CN109565306A

CN109565306A - A kind of method and apparatus of determining MIMO layer number

Info

Publication number: CN109565306A
Application number: CN201780048601.1A
Authority: CN
Inventors: 程勇; 方平; 李小仙; 庞高昆
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-23
Filing date: 2017-07-27
Publication date: 2019-04-02
Anticipated expiration: 2037-07-27
Also published as: WO2018232832A1; CN109565306B

Abstract

A kind of method and apparatus of determining MIMO layer number, this method comprises: terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling, the K network equipment is corresponding to be less than or equal to the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling；When terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than or equal to the first preset value, it will be sent to i-th of network equipment by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the first preset value；When terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to the second preset value, it will be sent to i-th of network equipment by the modulated second message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the second preset value.

Description

A kind of method and apparatus of determining MIMO layer number

This application claims Patent Office of the People's Republic of China was submitted on 06 23rd, 2017, application No. is 201710488274.3, apply entitled " a kind of method and apparatus of determining MIMO layer number " Chinese patent application priority, entire contents are hereby incorporated by reference in the application.

Technical field

This application involves field of communication technology, in particular to a kind of method and apparatus of determining MIMO layer number.

Background technique

The third generation (3G) and the extensive commercialization of forth generation (4G) mobile communication system significantly improve exchanging, facilitating people's lives for people.In order to meet the needs of user's ever-increasing wireless data communication, international communication standards tissue, such as, third generation partner program (third generation partnership project, 3GPP), the 5th generation (5G) mobile communication system standard of formulating is had begun.In order to improve system bandwidth and message transmission rate, 5G mobile communication system considers to use high frequency (high frequency, HF) carrier wave frequency range, for example, using the frequency spectrum of 30GHz or so (such as 24.25GHz -52.6GHz) and 70GHz or so (such as 66GHz -86GHz).

Although high-frequency band can provide very high system bandwidth, the propagation path loss of high-frequency signal is very big, limits the transmission range of high-frequency signal, and then limits the coverage area of the network equipment using high-frequency band.In order to reduce the propagation loss of high-frequency signal and increase the transmission range of high-frequency signal, beam forming (beam forming) technology and extensive multiple-input and multiple-output (multiple-input multiple-output, MIMO) technology will be will use in 5G communication system.

The diffraction performance of high-frequency signal (for example, radio wave signal of 70GHz) is poor, is easy to cause high frequency signal transmission to fail because of being blocked.Therefore, high-frequency band is more suitable for using under visual (line-of-sight, LoS) scene.However, under LoS scene, due to lacking Multipath Transmission, may cause the network equipment (such as, send and receive point (transmission and reception point, TRP)) and terminal (for example, 5G user equipment (User Equipment, UE the channel matrix between)) is low-rank, therefore limits the MIMO layer number (number of MIMO layers) that the network equipment is terminal scheduling.In order to make full use of more antennas in terminal and then provide higher message transmission rate (for example, multilayer MIMO transmission) for terminal, the mode that can use multiple network equipment joint transmissions sends data to a terminal.It joins together to send data to a UE as shown in Figure 1, two TRP can be used.Since multiple TRP are separated on spatial position, therefore the channel variance situation between each TRP and terminal is incoherent, space diversity gain is brought to terminal in this way, while the MIMO transmission of multilayer can be provided for terminal, significantly improves message transmission rate.

But when sending data to a terminal using multiple network equipments, multiple network equipments need to coordinate in scheduling of resource, thus will increase the expense of backhaul link (backhaul).Here resource may include time domain, frequency domain, code domain and airspace resource.Especially in the case where non-ideal backhaul link (non-ideal backhaul), due to delay, it is likely that cannot achieve the coordination of scheduler (scheduler) rank.Therefore, preferably each network equipment independently carries out scheduling of resource.But, since each network equipment independently carries out scheduling of resource, for a terminal, multiple network equipments to the summation of the MIMO layer number of the terminal scheduling may be more than respectively the maximum value of MIMO layer number that the terminal can be handled on identical running time-frequency resource or on partly overlapping running time-frequency resource, lead to the terminal processes not and be transferred to all MIMO layers of the terminal.

Two kinds of solutions are given in the prior art to be briefly described below by taking UE1 as an example.

Scheme 1: in order to avoid multiple network equipments are more than the maximum value for the MIMO layer number that a UE1 can be handled for the summation of the UE1 MIMO layer number independently dispatched, the MIMO layer number that each network equipment most multipotency is dispatched to UE1 can be configured by upper layer (for example, L3/RRC) static (static) or semi-static (semi-static).But this configuration mode cannot make full use of the case where channel variation to maximize system spectral efficiency and improve user data transmission rate.

Scheme 2: when UE1 has found that multiple network equipments are more than the maximum value for the MIMO layer number that itself can be handled for the summation of the UE1 MIMO layer number independently dispatched, UE1 just abandons processing a portion MIMO layer.But it is likely to cause UE1 that can not be correctly decoded a code word (codeword) in this way, while can also waste down channel resources.

Summary of the invention

The application provides a kind of method and apparatus of determining MIMO layer number, the summation for the MIMO layer number independently dispatched to solve the problem of multiple network equipments for terminal is more than all MIMO layers that the maximum value for the MIMO layer number that the terminal can be handled has led to the terminal processes not and be transferred to the terminal.

In a first aspect, the application provides a kind of method of determining MIMO layer number, comprising: terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling；When terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than or equal to the first preset value, terminal will be sent to i-th of network equipment by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the first preset value；When terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to the second preset value, terminal will be sent to i-th of network equipment by the modulated second message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the second preset value.Wherein, the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, and K is the positive integer more than or equal to 2.The corresponding MIMO layer number adjustment amount of i-th of network equipment is the MIMO layer number that terminal i-th of network equipment according to known to terminal is terminal scheduling and i-th of network equipment can be the MIMO layer number maximum value determination of terminal scheduling, first preset value is positive integer, second preset value is negative integer, i-th of network equipment is any network equipment in the K network equipment, and i is less than or equal to the positive integer of K.

Therefore, using method provided by the present application, terminal can to avoid backhaul link expense and reduce requirement to backhaul link low latency, solved the problems, such as the terminal processes not and be transferred to all MIMO layers of the terminal.And uplink communication expense not will increase by the MIMO layer number that the above method instruction network equipment is adjusted to terminal scheduling.

In a kind of possible design, terminal be determined as terminal provide service the K network equipment it is corresponding can be terminal scheduling MIMO layer number maximum value after, when terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than the second preset value and when less than the first preset value, terminal will be sent to i-th of network equipment by the modulated first message of the second modulation system or second message, so that i-th of network equipment is not adjusted to the MIMO layer number of terminal scheduling.

Therefore, using method provided by the present application, when the network equipment does not need the MIMO layer number for being adjusted to terminal scheduling, terminal notifies the network equipment to be adjusted to for the MIMO layer number of terminal scheduling by changing modulation system.

In a kind of possible design, when first message is ACK message, second message can be NACK message, and when first message is NACK message, second message is ACK message；When the first modulation system is binary phase shift keying BPSK, the second modulation system can be orthogonal binary phase shift keying QBPSK, when the first modulation system is When QBPSK, the second modulation system is BPSK.

Therefore, first message, second message are directed in the application, the first modulation system and the second modulation system provide the combination of a variety of implementations, and implementation is flexible and convenient.

In a kind of possible design, terminal be determined as terminal provide service the K network equipment it is corresponding can for terminal scheduling MIMO layer number maximum value when, it is that the reference signal that terminal is sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be terminal scheduling MIMO layer number maximum value；If terminal determines that the K network equipment is corresponding can be greater than the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm for terminal to be the MIMO layer number maximum value of terminal scheduling.

Therefore, using method provided by the present application, the problem of ensure that the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that is capable of handling of terminal for the summation of the MIMO layer number maximum value of terminal scheduling, be able to solve terminal processes not and be transferred to all MIMO layers of the terminal.

In a kind of possible design, i-th of network equipment known to terminal is that the MIMO layer number of terminal scheduling refers to the MIMO layer number that i-th of network equipment last time is terminal scheduling or i-th of network equipment that the terminal last time determines can be the MIMO layer number maximum value of terminal scheduling.

Therefore, each network equipment known to terminal is that the MIMO layer number of terminal scheduling can be there are many probable value in the embodiment of the present application, and implementation is flexible and convenient.

Second aspect, the application provide a kind of method of determining MIMO layer number, comprising: terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling；The S network equipment of the terminal into the K network equipment sends corresponding MIMO layer number adjustment information, S≤K respectively；Wherein, the K network equipment is corresponding to be less than or equal to the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, K is the positive integer more than or equal to 2, the corresponding MIMO layer number adjustment information of j-th of network equipment carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be terminal scheduling, the corresponding MIMO layer number adjustment amount of j-th of network equipment is the MIMO layer number that terminal j-th of network equipment according to known to terminal is terminal scheduling and j-th of network equipment can be the MIMO layer number maximum value determination of terminal scheduling, j-th of network equipment is any network equipment in the S network equipment.

