RU2781815C1 - Data transmission method and device, system and information carrier - Google Patents

Abstract

FIELD: communications.

SUBSTANCE: invention relates to the field of communications. To achieve the effect, the data transmission method performed by the network device includes: defining an indication signaling to indicate a combination of data streams containing a plurality of data streams, wherein the plurality of data streams are grouped into at least two groups of data streams, and one or more data streams in each of at least two groups of data streams corresponds to the direction of the beam; and signaling indication transmission.

EFFECT: increase in throughput when data is transmitted and received simultaneously along beams of several directions.

22 cl, 8 dwg, 1 tbl

Description

FIELD OF TECHNOLOGY TO WHICH THE INVENTION RELATES

[0001] The present invention relates to the field of communications and, in particular, to a method and apparatus for data transmission, as well as to a system and an information carrier.

BACKGROUND OF THE INVENTION

[0002] In New Radio (NR) technology, data transmission is typically done on a beam basis, for example, by beamforming and steering to provide the necessary coverage and reduce propagation loss.

[0003] In transmitting data using beams, a network device (eg, a base station) signaling transmits a Transmission Configuration Indication (TCI) state or spatial relationship information (spatialrelationinfo) to indicate a receive beam and a transmit beam to the terminal. Each TCI state or each spatial relationship information corresponds to a reference signal identifier (RS, Reference Signal). The reference signal RS can be a non-zero reference signal of information about the state of the channel (CSI-RS, Channel State Information Reference Signal), a block of synchronization signals (SSB, Synchronization Signal Block) or a sounding reference signal (SRS, Sounding Reference Signal). Thus, using the TCI state or the spatial relationship information, it is possible to notify the terminal that it should receive the Physical Downlink Control Channel (PDCCH) or the Physical Downlink Shared Channel (PDSCH) using the same receive beam that is used to receive signals. SSB or CSI-RS from the base station, or using a receive beam that matches the transmit beam that is used to transmit the SRS signal. In addition, using the TCI state or the spatial relationship information, it is possible to notify the terminal that it should transmit a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) using the same transmission beam that is used to transmit the signal. SRS, or using a transmit beam that matches the receive beam used to receive SSB or CSI-RS signals.

[0004] The MIMO system (Multiple-Input Multiple-Output) in the future will be able to support data transmission based on several points of reception / transmission (TRP, Transmission Reception Point) or several antenna panels. That is, the transmission and reception of data occurs simultaneously in several beams of different directions. Each TRP or panel supports the transmission of multiple data streams. There are various combinations of multiple data streams.

[0005] However, when data is transmitted and received simultaneously along the beams of several directions, if the terminal incorrectly receives the receive or transmit beam corresponding to each data stream indicated by the base station, errors may occur when receiving data by the terminal or base station, which leads to a decrease in throughput.

SUMMARY OF THE INVENTION

[0006] In order to solve the problems of existing technical solutions, the present invention proposes a data transmission method and device, as well as a system and an information carrier.

[0007] According to a first aspect of the embodiments of the invention, a data transmission method for a network device is provided. According to this method, indication signaling is determined to indicate a combination of data streams containing a plurality of data streams, wherein the plurality of data streams are grouped into at least two groups of data streams, and one or more data streams in each of at least two groups of data streams correspond to the direction beam; and transmit an indication signal.

[0008] In some embodiments, the indication signaling is transmitted in the first downlink control information (DCI). The first DCI contains the first bit and the first bit contains one bit. Different values of the first bit are configured to indicate different combinations of data streams.

[0009] In some embodiments, the implementation of the first bit contains a bit with a reserved value in the first DCI.

[0010] In some embodiments, the indication signaling is sent to the second DCI. The second DCI contains the second bit and the second bit contains two bits. Different values of one bit in the second bit or different values of all bits in the second bit are configured to indicate different combinations of streams.

[0011] In some embodiments, one or more bits of the second bit are one or more bits with reserved values in the second DCI.

[0012] In some embodiments, the indication signaling is transmitted in the first radio resource control (RRC) signaling. The first RRC signaling is configured to indicate at least one combination of data streams.

[0013] In some embodiments, the indication signaling is sent in the second RRC signaling and medium access control (MAC) signaling. The second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to 1.

[0014] In some embodiments, each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting at least one bit.

[0015] In some embodiments, the MAC signaling comprises M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1.

[0016] In some embodiments, the indication signaling is transmitted in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling.

[0017] According to a second aspect of the embodiments of the invention, a data transmission method is provided for a terminal. According to this method, indication signaling is received to indicate a combination of data streams containing a plurality of data streams, wherein the plurality of data streams are grouped into at least two groups of data streams, and one or more data streams in each of at least two groups of data streams correspond to the direction beam; determining a beam for transmitting each data stream in the data stream combination indicated by the indication signaling based on the data stream combination, and transmitting the data stream in the data stream combination using this beam.

[0018] In some embodiments, the indication signaling is received in the first DCI. The first DCI contains the first bit and the first bit contains one bit. Different values of the first bit are configured to indicate different combinations of data streams.

[0019] In some embodiments, the implementation of the first bit contains a bit with a reserved value in the first DCI.

[0020] In some embodiments, the indication signaling is received in the second DCI. The second DCI contains the second bit and the second bit contains two bits. Different values of one bit in the second bit or different values of all bits in the second bit are configured to indicate different combinations of streams.

[0021] In some embodiments, one or more bits of the second bit are one or more bits with reserved values in the second DCI.

[0022] In some embodiments, the indication signaling is received in the first RRC signaling. The first RRC signaling is configured to indicate at least one combination of data streams.

[0023] In some embodiments, the indication signaling is received in the second RRC signaling and in the MAC signaling. The second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to 1.

[0024] In some embodiments, each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting on at least one bit.

[0025] In some embodiments, the MAC signaling comprises M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1.

[0026] In some embodiments, the indication signaling is received in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling.

[0027] According to a third aspect of the embodiments of the invention, there is provided a data transmission device for a network device. The device consists of a defining unit and a transmitting unit.

[0028] The determining block is configured to determine the indication signaling for indicating the combination of data streams. The data stream combination comprises a plurality of data streams, wherein the plurality of data streams are grouped into at least two data stream groups, and one or more data streams in each of the at least two data stream groups correspond to the beam direction. The transmitter unit is configured to transmit the indication signaling.

[0029] In some embodiments, the transmitter unit is configured to transmit indication signaling in the first DCI. The first DCI contains the first bit and the first bit contains one bit. Different values of the first bit are configured to indicate different combinations of data streams.

[0030] In some embodiments, the implementation of the first bit contains a bit with a reserved value in the first DCI.

[0031] In some embodiments, the transmitter unit is configured to transmit indication signaling to the second DCI. The second DCI contains the second bit and the second bit contains two bits. Different values of one bit in the second bit or different values of all bits in the second bit are configured to indicate different combinations of streams.

[0032] In some embodiments, one or more bits of the second bit are one or more bits with reserved values in the second DCI.

[0033] In some embodiments, the transmitter unit is configured to transmit indication signaling in the first RRC signaling. The first RRC signaling is configured to indicate at least one combination of data streams.

[0034] In some embodiments, the transmitter unit is configured to transmit indication signaling in the second RRC signaling and in the MAC signaling. The second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to 1.

[0035] In some embodiments, each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting on at least one bit.

