfies W' ₂ The terminal device #1 corresponds to the split beam #0 and the split beam #1, and weights of the split beam #0 and the split beam #1 satisfy W' ₀ +W' ₁ 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 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. Wherein, the scheduling information corresponding to the terminal equipment is control channel element (control channel element, CCE) information allocated to the terminal equipment by the network equipment.

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 by the network device to the q terminal devices.

Alternatively, the downlink control channel may be demodulated using quadrature phase shift keying (quadrature phase shift keying, QPSK), and the network device may adjust the power of the downlink control channel.

For example, different power can be allocated to different time-frequency positions during scheduling, and power is improved for terminal equipment with poor channel performance.

It should be understood that various aspects of the embodiments of the present application may be used in reasonable combination, and that the explanation or illustration of the various terms presented in the embodiments may be referred to or explained in the various embodiments without limitation.

It should also be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-described processes does not mean that the execution sequence is sequential, and the execution sequence of each process should be determined by its functions and inherent logic. The various numbers or serial numbers referred to in the above processes are merely for convenience of description and should not be construed as limiting the implementation of the embodiments of the present application.

The method provided in the embodiment of the present application is described in detail above with reference to fig. 2. The following describes in detail the apparatus provided in the embodiments of the present application 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 apparatus 1000 may include a transceiving unit 1100 and a processing unit 1200.

Wherein the transceiving unit 1100 may be used to transmit information to other devices. For example, a downlink channel is transmitted. The processing unit 1200 may be configured to perform part of processing of the apparatus, and determine a weight corresponding to the downlink channel.

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

Specifically, the communication apparatus 1000 may correspond to a network device in the method 200, the communication apparatus 1000 may include a unit for performing an 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.

For example, when the communication apparatus 1000 corresponds to the network device in the method 200, the processing unit 1200 is configured to determine weights of the split beams corresponding to q terminal devices respectively, where q is greater than or equal to 1 and less than or equal to r, r is greater than or equal to 2, and q is greater than 1, where the q terminal devices are capable of performing space division multiplexing, one or more split beams corresponding to each terminal device are provided, and the split beam corresponding to each terminal device belongs to r preset split beams, where the weights of the split beams m satisfy

n is the number of sub-carriers in the system bandwidth, W _m A basic weight of a split beam with an index 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 corresponding to the q terminal devices respectively; the transceiver unit 1100 is configured to send the downlink channel according to the weight of the downlink channel.

Alternatively, the base weight 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 magnitudes of the basic weights of each antenna in the r split beams in the plurality of antennas corresponding to the split beams are equal.

Optionally, under the condition that the number of the splitting beams corresponding to the terminal equipment is multiple, the weight of the splitting beam corresponding to the terminal equipment meets the sum of the weights corresponding to the splitting beams corresponding to the terminal equipment.

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 splitting beams according to an uplink reference signal sent by each terminal device in a plurality of terminal devices; determining a splitting beam 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 beams corresponding to each terminal device.

It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

It should also be appreciated that when the communication apparatus 1000 is a network device, the transceiver 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 apparatus 1000 is a chip configured in a network device, the transceiver unit 1100 in the communication apparatus 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, for example, may be a schematic structural diagram of a base station. The base station 3000 may be applied to the system shown in fig. 1, and perform 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 frequency unit (remote radio unit, RRU) 3100 and one or more baseband units (BBUs) (also 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 transceiver unit 3100 may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 3101 and a radio frequency unit 3102. Alternatively, the transceiving unit 3100 may include a receiving unit, which may correspond to a receiver (or receiver, receiving circuit), and a transmitting unit, which may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 3100 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals and baseband signals. The BBU 3200 portion is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 3100 and BBU 3200 may be physically disposed together, or may be physically disposed separately, i.e. a distributed base station.

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 performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on. For example, the BBU (processing unit) may be configured to control the base station to perform the operation procedures described in the above method embodiments with respect to the network device.

In one example, the BBU 3200 may be configured by one or more single boards, where the multiple single boards may support a single access radio access network (such as an LTE network) together, or may support radio access networks of different access systems (such as an LTE network, a 5G network, or other networks) respectively. 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 configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure 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 the processor may be separately provided on each board. It is also possible that multiple boards 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 embodiment. The operations or functions of the respective modules in the base station 3000 are respectively for implementing the corresponding procedures in the above-described method embodiments. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

The BBU 3200 described above may be used to perform actions described in the foregoing method embodiments as being implemented internally by a network device, while the RRU 3100 may be used to perform actions described in the foregoing method embodiments as being transmitted to or received from a terminal device by the network device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

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

According to the method provided in the embodiment of the present application, there is further provided a computer readable medium storing a program code, which when executed on a computer, causes the computer to perform the method on the network device side in the foregoing method embodiment.

According to the method provided by the embodiment of the application, the application further provides a system, which comprises one or more network devices. Optionally, the system may further comprise one or more of the aforementioned terminal devices.

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 communicating in any of the method embodiments described above.