Therefore, using method provided by the present application, it is adapted to the dynamic change of wireless channel, improve spectrum efficiency, support the MIMO layer number that multiple network equipments are independently dispatched in the scene that multiple network equipments carry out joint transmission for terminal, and guarantee that summation that the multiple network equipments are the MIMO layer number that terminal is independently dispatched is no more than the maximum value for the MIMO layer number that the terminal can be handled, requirement of the expense of backhaul link with reduction to backhaul link low latency can also be avoided.

In a kind of possible design, j-th of network equipment known to terminal is that the MIMO layer number of terminal scheduling refers to the MIMO layer number that j-th of network equipment last time is terminal scheduling or j-th of network equipment that the terminal last time determines can be the MIMO layer number maximum value of terminal scheduling.

In a kind of possible design, terminal be determined as terminal provide service the K network equipment it is corresponding can for terminal scheduling MIMO layer number maximum value when, it is that the reference signal that terminal is sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be terminal scheduling MIMO layer number maximum value；If terminal, which determines that the K network equipment is corresponding, to be greater than the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, terminal redefines K network equipment point according to preset algorithm Not corresponding can be the MIMO layer number maximum value of terminal scheduling.

In a kind of possible design, when the S network equipment of the terminal into the K network equipment sends corresponding MIMO layer number adjustment information respectively, terminal sends corresponding confirmation ACK message or non-acknowledgement NACK message to the S network equipment respectively, and the corresponding ACK message of j-th of network equipment or NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be terminal scheduling.

Therefore, using method provided by the embodiments of the present application, it is increased without new message format and type, MIMO layer number adjustment amount is carried using original ACK message and NACK message, uplink expense can be saved.

In a kind of possible design, terminal can send corresponding MIMO layer number adjustment information to the S network equipment in dedicated Physical Uplink Control Channel PUCCH resource respectively；Alternatively, terminal can send corresponding MIMO layer number adjustment information to the S network equipment by media access control control element MAC CE respectively.

Therefore, using method provided by the present application, terminal sends MIMO layer number adjustment message to the network equipment and can take various forms, and implementation is flexible and convenient.

In a kind of possible design, the S network equipment include the not sent mistake of terminal can be terminal scheduling MIMO layer number maximum value the network equipment and terminal it is known be the MIMO layer number of terminal scheduling and the network equipment that can be the MIMO layer number maximum value of terminal scheduling different of terminal determination.

It is the MIMO layer number of terminal scheduling that terminal is known and terminal determination can be to refer to that terminal was once sent to it can be the network equipment of the MIMO layer number maximum value of terminal scheduling to the identical network equipment of the MIMO layer number maximum value of terminal scheduling, but the MIMO layer number maximum value that the network equipment that is determined according to this of terminal can be terminal scheduling is compared with the MIMO layer number that the known network equipment is terminal scheduling and is not changed, therefore terminal can not have to that the network equipment is notified to be adjusted to the MIMO layer number of terminal scheduling.Corresponding MIMO layer number adjustment information is not sent to the network equipment, to save uplink communication expense.Therefore, terminal can choose to all K network equipments and send corresponding MIMO layer number adjustment information respectively.Alternatively, terminal can choose the S network equipment into the K network equipment sends corresponding MIMO layer number adjustment information respectively.

In a kind of possible design, terminal sends corresponding CSI message to the S network equipment respectively, and the corresponding CSI message of j-th of network equipment carries the MIMO layer number maximum value that j-th of network equipment can be terminal scheduling.

Which is applied to be relatively specific for terminal and be configured to need the scene to network equipment feedback MIMO channel rank of matrix.Terminal only need to carry corresponding RI in CSI, and RI indicates that the network equipment can be the MIMO layer number maximum value of terminal scheduling.

The third aspect, the application provide a kind of method of determining MIMO layer number, comprising: the network equipment receives terminal and passes through the modulated first message of the first modulation system；The network equipment is determining with the first modulation system and corresponding first preset value of first message according to the corresponding relationship of modulation system, type of message and preset value, and will be the MIMO layer number of terminal scheduling the first preset value of adjustment；Alternatively, the network equipment, which receives terminal, passes through the modulated second message of the first modulation system；The network equipment is determining with the first modulation system and corresponding second preset value of first message according to the corresponding relationship of modulation system, type of message and preset value, and will be the MIMO layer number of terminal scheduling the second preset value of adjustment；Wherein, the first preset value is positive integer, and the second preset value is negative integer.

Therefore, using method provided by the present application, having solved the problems, such as the terminal processes not is transferred to all MIMO layers of the terminal, and not will increase uplink by the MIMO layer number that the above method instruction network equipment is adjusted to terminal scheduling Communication overhead.

In a kind of possible design, the network equipment receives terminal and passes through the modulated first message of the second modulation system；The network equipment determines according to the corresponding relationship of modulation system, message and preset value and is not adjusted to the MIMO layer number of terminal scheduling with the second modulation system and the corresponding third preset value of first message, the network equipment；Alternatively, the network equipment, which receives terminal, passes through the modulated second message of the second modulation system；The network equipment determines according to the corresponding relationship of modulation system, message and preset value and is not adjusted to the MIMO layer number of terminal scheduling with the second modulation system and the corresponding third preset value of second message, the network equipment；Wherein, third preset value is 0.

In a kind of possible design, when first message is ACK message, second message is NACK message, and when first message is NACK message, second message is ACK message；When the first modulation system is binary phase shift keying BPSK, the second modulation system is orthogonal binary phase shift keying QBPSK, and when the first modulation system is QBPSK, the second modulation system is BPSK.

Fourth aspect, the application provide a kind of method of determining MIMO layer number, comprising: the network equipment receives the MIMO layer number adjustment information that terminal is sent.The network equipment is adjusted to the MIMO layer number of terminal scheduling according to MIMO layer number adjustment information.Wherein, MIMO layer number adjustment information carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be terminal scheduling, and the corresponding MIMO layer number adjustment amount of the network equipment is the MIMO layer number that terminal network equipment according to known to terminal is terminal scheduling and the network equipment can be the MIMO layer number maximum value determination of terminal scheduling.

In a kind of possible design, the network equipment known to terminal is that the MIMO layer number of terminal scheduling refers to the MIMO layer number that the network equipment last time is terminal scheduling or the network equipment that the terminal last time determines can be the MIMO layer number maximum value of terminal scheduling.

In a kind of possible design, the network equipment receives the ACK message or NACK message that terminal is sent, and ACK message or NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be terminal scheduling.

Therefore, using method provided by the embodiments of the present application, it is increased without new disappear format and type, MIMO layer number adjustment amount is carried using original ACK message and NACK message, uplink expense can be saved.

5th aspect, the application provide a kind of terminal, comprising: transmission unit and processing unit；

The processing unit, for be determined as the terminal provide service the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value, wherein, the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, and K is the positive integer more than or equal to 2；The processing unit, is also used to: when determining i-th of network equipment pair When the MIMO layer number adjustment amount answered is greater than or equal to first preset value, i-th of network equipment will be sent to by the transmission unit by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is the terminal scheduling adjusts first preset value；When determining that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to second preset value, i-th of network equipment will be sent to by the transmission unit by the modulated second message of the first modulation system, so that the MIMO layer number that i-th of network equipment is the terminal scheduling adjusts second preset value；Wherein, the corresponding MIMO layer number adjustment amount of i-th of network equipment is the MIMO layer number that the terminal i-th of network equipment according to known to the terminal is the terminal scheduling and i-th of network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines, first preset value is positive integer, second preset value is negative integer, i-th of network equipment is any network equipment in the K network equipment, and i is less than or equal to the positive integer of K.

In a kind of possible design, the processing unit, be also used to: be determined as the terminal provide service the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value after, when determining that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than second preset value and is less than first preset value, i-th of network equipment will be sent to by the transmission unit by the modulated first message of the second modulation system or second message, so that i-th of network equipment is not adjusted to the MIMO layer number of the terminal scheduling.

In a kind of possible design, when the first message is ACK message, the second message is NACK message, and when the first message is NACK message, the second message is ACK message；When first modulation system is binary phase shift keying BPSK, second modulation system is orthogonal binary phase shift keying QBPSK, and when first modulation system is QBPSK, second modulation system is BPSK.

In a kind of possible design, the processing unit is used for: it is that the reference signal sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value；If it is determined that the K network equipment is corresponding to be greater than the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm to be the MIMO layer number maximum value of the terminal scheduling.

In a kind of possible design, i-th of network equipment known to the terminal is that the MIMO layer number of the terminal scheduling refers to the MIMO layer number that i-th of network equipment last time is the terminal scheduling or i-th of network equipment that the terminal last time determines can be the MIMO layer number maximum value of the terminal scheduling.

