WO2020048309A1

WO2020048309A1 - Method and apparatus for sending and receiving control information

Info

Publication number: WO2020048309A1
Application number: PCT/CN2019/101369
Authority: WO
Inventors: 张兴炜; 杨帆
Original assignee: 华为技术有限公司
Priority date: 2018-09-07
Filing date: 2019-08-19
Publication date: 2020-03-12
Also published as: CN110891291A

Abstract

The present application provides a method and apparatus for sending and receiving control information, said method comprising: a first terminal device determining a first bandwidth part (BWP); the first terminal device sending control information to a second terminal device N times, at least one of the N times of control information comprising first instruction information, said first instruction information being used for activating the first BWP and N being a positive integer greater than or equal to 1. The technical solutions of the embodiments of the present application ensure that the second terminal device obtains handover information of the bandwidth part of the first terminal device, thereby preventing side link interruption and improving side link communication efficiency.

Description

Method and device for transmitting and receiving control information

This application claims priority from a Chinese patent application filed on September 07, 2018 with the Chinese Patent Office, application number 201811046333.2, and application name "Method and Device for Sending and Receiving Control Information", the entire contents of which are incorporated herein by reference. Applying.

Technical field

The present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting and receiving control information in the field of communications.

Background technique

On the side link of the new air interface (NR) of the fifth generation communication system (5G, 5G), that is, the device-to-device (D2D) communication link, the network device will be configured with multiple A bandwidth part (BWP) is sent to the sending terminal, and the sending terminal is triggered to dynamically switch the physical side link discovery channel (PSDCH) and the physical side link control channel (physical link discovery channel) between multiple BWPs through DCI. sidelink control channel (PSCCH). The BWP switching mechanism in the existing NR is that the physical downlink control channel (PDCCH) is on the old BWP, and the data channel is on the new BWP.

Therefore, after the transmitting terminal switches the bandwidth part, the edge link between the transmitting terminal and the receiving terminal may be interrupted.

Summary of the Invention

The present application provides a method and device for transmitting control information, avoiding interruption of a side link between a sending terminal and a receiving terminal, and improving communication efficiency of the side link.

In a first aspect, a method for sending control information is provided, including:

The first terminal device determines a first bandwidth part BWP;

The first terminal device sends control information to the second terminal device N times, and at least one of the N times of control information includes first instruction information, wherein the first instruction information is used to activate the first bandwidth part. BWP, where N is a positive integer greater than or equal to 1.

In the embodiment of the present application, the second terminal device may determine the BWP of the bandwidth switched by the first terminal device according to the first instruction information included in the control information sent by the first terminal device to avoid the first terminal device and the second terminal device. The edge link between them is interrupted to improve the communication efficiency of the edge link.

It should be understood that, in the embodiment of the present application, the first BWP may be a new BWP switched by the first terminal device. Before the first terminal device switches communication resources, the first terminal device and the second terminal device may pass the second BWP. For communication. The first terminal device may be a transmitting terminal device, and the second terminal device may be a receiving terminal device.

With reference to the first aspect, in some implementations of the first aspect, at least one of the N times of control information further includes second indication information, and the second indication information is used to deactivate a second BWP.

For example, when the first terminal device and the second terminal device support a BWP connection, the control information sent by the first terminal device to the second terminal device may include the first instruction information for activating the second BWP, or may include Deactivate the second instruction information of the second BWP.

It should be understood that when the first terminal device and the second terminal device support one BWP connection, the first BWP and the second BWP cannot be in an active state at the same time. That is, the first BWP is in an activated state, and the second BWP is in a deactivated state; or the second BWP is in a deactivated state, and the first BWP is in an activated state.

It should be noted that, in the embodiments of the present application, the control information may also be used for scheduling data information, that is, the first terminal device sends control information to the second terminal device, and the control information may also be used to instruct the first terminal device to send data. Information resources. After the second terminal device obtains the resources to receive data information, the second terminal device can receive the data information sent by the first terminal device at the corresponding resource location, to avoid the second terminal when the first terminal device switches the BWP. The device cannot obtain data information.