[0036] In some embodiments, the MAC signaling comprises M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1.

[0037] In some embodiments, the transmitter unit is configured to transmit indication signaling in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling.

[0038] According to a fourth aspect of the embodiments of the invention, a data communication apparatus for a terminal is provided. The device consists of a receiving unit and a determining unit.

[0039] The receiving unit is configured to receive indication signaling to indicate a combination of data streams. The data stream combination comprises a plurality of data streams, wherein the plurality of data streams are grouped into at least two data stream groups, and one or more data streams in each of the at least two data stream groups correspond to the beam direction. The determining unit is configured to determine a beam for transmitting each data stream in the data stream combination indicated by the indication signaling based on the data stream combination, and to transmit the data stream in the data stream combination using that beam.

[0040] In some embodiments, the receiving unit is configured to receive indication signaling in the first DCI. The first DCI contains the first bit, and the first bit contains one bit, and different values of the first bit are configured to indicate different combinations of data streams.

[0041] In some embodiments, the first bit contains a bit with a reserved value in the first DCI.

[0042] In some embodiments, the receiving unit is configured to receive indication signaling in the second DCI. The second DCI contains the second bit and the second bit contains two bits. Different values of one bit in the second bit or different values of all bits in the second bit are configured to indicate different combinations of streams.

[0043] In some embodiments, one or more bits of the second bit are one or more bits with reserved values in the second DCI.

[0044] In some embodiments, the receiving unit is configured to receive the indication signaling in the first RRC signaling. The first RRC signaling is configured to indicate at least one combination of data streams.

[0045] In some embodiments, the receiving unit is configured to receive indication signaling in the second RRC signaling and in the MAC signaling. The second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to 1.

[0046] In some embodiments, each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting on at least one bit.

[0047] In some embodiments, the MAC signaling comprises M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1.

[0048] In some embodiments, the receiving unit is configured to receive indication signaling in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling.

[0049] According to a fifth aspect of the present invention, a communication system is provided. The communication system comprises a communication device dedicated to a network device according to the third aspect or any embodiment of the third aspect and a communication device dedicated to a terminal according to the fourth aspect or any embodiment of the fourth aspect.

[0050] According to a sixth aspect of the embodiments of the invention, a data transmission device for a network device is provided. The data transfer device comprises a processor and a memory configured to store instructions executable by the processor. The processor is configured to perform the data transmission method according to the first aspect or any embodiment of the first aspect of the invention.

[0051] According to a seventh aspect of embodiments of the invention, a computer-readable storage medium that stores instructions is provided. When the processor of the network device executes the instructions stored on the storage medium, this causes the network device to perform the data transfer method according to the first aspect or any embodiment of the first aspect of the invention.

[0052] According to an eighth aspect of the embodiments of the invention, a data transmission apparatus for a terminal is provided. The data transfer device comprises a processor and a memory configured to store instructions executable by the processor. The processor is configured to implement the data transmission method according to the second aspect or any embodiment of the second aspect of the invention.

[0053] According to a ninth aspect of embodiments of the invention, a computer-readable storage medium is provided on which instructions are stored. When the terminal's processor executes the instructions stored on the storage medium, it causes the terminal to perform a data transmission method according to the second aspect or any embodiment of the second aspect of the invention.

[0054] The technical solutions proposed in the embodiments of the present invention may provide the following beneficial results. With the indication signaling indicating the combination of data streams, the terminal determines a beam for transmitting each data stream in the combination of transmitted data streams based on the combination of data streams indicated by the indication signaling, and uses the determined beam to transmit each data stream in the combination of data streams, so that the stream data is accurately received or transmitted, and throughput is improved.

[0055] It should be understood that the foregoing general description and the following detailed description are for exemplary and illustrative purposes only and should not limit the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the present invention.

[0057] FIG. 1 is a block diagram of a wireless communication system in accordance with some embodiments of the present invention.

[0058] FIG. 2 is a block diagram illustrating a method for transmitting data in accordance with one embodiment of the present invention.

[0059] FIG. 3 is a block diagram illustrating another data transmission method in accordance with one embodiment of the present invention.

[0060] FIG. 4 is a block diagram illustrating yet another data transmission method in accordance with one embodiment of the present invention.

[0061] FIG. 5 is a block diagram of a data communication device according to one embodiment of the present invention.

[0062] In FIG. 6 is a block diagram of another data communication device in accordance with one embodiment of the present invention.

[0063] FIG. 7 is a block diagram of a data communication device according to one embodiment of the present invention.

[0064] FIG. 8 is a block diagram of another data communication device in accordance with one embodiment of the present invention.

DETAILED DESCRIPTION

[0065] The following is a detailed description of possible embodiments of the invention, examples of which are shown in the drawings. In the following references to the drawings, like reference numbers in different drawings denote the same or similar elements, unless otherwise indicated. The implementations of possible embodiments discussed below do not exhaust all possible implementations that are consistent with the present invention. On the contrary, they are merely examples of devices and methods that are consistent with the aspects of the present invention as set forth in the appended claims.

[0066] The communication method proposed in the embodiments of the present invention may be applied to the wireless communication system 100 shown in FIG. 1. The wireless communication system 100 shown in FIG. 1 may include a base station 110 and a terminal 120. Terminal 120 is connected to and communicates with network device 110 using wireless resources.

[0067] It should be understood that the wireless communication system 100 shown in FIG. 1 is for example only. Wireless communication system 100 may also include other network devices such as core network devices, wireless relay devices, and wireless transport network devices that are not shown in FIG. 1. Embodiments of the present invention do not limit the number of network devices and the number of terminals included in a wireless communication system.

[0068] It should also be understood that the wireless communication system in the embodiments of the present invention is a network that provides wireless communication functions. Various communication technologies can be used in wireless communication systems, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA, time division multiple access), multiple access with frequency division (FDMA, frequency division multiple access), multiple access with orthogonal frequency division (OFDMA, orthogonal frequency-division multiple access), single carrier FDMA (SC-FDMA, single carrier FDMA) , carrier sense multiple access with collision avoidance (CSMA/CA). According to capacity, speed, latency and other factors, networks can be divided into 2G networks (second generation wireless telephony technology), 3G networks (third generation wireless telephony technology), 4G networks (fourth generation wireless telephony technology), and further networks. developments such as 5G networks (fifth generation wireless telephony technology). The 5G network is also called the New Radio (NR, New Radio) network. For ease of description in the present invention, a wireless communication network is sometimes referred to simply as a network.

[0069] In addition, the network device 110 of the present invention may also be referred to as a wireless access network device. The wireless access network device may be, for example, a base station, an evolved Node B, a home base station, an access point (AP) of a WI-FI wireless communication system, a wireless relay node, a wireless transport node, a transmission point (TP). ) or transmission and reception point (TRP, transmission and reception point). The wireless access network device may be a gNB in an NR system, or may be a component or part of a device that is part of a base station. It should be understood that the embodiments of the present invention are not limited to the specific technology and specific form used in the network device. In the present invention, a network device can provide communication coverage of a certain geographic area and can communicate with terminals located in the coverage area (cell). In addition, if the communication system is a vehicle-to-vehicle (V2X) communication system, the network device may also be installed in the vehicle.

