CN111726815A

CN111726815A - Data transmission method and device

Info

Publication number: CN111726815A
Application number: CN201910213182.3A
Authority: CN
Inventors: 管鹏
Original assignee: Chengdu Huawei Technology Co Ltd
Current assignee: Chengdu Huawei Technology Co Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-09-29
Anticipated expiration: 2039-03-20
Also published as: WO2020187125A1; CN111726815B

Abstract

The application provides a data transmission method and a device, wherein the method comprises the following steps: the terminal equipment and the network equipment respectively determine the transmitting wave beam of the uplink channel; the terminal equipment adopts the sending wave beam to send the uplink channel, and correspondingly, the network equipment adopts the receiving wave beam corresponding to the sending wave beam to receive the uplink channel; wherein the transmission beam is a transmission beam used by the terminal device recently or a transmission beam to be used recently; and/or the transmission beam is a beam corresponding to an antenna panel used by the terminal device recently or a beam corresponding to an antenna panel to be used recently. The data transmission method and the data transmission device are beneficial to avoiding the problems that the antenna panel of the terminal equipment is frequently switched and cannot be switched in time, and further improve the data transmission performance.

Description

Data transmission method and device

Technical Field

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

Background

In some communication systems, for example, new radio access technology (NR) of a fifth generation (5th generation, 5G) communication system, in order to combat path loss in a high frequency scenario, a transmitting end and a receiving end may respectively obtain gains through beamforming. The transmitting end and the receiving end can transmit and receive signals through a predetermined beam pairing relationship.

Since the beams have a certain spatial directivity, in order to satisfy wide area coverage, the terminal device may be configured with a plurality of antenna panels (antenna panels) so as to cover a plurality of different directions. The beam may receive or transmit data through the antenna panel. Only one antenna panel is used by the terminal device at a time, and other antenna panels of the terminal device may be in a dormant state (also referred to as an inactive state). It takes a certain time, for example, 2 ms to 3 ms, for one antenna panel to transition from the sleep state to the active state.

A bandwidth part (BWP) may configure a plurality of Physical Uplink Control Channel (PUCCH) resources, where each PUCCH resource may have different transmission beams, and the different transmission beams may be formed by different antenna panels. The network device may schedule the terminal device to transmit a Physical Uplink Shared Channel (PUSCH) through Downlink Control Information (DCI). One method for determining the transmission beam of the PUSCH is to use the transmission beam of the PUCCH resource with the smallest identification ID among the plurality of PUCCH resources as the transmission beam of the PUSCH. When the terminal device needs to switch beams, it may need to switch the antenna panel first and then switch to the corresponding beams on the antenna panel to transmit and receive signals. Therefore, if the switching time of the antenna panel from the sleep state to the active state is further considered, the terminal device may not switch the antenna panel, and the scheduled resource may arrive, that is, the antenna panel of the terminal device is not in time to switch.

Disclosure of Invention

The application provides a data transmission method and device, which are beneficial to avoiding the problems of frequent switching and untimely switching of an antenna panel of terminal equipment, and further improving the data transmission performance.

In a first aspect, a data transmission method is provided, including: the terminal equipment determines a transmission beam of an uplink channel; the terminal equipment adopts the sending wave beam to send the uplink channel; wherein the transmission beam is a transmission beam used by the terminal device recently or a transmission beam to be used recently; and/or the antenna panel corresponding to the transmission beam is an antenna panel used recently by the terminal equipment or an antenna panel to be used recently.

According to the data transmission method, the antenna panel used by the terminal equipment recently or the antenna panel to be used recently is used as the antenna panel corresponding to the sending beam of the uplink channel sent by the terminal equipment, so that the problems of frequent switching and untimely switching of the antenna panel of the terminal equipment are avoided, and the data transmission performance is improved.

Specifically, the transmission beam may be a transmission beam that has been used by the terminal device recently, and then the antenna panel corresponding to the transmission beam is the antenna panel that has been used by the terminal device recently, and the transmission beam is a transmission beam that will be used by the terminal device recently, and then the antenna panel corresponding to the transmission beam is the antenna panel that will be used by the terminal device recently. However, the opposite is not necessarily true, and the antenna panel corresponding to the transmission beam is the antenna panel that has been used recently by the terminal device, but the antenna panel may form a plurality of beams, and the transmission beam of the uplink channel is not necessarily the one that has been used recently by the terminal device. Similarly, the antenna panel corresponding to the transmission beam is the antenna panel to be used by the terminal device recently, but the antenna panel may form a plurality of beams, and the transmission beam of the uplink channel is not necessarily the one to be used by the terminal device recently.

In this embodiment, the antenna panel corresponding to the transmission beam is an antenna panel used by the terminal device most recently or an antenna panel to be used most recently, and may also be understood as: the transmission beam is a beam corresponding to an antenna panel used by the terminal device recently or a beam corresponding to an antenna panel to be used recently.

It should be understood that the beam corresponding to the antenna panel may be one beam, or may be multiple beams (i.e., a set of beams), and the one or more beams may be configured for the terminal device by the network device through the beam indication, or may be autonomously determined by the terminal device, for example, the terminal device may record the beam used by the antenna panel for receiving and/or transmitting, or the terminal device may determine the beam corresponding to the antenna panel by itself and report the beam to the network device. Since one antenna panel may have a plurality of beams that can be used for receiving and/or transmitting, the "beam corresponding to the antenna panel" finally used by the terminal device may be any one of the plurality of beams, or may be one of the plurality of beams that has the highest signal quality, or a method in a subsequent embodiment of the present application may be adopted, that is, a transmission beam corresponding to a PUCCH resource with the smallest identifier ID among the plurality of beams is selected, which is not limited in this embodiment of the present application.

It should be understood that the above uplink channel may also be referred to as a first uplink channel, and the first uplink channel is used for description hereinafter. The first uplink channel may be an uplink data channel, for example, a PUSCH, or an uplink control channel, for example, a PUCCH. The above-mentioned transmission beam may also be referred to as a "default transmission beam", "default transmission beam", and the like, and the name of the transmission beam is not limited in the present application.

It should also be understood that the transmission time unit described in the embodiments of the present application refers to a time unit in which data or a signal has been transmitted (including transmission and/or reception), or a time unit in which data or a signal is to be transmitted. The above-mentioned "most recently used" beam or antenna panel indicates a beam or antenna panel corresponding to the last transmission time unit (for example, the last time slot for transmitting data or signals) before the terminal device transmits the first uplink channel, in other words, the time unit corresponding to the "most recently used" beam or antenna panel is a time unit which is before the time unit for transmitting the first uplink channel, has transmitted data or signals, and has the smallest time interval with the time unit for transmitting the first uplink channel; the above-mentioned "beam or antenna panel to be used last" indicates a beam or antenna panel corresponding to a first transmission time unit (for example, a first slot for transmitting data or a signal) after the terminal device transmits the first uplink channel, in other words, the time unit corresponding to the "beam or antenna panel to be used last" is a time unit which is after the time unit for transmitting the first uplink channel, is to transmit data or a signal, and has a minimum time interval with the time unit for transmitting the first uplink channel. Typically, the "most recently used" beam or antenna panel is configured for the terminal device by the network device through signaling.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal equipment determines a first time interval between a transmission time unit corresponding to the recently used transmission beam or antenna panel and a time unit for transmitting the first uplink channel and a second time interval between the transmission time unit corresponding to the recently used transmission beam or antenna panel and the time unit for transmitting the first uplink channel; and the terminal device takes the transmitting beam or the antenna panel corresponding to the smaller time interval of the first time interval and the second time interval as the transmitting beam or the antenna panel corresponding to the transmitting beam.

In this way, the terminal device can reasonably select from the recently used transmission beam or antenna panel and the recently used transmission beam or antenna panel according to specific conditions, so that the terminal device adopts the antenna panel in an activated state as much as possible, thereby avoiding the problems of frequent switching and untimely switching of the antenna panel of the terminal device.

With reference to the first aspect, in some implementations of the first aspect, a time interval between a time slot corresponding to the "most recently used" and a current time when the PUSCH is transmitted cannot be too large, otherwise the antenna panel may have been turned off and is in an inactive state, and if the PUSCH is to be retransmitted, the turned off antenna panel needs to be activated, which takes a certain time. Similarly, the time interval between the time slot corresponding to the "most recently used" and the current time of sending the PUSCH cannot be too large, otherwise the antenna panel may not be activated yet, and if the PUSCH is to be transmitted, the antenna panel in the inactive state needs to be activated in advance, which needs to consume a certain time. The maximum value of the time interval may be agreed by a protocol or configured by the network device through signaling.

With reference to the first aspect, in some implementations of the first aspect, the transmission beam is a transmission beam corresponding to a physical uplink control channel, PUCCH, resource that the terminal device has recently used or a PUCCH resource that will be recently used.

In other words, the transmission beam may be a transmission beam corresponding to a PUCCH resource that has been used recently by the terminal device, or the transmission beam may be a transmission beam corresponding to a PUCCH resource that will be used recently by the terminal device. It should be understood that the PUCCH resource is configured for the terminal device by the network device through signaling.

With reference to the first aspect, in some implementations of the first aspect, if the PUCCH resource used by the terminal device most recently or the PUCCH resource to be used most recently includes multiple PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the multiple PUCCH resources.

Specifically, the transmission beam is a transmission beam corresponding to a PUCCH resource having a smallest or largest ID among the plurality of PUCCH resources. For example, the PUCCH resource that has been used recently by the terminal device or the PUCCH resource to be used recently includes PUCCH resource 1, PUCCH resource 2, and PUCCH resource 3, and then the terminal device may determine that the transmission beam of the first uplink channel is the transmission beam corresponding to PUCCH resource 1, or the terminal device may determine that the transmission beam of the first uplink channel is the transmission beam corresponding to PUCCH resource 3.

With reference to the first aspect, in some implementations of the first aspect, if the antenna panel corresponding to the transmission beam is a recently used antenna panel or a recently to-be-used antenna panel of the terminal device, and there are multiple PUCCH resources configured with the recently used antenna panel or the recently to-be-used antenna panel, the transmission beam is a transmission beam corresponding to a PUCCH resource with a minimum identification ID among the multiple PUCCH resources.

It should be understood that the above ID minimization is only a rule that the network device and the terminal device determine the transmission beam in a default manner, and the terminal device may also refer to the PUCCH resource with the ID maximization or the specified ID, which is not limited in this embodiment of the present application.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal equipment judges whether an uplink antenna panel used by the terminal equipment recently is in an activated state; if the uplink antenna panel used by the terminal equipment recently is in an activated state, the terminal equipment determines that the antenna panel corresponding to the sending beam is the uplink antenna panel used by the terminal equipment recently; or, if the uplink antenna panel used by the terminal device recently is in an inactive state, the terminal device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel used by the terminal device recently.

In other words, if the uplink antenna panel used by the terminal device recently is in an activated state, the transmission beam is a beam corresponding to the uplink antenna panel used by the terminal device recently; or, if the uplink antenna panel used by the terminal device recently is in an inactive state, the transmission beam is a beam corresponding to the downlink antenna panel used by the terminal device recently.

It should be understood that the uplink antenna panel described herein denotes an antenna panel used for uplink transmission, and the downlink antenna panel denotes an antenna panel used for downlink transmission.