6th aspect, the application provide a kind of terminal characterized by comprising processing unit and transmission unit；

The processing unit, for be determined as the terminal provide service the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value, wherein, the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, and K is the positive integer more than or equal to 2；The transmission unit sends corresponding MIMO layer number adjustment information, S≤K for the S network equipment into the K network equipment respectively；Wherein, the corresponding MIMO layer number adjustment information of j-th of network equipment carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be the terminal scheduling, the corresponding MIMO layer number adjustment amount of j-th of network equipment is the MIMO layer number that the terminal j-th of network equipment according to known to the terminal is the terminal scheduling and j-th of network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines, j-th of network equipment is any network equipment in the S network equipment.

In a kind of possible design, j-th of network equipment known to the terminal is the MIMO layer number or the terminal that the MIMO layer number of the terminal scheduling refers to that j-th of network equipment last time is the terminal scheduling J-th of network equipment that last time determines can be the MIMO layer number maximum value of the terminal scheduling.

In a kind of possible design, the processing unit is used for:

It is that the reference signal sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value；

If it is determined that the K network equipment is corresponding can be greater than the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm for the terminal to be the MIMO layer number maximum value of the terminal scheduling.

In a kind of possible design, the transmission unit is used for

Corresponding confirmation ACK message or non-acknowledgement NACK message are sent respectively to the S network equipment, and the corresponding ACK message of j-th of network equipment or NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be the terminal scheduling.

7th aspect, the application provide a kind of network equipment, comprising: processing unit, receiving unit；

The receiving unit passes through the modulated first message of the first modulation system for receiving terminal；The processing unit, it is determining with first modulation system and corresponding first preset value of first message for the corresponding relationship according to modulation system, type of message and preset value, and will be the MIMO layer number of terminal scheduling adjustment first preset value；Alternatively, the receiving unit, passes through the modulated second message of the first modulation system for receiving the terminal；The processing unit, it is determining with first modulation system and corresponding second preset value of first message for the corresponding relationship according to the modulation system, type of message and preset value, and will be the MIMO layer number of terminal scheduling adjustment second preset value；Wherein, first preset value is positive integer, and second preset value is negative integer.

In a kind of possible design, the receiving unit passes through the modulated first message of the second modulation system for receiving the terminal；The processing unit, for the corresponding relationship according to the modulation system, message and preset value, determination is not adjusted to the MIMO layer number of the terminal scheduling with second modulation system and the corresponding third preset value of the first message, the network equipment；Alternatively, the receiving unit, passes through the modulated second message of the second modulation system for receiving the terminal；The processing unit, for the corresponding relationship according to the modulation system, message and preset value, determination is not adjusted to the MIMO layer number of the terminal scheduling with second modulation system and the corresponding third preset value of the second message, the network equipment；Wherein, the third preset value is 0.

Eighth aspect, a kind of network equipment, comprising: processing unit, receiving unit；

The receiving unit, for receiving the MIMO layer number adjustment information of terminal transmission；Wherein, the MIMO layer number adjustment information carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be the terminal scheduling, and the corresponding MIMO layer number adjustment amount of the network equipment is the MIMO layer number that terminal network equipment according to known to the terminal is the terminal scheduling and the network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines；The processing unit, for being adjusted to the MIMO layer number of the terminal scheduling according to the MIMO layer number adjustment information.

In a kind of possible design, the network equipment known to the terminal is that the MIMO layer number of the terminal scheduling refers to the MIMO layer number that the network equipment last time is the terminal scheduling or the network equipment that the terminal last time determines can be the MIMO layer number maximum value of the terminal scheduling.

In a kind of possible design, the receiving unit, for: the ACK message or NACK message of the terminal transmission are received, the ACK message or the NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be the terminal scheduling.

9th aspect, the embodiment of the invention also provides a kind of terminal, which has the function of realizing terminal behavior in the method example of above-mentioned first aspect.It include transceiver, processor in the structure of the terminal, the transceiver is used to carry out communication interaction with the network equipment, the processor is configured to terminal is supported to execute corresponding function in the method for above-mentioned first aspect.The terminal can also include memory, and the memory is coupled with the processor, save the necessary program instruction of the terminal and data.

Tenth aspect, the embodiment of the invention also provides a kind of terminal, which has the function of realizing terminal behavior in the method example of above-mentioned second aspect.It include transceiver, processor in the structure of the terminal, the transceiver is used to carry out communication interaction with the network equipment, the processor is configured to terminal is supported to execute corresponding function in the method for above-mentioned second aspect.The terminal can also include memory, and the memory is coupled with the processor, save the necessary program instruction of the terminal and data.

Tenth on the one hand, and the embodiment of the present application also provides a kind of network equipment, which has the function of realizing network equipment behavior in the method example of the above-mentioned third aspect.It include processor in the structure of the network equipment, transceiver, the transceiver is used to carry out communication interaction with terminal, the processor is configured to the network equipment is supported to execute corresponding function in the method for the above-mentioned third aspect.The network equipment can also include memory, and the memory is coupled with the processor, save the necessary program instruction of the network equipment and data.

12nd aspect, the embodiment of the present application also provides a kind of network equipment, which has the function of realizing network equipment behavior in the method example of above-mentioned fourth aspect.It include processor in the structure of the network equipment, transceiver, the transceiver is used to carry out communication interaction with terminal, the processor is configured to the network equipment is supported to execute corresponding function in the method for above-mentioned fourth aspect.The network equipment can also include memory, and the memory is coupled with the processor, save the necessary program instruction of the network equipment and data.

13rd aspect, the embodiment of the present application also provides a kind of communication system, which includes multiple network equipments and terminal.

Fourteenth aspect, the embodiment of the present application also provides the first non-transitory computer storage mediums, are stored with computer executable instructions, the method that the computer executable instructions are used to execute the above-mentioned first aspect of the application or second aspect.

15th aspect, the embodiment of the present application also provides second of non-transitory computer storage mediums, are stored with computer executable instructions, the method that the computer executable instructions are used to execute the above-mentioned third aspect of the application or fourth aspect.

16th aspect, the embodiment of the present application also provides the first computer program products, the computer program product includes the computer program being stored in the first above-mentioned non-transitory computer storage medium, the computer program includes program instruction, when described program instruction is computer-executed, the method that makes the computer execute the above-mentioned first aspect of the application or second aspect.

17th aspect, the embodiment of the present application also provides second of computer program products, the computer program product includes the computer program being stored in above-mentioned second of non-transitory computer storage medium, the computer program includes program instruction, when described program instruction is computer-executed, the method that makes the computer execute the above-mentioned third aspect of the application or fourth aspect.

Using method provided by the present application, it is adapted to the dynamic change of wireless channel, improves spectrum efficiency, is supported Multiple network equipments are the MIMO layer number that terminal is independently dispatched in the scene of multiple network equipments progress joint transmissions, and guarantee that summation that the multiple network equipments are the MIMO layer number that terminal is independently dispatched is no more than the maximum value for the MIMO layer number that the terminal can be handled, requirement of the expense of backhaul link with reduction to backhaul link low latency can also be avoided.

Detailed description of the invention

Fig. 1 is that two TRP combine the schematic diagram of a scenario that data are sent to a UE in the application background technique；

Fig. 2 is the schematic diagram of main application scenarios in the embodiment of the present application；

Fig. 3 is one of the general introduction flow chart of method that MIMO layer number is determined in the embodiment of the present application；

Fig. 4 is BPSK planisphere and QBPSK planisphere in the embodiment of the present application；

Fig. 5 is the two of the general introduction flow chart for the method that MIMO layer number is determined in the embodiment of the present application；

Fig. 6 is the detailed process schematic diagram that MIMO layer number is determined in the embodiment of the present application；

Fig. 7 is the unit composition schematic diagram of terminal in the embodiment of the present application；

Fig. 8 is the unit composition schematic diagram of the network equipment in the embodiment of the present application；

Fig. 9 is the entity structure schematic diagram of terminal in the embodiment of the present application；

Figure 10 is the entity structure schematic diagram of the network equipment in the embodiment of the present application.

Specific embodiment

With reference to the accompanying drawing, embodiments herein is described.

In the embodiment of the present application, downlink refers to that the network equipment is transmitted to the message of terminal, and uplink refers to that terminal is transmitted to the message of the network equipment.The applicable system of the embodiment of the present application can be the system using mode of frequency division duplexing (frequency division duplex, FDD), be also possible to the system of TDD mode (time division duplex, TDD).

The invention relates to network element include the network equipment and terminal.Wherein, the network equipment is the access device that terminal is wirelessly linked into the mobile communication system, it can be base station (NodeB), evolved base station (eNodeB), the base station in 5G mobile communication system, small base station, micro-base station, the access node etc. in base station or WiFi system in TRP, future mobile communication system, embodiments herein to particular technique used by the network equipment and specific equipment form without limitation.