[0070] In addition, the terminal 120 considered in the present invention may also be called a terminal device, user equipment (UE, user equipment), mobile station (MS, mobile station) or mobile terminal (MT, mobile terminal), which are varieties devices through which the user can get voice and/or data communications. For example, the terminal may be a wearable device or a device installed in a vehicle having a wireless connection function. At present, the terminal may be a mobile phone, a pocket personal computer (PPC), a handheld computer, a personal digital assistant (PDA), a laptop computer, a tablet computer, a portable device, or an automotive device. In addition, if the communication system is a V2X communication system, the network device may also be installed in the vehicle. It should be understood that the embodiments do not limit the particular technology and particular form of the terminal.

[0071] The communication between the network device 110 and the terminal 120 contemplated in the present invention is based on beams. In a beam-based data transmission process, the network device 110 uses multiple TRPs/panels to transmit data simultaneously, with each TRP/panel transmitting data using a transmission beam of one direction. Accordingly, terminal 120 must use multiple panels to receive data simultaneously, with each panel using one receive beam to receive data. For beam-based reception, TCI state or spatial relationship information is configured to tell terminal 120 to use the same receive beam when receiving PDCCH/PDSCH that was used when receiving SSB or CSI-RS signals from network device 110. , or use a receive beam corresponding to the same transmit beam that was used when transmitting the SRS signal.

[0072] In the prior art, the network device 110 indicates the TCI state or spatial relationship information using DCI signaling. The TCI state or the spatial relationship information may be used as the beam indication information to indicate the direction of the beam. In the present invention, the beam direction includes an up beam direction and a down beam direction. When the data stream is downstream, the beam direction corresponds to the downstream reception beam direction, which is configured to represent the downstream reception beam corresponding to each data stream. When the data flow is uplink, the beam direction corresponds to the uplink beam direction, which is configured to represent the uplink transmission beam corresponding to the data flow.

[0073] If we consider the PDSCH channel as an example, then if two data streams are transmitted in it, then different transport blocks (TV, transport blocks) are transmitted in different data streams. If different TV blocks are transmitted by the same panel of the same TRP, then the TCI states corresponding to these two data streams are consistent. Considering two blocks TB1 and TB2 as an example, the corresponding DCI signaling may be as follows.

For transport block 1:

- modulation and coding scheme - 5 bits according to subparagraph x.x of the technical specification [6, TS 38.214];

- indicator of new data - 1 bit;

- redundancy version - 2 bits according to table 7.3.1.1.1-2.

For transport block 2 (only present if Number-MCS-HARQ-DL-DCI is 2):

modulation and coding scheme - 5 bits according to subparagraph x.x of the technical specification [6, TS 38.214];

- indicator of new data - 1 bit;

- redundancy version - 2 bits according to table 7.3.1.1.1-2.

……

- transmission configuration indication - bit 0 if the top-level parameter tci-PresentInDCI is not enabled; otherwise 3 bits according to subclause x.x of the technical specification [6, TS38.214].

[0074] It can be seen from the DCI signaling described above that although TB1 and TB2 are transmitted on different data streams, the corresponding TCI states of TB1 and TB2 are the same, i.e., the network device 110 tells the terminal 120 that in order to receive the TV blocks of both streams data, the same receiving beam must be used.

[0075] The TCI status is shown in Table 1 below. Terminal 120 may determine a receive beam based on the TCI state.

[0076] Current solutions use a code point to indicate TCI status or spatial relationship information. One TCI code point or spatial relation information code point can indicate at most two TCI states or two spatial relation information, that is, the beam directions of the two TRPs/antenna panels.

[0077] Typically, one DCI indication may indicate no more than a few data streams from two TRPs/panels, for example, it may indicate no more than 4 data streams from two TRPs or panels. Different combinations can correspond to no more than 4 data streams. Each combination can refer to either of the two TRPs/Panels. Therefore, the terminal cannot determine which combination of data streams belongs to which TRP/panel, which causes a failure in receiving the data stream, resulting in a decrease in the reception success rate and throughput. For example, combinations containing up to 4 data streams indicated by DCI could be: "1 data stream + 1 data stream", "1 data stream + 2 data streams", "2 data streams + 1 data stream", " 2 data streams+2 data streams", "1 data stream+3 data streams" and "3 data streams+1 data stream".

[0078] In the case of the above combinations, if the network device 110 does not have additional signaling instructions, the combination "1 data stream + 1 data stream" between the network device 110 and the terminal 120 does not contain ambiguity, that is, if two data streams are specified, each of them corresponds to one TRP/panel. If the combinations "1 data stream+3 data streams" and "3 data streams+1 data stream" are not supported, the "2 data streams+2 data streams" configuration is also not ambiguous, that is, if 4 data streams are specified, then every 2 data streams refer to one TRP/panel.

[0079] Ambiguous combinations occur in the following situations. If three data streams are indicated, it is difficult to determine which combination is meant: the combination "1 data stream + 2 data streams", i.e. the first data stream belongs to the first TRP/panel and the other two data streams to the second TRP/panel, or the combination "2 data streams + 1 data stream", i.e. the first two data streams refer to the first TRP/panel and the last data stream to the second TRP/panel. In addition, if the combinations "1 data stream + 3 data streams" and "3 data streams + 1 data stream" are also supported, then if 4 data streams are specified, 3 types of ambiguous combinations may occur: "1 data stream + 3 data streams" , "3 data streams+1 data stream" and "2 data streams+2 data streams". If terminal 120 cannot know exactly which combination is being used, it cannot obtain correct receive configuration information such as the TCI state for some data streams, and using an incorrect TCI state may result in data reception failure and reduced throughput.

[0080] Similarly, when a terminal needs to transmit a plurality of data streams to a network device to transmit a PUSCH, the network device can also clearly indicate to the terminal which transmission beam to use for each data stream. Otherwise, if the network device instructs the terminal to transmit the second data stream in the first beam direction, and the terminal actually transmits the second data stream in the second beam direction, the network device receives the second data stream in the beam direction corresponding to the first beam direction, and the inconsistency terminal and the network device cause the network device to fail to receive, reducing throughput. The network device informs the terminal of the transmit beam based on the TCI state or the spatial relationship information.

[0081] In this regard, the present invention proposes such a data transmission method so that the terminal can accurately know the TCI state or the spatial relationship information, and accurately determine the beam direction corresponding to each data stream in the combination of data streams, so as to use the beam corresponding to a certain direction of the beam, for transmitting a data stream when different TV blocks are transmitted by different TRPs/panels when transmitting data using multiple TRPs/panels. In a data transmission method based on indication signaling indicating a combination of data streams, a terminal may determine a beam for transmitting each data stream in the combination of data streams based on the combination of data streams indicated by the indication signaling, and use the determined beam to transmit each data stream in the combination of streams. data.

[0082] Obviously, all data streams in the data stream combination considered in the present invention refer to data streams in the data stream combination to be transmitted by the terminal, or to the data stream combination to be received by the terminal. All beams of all data streams in a combination of data streams may be terminal receive beams or terminal transmit beams.

[0083] In accordance with the present invention, the terminal can accurately determine the reception beam of each data stream in the combination of data streams to be received by the terminal, based on the indication signaling to indicate the combination of data streams, and use this reception beam to receive each data stream in the combination of data streams. . Alternatively, the terminal may accurately determine the transmission beam of each data stream in the data stream combination to be transmitted by the terminal based on the indication signaling to indicate the data stream combination, and use this transmission beam to transmit each data stream in the data stream combination. This improves the success rate of data receptions and throughput.