Specifically, in consideration of the existence of a certain keep-alive duration (i.e., the length of time that the antenna panel remains in the activated state) of the antenna panel, the terminal device may determine whether or not the most recently used uplink antenna panel is in the activated state, in a case where it is determined that the most recently used antenna panel is referred to. If the last used uplink antenna panel is in an activated state, the terminal device may use the last used uplink antenna panel. If the last used uplink antenna panel is in an inactive state, the terminal device may use the last used downlink antenna panel. Further, the terminal device may select one of the downlink antenna panels in the active state, which has been used recently.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal equipment determines a third time interval between the time unit of the last uplink transmission of the terminal equipment and the time unit of the first uplink channel transmission of the terminal equipment; the terminal equipment determines a fourth time interval between a time unit of the last downlink receiving of the terminal equipment and a time unit of the first uplink channel sent by the terminal equipment; and the terminal equipment determines the antenna panel corresponding to the smaller time interval of the third time interval and the fourth time interval as the antenna panel corresponding to the transmitting beam.

Therefore, the terminal equipment can reasonably select from the uplink antenna panel used recently and the downlink antenna panel used recently according to specific conditions, so that the terminal equipment adopts the antenna panel in an activated state as much as possible, and the problems of frequent switching and untimely switching of the antenna panel of the terminal equipment are avoided.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal equipment judges whether an uplink antenna panel which is recently used by the terminal equipment is in an activated state; if the uplink antenna panel to be used by the terminal equipment recently is in an activated state, the terminal equipment determines that the antenna panel corresponding to the sending beam is the uplink antenna panel to be used by the terminal equipment recently; or, if the uplink antenna panel to be used by the terminal device recently is in an inactive state, the terminal device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel to be used by the terminal device recently.

In other words, if the uplink antenna panel to be used by the terminal device recently is in an activated state, the transmission beam is a beam corresponding to the uplink antenna panel to be used by the terminal device recently; or, if the uplink antenna panel to be used by the terminal device recently is in an inactive state, the transmission beam is a beam corresponding to the downlink antenna panel to be used by the terminal device recently.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal equipment determines a fifth time interval between a time unit which is recently transmitted by the terminal equipment in an uplink mode and a time unit which is transmitted by the terminal equipment in the first uplink channel; the terminal equipment determines a sixth time interval between a time unit which is recently received by the terminal equipment in a downlink mode and a time unit which is sent by the terminal equipment to the first uplink channel; and the terminal equipment determines the antenna panel corresponding to the smaller time interval of the fifth time interval and the sixth time interval as the antenna panel corresponding to the transmitting beam.

Therefore, the terminal equipment can reasonably select from the uplink antenna panel to be used recently and the downlink antenna panel to be used recently according to specific conditions, so that the terminal equipment adopts the antenna panel in an activated state as much as possible, and the problems of frequent switching and untimely switching of the antenna panel of the terminal equipment are avoided.

It should be understood that the terminal device may further select a minimum time interval from the third time interval, the fourth time interval, the fifth time interval, and the sixth time interval, and determine an antenna panel corresponding to the minimum time interval as the antenna panel corresponding to the transmission beam.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: and the terminal equipment sends capability information to network equipment, wherein the capability information is used for indicating the duration of the activated state of an uplink antenna panel of the terminal equipment.

Specifically, the terminal device may send capability information indicating the keep-alive duration of the uplink antenna panel of the terminal device to the network device, and the network device may determine, according to the capability information, whether the uplink antenna panel of the terminal device is in an activated state, so that the state of the antenna panel is synchronously sent between the network device and the terminal device.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal equipment receives first configuration information from network equipment, wherein the first configuration information is used for indicating the duration of requiring an uplink antenna panel of the terminal equipment to keep an activated state; the method for judging whether the uplink antenna panel used by the terminal equipment recently is in an activated state by the terminal equipment comprises the following steps: and the terminal equipment judges whether the uplink antenna panel used by the terminal equipment recently is in an activated state or not according to the first configuration information.

Specifically, the network device may send, to the terminal device, first configuration information indicating that the keep-alive duration of the uplink antenna panel of the terminal device is required. In other words, the first configuration information requires that the terminal device must maintain the time duration indicated by the first configuration information after the uplink antenna panel is activated. The terminal device can determine whether the uplink antenna panel of the terminal device is in an activated state according to the first configuration information, so that the state of the antenna panel is synchronously transmitted between the network device and the terminal device.

With reference to the first aspect, in some implementations of the first aspect, before the terminal device determines the transmission beam of the first uplink channel, the method further includes: the terminal device receives control information from a network device, wherein the control information is used for scheduling the first uplink channel and does not include information for indicating a transmission beam of the first uplink channel and information for indicating an antenna panel corresponding to the transmission beam of the first uplink channel.

Specifically, the first uplink channel is scheduled by the network device through the control information, for example, the network device schedules the transmission of the PUSCH through DCI. Therefore, in the embodiment of the present application, the control information does not include information indicating the transmission beam of the first uplink channel and information indicating the antenna panel corresponding to the transmission beam of the first uplink channel. That is, in the embodiment of the present application, the sending beam of the first uplink channel is not explicitly indicated, but an implicit determination method is adopted, so that the network device and the terminal device transmit the first uplink channel by using a default transceiving beam pair, thereby avoiding frequent switching of an antenna panel of the terminal device.

With reference to the first aspect, in some implementations of the first aspect, before the terminal device determines the transmission beam of the first uplink channel, the method further includes: the terminal device receives control information from a network device, where the control information is used to schedule the first uplink channel, the control information includes information used to indicate an antenna panel corresponding to a transmission beam of the first uplink channel, and the control information does not include information used to indicate the transmission beam of the first uplink channel.

Specifically, the control information indicates an antenna panel for the terminal device to transmit the first uplink channel, and the terminal device may transmit the first uplink channel using the antenna panel indicated by the control information. If there are a plurality of PUCCH resources on which the antenna panel indicated by the control information is disposed, the transmission beam of the first uplink channel may refer to the PUCCH resource with the smallest ID among the plurality of PUCCH resources, that is, the transmission beam of the first uplink channel may be the transmission beam corresponding to the PUCCH resource with the smallest ID among the plurality of PUCCH resources.

With reference to the first aspect, in some implementations of the first aspect, before the terminal device determines the transmission beam of the first uplink channel, the method further includes: the terminal device receives second configuration information from a network device, where the second configuration information is used to configure a resource of a second uplink channel, and the resource includes at least one of a time domain resource, a frequency domain resource, a transmission beam of the second uplink channel, and an antenna panel corresponding to the transmission beam of the second uplink channel; the determining, by the terminal device, a transmission beam of a first uplink channel includes: and the terminal equipment determines the sending beam of the first uplink channel according to the second configuration information.

Specifically, the network device may send the second configuration information to the terminal device to configure a resource of a second uplink channel, where the second uplink channel may be an uplink control channel, for example, a PUCCH. The resource of the second uplink channel may include at least one of a time domain resource, a frequency domain resource, a transmission beam of the second uplink channel, and an antenna panel (also referred to as a transmission antenna panel) corresponding to the transmission beam.

For example, the network device may configure one PUCCH resource or multiple PUCCH resources for the terminal device by using one second configuration information, or may configure multiple PUCCH resources for the terminal device by using multiple second configuration information, specifically configure one PUCCH resource for the terminal device by using each of the multiple second configuration information, which is not limited in this embodiment of the present application.

In a second aspect, a data transmission method is provided, including: the network equipment determines a transmission beam of a first uplink channel; the network equipment receives the first uplink channel by adopting a receiving beam corresponding to the transmitting beam; the sending beam is a sending beam used by the terminal equipment recently or a sending beam to be used recently; and/or the antenna panel corresponding to the transmission beam is an antenna panel used recently by the terminal equipment or an antenna panel to be used recently.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network device determines a first time interval between a transmission time unit corresponding to the recently used transmission beam or antenna panel and a time unit for transmitting the first uplink channel, and a second time interval between a transmission time unit corresponding to the recently to-be-used transmission beam or antenna panel and a time unit for transmitting the first uplink channel; and the network equipment takes the transmitting beam or the antenna panel corresponding to the smaller time interval of the first time interval and the second time interval as the transmitting beam or the antenna panel corresponding to the transmitting beam.

With reference to the second aspect, in some implementations of the second aspect, the transmission beam is a transmission beam corresponding to a physical uplink control channel, PUCCH, resource that the terminal device has recently used or a PUCCH resource that will be recently used.

With reference to the second aspect, in some implementations of the second aspect, if the PUCCH resource used by the terminal device most recently or the PUCCH resource to be used most recently includes multiple PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the multiple PUCCH resources.

With reference to the second aspect, in some implementations of the second aspect, if the antenna panel corresponding to the transmission beam is a recently used antenna panel or a recently to-be-used antenna panel of the terminal device, and there are multiple PUCCH resources configured with the recently used antenna panel or the recently to-be-used antenna panel, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the multiple PUCCH resources.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network equipment judges whether an uplink antenna panel used by the terminal equipment recently is in an activated state; if the uplink antenna panel used by the terminal device recently is in an activated state, the network device determines that the antenna panel corresponding to the transmission beam is the uplink antenna panel used by the terminal device recently; or, if the uplink antenna panel used by the terminal device recently is in an inactive state, the network device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel used by the terminal device recently.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network equipment determines a third time interval between the time unit of the last uplink transmission of the terminal equipment and the time unit of the first uplink channel transmission of the terminal equipment; the network equipment determines a fourth time interval between the time unit of the last downlink receiving of the terminal equipment and the time unit of the first uplink channel sent by the terminal equipment; and the network equipment determines the antenna panel corresponding to the smaller time interval of the third time interval and the fourth time interval as the antenna panel corresponding to the transmission beam.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network equipment judges whether an uplink antenna panel which is recently used by the terminal equipment is in an activated state; if the uplink antenna panel to be used by the terminal equipment recently is in an activated state, the network equipment determines that the antenna panel corresponding to the transmission beam is the uplink antenna panel to be used by the terminal equipment recently; or, if the uplink antenna panel to be used by the terminal device recently is in an inactive state, the network device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel to be used by the terminal device recently.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network equipment determines a fifth time interval between a time unit which is recently transmitted by the terminal equipment in an uplink mode and a time unit which is transmitted by the terminal equipment in the first uplink channel; the network equipment determines a sixth time interval between a time unit which is recently received by the terminal equipment in a downlink mode and a time unit which is sent by the terminal equipment to the first uplink channel; and the network equipment determines the antenna panel corresponding to the smaller time interval of the fifth time interval and the sixth time interval as the antenna panel corresponding to the transmission beam.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network equipment receives capability information from the terminal equipment, wherein the capability information is used for indicating the duration of the activated state of an uplink antenna panel of the terminal equipment; the network device determining whether the recently used uplink antenna panel is in an active state includes: and the network equipment judges whether the uplink antenna panel used recently is in an activated state or not according to the capability information.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network equipment sends first configuration information to the terminal equipment, wherein the first configuration information is used for indicating the duration of the requirement that an uplink antenna panel of the terminal equipment is kept in an activated state.

With reference to the second aspect, in some implementations of the second aspect, before the terminal device determines the transmission beam of the first uplink channel, the method further includes: and the network equipment sends control information to terminal equipment, wherein the control information is used for scheduling the first uplink channel and does not comprise information used for indicating a sending beam of the first uplink channel.

With reference to the second aspect, in some implementations of the second aspect, before the network device determines the transmission beam of the first uplink channel, the method further includes: the network device sends second configuration information to the terminal device, where the second configuration information is used to configure resources of a second uplink channel, and the resources include at least one of time domain resources, frequency domain resources, a transmission beam of the second uplink channel, and an antenna panel corresponding to the transmission beam of the second uplink channel.