It should be understood that the processing means may be a chip. For example, the processing means may be a field programmable gate array (field programmable gate array, FPGA), a general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, a system on chip (SoC), a central processor (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip. The disclosed methods, steps, and logic blocks 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 a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile 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. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus 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, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more 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 high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The network device in the above-mentioned respective apparatus embodiments corresponds entirely to the network device or the terminal device in the terminal device and method embodiments, the respective steps are performed by respective modules or units, for example, the steps of receiving or transmitting in the method embodiments are performed by the communication unit (transceiver), and other steps than transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. Wherein the processor 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 or distributed between 2 or more computers. Furthermore, 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 one another 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, various embodiments are not necessarily referring to the same embodiments 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 embodiments of the present application, the numbers "first" and "second" … are merely for distinguishing different objects, such as for distinguishing different network devices, and are not limited to the scope of the embodiments of the present application, but are not limited thereto.

It should also be understood that, in this application, "when …", "if" and "if" all refer to a corresponding process that the network element will make under some objective condition, are not limited in time, nor do it require that the network element be implemented with a judging action, nor are other limitations meant to be present.

It should also be understood that in this application, "at least one" means one or more, and "a plurality" means two or more.

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

It should also be understood that the term "and/or" is merely one association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Similar to the term "appearing in this application includes one or more of the following: the meaning of the expressions a, B, and C "generally means that the item may be any one of the following unless otherwise specified: a, A is as follows; b, a step of preparing a composite material; c, performing operation; 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 and C, C and C; c, C and C, and other combinations of a, B and C. The above is an optional entry for the item exemplified by 3 elements a, B and C, when expressed as "the item includes at least one of the following: a, B, … …, and X ", i.e. when there are more elements in the expression, then the entry to which the item is applicable can also be obtained according to the rules described above.

It will be understood that in the embodiments of the present application, the terminal device and/or the network device may perform some or all of the steps in the embodiments of the present application, these steps or operations are merely examples, and other operations or variations of various operations may also be performed in the embodiments of the present application. Furthermore, the various steps may be performed in a different order presented in accordance with embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present 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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The 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 may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely 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 think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to 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

1. A method of beamforming, comprising:

determining weights of splitting 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, under the condition that q is more than 1, the q terminal devices can perform space division multiplexing, one or more splitting beams corresponding to each terminal device are provided, the splitting beams corresponding to each terminal device belong to preset r splitting beams,

wherein the weight of the split beam m satisfies

m＝0,1，……r-1，

k=1, 2, … … n, n is the number of subcarriers in the system bandwidth, W _m A basic weight of a split beam with an index m in the r split beams is obtained;

determining the weight of a downlink channel according to the weight of the split beams respectively corresponding to the q terminal devices;

and sending the downlink channel according to the weight of the downlink channel.

2. The method of claim 1, wherein the downlink channel is a downlink control channel or a downlink data channel.

3. The method of claim 1 or 2, wherein the magnitudes of the basis weights in the r split beams are equal for each of the plurality of antennas corresponding to the split beam.

4. The method according to claim 1 or 2, wherein, in the case that the number of the split beams corresponding to the terminal device is plural, the weight of the split beam corresponding to the terminal device satisfies the sum of the weights respectively corresponding to the plural split beams corresponding to the terminal device.

5. The method according to claim 1 or 2, 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.

6. The method according to claim 1 or 2, wherein before said determining weights of the split beams respectively corresponding to the q terminal devices, the method further comprises:

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

Determining a splitting beam 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 beams corresponding to each terminal device.

7. A method according to claim 1 or 2, wherein the base weight is pre-stored in the network device.

8. A communication device, comprising:

a processing unit, configured to determine weights of splitting beams corresponding to q terminal devices respectively, where q is greater than or equal to 1 and less than or equal to r, r is greater than or equal to 2, and in case q is greater than 1, the q terminal devices can perform space division multiplexing, one or more splitting beams corresponding to each terminal device are provided, and the splitting beam corresponding to each terminal device belongs to r preset splitting beams,

wherein the weight of the split beam m satisfies

m＝0,1，……r-1，

the processing unit is further used for determining the weight of the downlink channel according to the weight of the split beams respectively corresponding to the q terminal devices;

and the receiving and transmitting unit is used for transmitting the downlink channel according to the weight of the downlink channel.

9. The apparatus of claim 8, wherein the downlink channel is a downlink control channel or a downlink data channel.

10. The apparatus of claim 8 or 9, wherein the magnitudes of the basis weights in the r split beams are equal for each of the plurality of antennas corresponding to the split beam.

11. The apparatus according to claim 8 or 9, wherein, in the case that the number of the split beams corresponding to the terminal device is plural, the weight of the split beam corresponding to the terminal device satisfies the sum of the weights respectively corresponding to the plural split beams corresponding to the terminal device.

12. The apparatus according to claim 8 or 9, wherein the processing unit is specifically configured to:

13. The apparatus of claim 8 or 9, wherein the processing unit is further configured to:

14. The apparatus according to claim 8 or 9, wherein the base weight is pre-stored in a network device.

15. A communication device, comprising: a processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the apparatus to perform the method of any one of claims 1 to 7.

16. 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.

17. A communication system comprising a communication device according to any one of claims 8 to 14 or claim 15.