Terminal is referred to as terminal device (Terminal equipment), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) etc..Terminal can be mobile phone (mobile phone), tablet computer (Pad, Tablet), computer with radio transmission-receiving function, virtual reality (Virtual Reality, VR) terminal device, augmented reality (Augmented Reality, AR) terminal device, wireless terminal in Industry Control (industrial control), wireless terminal in unmanned (self driving), wireless terminal in remote operation (remote medical surgery), wireless terminal in smart grid (smart grid), wireless end in transportation safety (transportation safety) End, the wireless terminal in smart city (smart city), the wireless terminal in wisdom family (smart home) etc..

The embodiment of the present application is applied to the scene of multiple network equipment joint transmissions.For a terminal, the multiple network equipments for sending data to the terminal form a sets of network devices, it is properly termed as service network apparatus collection, also referred to as terminal is established with the network equipment that service network apparatus is concentrated and is associated with, or provides multiple network equipments of service for terminal.Wherein, multiple network equipments can be by a gNB (Next Generation Node B, next-generation base station) Control, can also be controlled by multiple gNB, or be can be and connect with a gNB for multiple network equipments, be also possible to and multiple gNB connections.

Illustrate the main application scenarios of the embodiment of the present application by taking Fig. 2 as an example below.

As shown in Figure 2, under more TRP joint transmission scenes, it is known as servicing TRP collection (Serving TRP Set) for the UE TPR for providing service, is can wrap in service TRP collection (serving TRP set) containing K TRP, wherein K is the integer more than or equal to 2.Therefore, there may be K TRP while service a UE, i.e. each TRP may send one or more scheduling informations (such as Downlink Control Information (downlink control information to the UE, DCI)) and/or data corresponding with above-mentioned scheduling information (such as, Physical Downlink Shared Channel (physical downlink shared channel, PDSCH)).

The K TRP can be to be connect with the same gNB, is controlled by the same gNB.When the K TRP carries out independent scheduling, the K TRP may be respectively that the summation of the MIMO layer number of UE scheduling is more than the maximum value for the MIMO layer number that the UE is capable of handling on identical running time-frequency resource or on partly overlapping running time-frequency resource, all MIMO layers for having led to the terminal processes not and being transferred to the terminal in turn result in UE decoding error and down channel resources waste.

Method provided by the embodiments of the present application is it is possible to prevente effectively from there is the above problem.As shown in figure 3, the embodiment of the present application provides a kind of method of determining MIMO layer number, this method comprises:

Step 300: terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling.

Wherein, the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, and K is the positive integer more than or equal to 2.

Step 310a: when terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than or equal to the first preset value, terminal will be sent to i-th of network equipment by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the second preset value.

Step 320a: what network equipment reception terminal was sent passes through the modulated first message of the first modulation system, according to the corresponding relationship of modulation system, type of message and preset value, it is determining with the first modulation system and corresponding first preset value of first message, and will be the MIMO layer number of terminal scheduling the first preset value of adjustment.

Step 310b: when terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to the second preset value, terminal will be sent to i-th of network equipment by the modulated second message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the second preset value.

Step 320b: what network equipment reception terminal was sent passes through the modulated second message of the first modulation system, according to the corresponding relationship of modulation system, type of message and preset value, it is determining with the first modulation system and corresponding second preset value of second message, and will be the MIMO layer number of terminal scheduling the second preset value of adjustment.

Wherein, the corresponding MIMO layer number adjustment amount of i-th of network equipment is the MIMO layer number that terminal i-th of network equipment according to known to terminal is terminal scheduling and i-th of network equipment can be the MIMO layer number maximum value determination of terminal scheduling, first preset value is positive integer, second preset value is negative integer, i-th of network equipment is any network equipment in the K network equipment, and i is less than or equal to the positive integer of K.

It should be understood that above-mentioned steps 310a and step 320a, be two kinds of possible situations with step 310b and step 320b.

For step 300, in a kind of possible design, terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling, can use but be not limited to following manner:

It is that the reference signal that terminal is sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be terminal scheduling MIMO layer number maximum value.If terminal determines that the K network equipment is corresponding can be greater than the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm for terminal to be the MIMO layer number maximum value of terminal scheduling.If terminal determines that the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, terminal is not necessarily to that it is corresponding to redefine the K network equipment can be the MIMO layer number maximum value of terminal scheduling.Therefore, pass through the above method, the problem of ensure that the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that is capable of handling of terminal for the summation of the MIMO layer number maximum value of terminal scheduling, be able to solve terminal processes not and be transferred to all MIMO layers of the terminal.

Illustrate how terminal determines that the network equipment can be the MIMO layer number maximum value of terminal scheduling by taking a network equipment as an example below.Wherein, the reference signal that the network equipment is sent can be channel state information reference signals (channel state information, reference signal, CSI-RS), or demodulated reference signal (demodulation reference signal,) or the specific reference signal of cell (cell-specific reference Signal, CRS) DMRS.Therefore, terminal can measure and estimate down channel or channel matrix according to any reference signal in above-mentioned reference signal, obtain channel state information (channel state information, CSI).Wherein, CSI may include at least one in following information: channel quality indicates (channel quality indicator, CQI), mimo channel rank of matrix indicates (rank indication, RI), pre-coding matrix instruction (precoding matrix indicator, PMI), or precoding type instruction (precoding type indicator, PTI).Wherein, RI indicates that the network equipment can be the MIMO layer number maximum value of terminal scheduling.

Therefore, it is corresponding, which can to obtain the K network equipment, by the above method for terminal to be the MIMO layer number maximum value of terminal scheduling.For example, the K network equipment is corresponding to be respectively S for the MIMO layer number maximum value of terminal scheduling₁, S₂,…,S_K。

Further, it is corresponding, which to calculate the K network equipment, for terminal to be the MIMO layer number maximum value of terminal scheduling

It can be less than or wait for the summation of the MIMO layer number maximum value of terminal scheduling when the K network equipment is corresponding

Terminal can be greater than when the K network equipment is corresponding for the summation of the MIMO layer number maximum value of terminal schedulingIt can be determined by terminal manufacturer.It should be clear that determination (R given below₁, R₂,…,R_K) preset algorithm not as the application restriction.

Algorithm 1: terminal can be first by (S₁, S₂,…,S_K) by sorting from large to small, the processing that subtracts one is then taken turns doing,

Work as B=1, it, only need to be to (S when K=3₁, S₂,…,S_K) in maximum value do the processing that subtracts one.As B > K, to (S₁, S₂,…,S_K) processing that subtracts one is taken turns doing, until the difference for subtracting one treated summation and L is less than or equal to K, then again using the corresponding processing method as B≤K.

Further, terminal be determined as terminal provide service the K network equipment it is corresponding can be terminal scheduling MIMO layer number maximum value after, terminal firstly the need of the corresponding MIMO layer number adjustment amount of each network equipment of determination, that is, calculate MIMO layer number that the known network equipment is terminal scheduling and the network equipment can be terminal scheduling MIMO layer number maximum value difference.

Illustrate how terminal calculates the corresponding MIMO layer number adjustment amount C of i-th of network equipment by taking i-th of network equipment as an example below_i.Assuming that the MIMO layer number maximum value that i-th of network equipment can be terminal scheduling is R_i。

Specifically, the MIMO layer number that i-th of network equipment known to terminal is terminal scheduling can be following two probable value:

The first probable value: i-th of network equipment last time is that the MIMO layer number of terminal scheduling is P_i。

The corresponding MIMO layer number adjustment amount of i-th of network equipment is C_i=R_i–P_i。

Second of probable value: i-th of network equipment that the terminal last time determines can be the MIMO layer number maximum value Q of terminal scheduling_i。

The corresponding MIMO layer number adjustment amount of i-th of network equipment is C_i=R_i–Q_i。

After terminal obtains the corresponding MIMO layer number adjustment amount of i-th of network equipment, terminal need to be according to the corresponding relationship of modulation system, type of message and preset value, judge the relationship of i-th of network equipment corresponding MIMO layer number adjustment amount and preset value, determines to i-th of network equipment and send the modulation system and type of message that message uses.

Specifically, the corresponding relationship of modulation system, type of message and preset value is as shown in table 1.

Table 1

Therefore, when terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than or equal to the first preset value, such as, first preset value is 2, the corresponding MIMO layer number adjustment amount of i-th of network equipment is 3, then terminal will be sent to i-th of network equipment by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the first preset value.The network equipment receive that terminal sends by the modulated first message of the first modulation system, according to the corresponding relationship of modulation system, type of message and preset value, it is determining with the first modulation system and Corresponding first preset value of first message, and the first preset value will be adjusted for the MIMO layer number of terminal scheduling, the as MIMO layer number of terminal scheduling increases by 2 layers.

When terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to the second preset value, such as, second preset value is -2, the corresponding MIMO layer number adjustment amount of i-th of network equipment is -3, and terminal will be sent to i-th of network equipment by the modulated second message of the first modulation system.What network equipment reception terminal was sent passes through the modulated second message of the first modulation system, according to the corresponding relationship of modulation system, type of message and preset value, it determines and the first modulation system and corresponding second preset value of first message, and the second preset value being adjusted for the MIMO layer number of terminal scheduling, the as MIMO layer number of terminal scheduling reduces 2 layers.

Further, when terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than the second preset value and when less than the first preset value, such as, first preset value is 2, second preset value is -2, the corresponding MIMO layer number adjustment amount of i-th of network equipment is -1, and terminal will be sent to i-th of network equipment by the modulated first message of the second modulation system or second message, so that i-th of network equipment is not adjusted to the MIMO layer number of terminal scheduling.What network equipment reception terminal was sent passes through the modulated first message of the second modulation system, the network equipment is according to the corresponding relationship of modulation system, message and preset value, it determines and the second modulation system and the corresponding third preset value of first message, since third preset value is 0, then the network equipment is not adjusted to the MIMO layer number of terminal scheduling；Or, what network equipment reception terminal was sent passes through the modulated second message of the second modulation system, the network equipment is according to the corresponding relationship of modulation system, message and preset value, it determines and the second modulation system and the corresponding third preset value of second message, since third preset value is 0, then the network equipment is not adjusted to the MIMO layer number of terminal scheduling.

In a kind of possible design, when first message is confirmation (acknowledge, ACK) message, second message is non-acknowledgement (negative acknowledge, NACK) message, when first message is NACK message, second message is ACK message.

In a kind of possible design, when the first modulation system is binary phase shift keying (Binary Phase Shift Keying, when BPSK), second modulation system is orthogonal binary phase shift keying (Quadrature Binary Phase Shift Keying, QBPSK), when the first modulation system is QBPSK, the second modulation system is BPSK.

It is illustrated in figure 4 BPSK planisphere and QBPSK planisphere.Wherein, BPSK and QBPSK is opposite, i.e., QBPSK planisphere is to carry out 90 degree of rotations to BPSK planisphere to obtain.Furthermore the planisphere of BPSK is also possible to other forms, such as, from quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK) or in the planisphere of quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM) planisphere of BPSK is obtained.

It should be understood that terminal is adjusted to the MIMO layer number of terminal scheduling, the ability for needing the network equipment to have two kinds of modulation systems of automatic identification BPSK and QBPSK using the above-mentioned indicating mode instruction network equipment.

Below by taking table 2 as an example, illustrate how terminal indicates that the network equipment is adjusted to the MIMO layer number of terminal scheduling.Wherein, a is positive integer, and b is negative integer.

Table 2

Therefore, when terminal determines that the corresponding MIMO layer number adjustment amount of the network equipment is greater than or equal to a, terminal will be sent to the network equipment by the modulated ACK of BPSK, so that the MIMO layer number that the network equipment is terminal scheduling adjusts a, that is, increase a layers.

When terminal determine the corresponding MIMO layer number adjustment amount of the network equipment be less than or equal to b when, terminal will be sent to the network equipment by the modulated NACK of BPSK so that the network equipment be terminal scheduling MIMO layer number adjust b, i.e., reduction-b layers.

When terminal determines that the corresponding MIMO layer number adjustment amount of the network equipment is greater than b and is less than a, terminal will be sent to the network equipment by QBPSK modulated ACK or NACK, so that the network equipment is not adjusted to the MIMO layer number of terminal scheduling.

To sum up, by embodiment as shown in Figure 3, terminal can to avoid backhaul link expense and reduce requirement to backhaul link low latency, solved the problems, such as the terminal processes not and be transferred to all MIMO layers of the terminal.And uplink communication expense not will increase by the MIMO layer number that the above method instruction network equipment is adjusted to terminal scheduling.

In addition to above-mentioned embodiment as shown in Figure 3, the embodiment of the present application also provides a kind of method of determining MIMO layer number, and overlaps will not be repeated with embodiment illustrated in fig. 3.

Specific method as shown in figure 5, this method comprises:

Step 500: terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling.

It should be understood that step 500 is identical as the specific embodiment of step 300 in Fig. 3, repeat no more.

Step 510: the S network equipment of the terminal into the K network equipment sends corresponding MIMO layer number adjustment information, S≤K respectively.

Wherein, the corresponding MIMO layer number adjustment information of j-th of network equipment carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be terminal scheduling, the corresponding MIMO layer number adjustment amount of j-th of network equipment is the MIMO layer number that terminal j-th of network equipment according to known to terminal is terminal scheduling and j-th of network equipment can be the MIMO layer number maximum value determination of terminal scheduling, and j-th of network equipment is any network equipment in the S network equipment.

It should be clear that step 500 is identical as the specific embodiment of step 300 in Fig. 3, and the calculation method of the corresponding MIMO layer number adjustment amount of j-th of network equipment is also identical as the calculation method mentioned in above-mentioned embodiment illustrated in fig. 3, and therefore, overlaps will not be repeated.

It should be understood that, the above-mentioned not sent mistake of terminal can be to provide the network equipment of service for the first time for terminal for the network equipment of the MIMO layer number maximum value of terminal scheduling, such as when the network equipment collection for providing service for terminal changes, there may be the new network equipment to provide service for terminal.

It is the MIMO layer number of terminal scheduling that above-mentioned terminal is known and terminal determination can be to refer to that terminal was once sent to it can be the network equipment of the MIMO layer number maximum value of terminal scheduling to the different network equipment of the MIMO layer number maximum value of terminal scheduling, but the MIMO layer number maximum value that the network equipment that is determined according to this of terminal can be terminal scheduling is compared with the MIMO layer number that the known network equipment is terminal scheduling and is changed, therefore terminal needs to notify The network equipment is adjusted to the MIMO layer number of terminal scheduling.And the known MIMO layer number for be terminal scheduling of terminal and terminal determination can be to refer to that terminal was once sent to it can be the network equipment of the MIMO layer number maximum value of terminal scheduling to the identical network equipment of the MIMO layer number maximum value of terminal scheduling, but the MIMO layer number maximum value that the network equipment that is determined according to this of terminal can be terminal scheduling is compared with the MIMO layer number that the known network equipment is terminal scheduling and is not changed, therefore terminal can not have to that the network equipment is notified to be adjusted to the MIMO layer number of terminal scheduling.Corresponding MIMO layer number adjustment information is not sent to the network equipment, to save uplink communication expense.

Therefore, terminal can choose to all K network equipments and send corresponding MIMO layer number adjustment information respectively.Or, terminal can choose the S network equipment into the K network equipment and send corresponding MIMO layer number adjustment information respectively, and ensure that terminal determines to this can be terminal scheduling MIMO layer number maximum value with it is known be that the MIMO layer number of terminal scheduling compares the changed network equipment and sends corresponding MIMO layer number adjustment information.

Further, for step 510, the S network equipment of the terminal into the K network equipment sends corresponding MIMO layer number adjustment information respectively, can use but be not limited to following methods:

First way:

Terminal sends corresponding CSI message to the S network equipment respectively, and the corresponding CSI message of j-th of network equipment carries the MIMO layer number maximum value that j-th of network equipment can be terminal scheduling.

It should be understood that generally, first way is applied to be relatively specific for terminal to be configured to need the scene to network equipment feedback MIMO channel rank of matrix.

Notice, if terminal, which determines that the K network equipment is corresponding, to be less than or equal to the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, terminal is not necessarily to that it is corresponding to redefine the K network equipment can be the MIMO layer number maximum value of terminal scheduling, it is directed to each network equipment at this time, terminal only need to carry corresponding RI in CSI, and RI indicates that the network equipment can be the MIMO layer number maximum value of terminal scheduling.If terminal, which determines that the K network equipment is corresponding, to be greater than the MIMO layer number maximum value that terminal is capable of handling for the summation of the MIMO layer number maximum value of terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm for terminal to be the MIMO layer number maximum value of terminal scheduling, it is directed to each network equipment at this time, terminal is when CSI carries corresponding RI, RI at this time can be former MIMO layer number maximum value, or the MIMO layer number maximum value redefined, or it is former MIMO layer number maximum value that CSI, which carries corresponding RI, CSI also carries the MIMO layer number maximum value redefined.

It should be understood that, CSI information can be through Physical Uplink Shared Channel (physical uplink shared channel, PUSCH it) sends, or, it is also possible to send by Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH).

The second way:

Terminal sends corresponding ACK message or NACK message to the S network equipment respectively, and the corresponding ACK message of j-th of network equipment or NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be terminal scheduling.

It should be understood that above-mentioned ACK message or NACK message can be and sent by PUSCH, alternatively, being also possible to send by PUCCH.

It should be understood that generally, the second way is applied to be relatively specific for terminal and is configured to not need scene to network equipment feedback MIMO channel rank of matrix.