In a third aspect, a data transmission method is provided, including: the terminal equipment determines a transmission beam of a first uplink channel; the terminal equipment transmits the first uplink channel by adopting the transmission beam; and the sending beam is a sending beam corresponding to a Physical Uplink Control Channel (PUCCH) resource used by the terminal equipment recently.

With reference to the third aspect, in certain implementation manners of the third aspect, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among the PUCCH resources.

Reference may be made to the first aspect for a description of "most recently used" and will not be described in detail here.

In a fourth aspect, a data transmission method is provided, including: the network equipment determines a transmission beam of a first uplink channel; the network equipment receives the first uplink channel by adopting a receiving beam corresponding to the transmitting beam; and the sending beam is a sending beam corresponding to a Physical Uplink Control Channel (PUCCH) resource used by the terminal equipment recently.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identifier ID in the PUCCH resources.

In a fifth aspect, another data transmission method is provided, including: the terminal equipment determines a transmission beam of a first uplink channel; the terminal equipment transmits the first uplink channel by adopting the transmission beam; and the antenna panel corresponding to the transmission beam is the antenna panel used by the terminal device most recently.

With reference to the fifth aspect, in some implementations of the fifth aspect, the antenna panel corresponding to the transmission beam is an antenna panel that has been used recently, among antenna panels using PUCCH resources. Optionally, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among a plurality of PUCCH resources in which an antenna panel using PUCCH resources is arranged that has been used most recently.

With reference to the fifth aspect, in some implementations of the fifth aspect, the antenna panel corresponding to the transmission beam is an antenna panel that has been used most recently among antenna panels using the first resource. Optionally, the transmission beam is a transmission beam corresponding to a first resource with a smallest ID among a plurality of first resources configured with an antenna panel that has been used most recently among antenna panels using the first resource. Optionally, the first resource may be a PUSCH resource, an SRS resource, a CSI-RS resource, a PDSCH resource, or a PDCCH resource.

Illustratively, the antenna panel corresponding to the transmission beam is the antenna panel 1 that is most recently used among the antenna panels for transmitting the PUSCH. Further, the transmission beam is a transmission beam of a PUSCH resource having a smallest port number of a PUSCH demodulation reference signal (DMRS) among a plurality of PUSCH resources in which the antenna panel 1 is arranged.

Illustratively, the antenna panel corresponding to the transmission beam is the antenna panel 2 that is most recently used among the antenna panels transmitting the SRS. Further, the transmission beam is a transmission beam that identifies the smallest SRS resource among the plurality of SRS resources in which the antenna panel 2 is arranged.

Illustratively, the antenna panel corresponding to the transmission beam is the antenna panel 3 which is used most recently among the antenna panels for receiving CSI-RS. Further, the transmission beam is a transmission beam corresponding to a reception beam that identifies the smallest CSI-RS resource among the plurality of CSI-RS resources configured with the antenna panel 3.

Illustratively, the antenna panel corresponding to the transmission beam is the antenna panel 4 that is most recently used among the antenna panels receiving the PDCCH. Further, the transmission beam is a transmission beam corresponding to a reception beam that identifies the smallest PDCCH resource among a plurality of PDCCH resources in which the antenna panel 4 is arranged, for example, a transmission beam corresponding to a reception beam that identifies the smallest CORESET by a control resource set (CORESET).

Illustratively, the antenna panel corresponding to the transmission beam is the antenna panel 5 which is used most recently among the antenna panels for receiving the PDSCH. Further, the transmission beam is a transmission beam corresponding to a reception beam identifying a PDSCH resource with the smallest size among the PDSCH resources on which the antenna panel 5 is arranged, for example, a transmission beam corresponding to a reception beam of a PDSCH resource with the smallest PDSCH DMRS port number.

In a sixth aspect, another data transmission method is provided, including: the network equipment determines a transmission beam of a first uplink channel; the network equipment receives the first uplink channel by adopting a receiving beam corresponding to the transmitting beam; and the antenna panel corresponding to the transmission beam is the antenna panel used by the terminal equipment recently.

With reference to the sixth aspect, in some implementations of the sixth aspect, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among PUCCH resources in which the recently used antenna panel is configured.

With reference to the sixth aspect, in some implementations of the sixth aspect, the transmission beam is a transmission beam corresponding to a minimum identified resource in a PUSCH, SRS, CSI-RS, PDSCH, or PDCCH in which the most recently used antenna panel is configured.

In a seventh aspect, a data transmission apparatus is provided for performing the method in any one of the possible implementations of the above aspects. In particular, the apparatus comprises means for performing the method in any one of the possible implementations of the aspects described above.

In an eighth aspect, a data transmission apparatus is provided, which includes a processor coupled to a memory and configured to execute instructions in the memory to implement the method in any one of the possible implementations of the above aspects. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

In one implementation, the data transmission apparatus is a terminal device. When the data transmission device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the data transmission device is a chip configured in the terminal device. When the data transmission device is a chip configured in a terminal device, the communication interface may be an input/output interface.

In one implementation, the data transmission apparatus is a network device. When the data transmission device is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the data transmission apparatus is a chip configured in the network device. When the data transmission device is a chip configured in a network device, the communication interface may be an input/output interface.

Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.

In a ninth aspect, there is provided a processor comprising: input circuit, output circuit and processing circuit. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, so that the processor performs the method of any one of the above-mentioned aspects.

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

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

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

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

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

It will be appreciated that the associated data interaction process, for example, sending the indication information, may be a process of outputting the indication information from the processor, and receiving the capability information may be a process of receiving the input capability information from the processor. In particular, the data output by the processor may be output to a transmitter and the input data received by the processor may be from a receiver. The transmitter and receiver may be collectively referred to as a transceiver, among others.

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

In an eleventh aspect, there is provided a computer program product comprising: computer program (also called code, or instructions), which when executed, causes a computer to perform the method of any of the above aspects in possible implementations.

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

In a thirteenth aspect, a communication system is provided, which includes the aforementioned network device and terminal device.

Drawings

Fig. 1 shows a schematic diagram of a communication system of an embodiment of the present application.

Fig. 2 shows a schematic flow chart of a data transmission method according to an embodiment of the present application.

Fig. 3 shows a schematic diagram of an antenna panel of an embodiment of the present application.

Fig. 4 shows a schematic block diagram of a data transmission apparatus according to an embodiment of the present application.

Fig. 5 shows a schematic block diagram of another data transmission apparatus according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a future fifth generation (5G) or New Radio (NR) system, and the like.

It should also be understood that the technical solution of the embodiment of the present application may also be applied to various communication systems based on non-orthogonal multiple access technologies, such as Sparse Code Multiple Access (SCMA) systems, and certainly SCMA may also be referred to as other names in the communication field; further, the technical solution of the embodiment of the present application may be applied to a multi-carrier transmission system using a non-orthogonal multiple access technology, for example, an Orthogonal Frequency Division Multiplexing (OFDM) system using a non-orthogonal multiple access technology, a filter bank multi-carrier (FBMC), a General Frequency Division Multiplexing (GFDM) system, a filtered orthogonal frequency division multiplexing (F-OFDM) system, and the like.

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

The terminal device in this embodiment may communicate with one or more core networks through a Radio Access Network (RAN), and may be referred to as an access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc.

The network device in this embodiment may be a device for communicating with a terminal device, and the network device may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, may also be a base station (NodeB) in a Wideband Code Division Multiple Access (WCDMA) system, may also be an evolved NodeB (eNB) or eNodeB) in an LTE system, may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, and the like, and the present embodiment is not limited thereto. For example, a gNB in an NR system, or a transmission point (TRP or TP), one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system, or may also be a network node constituting the gNB or the transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU).

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

In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided by the embodiment of the present application, as long as the communication can be performed according to the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution main body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module capable of calling the program and executing the program in the terminal device or the network device.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

The embodiment of the application can be applied to an LTE system, a subsequent evolution system such as 5G and the like, or other wireless communication systems adopting various wireless access technologies such as systems adopting access technologies of code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division multiple access and the like, and is particularly applicable to scenes needing channel information feedback and/or applying a secondary precoding technology, such as a wireless network applying a Massive MIMO technology, a wireless network applying a distributed antenna technology and the like.

It should be understood that a multiple-input-multiple-output (MIMO) technique refers to using a plurality of transmitting antennas and receiving antennas at a transmitting end device and a receiving end device, respectively, so that signals are transmitted and received through the plurality of antennas of the transmitting end device and the receiving end device, thereby improving communication quality. The multi-antenna multi-transmission multi-receiving system can fully utilize space resources, realize multi-transmission and multi-reception through a plurality of antennas, and improve the system channel capacity by times under the condition of not increasing frequency spectrum resources and antenna transmitting power.

For the sake of understanding, the following description will be given of terms related to the embodiments of the present application.

1. Beam (beam)

A beam may be understood as a spatial filter or spatial parameters. The beam used for transmitting the signal may be referred to as a transmission beam (Tx beam), and may be a spatial domain transmit filter (spatial domain transmit filter) or spatial transmit parameters (spatial Tx parameters); the beam used for receiving the signal may be referred to as a reception beam (Rx beam), and may be a spatial domain reception filter (spatial domain reception filter) or spatial reception parameters (spatial Rx parameters).

The technique of forming the beam may be a beamforming technique or other technique. For example, the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology. The transmit beam may refer to a distribution of signal strengths formed in different spatial directions after the signal is transmitted through the antenna, and the receive beam may refer to a distribution of signal strengths of the wireless signal received from the antenna in different spatial directions.

In the NR protocol, the beam may be, for example, a spatial filter (spatial filter). It should be understood that this application does not exclude the possibility of defining other terms in future protocols to mean the same or similar meanings.

2. Antenna panel (antenna panel)

The antenna panel is called panel (panel) for short. Each antenna panel may be configured with one or more receive beams and one or more transmit beams. Thus, an antenna panel may also be understood as a beam group. A communication device, such as a terminal device or a network device, may receive signals via a receive beam on the antenna panel or may transmit signals via a transmit beam on the antenna panel.

Specifically, the network device and the terminal device communicate through an antenna, that is, the terminal device and the network device receive and transmit signals through the antenna. The terminal equipment and the network equipment are provided with antenna units (antenna elements). A plurality of antenna elements may be integrated in a panel, and the panel with integrated antenna elements is called an antenna panel (also denoted by panel). Each antenna panel may generate one or more beams (beams), i.e., each antenna panel may transmit and receive signals in one or more directions.

The antenna panel may also be denoted as an antenna array (antenna array) or an antenna sub-array (antennasurbaray). One antenna panel may include one or more antenna arrays (antenna sub-arrays). An antenna panel may be controlled by one or more oscillators (oscillators). One radio frequency circuit may drive one or more antenna elements on the antenna panel. Thus, one antenna panel may be driven by one radio frequency link, or may be driven by multiple radio frequency links. The radio frequency link may also be referred to as a receive path and/or a transmit path, a receiver branch (receiver branch), and so on. Therefore, the antenna panel may also be replaced by a radio frequency link or a plurality of radio frequency links driving one antenna panel or one or more radio frequency links controlled by one crystal oscillator.

An antenna panel may also be a logical concept, an antenna panel may be a logical entity, (i.e. not embodying physical antenna structures), such as a set of antenna ports, or a set of transmit and/or receive beams, or a set of transmit and/or receive directions.