With reference to the first aspect, in some implementations of the first aspect, the sending, by the first terminal device, N times of control information to the second terminal device includes:

Sending, by the first terminal device, control information K times on a second BWP, and sending control information N-K times on the first BWP;

At least one of the N times of control information includes first indication information, including:

At least one of the K times of control information includes the first indication information, and K is a positive integer less than or equal to N.

It should be understood that when the first terminal device switches from the second BWP to the first BWP, the control information needs to be sent to the second terminal device at least once on the second BWP, so that the second terminal device receives the control information on the first BWP. Receive the information sent by the first terminal device to avoid the interruption of the side link between the first terminal device and the second terminal device.

The first terminal device sends the N control information to a second terminal device on a third BWP, where the third BWP is at least two activated between the first terminal device and the second terminal device. One of the BWP.

It should be understood that when the first terminal device and the second terminal device support multiple activated BWPs, for example, the first terminal device and the second terminal device support connection of two or more bandwidth parts or carriers The first terminal device may send the N times of control information to the second terminal device through a BWP or a carrier in an activated state.

With reference to the first aspect, in some implementations of the first aspect, the control information further includes resource information of a first data packet, and the method further includes:

The first terminal device sends the first data packet X times to the second terminal device, where X is a positive integer.

It should be noted that, in the embodiments of the present application, the control information may also be used for scheduling data information, that is, the first terminal device sends control information to the second terminal device, and the control information may further include information resources of the first data packet.

It should be understood that the first terminal device may send control information to the second terminal device, and may also send a data packet to the second terminal device. If the data packet and the control information are frequency division multiplexed, the control information and the data packet can be transmitted on the same time slot. If data packets and control information are time-division multiplexed, control information and data packets can be sent on different time slots.

With reference to the first aspect, in some implementations of the first aspect, the sending, by the first terminal device, the first data packet X times to the second terminal device includes:

The first terminal device sends a first data packet Y times on the second BWP, and sends a first data packet X-Y times on the first BWP, where Y is a positive integer less than or equal to X.

With reference to the first aspect, in some implementations of the first aspect, the K is determined according to a first time M, and the first time M is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the first aspect, in some implementations of the first aspect, the Y is determined according to a second time L, and the second time L is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device sends the control information to the second terminal device at least once, and the control information includes a value of K.

With reference to the first aspect, in some implementation manners of the first aspect, the first terminal device sends the control information at least once to the second terminal device K times the control information includes a value of the first time M. The first time M is the shortest time for the second BWP to switch to the first BWP.

With reference to the first aspect, in some implementations of the first aspect, the K is determined according to the first time M.

For example, before the first time M, the first terminal device sends control information K times on the second BWP; after the first time M, the first terminal device sends control information NK times on the first BWP, where the K At least one of the secondary control information includes the first indication information, and K is a positive integer less than or equal to N.

With reference to the first aspect, in some implementation manners of the first aspect, the first terminal device sends the control information to the second terminal device at least once, and the control information includes a value of Y.

With reference to the first aspect, in some implementations of the first aspect, at least one time that the first terminal device sends the control information to the second terminal device K times the control information includes a value of the second time L. The second time L is the shortest time for the data on the second BWP to switch to the first BWP.

With reference to the first aspect, in some implementations of the first aspect, the Y is determined according to the second time L.

With reference to the first aspect, in some implementations of the first aspect, the second time L may be the same as the first time M.

It should be understood that the first time M may be a delay value of control information, the second time L may be a delay value of data information, and the first time M and the second time L may be the same or different.

In one example, before the first time M, the first terminal device sends data information Y times on the second BWP; after the first time M, the first terminal device sends data information X-Y times on the first BWP. The first time M may be a processing delay value of the first terminal device or may be a timing value configured by the network device to the first terminal device.