[0084] FIG. 2 is a flowchart of a data transmission method in accordance with one embodiment. As shown in FIG. 1, the communication method is applicable to the network device. The method includes the following.

[0085] In step S11, the indication signaling is determined.

[0086] In the present invention, this specific indication signaling is configured to indicate a combination of data streams. The data stream combination comprises a plurality of data streams. The plurality of data streams are grouped into at least two data stream groups. One or more data streams in each of at least two groups of data streams correspond to the direction of the beam. For example, if the combination of data streams is a combination of "1 data stream + 3 data streams", then this combination includes 4 data streams. These 4 data streams are grouped into two groups, namely "1 data stream and 3 data streams", where 1 data stream corresponds to one beam direction (from the same TRP/panel), and 3 data streams corresponds to one beam direction (from the same TRP/panel).

[0087] It should be appreciated that all data streams indicated in one DCI signaling may be downstream data streams, with each combination of data streams corresponding to the direction of the receiving beam of the terminal. All data streams scheduled in one DCI signaling may also be upstream data streams, with each combination of data streams corresponding to the direction of the terminal's transmit beam.

[0088] In step S12, indication signaling is transmitted.

[0089] In the present invention, the indication signaling is transmitted by the network device. After receiving the indication signaling, the terminal may determine the beam direction corresponding to each combination of data streams in the combination of data streams based on the combination of data streams indicated by the indication signaling. The terminal may determine the receive beam for each data stream combination in the data stream combination and use the receive beam to receive each data stream in the data stream combination to improve the data reception success rate, or determine the transmit beam for each data stream combination in the data stream combination and use a transmission beam for transmitting each data stream in a combination of data streams to improve throughput.

[0090] Some embodiments in which the network device transmits indication signaling will be described below.

[0091] In some embodiments, the indication signaling is sent to the DCI.

[0092] In the present invention, the indication signaling may be DCI signaling. The value(s) of the bit(s) included(s) in DCI signaling indicate a combination of data streams, with different bit(s) values configured to indicate different combinations of data streams. If the terminal can determine all combinations of data streams and maintain a correspondence between the value(s) of the bit(s) and combinations of data streams, then by obtaining the value(s) of the bit(s) transmitted in the DCI, the combination of data streams can be determined.

[0093] All data stream combinations that the terminal supports may be reported by the network device using RRC signaling, or all supported data stream combinations may be stored in the terminal and the network device using a method predetermined by the system.

[0094] In some embodiments, two different combinations of data streams may be indicated by different values of one bit. For example, 4 data streams are supported as a maximum, while two combinations of data streams "1 data stream + 3 data streams" and "3 data streams + 1 data stream" are not included in all supported data stream combinations. The invention can indicate a combination when there are 3 data streams, namely "1 data stream + 2 data streams" or "2 data streams + 1 data stream", that is, indicate this with one bit, the different values of which correspond to different combinations of data streams . For example, if the bit value is 0, then it corresponds to the combination "2 data streams+1 data stream", and if the bit value is 1, then it corresponds to the combination "1 data stream+2 data streams". Of course, the present invention does not limit the correspondence between bit values and combinations. For example, if the bit value is 1, then it corresponds to the combination "2 data streams+1 data stream", and if the bit value is 0, then it corresponds to the combination "1 data stream+2 data streams".

[0095] For the convenience of describing the present invention, the DCI used to indicate the combination of data streams with 1 bit is called the first DCI, and 1 bit is the first bit. The first DCI contains the first bit. The number of bits in the first bit is 1. Different values of the first bit are configured to indicate different combinations of data streams.

[0096] In the present invention, the first bit may be a bit configured separately to indicate a combination of data streams in the first DCI, or a bit with a reserved bit value in the first DCI. The reserved bit value indicates the combination of data streams, and the value of the busy bit may indicate other information than the combination of data streams, such as antenna port information.

[0097] In the present invention, the network device transmits indication signaling with the first DCI, so after receiving the first DCI, the terminal can determine the combination of data streams based on the bit value and further determine the beam direction.

[0098] In the present invention, different bit values are configured to indicate different combinations of data streams. For example, up to 4 combinations of data streams are supported as a maximum, and the combinations can be: “1 data stream + 2 data streams”, “2 data streams + 1 data stream”, “2 data streams + 2 data streams”, “1 stream data+3 data streams" and "3 data streams+1 data stream". In addition to specifying the data stream combination "1 data stream+2 data streams" or "2 data streams+1 data stream" when the number of data streams is 3, it is also required to specify one of the following data stream combinations when the number of data streams is 4 : "2 data streams+2 data streams", "1 data stream+3 data streams" and "3 data streams+1 data stream". In the present invention, different values of at least 2 bits may be configured to indicate a data stream combination of up to 4 data streams.

[0099] On the one hand, if according to the present invention, the number of supported data streams does not exceed 3, different values of one of the plurality of bits can be configured to indicate different combinations of data streams. For example, the combinations "1 data stream+2 data streams" and "2 data streams+1 data stream" may be indicated by different values of the least significant or most significant of the two bits. For example, if the value of the least significant of two bits is 0, then it corresponds to the combination "2 data streams+1 data stream", and if the value of the least significant of two bits is 1, then this corresponds to the combination "1 data stream+2 data streams". Of course, the present invention does not limit the correspondence between bit values and combinations. For example, it could also be that if the value of the least significant of the two bits is 1, then this corresponds to the combination "2 data streams + 1 data stream", and if the value of the least significant of the two bits is 0, then this corresponds to the combination "1 data stream + 2 data flow".

[00100] On the one hand, if according to the present invention the number of supported data streams does not exceed 4, different values of two of the plurality of bits can be configured to indicate different combinations of data streams. For example, in the present invention, the combinations of "1 data stream+2 data streams", "2 data streams+1 data stream", "2 data streams+2 data streams", "1 data stream+3 data streams", and "3 data streams +1 data stream" may be indicated by different values of two bits. For example, if the values of two bits are 00, then this means the combination "1 data stream + 3 data streams". If the values of two bits are 01, then this means the combination "2 data streams + 2 data streams". If the values of two bits are equal to 10, then this means the combination "3 data streams + 1 data stream". Of course, the present invention does not limit the correspondence between bit values and data stream combinations, and other mappings may be used. For example, if the values of two bits are 11, then this may mean the combination "3 data streams + 1 data stream".

[00101] For the convenience of describing the present invention, a DCI containing a plurality of bits may be referred to as a second DCI, wherein the second DCI contains a second bit, and the number of bits included in the second bit may be 2. To indicate different combinations of streams, different values of one bit in the second bit, or different values of all bits in the second bit.

[00102] In the present invention, one or more bits of the second bit are one or more bits with reserved values in the second DCI. Reserved bit values indicate a combination of data streams, and a busy bit value may indicate other information than the combination of data streams, such as antenna port information.

[00103] In the present invention, the network device transmits indication signaling with the second DCI, so after receiving the second DCI, the terminal can determine the combination of data streams based on the bit values and further determine the beam direction.

[00104] In some embodiments, the indication signaling is carried in RRC signaling.