In the embodiment of the present application, the terminal device and the network device may distinguish the antenna panel by the panel identification ID. The identifier of the antenna panel may be a logical identifier, or may be embodied as a reference signal resource set identifier (and/or a synchronization signal block resource set identifier), for example, a Sounding Reference Signal (SRS) resource set ID, a channel state information reference signal (CSI-RS) resource set ID, or the like, or may be a reference signal resource identifier (and/or a synchronization signal block resource identifier), for example, an SRS resource ID, a CSI-RS resource ID, or the like. When the panel is identified as the identifier of the reference signal resource or the reference signal resource set, if the identifier is the uplink reference signal resource (or the uplink reference signal resource set), the identifier corresponds to the uplink transmitting antenna panel or the downlink receiving panel corresponding to the uplink transmitting antenna panel which transmits the uplink reference signal resource (or the uplink reference signal resource set); if the identifier is a downlink reference signal resource and/or a synchronization signal resource, the identifier corresponds to a downlink receiving panel for receiving the downlink resource and/or the synchronization signal resource or an uplink sending panel corresponding to the downlink receiving panel.

The signaling indication sent by the network device to the terminal device referred to herein may be any one or more (e.g., a combination of) the following: RRC signaling, media access control element (MAC CE) signaling, DCI signaling.

The signaling referred to herein may also include broadcast channel information, system messages, system message updates, remaining system messages. The information sent by the terminal device to the network device may be one or more (e.g., a combination of) uplink RRC signaling, uplink MAC-CE signaling, and Uplink Control Information (UCI) signaling.

According to the protocol of long term evolution LTE/NR, in the physical layer, uplink communication includes transmission of an uplink physical channel and an uplink signal. The uplink physical channel includes a random access channel (PRACH), an uplink control channel (PUCCH), an uplink data channel (PUSCH), and the like, and the uplink signal includes an SRS, an uplink control channel demodulation reference signal (PUCCH-DMRS), an uplink data channel demodulation reference signal (PUSCH-DMRS), an uplink phase noise tracking signal (PTRS), and the like. The downlink communication includes transmission of a downlink physical channel and a downlink signal. The downlink physical channel includes a broadcast channel (PBCH), a downlink control channel (PDCCH), a downlink data channel (PDSCH), etc., and the downlink signal includes a Primary Synchronization Signal (PSS)/a Secondary Synchronization Signal (SSS), a downlink control channel demodulation reference signal (PDCCH-DMRS), a downlink data channel demodulation reference signal (PDSCH-DMRS), a downlink PTRS, a CSI-RS, a cell signal (CRS) (none of NR), a fine synchronization signal (TRS), etc.

The transmitting/receiving antenna panel can be signaled by the network device for the above-mentioned physical channels/signals, or the network device is recommended by the terminal device to configure the transmitting/receiving antenna panel, or the transmitting/receiving antenna panel is predefined by the protocol.

The following briefly describes a method of configuring the antenna panel.

Taking the uplink control channel PUCCH as an example, if there are multiple PUCCH resources/resource sets, the network device may configure an antenna panel list for one PUCCH resource/resource set or multiple PUCCH resources/resource sets. Alternatively, the network device may configure one antenna panel list for all PUCCH resources of one terminal device, and the network device may also configure one antenna panel list for all PUCCH resource/resource sets of one terminal device in one band (band) or carrier (cell) or bandwidth portion (BWP). There are one or more antenna panel identifications in an antenna panel list.

It should be understood that the above configuration method may be used for other physical channels/signals as well. For example, for a downlink control channel, if there are multiple control channel resource sets (core sets) or search space sets (search space sets), the network device may configure an antenna panel list for one core/search space set.

Alternatively, the antenna panel list may be configured by RRC signaling.

Alternatively, the information of the antenna panel may be configured in a beam indication, for example, in an uplink beam indication (spatial indication) or in a downlink Transmission Configuration Indication (TCI). It is to be understood that the configuration and activation method of the beam indication may be used for configuration and activation of the antenna panel, for example, the beam configuration and activation represent configuration and activation of the corresponding antenna panel.

Further, the network device may configure the activated antenna panel. Taking the uplink control channel PUCCH as an example, the network device may activate one or more antenna panels for one PUCCH resource/resource set. The network device may also activate one or more antenna panels for multiple PUCCH resources/resource sets.

It should be understood that the above configuration method can be used for other physical channels/signals, and is not described herein.

Alternatively, activating the antenna panel may be indicated by MAC CE signaling.

Alternatively, the activated antenna panel may be one or more of the above-described RRC signaling configured antenna panels.

Optionally, the format of the MAC CE signaling includes the following contents: carrier (cell) and/or bandwidth part (BWP) identification, identification of one or more PUCCH resources/resource sets, identification of antenna panel. The mark of the antenna panel may be a relative mark, an absolute mark, or a { S }₀，S₁，…，S_nForm of, n is equal to the size of the RRC configured antenna panel list. S₀Antenna panel list indicating RRC signaling configuration with 1 identifying lowest/highest/first/last antenna panel activated, S₁An antenna panel identified as second low/second high/second last in the list of antenna panels for RRC signaling configuration is indicated as 1 and so on. S₀An antenna panel identified lowest/highest/first/last in the list of antenna panels for RRC signaling configuration is deactivated S₁A value of 0 indicates that the antenna panel identified as second low/second high/second last in the list of antenna panels for the RRC signaling configuration is deactivated, and so on. The deactivation may be understood as putting the antenna panel in a sleep state (also referred to herein as an inactive state).

Alternatively, activating an antenna panel may be indicated by DCI signaling. The bit length of the field indicating the antenna panel in the DCI signaling may be determined by the capability of the terminal device, or may be determined by the size of the antenna panel list configured in the RRC signaling, and is not limited herein.

It should be understood that the antenna panels are identical, essentially the same physical or logical entity of the antenna panels used. The method can be embodied as follows: the antenna panel identifications are the same, or all or part of the information carried in the antenna panel identifications is the same. It can also be embodied as: the antenna panel identifications are associated, or all or part of the information carried in the antenna panel identifications is associated. Here, the association may refer to uplink and downlink transmission/reception antenna panel association, for example, { transmission antenna panel #1, reception antenna panel #1} is a fixed transmission-reception pair. Association may also refer to reference signal/reference signal set association representing an antenna panel, e.g., { CSI-RS resource set #1, SRS resource set #2 }. The association relationship may be notified by the network device, or fed back by the terminal device, or determined by a protocol predefined rule, which is not limited in this embodiment of the present application.

3. Beam pairing relationships

The beam pairing relationship, i.e., the pairing relationship between the transmission beam and the reception beam, may also be referred to as the pairing relationship between the spatial transmission filter and the spatial reception filter. A large beamforming gain can be obtained for transmitting signals between the transmit beam and the receive beam having the beam pairing relationship.

In one implementation, the transmitting end may transmit the reference signal in a beam scanning manner, and the receiving end may also receive the reference signal in a beam scanning manner. Specifically, the transmitting end may form beams with different directivities in space by means of beam forming, and may poll on a plurality of beams with different directivities to transmit the reference signal through the beams with different directivities, so that the power of the reference signal transmitting the reference signal in the direction in which the transmitting beam is directed may be maximized. The receiving end can also form beams with different directivities in space in a beam forming mode, and can poll on a plurality of beams with different directivities to receive the reference signal through the beams with different directivities, so that the power of the reference signal received by the receiving end can be maximized in the direction pointed by the received beam.

By traversing each of the transmission beams and the reception beams, the receiving end can perform channel measurement based on the received reference signal, and report the measurement result to the transmitting end through Channel State Information (CSI). For example, the receiving end may report a part of reference signal resource with larger Reference Signal Receiving Power (RSRP) to the transmitting end, for example, report an identifier of the reference signal resource, so that the transmitting end receives and transmits signals by using a beam pairing relationship with better channel quality when transmitting data or signaling. The terminal device may be according to

4. Spatial Relationship (SR)

The spatial relationship may be used for the terminal device to determine the transmission beam of the uplink signal or uplink channel.

Each spatial relationship may include a reference signal resource identification. The reference signal resource identifier may be, for example, any one of the following items: an SSB Index (SSB-Index), a non-zero power CSI-RS reference signal Resource identity (NZP-CSI-RS-Resource Id), and a sounding reference signal Resource identity (SRS Resource Id, SRI, where Sounding Reference Signal (SRS) is abbreviated).

The reference signal resource identifier refers to an identifier of a reference signal resource used in a beam training process. One spatial relationship is used to determine one transmit beam. The terminal device may maintain a correspondence between the reference signal resource identifier and the transmission beam during the beam training process, and the network device may maintain a correspondence between the reference signal resource identifier and the reception beam during the beam training process. By referring to the signal resource identifier, the pairing relationship between the transmission beam and the reception beam can be established.

In the communication procedure thereafter, the terminal device may determine a transmission beam based on the spatial relationship indicated by the network device, and the network device may determine a reception beam based on the same spatial relationship.

In addition, each spatial relationship may also include power control information. The power control information may include, for example, at least one of: the desired received power, the path loss reference signal and the path loss compensation parameter alpha. The terminal device can determine what transmission power to use to transmit the uplink signal based on the power control information.

It should be understood that the information included in the spatial relationship recited herein is merely an example, and should not constitute any limitation to the present application. For example, the spatial relationship may further include an index (physical cell ID, PCI) of a physical cell, an index (SCI) of a serving cell, a bandwidth part (BWP) Identifier (ID), and the like, which will not be described in detail herein.

Since the beams have a certain spatial directivity, in order to satisfy wide area coverage, the terminal device may be configured with a plurality of antenna panels so as to cover a plurality of different directions. The beam may receive or transmit data through the antenna panel. The terminal device uses only one antenna panel at a time, and other antenna panels of the terminal device may be in a sleep state (also referred to as an off state or an inactive state). It takes a certain time, for example, 2 ms to 3 ms, for one antenna panel to transition from the sleep state to the active state (also referred to as an on state). One BWP may configure a plurality of Physical Uplink Control Channel (PUCCH) resources, where each PUCCH resource may have different transmission beams, and the different transmission beams may be formed by different antenna panels. The network device may schedule the terminal device to transmit a Physical Uplink Shared Channel (PUSCH) through Downlink Control Information (DCI). The transmit beam for PUSCH may be configured by the network device or agreed upon by the protocol.

One method for determining the transmission beam of the PUSCH is that the network device carries an indication information to indirectly indicate in uplink scheduling (UL grant), for example, the SRI field in DCI format 0_1 in protocol R15. The indication information identifies an uplink SRS resource, and the SRS transmission beam and the transmission precoding matrix are used for PUSCH transmission. The transmission beam of the SRS is configured by the network device.

If the network device does not explicitly indicate the above indication information in uplink scheduling, for example, in the protocol R15, the network device performs uplink scheduling through DCI format 0_0, in this case, one method for determining the transmission beam of the PUSCH is that the terminal device determines the transmission beam of the PUSCH according to the transmission beam of the PUCCH, where the transmission beam of the PUCCH is configured by the network device. Specifically, the terminal device may use, as a transmission beam of the PUSCH, a transmission beam of a PUCCH resource whose identification ID is smallest among the plurality of PUCCH resources.

In existing protocols, each BWP may configure multiple PUCCH resources, each PUCCH resource may correspond to a different transmit beam, and the different transmit beams may be formed by different antenna panels. When the terminal device needs to switch the beam, it may need to switch the antenna panel and switch to the corresponding beam on the antenna panel to transmit and receive signals. Therefore, in the case that the network device does not explicitly instruct the transmission beam, if the transmission beam of the PUSCH is determined according to the rule that the PUCCH resource ID is minimum, there may be a problem that the antenna panel of the terminal device needs to be frequently switched, and if the transition time of the antenna panel from the sleep state to the active state is further taken into consideration, there may be a problem that the terminal device does not switch the antenna panel yet, and the scheduled resource arrives, that is, the antenna panel of the terminal device is not in time for switching.