The third mode:

Terminal sends corresponding MIMO layer number adjustment information to the S network equipment in dedicated PUCCH resource respectively.

For example, in the 5th generation, newly eated dishes without rice or wine (5G NR) system for MIMO layer number adjustment information define it is dedicated physically Row control channel format and resource (PUCCH Format).Therefore, terminal can send corresponding MIMO layer number adjustment information to the S network equipment by dedicated ascending physical signal control channel format and resource respectively.To the S network equipment send respectively corresponding MIMO layer number adjustment information define dedicated uplink physical control channel resource can be shared by multiple terminals, and the MIMO layer number adjustment information of multiple terminals can be distinguished by way of code division multiplexing (different code or sequence can be used in i.e. different terminals).

4th kind of mode:

Terminal sends corresponding MIMO layer number adjustment information to the S network equipment by media access control control element (Medium Access Control Control Element, MAC CE) respectively.

For example, the terminal can send MIMO layer number adjustment information to k-th of network equipment by using MAC CE if terminal receives the uplink scheduling authorization (uplink grant) of k-th of network equipment transmission.

Further, the network equipment receives the MIMO layer number adjustment information that terminal is sent, and the MIMO layer number of terminal scheduling, including following two situation are adjusted to according to MIMO layer number adjustment information:

The first situation: MIMO layer number adjustment information carries the MIMO layer number maximum value that the network equipment can be terminal scheduling.

The network equipment is after receiving the MIMO layer number adjustment information that terminal is sent, it can be the MIMO layer number maximum value of terminal scheduling according to the network equipment, determine the MIMO layer number next time for terminal scheduling, it should be clear that being next time that the MIMO layer number of terminal scheduling can be less than or equal to the MIMO layer number maximum value that the network equipment can be terminal scheduling.

Second situation: MIMO layer number adjustment information carries the corresponding MIMO layer number adjustment amount of the network equipment.

The network equipment is after receiving the MIMO layer number adjustment information that terminal is sent, according to the corresponding MIMO layer number adjustment amount of the network equipment, it is known be the MIMO layer number of terminal scheduling on the basis of (such as it is upper be once the MIMO layer number of terminal scheduling on the basis of or on the basis of upper once determinations is the MIMO layer number maximum value of terminal scheduling) increase or decrease MIMO layer number for terminal scheduling, determination is the MIMO layer number of terminal scheduling next time.

Furthermore, the network equipment does not receive the MIMO layer number adjustment information of terminal transmission, it may be because of the MIMO layer number adjustment information that the terminal is not sent to the network equipment, it is also possible to because the network equipment does not receive the MIMO layer number adjustment information of terminal transmission.At this point, maximum value of the network equipment using the MIMO layer number of default, for example, default value is 1, or repeats to use the last time for the MIMO layer numerical value of terminal scheduling.

Illustrate the detailed process for determining MIMO layer number below with reference to Fig. 6.

Assuming that the network equipment 1 and the network equipment 2 provide service for terminal, first backward terminal has sent reference signal for the network equipment 1 and the network equipment 2, then, the reference signal of reference signal and the transmission of the network equipment 2 that terminal respectively sends the network equipment 1 carries out channel estimation, terminal be determined as terminal provide service network apparatus 1 and the network equipment 2 it is corresponding can be terminal scheduling MIMO layer number maximum value, specific implementation be referred to step 300.Terminal sends corresponding MIMO layer number adjustment information to the network equipment 1 and the network equipment 2 respectively.Specifically, the MIMO layer number adjustment information that terminal is sent to the network equipment 1 carries the MIMO layer number maximum value (or MIMO layer number adjustment amount) that the network equipment 1 can be terminal scheduling, the network equipment 1 is after the MIMO layer number adjustment information for receiving terminal transmission, it can be adjusted to the MIMO layer number of terminal scheduling for the MIMO layer number maximum value (or MIMO layer number adjustment amount) of terminal scheduling according to the network equipment 1, send data to terminal.Similarly, the MIMO layer number adjustment information that terminal is sent to the network equipment 2 carries the MIMO layer number maximum value (or MIMO layer number adjustment amount) that the network equipment 2 can be terminal scheduling, the network equipment 2 is after the MIMO layer number adjustment information for receiving terminal transmission, it can be adjusted to the MIMO layer number of terminal scheduling for the MIMO layer number maximum value (or MIMO layer number adjustment amount) of terminal scheduling according to the network equipment 1, send data to terminal.

If should be understood that the network equipment 1 that MIMO layer number adjustment information carries can be the MIMO of terminal scheduling Number of plies maximum value known with the network equipment 1 is that the MIMO layer number of terminal scheduling is identical (or MIMO layer number adjustment amount is 0), and the network equipment 1 is not necessarily to be adjusted to the MIMO layer number of terminal scheduling.Wherein, it is the MIMO layer number of terminal scheduling that the network equipment 1 is known and the network equipment 1 known to terminal is that the MIMO layer number of terminal scheduling is identical.

To sum up, embodiment as shown in Figure 5 is adapted to the dynamic change of wireless channel, improve spectrum efficiency, support the MIMO layer number that multiple network equipments are independently dispatched in the scene that multiple network equipments carry out joint transmission for terminal, and guarantee that summation that the multiple network equipments are the MIMO layer number that terminal is independently dispatched is no more than the maximum value for the MIMO layer number that the terminal can be handled, it can be to avoid requirement of the expense with reduction to backhaul link low latency of backhaul link.

Based on above embodiments, the embodiment of the present application provides a kind of terminal, for realizing such as Fig. 3 or method shown in fig. 5, as shown in fig.7, the terminal 700 includes: transmission unit 701 and processing unit 702；

Referring specifically to such as Fig. 3 or embodiment of the method shown in fig. 5 and its above-mentioned possible design and it is corresponding in terms of description, details are not described herein by the application.

Based on above embodiments, the embodiment of the present application provides a kind of network equipment, for realizing the method for such as Fig. 3 or shown in fig. 5 selection wave beam, as shown in fig.8, the network equipment 800 includes: receiving unit 801 and processing unit 802.

It should be understood that the division of the above terminal and each unit of the network equipment is only a kind of division of logic function, can completely or partially be integrated on a physical entity in actual implementation, it can also be physically separate.And these units can be realized all by way of processing element calls with software；It can also all realize in the form of hardware；It can realize that unit is realized in the form of hardware by way of processing element calls with unit with software.Such as processing unit can be the processing element individually set up, and also can integrate and realize in some chip, in addition it is also possible to be stored in memory in the form of program, called by some processing element and executed the function of the unit.The realization of other units is similar therewith.Furthermore these units completely or partially can integrate together, can also independently realize.Processing element described here can be a kind of integrated circuit, the processing capacity with signal.During realization, each step or above each unit of the above method can be completed by the integrated logic circuit of the hardware in processor elements or the instruction of software form.In addition, the above receiving unit is a kind of unit controlled and received, information can be received by terminal or the reception device of the network equipment, such as antenna and radio-frequency unit.The above transmission unit is a kind of unit that control is sent, and can send information by terminal or the sending device of the network equipment, such as antenna and radio-frequency unit.

Such as, the above unit can be arranged to implement one or more integrated circuits of above method, such as: one or more specific integrated circuit (Application Specific Integrated Circuit, ASIC), or, one or more microprocessors (digital singnal processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array, FPGA) etc..For another example, when some above unit is realized by way of processing element scheduler program, which can be general processor, for example, central processing unit (Central Processing Unit, CPU) or it is other can be with the processor of caller.For another example, these units can integrate together, realize in the form of system on chip (system-on-a-chip, SOC).

Based on above embodiments, the embodiment of the present application also provides a kind of terminals, for realizing such as Fig. 3 or method shown in fig. 5, and has the function of terminal as shown in Figure 7, refering to shown in Fig. 9, it include: one or more transceivers 901, one or more processors 902, one or more memories 903 and one or more antennas 904 in the terminal device, wherein, the function of transmission unit 701 is realized by the transceiver 801 in above-mentioned Fig. 7, and the function of processing unit 702 is realized by the processor 902.

The memory 903, for storing program, instruction etc..Specifically, program may include program code, which includes computer operation instruction.The memory 903 may include RAM, it is also possible to and it further include nonvolatile memory, a for example, at least magnetic disk storage.The processor 902 executes the application program that the memory 903 is stored, and realizes above-mentioned function, to realize such as Fig. 3 or method shown in fig. 5.

Referring specifically to such as Fig. 3 or embodiment of the method shown in fig. 5 and its above-mentioned possible design and it is corresponding in terms of description, details are not described herein by the application.Based on above embodiments, the embodiment of the present application also provides a kind of network equipments, for realizing such as Fig. 3 or method shown in fig. 5, and has the function of the network equipment as shown in Figure 8, refering to fig. 1 shown in 0, the network equipment 1000 includes: one or more transceivers 1001, one or more processors 1002, one or more memories 1003, one or more antennas 1004 and other one or more interfaces (such as, optical fiber link interface, Ethernet interface, and/or copper interfaces etc.), wherein, the function of the receiving unit 801 is realized by the transceiver 1001, the function of the processing unit 802 is realized by the processor 1002,

The memory 1003, for storing program, instruction etc..Specifically, program may include program code, which includes computer operation instruction.The memory 1003 may include random access memory (random access memory, RAM), it is also possible to further include nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.The processor 1002 executes the application program that the memory 1003 is stored, and realizes above-mentioned function, to realize method as shown in Figure 4.