[00105] In some embodiments of the invention, TRP/panels are configured with RRC signaling, and multiple combinations of data streams supported by multiple TRPs/panels can be configured. The RRC signaling indicates at least one combination of data streams. For example, in the present invention, the data stream combinations supported by two TRPs/panels are configured. For example, the supported combination of data streams may be a combination of "1 data stream+1 data stream", "2 data streams+2 data streams", and "1 data stream+2 data streams".

[00106] After changing the combination of data streams that can be supported by multiple TRPs/panels according to the present invention, the configured combination of data streams is changed by RRC reconfiguration signaling. For example, if the supported pattern needs to be changed after some time, RRC reconfiguration signaling is configured to do so. For example, the supported data stream combination changes from the combination {"1 data stream+1 data stream", "2 data streams+2 data streams" and "1 data stream+2 data streams"} to the combination {"1 data stream+1 data stream data", "2 data streams+2 data streams" and "2 data streams+1 data stream"}, or you can also remove the combination "1 data stream+2 data streams" and add the combination "2 data streams+1 data stream" for RRC signaling configuration.

[00107] In the present invention, a single RRC signaling may be configured to indicate a combination of data streams. In the present invention, RRC signaling configured to indicate at least one combination of data streams is referred to as first RRC signaling. The network device transmits indication signaling for indicating the combination of data flows by transmitting the first RRC signaling. When a network device schedules resources, it sends DCI signaling to indicate the number of data streams and two beam directions. If the data stream is a downstream data stream, then the terminal upon receiving the first RRC signaling can determine a reception beam for receiving each data stream in the data stream combination based on the first RRC signaling and the number of data streams and 2 beam directions in the DCI scheduling signaling, and uses a reception beam to receive each data stream in the combination of data streams. If the data stream is an upstream data stream, then the terminal upon receiving the first RRC signaling can determine the transmit beam of each data stream in the data stream combination based on the first RRC signaling and the number of data streams and 2 beam directions in the DCI scheduling signaling, and uses a transmit beam for transmitting each data stream in the combination of data streams.

[00108] In some embodiments, the indication signaling is carried in RRC signaling and MAC signaling.

[00109] In the present invention, the RRC signaling may be configured to indicate N possible data stream combination sets supported, where N is a positive integer greater than or equal to 1. At least one of the N data stream combination sets is activated by MAC signaling.

[00110] In some embodiments, each set of N possible supported data stream combination sets indicated by the RRC signaling contains one data stream combination, i.e., the RRC signaling indicates N supported data stream combinations. The MAC signaling contains N bits, each of which corresponds to one combination of data streams, and at least one combination of data streams is activated by setting at least one bit. For example, if N is 6, it corresponds to the following combinations: "1 data stream+1 data stream", "1 data stream+2 data streams", "2 data streams+1 data stream", "2 data streams+2 data streams ”, “1 data stream + 3 data streams” and “3 data streams + 1 data stream”. The MAC signaling consists of 6 bits, each corresponding to one combination of data streams. When a bit is set, the corresponding combination of data streams is activated. For example, if the bit corresponding to the data stream pattern is set to 1, this means that the given data stream pattern is enabled and the terminal can use the enabled data stream pattern to determine the beam direction. For example, RRC signaling indicates all combinations in the above six data stream combinations. If N is 6, then the MAC signaling consists of 6 bits. The most significant of 6 bits, the leftmost bit corresponds to the combination "1 data stream + 1 data stream" ... the least significant bit, the rightmost bit corresponds to the combination "3 data streams + 1 data stream". When the bits in MAC signaling are 110100, it means that three data stream combinations are enabled: "1 data stream+1 data stream", "1 data stream+2 data streams", and "2 data streams+2 data streams".

[00111] In some embodiments, the MAC signaling may comprise M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to the activation of one set of data stream combinations, where M is a positive integer greater than or equal to 1 For example, RRC signaling indicates all combinations in the above 6 data stream combinations. If N is 6, M may be 3. To indicate different combinations of data streams among the six combinations of data streams, different values of three bits are configured. For example, LLC corresponds to the combination "1 data stream + 1 data stream", and 001 corresponds to the combination "1 data stream + 2 data streams". There is a one-to-one correspondence between values and combinations of data streams. This one-to-one correspondence must be stored in the network device and the terminal. Sets of data stream combinations can be activated using bit values. Each bit respectively activates one set of data stream combinations.

[00112] In the present invention, a method for activating data stream combination sets is indicated by RRC signaling using MAC signaling. If MAC signaling activates more than one data stream combination and it is possible to uniquely determine the current data stream combination in use, there are restrictions on simultaneous activation of data stream combinations by MAC signaling, i.e. MAC signaling cannot simultaneously activate ambiguous data stream combinations. For example, combinations "1 data stream+2 data streams" and "2 data streams+1 data stream" cannot be activated at the same time, as well as three combinations of data streams "1 data stream+3 data streams", "3 data streams+1 data stream" and "2 data streams+2 data streams" cannot be activated at the same time, and only one combination can be activated at the current time.

[00113] If, in the present invention, RRC signaling provides a limited number of data stream combination sets and there is no ambiguous combination in the data stream combination set, MAC signaling may activate one of them. The absence of combination ambiguity means that both combinations "1 data stream + 2 data streams" and "2 data streams + 1 data stream" are not included in the combination set at the same time. Another example would be the combinations "1 data stream + 3 data streams", "3 data streams + 1 data stream" and "2 data streams + 2 data streams", of which any two or more cannot be included in the set of combinations at the same time. . According to RRC signaling, the combination sets are represented as follows, specifically, combination set 1: {"1 data stream+1 data stream", "1 data stream+2 data streams" and "2 data streams+2 data streams"} ; combination set 2: {"1 data stream+1 data stream", "2 data streams+1 data stream" and "2 data streams+2 data streams"}; combination set 3: {"1 data stream+1 data stream", "1 data stream+2 data streams" and "1 data stream+3 data streams"}; combination set 4: {"1 data stream+1 data stream", "2 data streams+1 data stream" and "1 data stream+3 data streams"}; combination set 5: {"1 data stream+1 data stream", "1 data stream+2 data streams" and "3 data streams+1 data stream"}; combination set 6: {"1 data stream+1 data stream", "2 data streams+1 data stream" and "3 data streams+1 data stream}. The MAC signaling may then activate one of the data stream combination sets indicated by the RRC signaling.

[00114] In some embodiments, the indication signaling is carried in RRC signaling, MAC signaling, and DCI signaling.

[00115] According to the above-described embodiment of indication signaling transmission with RRC signaling and MAC signaling, if the set of data stream combinations activated by MAC signaling contains a plurality of data stream combinations, the activated data stream combination cannot be uniquely determined. One of the data stream combinations in the set of data stream combinations activated by MAC signaling may be indicated by DCI signaling. For example, if among the combinations of data streams activated by MAC signaling, there are combinations of "1 data stream + 2 data streams" and "2 data streams + 1 data stream", or there are two or three combinations of "1 data stream + 3 data streams", " 3 data streams+1 data stream" and "2 data streams+2 data streams", then DCI signaling is required to indicate one of the many combinations of data streams activated by MAC signaling. For example, if the set of data stream combinations activated by the MAC signal is {"1 data stream+2 data streams" and "2 data streams+1 data stream"}, then the DCI signaling shall indicate the combination "1 data stream+2 data streams". ” or “2 data streams + 1 data stream”. In another example, if the set of data stream combinations activated by the MAC signal is {"1 data stream+3 data streams", "3 data streams+1 data stream" and "2 data streams+2 data streams"}, then the signaling The DCI shall indicate one of the combinations "1 data stream+3 data streams", "3 data streams+1 data stream", or "2 data streams+2 data streams". [00116] The DCI signaling used according to the present invention to indicate one combination of data streams in the set of combinations of data streams activated by MAC signaling may be referred to as the third DCI. In some embodiments, the indication signaling is transmitted in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling. The terminal receiving the third DCI information can uniquely determine the combination of data streams.