For example, two PUCCH resources (PUCCH resource 1 and PUCCH resource 2) are respectively configured with different beams generated by different antenna panels (antenna panel 1 and antenna panel 2) as transmission beams, and assuming that PUCCH resource 2 is frequently used, antenna panel 2 is always in an active state, and antenna panel 1 corresponding to PUCCH resource 1 is in a sleep state or an off state (or referred to as an inactive state) for a long time due to power saving or the like. In this case, the PUSCH scheduled by DCI format 0_0 uses the transmission beam of PUCCH resource 1 with a smaller ID, which may cause unnecessary switching of the antenna panel, and the antenna panel 1 needs to be turned on for a while, if the PUSCH scheduled by DCI format 0_0 is urgent, for example, the time interval between DCI and PUSCH is smaller than the turn-on time of the antenna panel, the antenna panel may not be in time for switching, and the terminal device may not transmit the PUSCH according to the scheduling of the network device.

In view of this, the present application provides a data transmission method, which is beneficial to avoiding the problems of frequent switching and late switching of an antenna panel of a terminal device, and further improving data transmission performance.

Note that, in some cases, panel activation and panel switching are collectively referred to as panel switching, and a delay time of panel activation and a delay time of panel switching are collectively referred to as a delay time of panel switching. This application does not preclude such understanding. The embodiments shown below illustrate panel activation and panel switching as two separate concepts for ease of understanding only. And should not be construed as limiting the application in any way.

Before describing the method provided by the embodiments of the present application, the following description is made.

First, in the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. If the information indicated by a certain piece of information (such as configuration information described below) is referred to as information to be indicated, in a specific implementation process, there are many ways to indicate the information to be indicated, for example, but not limited to, the information to be indicated may be directly indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein an association relationship exists between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other part of the information to be indicated is known or predetermined. For example, the indication of the specific information may be implemented by means of a predetermined arrangement order of the respective information (e.g., protocol specification), thereby reducing the indication overhead to some extent.

Second, in the embodiments shown below, terms and acronyms such as Downlink Control Information (DCI), a media access control element (MAC CE), Radio Resource Control (RRC), a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH), a channel state information reference signal (CSI-RS), a Sounding Reference Signal (SRS), and the like are given as illustrative examples for convenience of description and should not be limited to the present application. This application is not intended to exclude the possibility that other terms may be defined in existing or future protocols to carry out the same or similar functions.

Third, the first, second and various numerical numbers in the embodiments shown below are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. For example, different indication information, different beams, different panels, etc. are distinguished.

Fourth, the "protocol" referred to in the embodiments of the present application may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

Fifth, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, and c, may represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, wherein a, b and c can be single or multiple.

The data transmission method and apparatus provided in the present application will be described in detail below with reference to the accompanying drawings.

It should be understood that the technical solution of the present application can be applied to a wireless communication system, for example, the communication system 100 shown in fig. 1. Two communication devices in a wireless communication system may have a wireless communication connection relationship therebetween, and one of the two communication devices may correspond to the terminal equipment 120 shown in fig. 1, for example, may be the terminal equipment shown in fig. 1, or may be a chip configured in the terminal equipment; the other of the two communication apparatuses may correspond to the network device 110 shown in fig. 1, and for example, may be the network device shown in fig. 1, or may be a chip configured in the network device.

Hereinafter, without loss of generality, the signal transmission method provided by the embodiment of the present application is described in detail by taking an interaction process between a terminal device and a network device as an example.

Fig. 2 is a schematic flow chart of a data transmission method 200 provided by the embodiment of the present application, which is shown from the perspective of device interaction. As shown, the method 200 shown in fig. 2 may include steps 210 through 230. The method 200 is described in detail below with reference to the figures.

S210, the terminal equipment determines a transmission beam of an uplink channel;

s220, the network equipment determines the transmission beam of the uplink channel;

s230, the terminal device transmits the uplink channel by using the transmission beam; correspondingly, the network device receives the uplink channel by using a receiving beam corresponding to the transmitting beam.

Wherein the transmission beam is a transmission beam used by the terminal device recently or a transmission beam to be used recently; and/or the antenna panel corresponding to the transmission beam is an antenna panel used recently by the terminal equipment or an antenna panel to be used recently.

It should be understood that the above uplink channel may also be referred to as a first uplink channel, and the first uplink channel is used for description hereinafter. The first uplink channel may be an uplink data channel, e.g., a PUSCH. The above-mentioned transmission beam may also be referred to as a "default transmission beam", "default transmission beam", and the like, and the name of the transmission beam is not limited in the present application.

Specifically, before the network device and the terminal device transmit the first uplink channel, both the terminal device and the network device need to determine a transmission beam of the first uplink channel, the terminal device may transmit the first uplink channel using the transmission beam, and the network device may receive the first uplink channel using a reception beam corresponding to the transmission beam. The transmission beam may be a transmission beam used by the terminal device recently or a transmission beam to be used recently, and/or the antenna panel corresponding to the transmission beam is an antenna panel used by the terminal device recently or an antenna panel to be used recently. In other words, the transmission beam may be a transmission beam that has been used by the terminal device recently, and then the antenna panel corresponding to the transmission beam is the antenna panel that has been used by the terminal device recently, and the transmission beam is a transmission beam that will be used by the terminal device recently, and then the antenna panel corresponding to the transmission beam is the antenna panel that will be used by the terminal device recently. However, it is not necessarily the case that the antenna panel corresponding to the transmission beam is the antenna panel used by the terminal device most recently, but the antenna panel may form a plurality of beams, and the transmission beam of the first uplink channel is not necessarily the one used by the terminal device most recently, for example, the transmission beam may be one of the beams corresponding to the antenna panel with the highest signal quality, or the transmission beam may be any one of three beams corresponding to the antenna panel with the highest signal quality, which is not limited in the embodiment of the present application. Similarly, the antenna panel corresponding to the transmission beam is the antenna panel to be used by the terminal device recently, but the antenna panel may form a plurality of beams, and the transmission beam of the first uplink channel is not necessarily the one to be used by the terminal device recently.

It should also be understood that the transmission time unit described in the embodiments of the present application refers to a time unit in which data or a signal has been transmitted (including transmission and/or reception), or a time unit in which data or a signal is to be transmitted. The above-mentioned "most recently used" beam or antenna panel indicates a beam or antenna panel corresponding to the last transmission time unit (for example, the last time slot for transmitting data or signals) before the terminal device transmits the first uplink channel, in other words, the time unit corresponding to the "most recently used" beam or antenna panel is a time unit which is before the time unit for transmitting the first uplink channel, has transmitted data or signals, and has the smallest time interval with the time unit for transmitting the first uplink channel; the above-mentioned "beam or antenna panel to be used last" indicates a beam or antenna panel corresponding to a first transmission time unit (for example, a first slot for transmitting data or a signal) after the terminal device transmits the first uplink channel, in other words, the time unit corresponding to the "beam or antenna panel to be used last" is a time unit which is after the time unit for transmitting the first uplink channel, is to transmit data or a signal, and has a minimum time interval with the time unit for transmitting the first uplink channel. Typically, the "most recently used" beam or antenna panel is configured for the terminal device by the network device through signaling. For example, taking an antenna panel as an example, if an antenna panel used by a terminal device most recently is the antenna panel 2, and an antenna panel to be used by the terminal device is the antenna panel 3, the terminal device may determine the transmission beam of the first uplink channel as the antenna panel 2, and the terminal device may also determine the transmission beam of the first uplink channel as the antenna panel 3, which may prevent the terminal device from switching the antenna panels as much as possible, and this is not limited in this embodiment of the present application.

According to the data transmission method, the antenna panel used by the terminal device recently or the antenna panel to be used recently is used as the antenna panel corresponding to the transmitting beam of the first uplink channel transmitted by the terminal device, so that the problems of frequent switching and untimely switching of the antenna panel of the terminal device are avoided, and the data transmission performance is improved.

Optionally, the time interval between the time slot corresponding to the "used last" and the current time of sending the PUSCH cannot be too large, otherwise the antenna panel may be already turned off and in an inactive state, and if the PUSCH is to be retransmitted, the turned-off antenna panel needs to be activated, which takes a certain time. Similarly, the time interval between the time slot corresponding to the "most recently used" and the current time of sending the PUSCH cannot be too large, otherwise the antenna panel may not be activated yet, and if the PUSCH is to be transmitted, the antenna panel in the inactive state needs to be activated in advance, which needs to consume a certain time. The maximum value of the time interval may be agreed by a protocol or configured by the network device through signaling.

As an optional embodiment, the method further comprises: the terminal equipment determines a first time interval between a transmission time unit corresponding to the recently used transmission beam or antenna panel and a time unit for transmitting the first uplink channel and a second time interval between the transmission time unit corresponding to the recently used transmission beam or antenna panel and the time unit for transmitting the first uplink channel; and the terminal device takes the transmitting beam or the antenna panel corresponding to the smaller time interval of the first time interval and the second time interval as the transmitting beam or the antenna panel corresponding to the transmitting beam.

In this way, the terminal device can reasonably select from the recently used transmission beam or antenna panel and the recently used transmission beam or antenna panel according to specific conditions, so that the terminal device can adopt the antenna panel in an activated state as much as possible, thereby avoiding the problems of frequent switching and untimely switching of the antenna panel of the terminal device. The processing actions performed by the network device are similar to those performed by the terminal device, and are not described herein again.

As an optional embodiment, before the terminal device determines the transmission beam of the first uplink channel, the method further includes: and if the network device sends control information to a terminal device, correspondingly, the terminal device receives the control information from the network device, the control information is used for scheduling the first uplink channel, and the control information does not include information used for indicating a sending beam of the first uplink channel and information used for indicating an antenna panel corresponding to the sending beam of the first uplink channel.

As an optional embodiment, before the terminal device determines the transmission beam of the first uplink channel, the method further includes: and if the network device sends control information to the terminal device, correspondingly, the terminal device receives the control information from the network device, where the control information is used to schedule the first uplink channel, the control information includes information used to indicate an antenna panel corresponding to a sending beam of the first uplink channel, and the control information does not include information used to indicate a sending beam of the first uplink channel.

As an optional embodiment, the transmission beam is a transmission beam corresponding to a physical uplink control channel PUCCH resource that has been used recently by the terminal device or a PUCCH resource that will be used recently.

Specifically, the transmission beam may refer to a PUCCH resource that has been used recently by the terminal device or a PUCCH resource to be used recently. In other words, the transmission beam may be a transmission beam corresponding to a PUCCH resource that has been used recently by the terminal device, or the transmission beam may be a transmission beam corresponding to a PUCCH resource that will be used recently by the terminal device. It should be understood that the PUCCH resource is configured for the terminal device by the network device through signaling.

As an optional embodiment, before the terminal device determines the transmission beam of the first uplink channel, the method further includes: if the network device sends second configuration information to the terminal device, correspondingly, the terminal device receives the second configuration information from the network device, where the second configuration information is used to configure resources of a second uplink channel, and the resources include at least one of time domain resources, frequency domain resources, a transmission beam of the second uplink channel, and an antenna panel corresponding to the transmission beam of the second uplink channel; the determining, by the terminal device, a transmission beam of a first uplink channel includes: and the terminal equipment determines the sending beam of the first uplink channel according to the second configuration information.