In conclusion the application provides a kind of method of determining MIMO layer number, terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling；When terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than or equal to the first preset value, terminal will be sent to i-th of network equipment by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the first preset value；When terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to the second preset value, terminal will be sent to i-th of network equipment by the modulated second message of the first modulation system, so that the MIMO layer number that i-th of network equipment is terminal scheduling adjusts the second preset value.Therefore, using method provided by the present application, terminal can to avoid backhaul link expense and reduce requirement to backhaul link low latency, having solved the problems, such as the terminal processes not is transferred to all MIMO layers of the terminal, and not will increase uplink communication expense by the MIMO layer number that the above method instruction network equipment is adjusted to terminal scheduling.

The application provides a kind of method of determining MIMO layer number, and terminal is determined as terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of terminal scheduling；The S network equipment of the terminal into the K network equipment sends corresponding MIMO layer number adjustment information, S≤K respectively.Therefore, using method provided by the present application, it is adapted to the dynamic change of wireless channel, improve spectrum efficiency, support the MIMO layer number that multiple network equipments are independently dispatched in the scene that multiple network equipments carry out joint transmission for terminal, and guarantee that summation that the multiple network equipments are the MIMO layer number that terminal is independently dispatched is no more than the maximum value for the MIMO layer number that the terminal can be handled, requirement of the expense of backhaul link with reduction to backhaul link low latency can also be avoided.

It should be understood by those skilled in the art that, the embodiment of the present application can provide as method, system or computer program product.Therefore, the form of complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the embodiment of the present application.Moreover, the form for the computer program product implemented in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) that one or more wherein includes computer usable program code can be used in the embodiment of the present application.

The embodiment of the present application is that reference is described according to the flowchart and/or the block diagram of the method for the embodiment of the present application, equipment (system) and computer program product.It should be understood that the combination of process and/or box in each flow and/or block and flowchart and/or the block diagram that can be realized by computer program instructions in flowchart and/or the block diagram.These computer program instructions be can provide to the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate a machine, so that generating by the instruction that computer or the processor of other programmable data processing devices execute for realizing the device for the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, to be able to guide in computer or other programmable data processing devices computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates the manufacture including command device, which realizes the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that series of operation steps are executed on a computer or other programmable device to generate computer implemented processing, thus the step of instruction executed on a computer or other programmable device is provided for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

Obviously, those skilled in the art can carry out various modification and variations without departing from spirit and scope to the embodiment of the present application.If then the application is also intended to include these modifications and variations in this way, these modifications and variations of the embodiment of the present application belong within the scope of the claim of this application and its equivalent technologies.

Claims

A kind of method of determining MIMO layer number characterized by comprising

Terminal is determined as the terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of the terminal scheduling, wherein, the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, and K is the positive integer more than or equal to 2；

When the terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than or equal to first preset value, the terminal will be sent to i-th of network equipment by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is the terminal scheduling adjusts first preset value；

When the terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to second preset value, the terminal will be sent to i-th of network equipment by the modulated second message of the first modulation system, so that the MIMO layer number that i-th of network equipment is the terminal scheduling adjusts second preset value；

Wherein, the corresponding MIMO layer number adjustment amount of i-th of network equipment is the MIMO layer number that the terminal i-th of network equipment according to known to the terminal is the terminal scheduling and i-th of network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines, first preset value is positive integer, second preset value is negative integer, i-th of network equipment is any network equipment in the K network equipment, and i is less than or equal to the positive integer of K.
The method as described in claim 1, which is characterized in that terminal be determined as the terminal provide service the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value after, further includes:

When the terminal determines that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than second preset value and is less than first preset value, the terminal will be sent to i-th of network equipment by the modulated first message of the second modulation system or second message, so that i-th of network equipment is not adjusted to the MIMO layer number of the terminal scheduling.
Method according to claim 2, which is characterized in that when the first message is ACK message, the second message is NACK message, and when the first message is NACK message, the second message is ACK message；

When first modulation system is binary phase shift keying BPSK, second modulation system is orthogonal binary phase shift keying QBPSK, and when first modulation system is QBPSK, second modulation system is BPSK.
The method according to claim 1, which is characterized in that terminal is determined as the terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of the terminal scheduling, comprising:

It is that the reference signal that the terminal is sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value；

If the terminal determines that the K network equipment is corresponding can be greater than the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm for the terminal to be the MIMO layer number maximum value of the terminal scheduling.
Method according to any of claims 1-4, it is characterized in that, the MIMO layer number that i-th of network equipment known to the terminal is the terminal scheduling refers to that the MIMO layer number that i-th of network equipment last time is the terminal scheduling or i-th of network equipment that the terminal last time determines can be the terminal scheduling MIMO layer number maximum value.
A kind of method of determining MIMO layer number characterized by comprising

Terminal is determined as the terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of the terminal scheduling, wherein, the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, and K is the positive integer more than or equal to 2；

The S network equipment of the terminal into the K network equipment sends corresponding MIMO layer number adjustment information, S≤K respectively；

Wherein, the corresponding MIMO layer number adjustment information of j-th of network equipment carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be the terminal scheduling, the corresponding MIMO layer number adjustment amount of j-th of network equipment is the MIMO layer number that the terminal j-th of network equipment according to known to the terminal is the terminal scheduling and j-th of network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines, j-th of network equipment is any network equipment in the S network equipment.
Method as claimed in claim 6, it is characterized in that, the MIMO layer number that j-th of network equipment known to the terminal is the terminal scheduling refers to the MIMO layer number that j-th of network equipment last time is the terminal scheduling or j-th of network equipment that the terminal last time determines can be the MIMO layer number maximum value of the terminal scheduling.
Method according to claim 6 or 7, which is characterized in that terminal is determined as the terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of the terminal scheduling, comprising:

It is that the reference signal that the terminal is sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value；

If the terminal determines that the K network equipment is corresponding can be greater than the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm for the terminal to be the MIMO layer number maximum value of the terminal scheduling.
Such as the described in any item methods of claim 6-8, which is characterized in that the S network equipment of the terminal into the K network equipment sends corresponding MIMO layer number adjustment information respectively, comprising:

The terminal sends corresponding confirmation ACK message or non-acknowledgement NACK message to the S network equipment respectively, and the corresponding ACK message of j-th of network equipment or NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be the terminal scheduling.
A kind of method of determining MIMO layer number characterized by comprising

The network equipment receives terminal and passes through the modulated first message of the first modulation system；

The network equipment is determining with first modulation system and corresponding first preset value of first message according to the corresponding relationship of modulation system, type of message and preset value, and will be the MIMO layer number of terminal scheduling adjustment first preset value；

Alternatively,

The network equipment receives the terminal and passes through the modulated second message of the first modulation system；

The network equipment is determining with first modulation system and corresponding second preset value of first message according to the corresponding relationship of the modulation system, type of message and preset value, and will be the MIMO layer number of terminal scheduling adjustment second preset value；

Wherein, first preset value is positive integer, and second preset value is negative integer.
Method as claimed in claim 10, which is characterized in that further include:

The network equipment receives the terminal and passes through the modulated first message of the second modulation system；

The network equipment determines according to the corresponding relationship of the modulation system, message and preset value and is not adjusted to the MIMO layer number of the terminal scheduling with second modulation system and the corresponding third preset value of the first message, the network equipment；

Alternatively,

The network equipment receives the terminal and passes through the modulated second message of the second modulation system；

The network equipment determines according to the corresponding relationship of the modulation system, message and preset value and is not adjusted to the MIMO layer number of the terminal scheduling with second modulation system and the corresponding third preset value of the second message, the network equipment；

Wherein, the third preset value is 0.
Method as claimed in claim 11, which is characterized in that when the first message is ACK message, the second message is NACK message, and when the first message is NACK message, the second message is ACK message；

When first modulation system is binary phase shift keying BPSK, second modulation system is orthogonal binary phase shift keying QBPSK, and when first modulation system is QBPSK, second modulation system is BPSK.
A kind of method of determining MIMO layer number characterized by comprising

The network equipment receives the MIMO layer number adjustment information that terminal is sent；

Wherein, the MIMO layer number adjustment information carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be the terminal scheduling, and the corresponding MIMO layer number adjustment amount of the network equipment is the MIMO layer number that terminal network equipment according to known to the terminal is the terminal scheduling and the network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines；