[00117] FIG. 3 is a flowchart of a method for transmitting data in accordance with one embodiment. As shown in figure 2, the method is applicable to the terminal. The method involves the following sequence of actions.

[00118] In step S21, the indication signaling is received.

[00119] In the present invention, the indication signaling is configured to indicate a combination of data streams. The data stream combination comprises a plurality of data streams. The plurality of data streams are grouped into at least two data stream groups. One or more data streams in each of at least two groups of data streams correspond to the direction of the beam.

[00120] In the present invention, indication signaling may be received in the first or second DCI. The indication signaling may also be received in the first RRC signaling, the second RRC signaling and the MAC signaling, or the second RRC signaling, the MAC signaling and the third DCI.

[00121] In step S22, based on the data stream combination, a beam is determined for transmitting each data stream in the data stream combination indicated by the indication signaling, and using this beam, the data stream in the data stream combination is transmitted.

[00122] In some embodiments, the indication signaling is received in the first DCI. The first DCI contains the first bit and the first bit contains one bit. Different values of the first bit are configured to indicate different combinations of data streams.

[00123] In some embodiments, the implementation of the first bit contains a bit with a reserved value in the first DCI.

[00124] In some embodiments, the indication signaling is received in the second DCI. The second DCI contains the second bit and the second bit contains two bits. Different values of one bit in the second bit or different values of all bits in the second bit are configured to indicate different combinations of streams.

[00125] In some embodiments, one or more bits of the second bit are one or more bits with reserved values in the second DCI.

[00126] In some embodiments, the indication signaling is received in the first RRC signaling. The first RRC signaling is configured to indicate at least one combination of data streams.

[00127] In some embodiments, the indication signaling is received in the second RRC signaling and MAC signaling. The second RRC signaling is configured to indicate N sets of data stream combinations. The MAC signaling is configured to activate at least one set of data stream combinations out of the N sets of data stream combinations. N is a positive integer greater than or equal to 1.

[00128] In some embodiments, each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting on at least one bit.

[00129] In some embodiments, the MAC signaling comprises M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1.

[00130] In some embodiments, the indication signaling is received in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling. For example, if among the combinations of data streams activated by MAC signaling, there are combinations of "1 data stream + 2 data streams" and "2 data streams + 1 data stream", or there are two or three combinations of "1 data stream + 3 data streams" at the same time , "3 data streams + 1 data stream" and "2 data streams + 2 data streams", then using the third DCI, one of the many active data stream combinations activated by MAC signaling must be indicated.

[00131] Upon receiving the indication signaling according to the present invention, the terminal can determine the TCI state or spatial relationship information from the combination of data streams indicated by the indication signaling, and then determine the receive or transmit beam for each data stream in the combination of data streams, and use the receive beam to receive of each data stream in the data stream combination, or use a transmit beam to transmit each data stream in the data stream combination.

[00132] It is understood that the indication signaling received by the terminal according to the present invention is the same as the indication signaling transmitted by the network device. Therefore, for explanations regarding the details disclosed here in insufficient detail, you should refer to the above relevant descriptions of embodiments of the invention, which are not repeated here.

[00133] FIG. 4 is a block diagram illustrating yet another data transmission method in accordance with one embodiment of the present invention. In the method shown in FIG. 4, the network device and the terminal communicate with each other for the purpose of data transmission. As shown in FIG. 4, the data transmission method includes the following steps.

[00134] In step S31, the network device determines and transmits an indication signaling indicating a combination of data streams.

[00135] The network device may send indication signaling in the first DCI, the second DCI, the first RRC signaling, the second RRC signaling, and the MAC signaling, or the second RRC signaling, the MAC signaling, and the third DCI.

[00136] The terminal receives indication signaling from the network device. The terminal receives the indication signaling according to the manner in which the network device transmits the indication signaling. For example, the terminal may receive indication signaling in the first DCI, the second DCI, the first RRC signaling, the second RRC signaling, and the MAC signaling, or the second RRC signaling, the MAC signaling, and the third DCI.

[00137] In step S32, the terminal determines a beam for each data stream in the data stream combination based on the data stream combination indicated by the indication signaling, and uses the determined beam to transmit each data stream in the data stream combination.

[00138] In the data communication method of the present invention, a network device transmits indication signaling for indicating a combination of data streams such that the terminal determines the combination of data streams based on the indication signaling, determines a beam for each data stream in the combination of data streams, and uses the determined beam for transmitting each data stream in the combination of data streams. The data stream can be transmitted or received with high fidelity, thereby improving the accuracy of transmitting or receiving the data stream and improving throughput.

[00139] In accordance with the same concept, embodiments of the invention also provide a device for data transmission.

[00140] It should be understood that in order to implement the above functions, the data communication apparatus provided in the embodiments of the present invention is composed of hardware structures and/or software modules corresponding to various functions. In conjunction with the blocks and flowcharts of the examples described in the embodiments of the present invention, the embodiments may be implemented in hardware or as a combination of hardware and computer software. Whether a particular function will be performed by hardware or software-driven hardware depends on the specific application and design requirements. To implement the described functions in each particular case, specialists in this field can use various methods, while such an implementation should not be considered as beyond the technical solutions corresponding to the embodiments of the present invention.

[00141] FIG. 5 is a block diagram of a data communication device 500 in accordance with one embodiment of the present invention. The device 500 can be used as a network device. Device 500 may be a base station or the like. The device 500 is composed of a determining block 501 and a transmitting block 502. The determining block 501 is configured to determine the indication signaling to indicate a combination of data streams. The data stream combination comprises a plurality of data streams. The plurality of data streams are grouped into at least two data stream groups. One or more data streams in each of at least two groups of data streams correspond to the direction of the beam. The transmitter unit 502 is configured to transmit indication signaling.

[00142] In some embodiments, the transmitter unit 502

configured to transmit indication signaling in the first DCI. The first DCI contains the first bit and the first bit contains one bit. Different values of the first bit are configured to indicate different combinations of data streams.

[00143] In some embodiments, the implementation of the first bit contains a bit with a reserved value in the first DCI.

[00144] In some embodiments, the transmitter unit 502 is configured to transmit indication signaling to the second DCI.

[00145] The second DCI contains the second bit, and the second bit contains two bits. Different values of one bit in the second bit or different values of all bits in the second bit are configured to indicate different combinations of streams.

[00146] In some embodiments, one or more bits of the second bit are one or more bits with reserved values in the second DCI.

[00147] In some embodiments, the transmitter unit 502 is configured to transmit indication signaling in the first RRC signaling. The first RRC signaling is configured to indicate at least one combination of data streams.

[00148] In some embodiments, the transmitter unit 502 is configured to transmit indication signaling in the second RRC signaling and MAC signaling.

[00149] The second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to one.