For example, if the second uplink channel is a PUCCH, the network device may configure one or more PUCCH resources for the terminal device through the second configuration information. Wherein, one PUCCH resource may include: time-frequency resources of the PUCCH resource (e.g., information of occupied Resource Elements (REs)), time-domain behaviors of the PUCCH resource (e.g., period, offset, etc.), and a transmission beam (PUCCH spatial relationship) of the PUCCH resource. The transmission beam indication may be used to indicate a transmission beam of the PUCCH resource, and specifically may include an identifier of an uplink beam management resource, such as an SRS resource ID and/or an SRS resource set ID, and an identifier of a downlink beam management resource, such as a Synchronization Signal Block (SSB) index (index), a CSI-RS resource ID and/or a CSI RS resource set ID.

Optionally, the PUCCH resources may further include: the transmitting antenna panel of the PUCCH resource specifically includes an explicit or implicit antenna panel identifier, a group number of a group of beams formed by the antenna panel, an identifier of an uplink beam management resource set, such as an SRS resource ID and/or an SRS resource set ID, and an identifier of a downlink beam management resource set, such as an ssbinder, a CSI-RS resource ID and/or a CSI RS resource set ID.

As an optional embodiment, if the PUCCH resource used recently by the terminal device or the PUCCH resource to be used recently includes multiple PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID or a largest identification ID among the multiple PUCCH resources.

As an optional embodiment, if the antenna panel corresponding to the transmission beam is an antenna panel used by the terminal device most recently or an antenna panel to be used by the terminal device most recently, and there are multiple PUCCH resources configured with the antenna panel used by the terminal device most recently or the antenna panel to be used by the terminal device most recently, the transmission beam is a transmission beam corresponding to a PUCCH resource with a minimum or maximum identification ID among the multiple PUCCH resources.

Specifically, the transmission beam is a transmission beam corresponding to a PUCCH resource having a smallest or largest ID among a plurality of PUCCH resources in which the antenna panel that has been used most recently is arranged. For example, if the antenna panel used by the terminal device most recently is the antenna panel 2, and the PUCCH resource configured with the antenna panel 2 includes PUCCH resource 2, PUCCH resource 4, and PUCCH resource 5, then the terminal device may determine that the transmission beam of the first uplink channel is the transmission beam corresponding to PUCCH resource 2, or the terminal device may determine that the transmission beam of the first uplink channel is the transmission beam corresponding to PUCCH resource 5.

It should be understood that the above ID min or ID max is only one rule that the network device and the terminal device determine the transmission beam in a default manner, and the terminal device may also refer to the PUCCH resource of the specified ID, which is not limited in this embodiment of the present application.

As an optional embodiment, the method further comprises: the terminal equipment judges whether an uplink antenna panel used by the terminal equipment recently is in an activated state; if the uplink antenna panel used by the terminal equipment recently is in an activated state, the terminal equipment determines that the antenna panel corresponding to the sending beam is the uplink antenna panel used by the terminal equipment recently; or, if the uplink antenna panel used by the terminal device recently is in an inactive state, the terminal device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel used by the terminal device recently.

As an optional embodiment, the method further comprises: the network equipment judges whether an uplink antenna panel used by the terminal equipment recently is in an activated state; if the uplink antenna panel used by the terminal device recently is in an activated state, the network device determines that the antenna panel corresponding to the transmission beam is the uplink antenna panel used by the terminal device recently; or, if the uplink antenna panel used by the terminal device recently is in an inactive state, the network device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel used by the terminal device recently.

Similarly, in order to ensure that the network device and the terminal device understand consistently, so that the network device accurately receives the first uplink channel by using the receive beam corresponding to the transmit beam determined by the terminal device, the network device needs to determine whether the uplink antenna panel of the terminal device is in an activated state by using the same method as the terminal device, thereby determining whether the uplink antenna panel or the downlink antenna panel is used by the terminal device to transmit the first uplink channel, which is not described herein again.

As an optional embodiment, the method further comprises: the terminal equipment determines a third time interval between the time unit of the last uplink transmission of the terminal equipment and the time unit of the first uplink channel transmission of the terminal equipment; the terminal equipment determines a fourth time interval between a time unit of the last downlink receiving of the terminal equipment and a time unit of the first uplink channel sent by the terminal equipment; and the terminal equipment determines the antenna panel corresponding to the smaller time interval of the third time interval and the fourth time interval as the antenna panel corresponding to the transmitting beam.

For example, the time unit for transmitting the first uplink channel is n, most recentlyThe time unit of one uplink transmission is n-n₁The time unit of the last downlink reception is n-n₂I.e. the third time interval is n₁The fourth time interval is n₂The terminal device can select n₁And n₂And the antenna panel corresponding to the time unit corresponding to the smaller value. Wherein n, n₁、n₂Are each an integer greater than or equal to 0.

Therefore, the terminal equipment can reasonably select from the uplink antenna panel used recently and the downlink antenna panel used recently according to specific conditions, so that the terminal equipment adopts the antenna panel in an activated state as much as possible, and the problems of frequent switching and untimely switching of the antenna panel of the terminal equipment are avoided. The processing actions performed by the network device are similar to those performed by the terminal device, and are not described herein again.

As an optional embodiment, the method further comprises: the terminal equipment determines a fifth time interval between a time unit which is recently transmitted by the terminal equipment in an uplink mode and a time unit which is transmitted by the terminal equipment in the first uplink channel; the terminal equipment determines a sixth time interval between a time unit which is recently received by the terminal equipment in a downlink mode and a time unit which is sent by the terminal equipment to the first uplink channel; and the terminal equipment determines the antenna panel corresponding to the smaller time interval of the fifth time interval and the sixth time interval as the antenna panel corresponding to the transmitting beam.

For example, the time unit for transmitting the first uplink channel is n, and the time unit to be transmitted uplink recently is n + n₃The time unit to be received in downlink is n + n₄I.e. the above-mentioned fifth time interval is n₃The sixth time interval is n₄The terminal device can select n₃And n₄And the antenna panel corresponding to the time unit corresponding to the smaller value. Wherein n, n₃、n₄Are each an integer greater than or equal to 0.

In the above example, the time unit for transmitting the first uplink channel is n, and the time unit for the last uplink transmission is n-n₁The time unit of the last downlink reception is n-n₂The time unit to be sent uplink recently is n + n₃The time unit to be received in downlink is n + n₄The terminal device can select n₁、n₂、n₃And n₄And the antenna panel corresponding to the time unit corresponding to the minimum value.

In this embodiment, the processing actions performed by the network device are similar to those performed by the terminal device, and are not described herein again.

As an optional embodiment, the method further comprises: the terminal equipment judges whether an uplink antenna panel which is recently used by the terminal equipment is in an activated state; if the uplink antenna panel to be used by the terminal equipment recently is in an activated state, the terminal equipment determines that the antenna panel corresponding to the sending beam is the uplink antenna panel to be used by the terminal equipment recently; or, if the uplink antenna panel to be used by the terminal device recently is in an inactive state, the terminal device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel to be used by the terminal device recently.

Specifically, in consideration of a certain keep-alive duration (i.e. a time length in an active state) of the antenna panel, the terminal device may determine whether the uplink antenna panel to be used recently is in an active state, if it is determined that the antenna panel to be used recently is referred to. If the uplink antenna panel to be used recently is in an activated state, the terminal device may use the uplink antenna panel to be used recently. If the uplink antenna panel to be used recently is in an inactive state, the terminal device may use the downlink antenna panel to be used recently. Further, the terminal device may select one of the downlink antenna panels that is in an active state, which is to be used recently.

As an optional embodiment, the method further comprises: the network equipment judges whether an uplink antenna panel which is recently used by the terminal equipment is in an activated state; if the uplink antenna panel to be used by the terminal equipment recently is in an activated state, the network equipment determines that the antenna panel corresponding to the transmission beam is the uplink antenna panel to be used by the terminal equipment recently; or, if the uplink antenna panel to be used by the terminal device recently is in an inactive state, the network device determines that the antenna panel corresponding to the transmission beam is the downlink antenna panel to be used by the terminal device recently.

Similarly, in order to ensure that the network device and the terminal device understand consistently, so that the network device accurately receives the first uplink channel by using the receive beam corresponding to the transmit beam determined by the terminal device, the network device needs to determine whether the uplink antenna panel is in an activated state by using the same method as the terminal device, thereby determining whether the terminal device transmits the first uplink channel by using the uplink antenna panel or the downlink antenna panel, which is not described herein again.

It should be understood that the state of the antenna panel needs to be transmitted synchronously between the network device and the terminal device, i.e. the antenna panel is in an active state or in an inactive state.

As an optional embodiment, the method further comprises: the terminal equipment sends capability information to network equipment, wherein the capability information is used for indicating the duration of the uplink antenna panel of the terminal equipment in an activated state;

correspondingly, the network equipment receives the capability information from the terminal equipment; the network device determining whether the recently used uplink antenna panel is in an active state includes: and the network equipment judges whether the uplink antenna panel used recently is in an activated state or not according to the capability information.

Specifically, the terminal device may send capability information indicating the keep-alive duration of the uplink antenna panel of the terminal device to the network device, and the network device may determine whether the uplink antenna panel of the terminal device is in an activated state according to the capability information.

As an optional embodiment, the method further comprises: the network equipment sends first configuration information to the terminal equipment, wherein the first configuration information is used for indicating the duration of requiring an uplink antenna panel of the terminal equipment to keep an activated state; correspondingly, the terminal equipment receives first configuration information from the network equipment; the method for judging whether the uplink antenna panel used by the terminal equipment recently is in an activated state by the terminal equipment comprises the following steps: and the terminal equipment judges whether the uplink antenna panel used by the terminal equipment recently is in an activated state or not according to the first configuration information.

Specifically, the network device may send, to the terminal device, first configuration information used for indicating a keep-alive duration of an uplink antenna panel of the terminal device. In other words, the first configuration information requires that the terminal device must maintain the time duration indicated by the first configuration information after the uplink antenna panel is activated. The terminal device can determine whether the uplink antenna panel of the terminal device is in an activated state according to the first configuration information.

As an optional embodiment, the first configuration information is determined by the network device according to capability information of the terminal device.

Illustratively, the capability information indicates a duration Y during which an uplink antenna panel of the terminal device can be kept activated, and the first configuration information indicates a duration X during which the network device requires the terminal device to keep the uplink antenna panel in an activated state, where X is less than or equal to Y, and both X and Y are greater than 0.

In summary, taking the first uplink channel as PUSCH and the second uplink channel as PUCCH as an example, the data transmission method provided in the embodiment of the present application can be divided into the following three possible cases:

in one possible implementation, the terminal device does not switch antenna panels nor transmit beams. That is, the transmission beam of the PUSCH is a transmission beam corresponding to a PUCCH resource that has been used recently by the terminal device. Optionally, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among the PUCCH resources.

For example, for a PUSCH scheduled by DCI 0_0 in one cell, a terminal device may transmit a PUSCH whose transmission beam coincides with a transmission beam of a PUCCH resource with a smallest ID among the most recently used PUCCH resources of the cell that activate UL BWP.

(For PUSCH scheduled by DCI format 0_0 on a cell,the UE shalltransmit PUSCH according to the spatial relation,if applicable,correspondingto the PUCCH resource with the lowest ID in the latest slot within the activeUL BWP of the cell.)

In another possible implementation, the terminal device does not switch antenna panels, switching transmission beams, i.e. switching from one beam to another on the same antenna panel. That is, the antenna panel corresponding to the transmission beam of the PUSCH is an antenna panel that has been used last time among antenna panels using PUCCH resources. Optionally, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among a plurality of PUCCH resources in which an antenna panel using PUCCH resources is arranged that has been used most recently.

For example, for a PUSCH scheduled by DCI 0_0 in one cell, the terminal device may transmit a PUSCH whose transmission beam coincides with the transmission beam of the PUCCH resource with the smallest ID among PUCCH resources corresponding to the most recently used antenna panel of the cell that activates UL BWP.