With reference to the first aspect, in some implementations of the first aspect, the K times of control information includes resource information of the Y first packet; the K times of control information or the NK times of control information includes all The resource information of the first data packet of XY times is described.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device receives third instruction information sent by a network device, and the third instruction information is used to instruct the first terminal device to switch to a third One bandwidth part.

For example, it may be that the network device sends DCI to the first terminal device or the network device sends the first message to the first terminal device, and the DCI or the first message includes instruction information that instructs the first terminal device to switch to the first BWP.

With reference to the first aspect, in some implementations of the first aspect, the method further includes:

Receiving, by the first terminal device, configuration information sent by the network device, where the configuration information includes information about at least one bandwidth portion configured by the network device to the first terminal device;

Sending, by the first terminal device, the configuration information to the second terminal device.

It should be understood that, in the embodiment of the present application, the network device may send configuration information of multiple BWPs configured to the first terminal device, and the first terminal device may forward the configuration information to the second terminal device after receiving the configuration information.

With reference to the first aspect, in some implementations of the first aspect, the first indication information is an identifier of the first bandwidth portion.

It should be understood that the control information includes first indication information, and the first indication information is that the identifier of the first bandwidth part is a display indication mode.

With reference to the first aspect, in some implementations of the first aspect, the control information is carried in signaling at a physical layer, signaling at a MAC layer for media access control, or signaling at an RRC layer for radio resource control.

In a second aspect, a method for sending control information includes:

The first terminal device determines a first bandwidth part BWP;

The first terminal device sends control information to the second terminal device N times, at least one of the N times of control information is sent on the first resource, and N is a positive integer greater than or equal to 1, The first resource is determined according to the first BWP.

In the embodiment of the present application, the first terminal device may instruct the second terminal device to activate the first bandwidth part in an implicit manner, that is, the first terminal device may send an instruction on the first resource by using the control information at least once among the N control information.

With reference to the second aspect, in some implementations of the second aspect, at least one of the N control information is sent on the first resource and is also used to deactivate a second BWP, the first resource Is one of a first subchannel on a second BWP, a first resource pool on a second BWP, or a first dedicated resource on a second BWP, the method includes:

The first terminal device sends control information to the second terminal device N times, and at least one of the N times of control information is on the first subchannel, or the first resource pool, or the first The first subchannel, or the first resource pool, or the first dedicated resource sent on a dedicated resource is determined according to the first BWP.

For example, the control information is associated with a specific subchannel on the second BWP. If the first terminal device sends the last control information on the specific subchannel reserved on the second BWP, it indicates that it will switch to the new BWP next time.

That is, if the first terminal device has multiple configured BWPs, multiple subchannels are required. For example, there are 4 BWP configurations, that is, in addition to the currently activated BWP, there are 3 switchable BWP, and 3 subchannels need to be reserved.

For example, the control information is associated with a dedicated resource or resource pool on the second BWP. The last control information is sent on the resource pool on the second BWP. If the second terminal device detects the control information on the resource pool, it will switch to the new BWP. .

That is, if the first terminal device has multiple configured BWPs, multiple dedicated resources are required. For example, there are 4 BWP configurations, that is, in addition to the currently activated BWP, there are 3 switchable BWP, and 3 dedicated resources need to be reserved.

With reference to the second aspect, in some implementations of the second aspect, the first terminal device sending control information to the second terminal device N times on the second BWP includes:

Sending, by the first terminal device, control information K times on the second BWP, and sending control information N-K times on the first BWP;

The control information sent at least once in the N times of control information on the first subchannel, or the first resource pool, or the first dedicated resource includes:

At least one of the K times of control information is sent on the first subchannel, or the first resource pool, or the first dedicated resource.

With reference to the second aspect, in some implementations of the second aspect, the first resource is a second subchannel on a third BWP, a second resource pool on a third BWP, or a second dedicated resource on a third BWP One of the resources, the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device, and the method includes:

The first terminal device sends control information to the second terminal device N times on the third BWP, and at least one of the N times of control information is on the second subchannel, or the second The resource pool, or the second dedicated channel sent on the second dedicated resource, or the second resource pool, or the second dedicated resource is determined according to the first BWP.