The network equipment is adjusted to the MIMO layer number of the terminal scheduling according to the MIMO layer number adjustment information.
Method as claimed in claim 13, it is characterized in that, the MIMO layer number that the network equipment known to the terminal is the terminal scheduling refers to the MIMO layer number that the network equipment last time is the terminal scheduling or the network equipment that the terminal last time determines can be the MIMO layer number maximum value of the terminal scheduling.
Method according to claim 13 or 14, which is characterized in that the network equipment receives the MIMO layer number adjustment information that terminal is sent, comprising:

The network equipment receives the ACK message or NACK message that the terminal is sent, and the ACK message or the NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be the terminal scheduling.
A kind of terminal characterized by comprising memory, processor and transceiver, in which:

The memory is stored with instruction；

The transceiver is used for and the network device communications；

The processor, the instruction for calling the memory to store, performs the following operations when executing described instruction:

It is determined as the terminal it is corresponding to provide the K network equipment serviced being the MIMO layer number maximum value of the terminal scheduling, wherein, the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, and K is to be greater than or wait In 2 positive integer；

When determining that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than or equal to first preset value, i-th of network equipment will be sent to by the transceiver by the modulated first message of the first modulation system, so that the MIMO layer number that i-th of network equipment is the terminal scheduling adjusts first preset value；

When determining that the corresponding MIMO layer number adjustment amount of i-th of network equipment is less than or equal to second preset value, i-th of network equipment will be sent to by the transceiver by the modulated second message of the first modulation system, so that the MIMO layer number that i-th of network equipment is the terminal scheduling adjusts second preset value；

Wherein, the corresponding MIMO layer number adjustment amount of i-th of network equipment is the MIMO layer number that the terminal i-th of network equipment according to known to the terminal is the terminal scheduling and i-th of network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines, first preset value is positive integer, second preset value is negative integer, i-th of network equipment is any network equipment in the K network equipment, and i is less than or equal to the positive integer of K.
Terminal as claimed in claim 16, which is characterized in that the processor is also used to:

Be determined as the terminal provide service the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value after, when determining that the corresponding MIMO layer number adjustment amount of i-th of network equipment is greater than second preset value and is less than first preset value, i-th of network equipment will be sent to by the transceiver by the modulated first message of the second modulation system or second message, so that i-th of network equipment is not adjusted to the MIMO layer number of the terminal scheduling.
Terminal as claimed in claim 17, which is characterized in that when the first message is ACK message, the second message is NACK message, and when the first message is NACK message, the second message is ACK message；

When first modulation system is binary phase shift keying BPSK, second modulation system is orthogonal binary phase shift keying QBPSK, and when first modulation system is QBPSK, second modulation system is BPSK.
Such as the described in any item terminals of claim 16-18, which is characterized in that the processor be determined as the terminal provide service the K network equipment it is corresponding can be for the MIMO layer number maximum value of the terminal scheduling when, be specifically used for:

It is that the reference signal sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value；

If it is determined that the K network equipment is corresponding to be greater than the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm to be the MIMO layer number maximum value of the terminal scheduling.
Such as the described in any item terminals of claim 16-19, it is characterized in that, the MIMO layer number that i-th of network equipment known to the terminal is the terminal scheduling refers to the MIMO layer number that i-th of network equipment last time is the terminal scheduling or i-th of network equipment that the terminal last time determines can be the MIMO layer number maximum value of the terminal scheduling.
A kind of terminal characterized by comprising memory, processor and transceiver, wherein

The memory is stored with instruction；

The processor, the instruction for calling memory to store, performs the following operations when executing described instruction:

It is determined as the terminal it is corresponding to provide the K network equipment serviced being the terminal scheduling MIMO layer number maximum value, wherein the K network equipment is corresponding can be less than or equal to the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, and K is the positive integer more than or equal to 2；

The transceiver sends corresponding MIMO layer number adjustment information, S≤K for the S network equipment into the K network equipment respectively；

Wherein, the corresponding MIMO layer number adjustment information of j-th of network equipment carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be the terminal scheduling, the corresponding MIMO layer number adjustment amount of j-th of network equipment is the MIMO layer number that the terminal j-th of network equipment according to known to the terminal is the terminal scheduling and j-th of network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines, j-th of network equipment is any network equipment in the S network equipment.
Terminal as claimed in claim 21, it is characterized in that, the MIMO layer number that j-th of network equipment known to the terminal is the terminal scheduling refers to the MIMO layer number that j-th of network equipment last time is the terminal scheduling or j-th of network equipment that the terminal last time determines can be the MIMO layer number maximum value of the terminal scheduling.
Terminal as described in claim 21 or 22, which is characterized in that the processor be determined as the terminal provide service the K network equipment it is corresponding can be for the MIMO layer number maximum value of the terminal scheduling when, be specifically used for:

It is that the reference signal sent respectively according to the K network equipment carries out channel estimation as a result, determine the K network equipment it is corresponding can be the terminal scheduling MIMO layer number maximum value；

If it is determined that the K network equipment is corresponding can be greater than the MIMO layer number maximum value that the terminal is capable of handling for the summation of the MIMO layer number maximum value of the terminal scheduling, it is corresponding, which to redefine the K network equipment, according to preset algorithm for the terminal to be the MIMO layer number maximum value of the terminal scheduling.
Such as the described in any item terminals of claim 21-23, which is characterized in that when the S network equipment of the transceiver into the K network equipment sends corresponding MIMO layer number adjustment information respectively, be specifically used for:

Corresponding confirmation ACK message or non-acknowledgement NACK message are sent respectively to the S network equipment, and the corresponding ACK message of j-th of network equipment or NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of j-th of network equipment that j-th of network equipment can be the terminal scheduling.
A kind of network equipment characterized by comprising memory, processor and transceiver, wherein

The memory is stored with instruction；

The transceiver passes through the modulated first message of the first modulation system for receiving terminal；

The processor, the instruction for calling the memory to store, performs the following operations when executing described instruction:

It is determining with first modulation system and corresponding first preset value of first message according to the corresponding relationship of modulation system, type of message and preset value, and will be the MIMO layer number of terminal scheduling adjustment first preset value；

Alternatively,

The transceiver passes through the modulated second message of the first modulation system for receiving the terminal；

The processor, the instruction for calling the memory to store, performs the following operations when executing described instruction:

It is determining with first modulation system and corresponding second preset value of second message according to the corresponding relationship of the modulation system, type of message and preset value, and described second will be adjusted for the MIMO layer number of the terminal scheduling and preset Value；

Wherein, first preset value is positive integer, and second preset value is negative integer.
The network equipment as claimed in claim 25, which is characterized in that the transceiver is also used to receive the terminal and passes through the modulated first message of the second modulation system；

The processor, is also used to the corresponding relationship according to the modulation system, message and preset value, and determination is not adjusted to the MIMO layer number of the terminal scheduling with second modulation system and the corresponding third preset value of the first message, the network equipment；

Alternatively,

The transceiver is also used to receive the terminal and passes through the modulated second message of the second modulation system；

The processor, is also used to the corresponding relationship according to the modulation system, message and preset value, and determination is not adjusted to the MIMO layer number of the terminal scheduling with second modulation system and the corresponding third preset value of the second message, the network equipment；

Wherein, the third preset value is 0.
The network equipment as claimed in claim 26, which is characterized in that when the first message is ACK message, the second message is NACK message, and when the first message is NACK message, the second message is ACK message；

When first modulation system is binary phase shift keying BPSK, second modulation system is orthogonal binary phase shift keying QBPSK, and when first modulation system is QBPSK, second modulation system is BPSK.
A kind of network equipment characterized by comprising memory, processor and transceiver, wherein

The memory is stored with instruction；

The transceiver, for receiving the MIMO layer number adjustment information of terminal transmission；

Wherein, the MIMO layer number adjustment information carries the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be the terminal scheduling, and the corresponding MIMO layer number adjustment amount of the network equipment is the MIMO layer number that terminal network equipment according to known to the terminal is the terminal scheduling and the network equipment can be that the MIMO layer number maximum value of the terminal scheduling determines；

The processor, the instruction for calling the memory to store, performs the following operations when executing described instruction:

The MIMO layer number of the terminal scheduling is adjusted to according to the MIMO layer number adjustment information.
The network equipment as claimed in claim 28, it is characterized in that, the MIMO layer number that the network equipment known to the terminal is the terminal scheduling refers to the MIMO layer number that the network equipment last time is the terminal scheduling or the network equipment that the terminal last time determines can be the MIMO layer number maximum value of the terminal scheduling.
The network equipment as described in claim 28 or 29, which is characterized in that when the transceiver receives the MIMO layer number adjustment information that terminal is sent, be specifically used for:

ACK message or NACK message that the terminal is sent are received, the ACK message or the NACK message carry the MIMO layer number maximum value or the corresponding MIMO layer number adjustment amount of the network equipment that the network equipment can be the terminal scheduling.