[00150] In some embodiments, each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting on at least one bit.

[00151] In some embodiments, the MAC signaling comprises M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1.

[00152] In some embodiments, the transmitter unit 502 is configured to transmit indication signaling in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling.

[00153] Since the description of the embodiments of the method described in detail the features of the operation of each module to implement this method, a detailed description is not provided here.

[00154] FIG. 6 is a block diagram of a data communication device 600 in accordance with one embodiment of the present invention. Device 600 can be used as a terminal. The device 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

[00155] The device 600 consists of a receiving unit 601 and a determining unit 602. The receiving unit 601 is configured to receive indication signaling to indicate a combination of data streams. The data stream combination comprises a plurality of data streams. The plurality of data streams are grouped into at least two data stream groups. One or more data streams in each of at least two groups of data streams correspond to the direction of the beam. The determining unit 602 is configured to determine a beam for transmitting each data stream in the data stream combination indicated by the indication signaling based on the data stream combination and transmit the data stream in the data stream combination using that beam.

[00156] In some embodiments, the receiving unit 601 is configured to receive indication signaling in the first DCI. The first DCI contains the first bit and the first bit contains one bit. Different values of the first bit are configured to indicate different combinations of data streams.

[00157] In some embodiments, the implementation of the first bit contains a bit with a reserved value in the first DCI.

[00158] In some embodiments, the receiving unit 601 is configured to receive indication signaling in the second DCI. The second DCI contains the second bit and the second bit contains two bits. Different values of one bit in the second bit or different values of all bits in the second bit are configured to indicate different combinations of streams.

[00159] In some embodiments, one or more bits of the second bit are one or more bits with reserved values in the second DCI.

[00160] In some embodiments, the receiving unit 601 is configured to receive the indication signaling in the first RRC signaling. The first RRC signaling is configured to indicate at least one combination of data streams.

[00161] In some embodiments, the receiving unit 601 is configured to receive indication signaling in the second RRC signaling and MAC signaling. The second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to 1.

[00162] In some embodiments, each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting on at least one bit.

[00163] In some embodiments, the MAC signaling comprises M bits, where the M bits may indicate at least N bit values, with each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1.

[00164] In some embodiments, the receiving unit 601 is configured to receive indication signaling in the third DCI. The third DCI is configured to indicate the data stream combination in the data stream combination set activated by MAC signaling.

[00165] Since the description of the embodiments of the method described in detail the features of the operation of each module to implement this method, a detailed description is not provided here.

[00166] Embodiments of the present invention also provide a communication system that includes the aforementioned communication device 500 for a network device and a communication device 600 for a terminal. The functions of the device 500 and the device 600 are discussed in detail in the description of the above embodiments.

[00167] FIG. 7 is a block diagram of a data communication device 700 in accordance with some embodiments of the present invention. Device 700 can be used as a network device, for example. The device 700 can be used, in particular, as a network device such as a base station. As shown in FIG. 7, device 700 includes a processor component 722. Processor component 722 is comprised of one or more processors. In addition, device 700 includes a storage resource in the form of memory 732 for storing instructions, such as application programs, that can be executed by processor component 722. Application programs stored in memory 732 may consist of one or more modules, each of which corresponds to set of instructions. In addition, the processor component 722 is configured to execute instructions for implementing the methods described above.

[00168] The device 700 may also include a power component 726 configured to power the device 700, a wired or wireless network interface 750 configured to connect the device 700 to a network, and an input/output (I/O) interface 758. The device 700 can operate running an operating system stored in memory 732 such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[00169] Embodiments also provide a computer-readable storage medium along with instructions, such as a memory 732 that stores instructions. Instructions may be executed by processor 722 in device 700 to implement the methods described above. The computer-readable storage medium can be, for example, read-only memory (ROM), random access memory (RAM), read-only optical disk (CD-ROM), magnetic tape, floppy disk, optical storage device, etc.

[00170] FIG. 8 is a block diagram of a data communication device 800 in accordance with some embodiments of the present invention. Device 800 may be applicable to a terminal. The device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

[00171] As shown in FIG. 8, device 800 may include one or more of the following components: processor component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, measurement component 814, and communication component 816.

[00172] The processor component 802 typically controls the general functions of the device 800, including functions related to display, phone calls, data transfer, camera operation, and recording. Processor component 802 may include one or more processors 820 executing instructions to perform all or part of the steps of the method described above. In addition, processor component 802 may include one or more modules that enable processor component 802 to interact with other components. For example, processor component 802 may include a media module for interfacing between media component 808 and processor component 802.

[00173] The memory 804 is configured to store various types of data necessary for the operation of the device 800. Such data includes instructions for any applications or methods performed by the device 800, contact list data, phone book data, messages, images, videos, and etc. The memory 804 may be implemented with any type of volatile or non-volatile memory, or combinations thereof, such as static random access memory (SRAM), electrically erasable read-only programmable memory (EEPROM), read-only erasable programmable memory (EPROM), read-only programmable memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

[00174] Power component 806 provides power to various components of device 800. Power component 806 may include a power management system, one or more power supplies, and any other components associated with generating, regulating, and distributing power within device 800.

[00175] The multimedia component 808 includes a screen that serves as an interface for displaying information between the device 800 and the user. In some embodiments, the screen may be comprised of a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, then it may be in the form of a touch screen for receiving inputs from the user. The touchpad contains one or more touch sensors to recognize touches, movements, and gestures on the touchpad. The touch sensors can recognize not only the location of a finger being touched or swiped, but also the period of time and pressing force associated with the touch or swipe of the finger. In some embodiments, media component 808 includes a front camera and/or a rear camera. When the device 800 is in an operating mode, such as a photo or video capture mode, the front and/or rear cameras can receive external media. Each front and rear camera can be a fixed focal length system or allow variable focal length and optical zoom.

[00176] The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC) configured to receive an external audio signal when the device 800 is in an operating mode, such as calling, recording, and voice recognition modes. The received audio signal may then be stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

[00177] The input/output interface 812 provides an interface between the processor component 802 and peripheral interface modules such as a keyboard, control wheel, buttons, and the like. The buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[00178] The metering component 814 includes one or more sensors for evaluating the status of various aspects of the device 800. For example, the metering component 814 can determine the open and closed state of the device 800, the relative position of the components of the device 800, such as a display and keyboard, a change in the position of the device 800 or its component, presence or absence of user contact with device 800, orientation or acceleration/deceleration of device 800, and temperature change of device 800. Measuring component 814 may include a presence sensor configured to detect nearby objects without physical contact. The measurement component 814 may also include an illumination sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, measurement component 814 may also include an accelerometer sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[00179] Communication component 816 is configured to provide wired or wireless communication between device 800 and other devices. Device 800 can access wireless networks based on Wi-Fi, 2G, 4G, or combinations thereof. In one embodiment, communication component 816 receives a broadcast signal or associated broadcast information from an external broadcast control system over a broadcast channel. In one embodiment, communication component 816 further comprises a Near Field Communication (NFC) module for enabling communication over short distances. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared transmission technology (IrDA), ultra-wideband (UWB) technology, Bluetooth technology (BT), and other technologies.

[00180] In some embodiments, apparatus 800 may be implemented using one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLUs), field programmable logic integrated circuits (FPGAs), controllers, microcontrollers, microprocessors or other electronic components for implementing the method described above.