With reference to the second aspect, in some implementations of the second aspect, the control information further includes resource information of the first data packet, and the method further includes:

With reference to the second aspect, in some implementations of the second aspect, the first terminal device sending the first data packet to the second terminal device X times includes:

With reference to the second aspect, in some implementations of the second aspect, the K is determined according to a first time M, and the first time M is a processing delay value of the first terminal device or the A timing value configured by the network device to the first terminal device.

With reference to the second aspect, in some implementations of the second aspect, the Y is determined according to a second time L, and the second time L is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the second aspect, in some implementations of the second aspect, the K times of control information includes resource information of the Y first packet; the K times of control information or the NK times of control information includes all The resource information of the first data packet of XY times is described.

In a third aspect, a method for receiving control information is provided, including:

The second terminal device receives N times of control information sent by the first terminal device, where at least one of the N times of control information includes first indication information, and the first indication information is used to activate the first bandwidth Partial BWP, where N is a positive integer greater than or equal to 1;

The second terminal device activates the first BWP according to the first instruction information.

With reference to the third aspect, in some implementations of the third aspect, at least one of the N times of control information further includes second indication information, and the second indication information is used to deactivate the second BWP.

With reference to the third aspect, in some implementation manners of the third aspect, the control information is further used to indicate a resource for sending data information by the first terminal device.

With reference to the third aspect, in some implementations of the third aspect, the receiving, by the second terminal device, control information sent N times by the first terminal device includes:

The second terminal device receives K times of control information on a second BWP and NK times of control information on the first BWP, wherein at least one of the K times of control information includes the first indication information, K Is a positive integer less than or equal to N.

With reference to the third aspect, in some implementation manners of the third aspect, at least one time that the second terminal device receives the K control information sent by the first terminal device includes the value of K.

With reference to the third aspect, in some implementation manners of the third aspect, at least one time that the second terminal device receives the control information sent K times by the first terminal device includes the value of the first time M. The first time M is the shortest time for the second BWP to switch to the first BWP.

With reference to the third aspect, in some implementations of the third aspect, the K is determined according to a first time M, and the first time M is a processing delay value of the first terminal device or the A timing value configured by the network device to the first terminal device.

The second terminal device receives the N times of control information in a third BWP, where the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device.

With reference to the third aspect, in some implementation manners of the third aspect, the method further includes:

The second terminal device receives X times of data information sent by the first terminal device, where X is a positive integer.

With reference to the second aspect, in some implementations of the second aspect, the receiving, by the second terminal device, X times of data information sent by the first terminal device includes:

The second terminal device receives data information Y times on the second BWP, and receives data information X-Y times on the first BWP, and Y is a positive integer less than or equal to X.

With reference to the third aspect, in some implementation manners of the third aspect, at least one time that the second terminal device receives the control information sent K times by the first terminal device includes the value of Y.

With reference to the third aspect, in some implementation manners of the third aspect, at least one time that the second terminal device receives the control information of the K times sent by the first terminal device includes the value of the second time L. The second time L is the shortest time for the data on the second BWP to switch to the first BWP.

With reference to the third aspect, in some implementations of the third aspect, the Y is determined according to a second time L, and the second time L is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the third aspect, in some implementations of the third aspect, the K times of control information includes resource information of the first data packet for the Y times; the K times of control information or the NK times of control information Including resource information of the first data packet XY times.

With reference to the third aspect, in some implementation manners of the third aspect, the first indication information is an identifier of the first bandwidth portion.

With reference to the third aspect, in some implementation manners of the third aspect, the control information is carried in signaling at a physical layer, or signaling at a MAC layer, or signaling at an RRC layer.

In a fourth aspect, a method for receiving control information is provided, including:

The second terminal device receives N times of control information sent by the first terminal device. At least one of the N times of control information is received on the first resource, and N is a positive integer greater than or equal to 1.