(For PUSCH scheduled by DCI format 0_0 on a cell,the UE shalltransmit PUSCH according to the spatial relation,if applicable,correspondingto the PUCCH resource with the lowest ID which has a same panel ID as thePUCCH resource in the latest slot within the active UL BWP of the cell.)

In another possible implementation manner, the terminal device adopts, as a transmit antenna panel, a transmit antenna panel corresponding to other channels/signals (including downlink channels/signals) other than the PUCCH. That is, the antenna panel corresponding to the transmission beam of the PUSCH is the antenna panel that has been used most recently among the antenna panels using the first resource. Optionally, the transmission beam is a transmission beam corresponding to a first resource with a smallest ID among a plurality of first resources configured with an antenna panel that has been used most recently among antenna panels using the first resource. Optionally, the first resource may be a PUSCH resource, an SRS resource, a CSI-RS resource, a PDSCH resource, or a PDCCH resource.

For example, for a PUSCH scheduled by DCI 0_0 in one cell, a terminal device may transmit a PUSCH whose transmission beam coincides with a transmission beam of a resource with the smallest ID among resources corresponding to an antenna panel for transmitting PUSCH, SRS, CSI-RS, PDSCH, or PDCCH, which has been used recently to activate UL/DL BWP for the cell.

(For PUSCH scheduled by DCI format 0_0 on a cell,the UE shalltransmit PUSCH according to the spatial relation,if applicable,correspondingto the resource with the lowest ID which has a same panel ID as the panelused for PUSCH/SRS/CSI-RS/PDSCH/PDCCH in the latest slot within the activeUL/DL BWP of the cell.)

The specific analysis is as follows:

The data transmission method of the present application is described in detail below with reference to specific embodiments.

Step one, network equipment sends configuration information, wherein the configuration information is used for configuring one or more PUCCH resources. And the terminal equipment receives the configuration information, and can determine the sending beam corresponding to the PUCCH resource according to the configuration information.

And step two, the terminal equipment and the network equipment carry out normal communication, including but not limited to monitoring PDCCH, measuring and reporting CSI-RS, sending SRS, sending PUCCH, transmitting PDSCH and/or PUSCH and the like according to configuration.

And step three, the network equipment sends DCI to the terminal equipment in the downlink time slot n and schedules PUSCH, wherein the DCI does not comprise beam related indication information and antenna panel related indication information. The terminal equipment receives the DCI, wherein n is an integer which is greater than or equal to 0.

And step four, the terminal equipment and the network equipment respectively determine a sending beam of the PUSCH, the sending beam is adopted to send the PUSCH in an uplink time slot m, the network equipment adopts a receiving beam corresponding to the sending beam to receive the PUSCH, and m is an integer greater than or equal to 0.

It should be understood that there is a time interval between the transmission of DCI to PUSCH, and this embodiment is denoted by k, where k is an integer greater than 0. k may be a predefined or network device configured length of time. If the subcarrier intervals of the uplink and the downlink are consistent, m is equal to n + k. If the subcarrier intervals of the uplink and the downlink are not consistent, conversion of a time unit is needed. For example,

wherein

Is a rounding-up operation, and μ _ UL and μ _ DL represent the system parameters of the uplink PUSCH and the system parameters of the downlink DCI, respectively. By the formula, the downlink time slot number n can be converted into the corresponding uplink time slot number

In an implementation manner of this embodiment, the transmission beam of the PUSCH is a transmission beam of a PUCCH resource that has been used recently, where the PUCCH resource that has been used recently is a PUCCH resource corresponding to a PUCCH that has been transmitted by the terminal device last time. It should be understood that if there are multiple PUCCH resources used last time, the terminal device may select one PUCCH resource in which the ID is the largest or smallest.

Alternatively, the "most recent time" mentioned above refers to the time slot n-x₁(or m-y₁) Last time thereafter, y₁-x₁＝k，x₁And y₁Are all integers greater than 0. In other words, the time interval between the last time slot and the current time cannot be too large, otherwise the antenna panel may be already turned off and in an inactive state, and if the PUSCH is to be retransmitted, it takes a certain time to activate the turned-off antenna panel.

It is to be understood that x is as described above₁And/or y₁May be protocol predefined or network device configured. If the time interval between the time of last PUCCH transmission and the current time (n or m) is more than x₁Or y₁The PUSCH transmission beam may refer to a PUCCH resource with a minimum ID among all PUCCH resources configured with the transmission beam, or the PUSCH transmission beam may refer to a transmission beam determined in a random access process, which is not limited in this embodiment of the present invention.

The implementation mode can ensure that the terminal equipment uses the antenna panel which is currently in the activated state to send the PUSCH without switching the antenna panel, and can avoid the problems of frequent switching and untimely switching of the antenna panel of the terminal equipment.

In another implementation manner of this embodiment, the transmission beam of the PUSCH is a transmission beam of a PUCCH resource to be used recently, where the PUCCH resource to be used recently is a PUCCH resource corresponding to a PUCCH to be transmitted by the terminal device last time. It should be understood that if there are multiple PUCCH resources to be transmitted at the last time, the terminal device may select one PUCCH resource in which the ID is the largest or the smallest.

Alternatively, the above "last time" refers to a time slot n + x₂(or m + y)₂) Last time before, y₂-x₂＝k，x₂And y₂Are all integers greater than 0. In other words, the time interval between the last time slot and the current time cannot be too large, otherwise the antenna panel may not be activated yet, and if PUSCH is to be transmitted, the antenna panel in the inactivated state needs to be activated early,it takes a certain time.

It is to be understood that x is as described above₂And/or y₂May be protocol predefined or network device configured. If the time interval between the time of the PUCCH to be transmitted last and the current time (n or m) is more than x₂Or y₂The PUSCH transmission beam may refer to a PUCCH resource with a minimum ID among all PUCCH resources configured with the transmission beam, or the PUSCH transmission beam may refer to a transmission beam determined in a random access process, which is not limited in this embodiment of the present invention.

The implementation mode can ensure that the terminal equipment does not need to switch to send the PUCCH to be transmitted next time after the terminal equipment switches the antenna panel to send the PUSCH, and can also avoid the problems of frequent switching and untimely switching of the antenna panel of the terminal equipment.

In another implementation of this embodiment, the transmit antenna panel of the PUSCH may be an antenna panel of a PUCCH resource that was recently used. Among the plurality of PUCCH resources configured with the same antenna panel, the transmission beam of the PUSCH may be a transmission beam of a PUCCH resource in which the ID is the largest or smallest. Likewise, the above-mentioned "most recently used" is an antenna panel that the terminal device has used last time. Alternatively, the "most recent time" mentioned above refers to the time slot n-x₁(or m-y₁) Last time thereafter, y₁-x₁K. In other words, the time interval between the last time slot and the current time cannot be too large, and will not be described herein.

In another implementation of this embodiment, the transmit antenna panel of the PUSCH may be the antenna panel of the PUCCH resource that will be used recently. Among a plurality of PUCCH resources configured with the same antenna panel, the transmission beam of the PUSCH may be a transmission beam of a PUCCH resource in which the ID is the largest or smallest.

Likewise, the above-mentioned "to be used last" is an antenna panel to be used last time by the terminal device. Alternatively, the "most recent time" mentioned above refers to the time slot n-x₂(or m-y₂) Last time thereafter, y₂-x₂K. Changeable pipeIn other words, the time interval between the last time slot and the current time cannot be too large, and will not be described herein again.

It should be understood that the antenna panel may be an uplink antenna panel or a downlink antenna panel, for example, an antenna panel used by a terminal device to receive PDCCH, CSI-RS, or PDSCH. In another implementation manner of this embodiment, the terminal device may preferentially select the uplink antenna panel that has been used recently to transmit the PUSCH, and if the uplink antenna panel that has been used recently is not activated, the terminal device may select the downlink antenna panel that has been used recently to transmit the PUSCH. As shown in fig. 3, the terminal device transmits PUCCH resource 1 using antenna panel 1, and transmits PUCCH resource 2 using antenna panel 2, that is, antenna panel 1 and antenna panel 2 are uplink antenna panels, and antenna panel 2 is an uplink antenna panel that has been recently used by the terminal device. When sending the PUSCH, the terminal device may first determine whether the antenna panel 2 is in an active state, and if the antenna panel 2 is in the active state, the terminal device may send the PUSCH using the antenna panel 2. If the antenna panel 2 is in an inactive state, the terminal device may transmit PUSCH using the most recently used downlink antenna panel. It should be understood that the downlink antenna panel may be determined from the downlink antenna panel in the active state.

It should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The data transmission method according to the embodiment of the present application is described in detail above with reference to fig. 1 to 3, and the data transmission device according to the embodiment of the present application is described in detail below with reference to fig. 4 to 5.

Fig. 4 shows a data transmission apparatus 400 provided in an embodiment of the present application. The apparatus 400 may be a terminal device, or may be a chip in the terminal device. The apparatus 400 may be a network device, or may be a chip in the network device. The apparatus 400 comprises: a processing unit 410 and a transceiving unit 420.

In one possible implementation manner, the apparatus 400 is configured to execute the respective flows and steps corresponding to the terminal device in the method 200.

The processing unit 410 is configured to: determining a transmission beam of a first uplink channel; the transceiving unit 420 is configured to: transmitting the first uplink channel by using the transmission beam; wherein the transmission beam is a transmission beam that has been used by the apparatus most recently or a transmission beam that will be used most recently; and/or the antenna panel corresponding to the transmission beam is the antenna panel used by the device recently or the antenna panel to be used recently.

The antenna panel corresponding to the transmission beam is an antenna panel used recently by the apparatus or an antenna panel to be used recently, and may be understood as follows: the transmission beam is a beam corresponding to an antenna panel used by the device recently or a beam corresponding to an antenna panel to be used recently.

Optionally, the transmission beam is a transmission beam corresponding to a physical uplink control channel PUCCH resource used by the apparatus most recently or a PUCCH resource to be used most recently.

Optionally, if the PUCCH resource used by the apparatus recently or the PUCCH resource to be used recently includes a plurality of PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the plurality of PUCCH resources.

Optionally, if the antenna panel corresponding to the transmission beam is an antenna panel used by the apparatus most recently or an antenna panel to be used by the apparatus most recently, and there are multiple PUCCH resources configured with the antenna panel used by the apparatus most recently or the antenna panel to be used by the apparatus most recently, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the multiple PUCCH resources.

Optionally, if the uplink antenna panel used by the apparatus recently is in an activated state, the transmission beam is a beam corresponding to the uplink antenna panel used by the apparatus recently; or, if the uplink antenna panel recently used by the apparatus is in an inactive state, the transmission beam is a beam corresponding to the downlink antenna panel recently used by the apparatus.

Optionally, the processing unit 410 is further configured to: judging whether an uplink antenna panel used by the device recently is in an activated state; if the uplink antenna panel used by the device recently is in an activated state, determining that the antenna panel corresponding to the transmitting beam is the uplink antenna panel used by the device recently; or, if the uplink antenna panel recently used by the apparatus is in an inactive state, determining that the antenna panel corresponding to the transmission beam is the downlink antenna panel recently used by the apparatus.

Optionally, the transceiver unit 420 is further configured to: receiving control information from a network device, wherein the control information is used for scheduling the first uplink channel and does not include information for indicating a transmission beam of the first uplink channel.

In one possible implementation, the apparatus 400 is configured to perform the respective procedures and steps corresponding to the network device in the method 200.