[00181] Embodiments also provide a computer-readable storage medium along with instructions, such as a memory 804 that stores instructions. The instructions may be executed by processor 820 in device 800 to implement the methods described above. The computer-readable storage medium can be, for example, ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical storage device, etc.

[00182] It should be understood that the term "multiple" used in the present description refers to one or more objects, and the term "many" - two or more objects. The expression "and/or" describes one of three possible types of association relation of related objects, for example, A and/or B, which can mean the following: only object A exists, objects A and B exist simultaneously, only object B exists. The symbol "/ " usually indicates that the related objects are in an "or" relationship. Unless otherwise clearly indicated by the context, the singular forms also imply the possibility of a plural.

[00183] It should also be understood that the terms "first" and "second" are used to describe various information, but they do not impose restrictions on this information. These terms are only used to distinguish between information of the same type and do not indicate a particular order or degree of importance. In fact, concepts such as "first" and "second" can be used interchangeably. For example, the first information may also be referred to as second information, and the second information may likewise be referred to as first information without violating the scope of the present invention.

[00184] It should be understood that although the operations are described in a specific order in accordance with the drawings attached to the embodiments of the invention, these operations do not have to be performed in the specific order shown in the drawings, or sequentially, and need not be performed to obtain the desired result. Under certain conditions, it is advisable to use multitasking and parallel processing.

[00185] Other embodiments of the present invention will become apparent to those skilled in the art from the description and practice of the present invention. This application covers any modifications, uses or adaptations of the present invention consistent with its basic principles, including such deviations from it, which are consistent with known or accepted practice in the art. The examples described are to be regarded as illustrative only, and the true scope and essence of the invention are defined by the following claims.

[00186] It should be understood that the present invention is not limited to an exact reproduction of the system described above and illustrated in the accompanying drawings, and that various modifications and changes can be made within the scope of the present invention. It is intended that the scope of the present invention be limited only by the appended claims.

Claims (59)

1. A data transfer method performed by a network device, according to which: defining an indication signaling for indicating a data stream combination comprising a plurality of data streams, wherein the plurality of data streams are grouped into at least two data stream groups, and one or more data streams in each of the at least two data stream groups corresponds to a beam direction; and transmit an indication signal. 2. The method according to claim. 1, in which when transmitting signaling indication transmitting indication signaling in a first downlink control information (DCI), wherein the first DCI contains a first bit and the first bit contains one bit; and different values of the first bit are configured to indicate different combinations of data streams. 3. The method according to claim 1, in which, when transmitting the indication signaling transmitting indication signaling in a second downlink control information (DCI); wherein the second DCI contains a second bit and the second bit contains two bits; and provide at least one of the following: to indicate different combinations of data streams, configuring different bit values in the second bit; or to indicate different combinations of data streams, different values of all bits of the second bit are configured. 4. The method according to claim 1, in which, when transmitting an indication signaling: transmitting the indication signaling in the first Radio Resource Control (RRC) signaling, wherein the first RRC signaling is configured to indicate at least one combination of data streams. 5. The method according to claim 1, in which, when transmitting an indication signaling: transmitting the indication signaling using the second radio resource control (RRC) signaling and the medium access control (MAC) signaling, wherein the second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to 1 . 6. The method of claim 5, wherein each data stream combination set of the N data stream combination sets comprises a data stream combination, and the MAC signaling comprises N bits, and each bit corresponds to a data stream combination, and at least one data stream combination is activated by setting at least one bit. 7. The method of claim 5, wherein the MAC signaling comprises M bits that are capable of indicating at least N bit values, each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1. 8. The method of claim 7, wherein, when signaling the indication, also: transmitting the indication signaling in the third downlink control information (DCI), wherein the third DCI is configured to indicate the data stream combination in the data stream combination set activated by the MAC signaling. 9. The method of data transmission performed by the terminal, according to which: receiving indication signaling to indicate a data stream combination comprising a plurality of data streams, wherein the plurality of data streams are grouped into at least two data stream groups, and one or more data streams in each of the at least two data stream groups correspond to a beam direction; and determining a beam for transmitting each data stream in the data stream combination indicated by the indication signaling based on the data stream combination, and using this beam to transmit the data stream in the data stream combination. 10. The method of claim. 9, in which when receiving signaling indication receiving indication signaling in the first downlink control information (DCI), wherein the first DCI contains the first bit, and the first bit contains one bit; and different values of the first bit are configured to indicate different combinations of data streams. 11. The method of claim 9, wherein upon receiving the indication signaling: receiving indication signaling in a second downlink control information (DCI); wherein the second DCI contains a second bit and the second bit contains two bits; and provide at least one of the following: to indicate different combinations of data streams, configuring different bit values in the second bit; or to indicate different combinations of data streams, different values of all bits of the second bit are configured. 12. The method of claim 9, wherein upon receiving the indication signaling: receiving the indication signaling in the first radio resource control (RRC) signaling, wherein the first RRC signaling is configured to indicate at least one combination of data streams. 13. The method of claim. 9, in which when receiving signaling indication receiving indication signaling with second radio resource control (RRC) signaling and medium access control (MAC) signaling, wherein the second RRC signaling is configured to indicate N sets of data flow combinations, and the MAC signaling is configured to activate at least one set of data flow combinations among the N sets of data flow combinations, where N is a positive integer greater than or equal to 1 . 14. The method of claim 13, wherein each set of data stream combinations of the N sets of data stream combinations contains a combination of data streams, and the MAC signaling contains N bits, each bit corresponds to a combination of data streams, and at least one combination of data streams is activated by setting at least one bit. 15. The method of claim 13, wherein the MAC signaling comprises M bits that are capable of indicating at least N bit values, each bit value corresponding to an activation of a set of data stream combinations, where M is a positive integer greater than or equal to 1. 16. The method of claim 15, wherein upon receiving the indication signaling, in addition, receiving indication signaling in the third downlink control information (DCI), wherein the third DCI is configured to indicate the data stream combination in the data stream combination set activated by the MAC signaling. 17. Device for data transmission, containing: defining block configured to define indication signaling for indicating a data stream combination comprising a plurality of data streams, wherein the plurality of data streams are grouped into at least two data stream groups, and one or more data streams in each of at least two groups data streams correspond to the direction of the beam; and a transmitter unit configured to transmit indication signaling. 18. Device for data transmission, containing: a receiving unit configured to receive indication signaling for indicating a combination of data streams comprising a plurality of data streams, wherein the plurality of data streams are grouped into at least two groups of data streams, and one or more data streams in each of at least two groups data streams correspond to the direction of the beam; and a determination unit configured to determine a beam for transmitting each data stream in the data stream combination indicated by the indication signaling based on the data stream combination and transmit the data stream in the data stream combination using the beam. 19. Device for data transmission, containing: processor and a memory configured to store instructions executable by the processor; wherein the processor is configured to implement the data transmission method according to any one of claims. 1-8. 20. Device for data transmission, containing: processor and a memory configured to store instructions executable by the processor; wherein the processor is configured to implement the data transmission method according to any one of claims. 9-16. 21. A computer-readable storage medium with instructions stored on it, during which the processor of the network device performs the data transmission method according to any one of paragraphs. 1-8. 22. A computer-readable storage medium with instructions stored on it, during which the processor of the network device performs the data transmission method according to any one of paragraphs. 9-16.

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