The second terminal device determines to activate a first bandwidth part BWP according to the first resource.

With reference to the fourth aspect, in some implementations of the fourth aspect, at least one of the N control information is sent on the first resource and is also used to deactivate a second BWP, the first resource Is one of a first subchannel on a second BWP, a first resource pool on a second BWP, or a first dedicated resource on a second BWP, the method includes:

Receiving, by the second terminal device, the N times of control information sent by the first terminal device, and at least one of the N times of control information is on the first subchannel or the first resource pool Or received on the first dedicated resource, determine the first BWP according to the first subchannel, or the first resource pool, or the first dedicated resource.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the receiving, by the second terminal device, N times of control information sent by the first terminal device includes:

Receiving, by the second terminal device, K times of control information sent by the first terminal device on the second BWP, and receiving N-K times of control information on the first BWP;

The control information received at least once in the N times of control information on the first subchannel, or the first resource pool, or the first dedicated resource includes:

The control information of at least one of the K times of control information is received on the first subchannel, or the first resource pool, or the first dedicated resource.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first resource is a second subchannel on a third BWP, a second resource pool on a third BWP, or a second dedicated resource on a third BWP One of the resources, the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device, and the method includes:

Receiving, by the second terminal device, N times of control information sent by the first terminal device on the third BWP, and at least one of the N times of control information is on the second subchannel, or The second resource pool, or received on the second dedicated resource, determines the first BWP according to the second subchannel, or the second resource pool, or the second dedicated resource.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the control information further includes resource information of the first data packet, and the method further includes:

With reference to the fourth aspect, in some implementations of the fourth aspect, the first terminal device sending the first data packet to the second terminal device X times includes:

With reference to the fourth aspect, in some implementations of the fourth aspect, the K is determined according to a first time M, and the first time M is a processing delay value of the first terminal device or the A timing value configured by the network device to the first terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the Y is determined according to a second time L, and the second time L is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the K times of control information includes resource information of the Y first packet; the K times of control information or the NK times of control information includes all The resource information of the first data packet of XY times is described.

In a fifth aspect, a method for sending instruction information is provided, including:

The network device configures at least one bandwidth portion of the first terminal device;

The network device sends first instruction information to the first terminal device and the second terminal device, where the first instruction information is used to activate a first bandwidth part BWP.

In the embodiment of the present application, the first terminal device and the second terminal device can obtain the first instruction information sent by the network device, thereby determining the switching bandwidth part of the first terminal device, thereby avoiding the The side link is interrupted, which improves the communication efficiency of the side link.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first indication information is carried in a MIB message; or the first indication information is carried in a SIB message; or the first indication information is carried in RRC signaling; or, the first indication information is carried in MAC signaling; or, the first indication information is carried in DCI signaling.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first indication information includes an identifier of the first terminal device, an identifier of the second terminal device, an identifier of a terminal device pair, and a terminal device At least one of group identifiers, wherein the terminal device pair and the terminal device group include the first terminal device and the second terminal device.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the method further includes:

The network device sends configuration information to the first terminal device and the second terminal device, and the configuration information includes information of at least one bandwidth portion configured by the network device to the first terminal device.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the configuration information includes an identifier of the first terminal device, an identifier of the second terminal device, an identifier of a terminal device pair, and a terminal device group At least one of the identifiers, wherein the terminal device pair and the terminal device group include the first terminal device and the second terminal device.

According to a sixth aspect, a method for receiving indication information is provided, including:

Receiving, by a second terminal device, first indication information sent by a network device, where the first indication information is used to activate a first bandwidth part BWP;

In the embodiment of the present application, the second terminal device may obtain the first instruction information sent by the network device, so as to determine the switching bandwidth portion of the first terminal device, thereby avoiding the interruption of the side link between the first terminal and the receiving terminal, Improve the communication efficiency of the side link.