The processing unit 410 is configured to: determining a transmission beam of a first uplink channel; the transceiving unit 420 is configured to: receiving the first uplink channel by using a receiving beam corresponding to the transmitting beam; the sending beam is a sending beam used by the terminal equipment recently or a sending beam to be used recently; and/or the antenna panel corresponding to the transmission beam is an antenna panel used recently by the terminal equipment or an antenna panel to be used recently.

Optionally, the transmission beam is a transmission beam corresponding to a physical uplink control channel PUCCH resource used by the terminal device most recently or a PUCCH resource to be used most recently.

Optionally, if the PUCCH resource used by the terminal device most recently or the PUCCH resource to be used most recently includes a plurality of PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the plurality of PUCCH resources.

Optionally, if the antenna panel corresponding to the transmission beam is an antenna panel used by the terminal device most recently or an antenna panel to be used by the terminal device most recently, and there are multiple PUCCH resources configured with the antenna panel used by the terminal device most recently or the antenna panel to be used by the terminal device most recently, the transmission beam is a transmission beam corresponding to a PUCCH resource with a minimum identification ID among the multiple PUCCH resources.

Optionally, if the uplink antenna panel used by the terminal device recently is in an activated state, the transmission beam is a beam corresponding to the uplink antenna panel used by the terminal device recently; or, if the uplink antenna panel used by the terminal device recently is in an inactive state, the transmission beam is a beam corresponding to the downlink antenna panel used by the terminal device recently.

Optionally, the processing unit 410 is further configured to: judging whether the uplink antenna panel used by the terminal equipment recently is in an activated state; if the uplink antenna panel used by the terminal equipment recently is in an activated state, determining that the antenna panel corresponding to the transmitting beam is the uplink antenna panel used by the terminal equipment recently; or, if the uplink antenna panel used by the terminal device recently is in an inactive state, determining that the antenna panel corresponding to the transmission beam is the downlink antenna panel used by the terminal device recently.

Optionally, the transceiver unit 420 is further configured to: and sending control information to terminal equipment, wherein the control information is used for scheduling the first uplink channel and does not include information used for indicating a sending beam of the first uplink channel.

It should be appreciated that the apparatus 400 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 400 may be specifically a terminal device or a network device in the foregoing embodiment, and the apparatus 400 may be configured to execute each procedure and/or step corresponding to the terminal device or the network device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.

The apparatus 400 of each of the above schemes has a function of implementing corresponding steps executed by the terminal device or the network device in the above method; the functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. For example, the transceiver unit 420 may include a transmitting unit and a receiving unit, where the transmitting unit may be configured to implement each step and/or flow corresponding to the transceiver unit for performing a transmitting action, and the receiving unit may be configured to implement each step and/or flow corresponding to the transceiver unit for performing a receiving action. The transmitting unit may be replaced by a transmitter, and the receiving unit may be replaced by a receiver, which performs transceiving operations and related processing operations in the respective method embodiments, respectively.

In an embodiment of the present application, the apparatus 400 in fig. 4 may also be a chip or a chip system, for example: system on chip (SoC). Correspondingly, the receiving unit and the transmitting unit may be a transceiver circuit of the chip, and are not limited herein.

Fig. 5 illustrates another data transmission apparatus 500 provided in the embodiment of the present application. The apparatus 500 includes a processor 510, a transceiver 520, and a memory 530. Wherein the processor 510, the transceiver 520 and the memory 530 are in communication with each other via an internal connection path, the memory 530 is configured to store instructions, and the processor 510 is configured to execute the instructions stored in the memory 530 to control the transceiver 520 to transmit and/or receive signals.

In one possible implementation manner, the apparatus 500 is configured to execute the respective flows and steps corresponding to the terminal device in the method 200.

Wherein the processor 510 is configured to: determining a transmission beam of a first uplink channel; transmitting the first uplink channel through the transceiver 520 using the transmission beam;

wherein the transmission beam is a transmission beam that has been used by the apparatus most recently or a transmission beam that will be used most recently; and/or the antenna panel corresponding to the transmission beam is the antenna panel used by the device recently or the antenna panel to be used recently.

In one possible implementation, the apparatus 500 is configured to perform the respective procedures and steps corresponding to the network device in the method 200.

Wherein the processor 510 is configured to: determining a transmission beam of a first uplink channel; receiving the first uplink channel through the transceiver 520 using a receive beam corresponding to the transmit beam;

the sending beam is a sending beam used by the terminal equipment recently or a sending beam to be used recently; and/or the antenna panel corresponding to the transmission beam is an antenna panel used recently by the terminal equipment or an antenna panel to be used recently.

It should be understood that the apparatus 500 may be embodied as the terminal device or the network device in the foregoing embodiments, and may be configured to perform each step and/or flow corresponding to the terminal device or the network device in the foregoing method embodiments. Alternatively, the memory 530 may include a read-only memory and a random access memory, and provide instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 510 may be configured to execute instructions stored in the memory, and when the processor 510 executes the instructions stored in the memory, the processor 510 is configured to perform the various steps and/or processes of the method embodiments described above corresponding to the terminal device or the network device. The transceiver 520 may include a transmitter and a receiver, the transmitter may be configured to implement the steps and/or processes for performing the sending action corresponding to the transceiver, and the receiver may be configured to implement the steps and/or processes for performing the receiving action corresponding to the transceiver.

It should be understood that in the embodiment of the present application, the processor of the above apparatus may be a Central Processing Unit (CPU), and the processor may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software elements in a processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

Those of ordinary skill in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of both, and that the steps and elements of the various embodiments have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

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

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

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of data transmission, comprising:

the terminal equipment determines a transmission beam of an uplink channel;

the terminal equipment adopts the sending wave beam to send the uplink channel;

wherein the transmission beam is a transmission beam used by the terminal device recently or a transmission beam to be used recently; and/or the transmission beam is a beam corresponding to an antenna panel used by the terminal device recently or a beam corresponding to an antenna panel to be used recently.

2. The method of claim 1, wherein the transmission beam is a transmission beam corresponding to a Physical Uplink Control Channel (PUCCH) resource that has been recently used by the terminal device or a PUCCH resource that will be recently used.

3. The method according to claim 2, wherein if the PUCCH resource used recently by the terminal device or the PUCCH resource to be used recently comprises a plurality of PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the plurality of PUCCH resources.

4. The method according to claim 1, wherein if the transmission beam is a beam corresponding to a recently used antenna panel or a beam corresponding to an antenna panel to be used recently by the terminal device, and there are a plurality of PUCCH resources configured with the recently used antenna panel or the antenna panel to be used recently, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the plurality of PUCCH resources.

5. The method according to claim 1 or 4, wherein if the uplink antenna panel used by the terminal device recently is in an active state, the transmission beam is a beam corresponding to the uplink antenna panel used by the terminal device recently; or the like, or, alternatively,

and if the uplink antenna panel used by the terminal equipment recently is in an inactivated state, the sending beam is a beam corresponding to the downlink antenna panel used by the terminal equipment recently.

6. The method according to any of claims 1 to 5, wherein before the terminal device determines the transmission beam of the uplink channel, the method further comprises:

the terminal device receives control information from a network device, wherein the control information is used for scheduling the uplink channel and does not include information for indicating a transmission beam of the uplink channel.

7. A method of data transmission, comprising:

the network equipment determines a transmission beam of an uplink channel;

the network equipment receives the uplink channel by adopting a receiving beam corresponding to the transmitting beam;

the sending beam is a sending beam used by the terminal equipment recently or a sending beam to be used recently; and/or the transmission beam is a beam corresponding to an antenna panel used by the terminal device recently or a beam corresponding to an antenna panel to be used recently.

8. The method of claim 7, wherein the transmission beam is a transmission beam corresponding to a Physical Uplink Control Channel (PUCCH) resource that has been used recently by the terminal device or a PUCCH resource that will be used recently.

9. The method according to claim 8, wherein if the PUCCH resource used recently by the terminal device or the PUCCH resource to be used recently comprises multiple PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among the multiple PUCCH resources.

10. The method according to claim 7, wherein if the transmission beam is a beam corresponding to a recently used antenna panel or a beam corresponding to an antenna panel to be used recently by the terminal device, and there are a plurality of PUCCH resources configured with the recently used antenna panel or the antenna panel to be used recently, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest identification ID among the plurality of PUCCH resources.

11. The method according to claim 7 or 10, wherein the uplink antenna panel used by the terminal device most recently is in an active state, and the transmission beam is a beam corresponding to the uplink antenna panel used by the terminal device most recently; or the like, or, alternatively,

12. The method according to any of claims 7 to 11, wherein before the terminal device determines the transmission beam of the uplink channel, the method further comprises:

and the network equipment sends control information to the terminal equipment, wherein the control information is used for scheduling the uplink channel and does not comprise information used for indicating a sending beam of the uplink channel.

13. A data transmission apparatus, comprising:

a processing unit, configured to determine a transmission beam of an uplink channel;

a transceiver unit, configured to transmit the uplink channel using the transmission beam;

wherein the transmission beam is a transmission beam that has been used by the apparatus most recently or a transmission beam that will be used most recently; and/or the transmission beam is a beam corresponding to an antenna panel used by the device recently or a beam corresponding to an antenna panel to be used recently.

14. The apparatus according to claim 13, wherein the transmission beam is a transmission beam corresponding to a Physical Uplink Control Channel (PUCCH) resource that the apparatus has recently used or a PUCCH resource that will be recently used.

15. The apparatus of claim 14, wherein the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among the PUCCH resources if a PUCCH resource used recently by the apparatus or a PUCCH resource to be used recently comprises a plurality of PUCCH resources.

16. The apparatus of claim 13, wherein the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among the PUCCH resources if the transmission beam is a beam corresponding to a most recently used antenna panel or a beam corresponding to a most recently used antenna panel of the apparatus and there are a plurality of PUCCH resources configured with the most recently used antenna panel or the most recently used antenna panel.

17. The apparatus according to claim 13 or 16, wherein if the uplink antenna panel that has been recently used by the apparatus is in an active state, the transmission beam is a beam corresponding to the uplink antenna panel that has been recently used by the apparatus; or the like, or, alternatively,

if the uplink antenna panel used by the device recently is in an inactive state, the transmission beam is a beam corresponding to the downlink antenna panel used by the device recently.

18. A data transmission apparatus, comprising:

a transceiver unit, configured to receive the uplink channel using a receive beam corresponding to the transmit beam;

19. The apparatus of claim 18, wherein the transmission beam is a transmission beam corresponding to a Physical Uplink Control Channel (PUCCH) resource that has been recently used by the terminal device or a PUCCH resource that will be recently used.

20. The apparatus of claim 19, wherein if the PUCCH resource used by the terminal device recently or the PUCCH resource to be used recently comprises multiple PUCCH resources, the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among the multiple PUCCH resources.

21. The apparatus of claim 18, wherein the transmission beam is a transmission beam corresponding to a PUCCH resource with a smallest ID among the PUCCH resources if the transmission beam is a beam corresponding to a most recently used antenna panel or a beam corresponding to a most recently used antenna panel of the terminal device and there are multiple PUCCH resources configured with the most recently used antenna panel or the most recently used antenna panel.

22. The apparatus according to claim 18 or 21, wherein if the uplink antenna panel that has been used by the terminal device recently is in an active state, the transmission beam is a beam corresponding to the uplink antenna panel that has been used by the terminal device recently; or the like, or, alternatively,

23. A data transmission apparatus comprising a processor and a memory, the processor and the memory being coupled, the processor being configured to perform the method of any of claims 1 to 12.

24. A computer-readable medium for storing a computer program, characterized in that the computer program comprises instructions for implementing the method according to any one of claims 1 to 12.