With reference to the sixth aspect, in some implementations of the sixth aspect, the first indication information is carried in a MIB message; or the first indication information is carried in a SIB message; or the first indication information is carried in RRC signaling; or, the first indication information is carried in MAC signaling; or, the first indication information is carried in DCI signaling.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the first indication information includes at least one of an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group, where: The terminal device pair and the terminal device group include the second terminal device.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the method further includes:

The second terminal device receives configuration information sent by the network device, where the configuration information includes information on at least one bandwidth portion configured by the network device to the first terminal device.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the configuration information includes at least one of an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group, wherein the The terminal device pair and the terminal device group include the second terminal device.

According to a seventh aspect, a device for sending control information is provided, including:

A processing unit for determining a first bandwidth part BWP; a communication unit for sending N times of control information to a second terminal device, at least one of the N times of control information including first indication information, wherein the first The indication information is used to activate the first bandwidth part BWP, and the N is a positive integer greater than or equal to 1.

It should be understood that the apparatus for sending control information in the embodiments of the present application may be a first terminal device.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, at least one of the N times of control information further includes second instruction information, and the second instruction information is used to deactivate the second BWP.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the communication unit is specifically configured to:

Send K times of control information on the second BWP, and send NK times of control information on the first BWP, where at least one of the K times of control information includes the first indication information, and K is less than or equal to N Positive integer.

Sending the N control information to a second terminal device on a third BWP, where the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the communication unit is further configured to send data information X times to the second terminal device, where X is a positive integer.

With reference to the seventh aspect, in some implementations of the seventh aspect, the communication unit is specifically configured to send data information Y times on the second BWP, and send data information XY times on the first BWP, Y Is a positive integer less than or equal to X.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the K is determined according to a first time M, and the first time M is a processing delay value of the first terminal device or the A timing value configured by the network device to the first terminal device.

With reference to the seventh aspect, in some implementations of the seventh aspect, the Y is determined according to a second time L, and the second time L is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the seventh aspect, in some implementations of the seventh aspect, the K times of control information includes resource information of the Y first packet; the K times of control information or the NK times of control information includes all The resource information of the first data packet of XY times is described.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the first indication information is an identifier of the first bandwidth portion.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the control information is carried in signaling at a physical layer, or signaling at a MAC layer, or signaling at an RRC layer.

According to an eighth aspect, an apparatus for sending control information is provided, including:

A processing unit, configured to determine a first bandwidth part BWP;

A communication unit, configured to send control information to the second terminal device N times, at least one of the N times of control information is sent on the first resource, where N is a positive integer greater than or equal to 1, where , The first resource is determined according to the first BWP.

With reference to the eighth aspect, in some implementations of the eighth aspect, at least one of the N control information is sent on the first resource and is also used to deactivate a second BWP, the first resource The communication unit is one of a first subchannel on the second BWP, a first resource pool on the second BWP, or a first dedicated resource on the second BWP. The communication unit is specifically configured to:

Sending control information N times to the second terminal device, at least one of the N control information is sent on the first subchannel, or the first resource pool, or the first dedicated resource , The first subchannel, or the first resource pool, or the first dedicated resource is determined according to the first BWP.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the communication unit is specifically configured to:

Sending control information K times on the second BWP, and sending control information N-K times on the first BWP;

The control information of at least one of the K times of control information is sent on the first subchannel, or the first resource pool, or the first dedicated resource.

With reference to the eighth aspect, in some implementations of the eighth aspect, the first resource is a second subchannel on the third BWP, a second resource pool on the third BWP, or a second dedicated resource on the third BWP One of the resources, the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device, and the communication unit is specifically configured to:

Sending N times of control information to the second terminal device on the third BWP, at least one of the N times of control information is on the second subchannel, or the second resource pool, or the The second subchannel, or the second resource pool, or the second dedicated resource sent on a second dedicated resource is determined according to the first BWP.

In a ninth aspect, a device for receiving control information is provided, including:

A communication unit, configured to receive N times of control information sent by a first terminal device, where at least one of the N times of control information includes first indication information, wherein the first indication information is used to activate the first Bandwidth part BWP, where N is a positive integer greater than or equal to 1;

A processing unit, configured to activate the first BWP according to the first instruction information.

It should be understood that the apparatus for receiving control information in the embodiment of the present application may be a second terminal device.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, at least one of the N times of control information further includes second instruction information, and the second instruction information is used to deactivate the second BWP.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the communication unit is specifically configured to: receive control information K times on a second BWP, and receive control information N-K times on the first BWP;

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the communication unit is specifically configured to receive the N control information at a third BWP, where the third BWP is the first terminal device and all One of at least two BWPs that have been activated between the second terminal devices.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the control information further includes resource information of the first data packet, and the communication unit is further configured to: receive the X times sent by the first terminal device In the first data packet, X is a positive integer.

With reference to the ninth aspect, in some implementations of the ninth aspect, the communication unit is specifically configured to: receive the first data packet Y times on the second BWP, and receive XY times on the first BWP In the first data packet, Y is a positive integer less than or equal to X.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the K is determined according to a first time M, and the first time M is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the ninth aspect, in some implementations of the ninth aspect, the Y is determined according to a second time L, and the second time L is a processing delay value of the first terminal device or is the A timing value configured by the network device to the first terminal device.

With reference to the ninth aspect, in some implementations of the ninth aspect, the K times of control information includes resource information of the first data packet of the Y times; the K times of control information or the NK times of control information Including resource information of the first data packet XY times.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the first indication information is an identifier of the first bandwidth portion.

A tenth aspect provides a device for receiving control information, including:

A communication unit, configured to receive N times of control information sent by the first terminal device, at least one of the N times of control information is received on the first resource, and N is a positive integer greater than or equal to 1;

A processing unit, configured to determine to activate a first bandwidth part BWP according to the first resource.

With reference to the tenth aspect, in some implementations of the tenth aspect, at least one of the N control information is sent on the first resource and is also used to deactivate a second BWP, the first resource The communication unit is one of a first subchannel on the second BWP, a first resource pool on the second BWP, or a first dedicated resource on the second BWP. The communication unit is specifically configured to:

Receiving the N times of control information sent by the first terminal device, and at least one of the N times of control information is on the first subchannel, or the first resource pool, or the first Received on a dedicated resource, the first BWP is determined according to the first subchannel, or the first resource pool, or the first dedicated resource.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the communication unit is specifically configured to receive, on the second BWP, control information sent K times by the first terminal device, and in the first BWP, Receive NK times control information on BWP;

With reference to the tenth aspect, in some implementations of the tenth aspect, the first resource is a second subchannel on the third BWP, a second resource pool on the third BWP, or a second dedicated resource on the third BWP One of the resources, the third BWP is one of at least two BWPs activated between the first terminal device and the second terminal device, and the communication unit is specifically configured to: in the third BWP Receiving N times of control information sent by the first terminal device, at least one of the N times of control information is on the second subchannel, or the second resource pool, or the second dedicated The first BWP is received on the resource according to the second subchannel, or the second resource pool, or the second dedicated resource.

According to an eleventh aspect, a device for sending control information is provided, including:

A processing unit, configured to configure at least one bandwidth part BWP, where the at least one BWP includes a first BWP;

The communication unit is configured to send first instruction information to the first terminal device and the second terminal device, where the first instruction information is used to activate the first BWP.

It should be understood that the apparatus for sending control information in the embodiments of the present application may be a network device.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the first indication information is carried in a MIB message; or the first indication information is carried in a SIB message; or the first indication information Carried in RRC signaling; or, the first indication information is carried in MAC signaling; or the first indication information is carried in DCI signaling.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the first indication information further includes an identifier of the first terminal device, an identifier of the second terminal device, an identifier of a terminal device pair, And at least one of an identifier of a terminal device group, wherein the terminal device pair and the terminal device group include the first terminal device and the second terminal device.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the communication unit is further configured to: send configuration information to the first terminal device and the second terminal device, where the configuration information includes all The information of the at least one bandwidth portion configured by the apparatus to the first terminal device.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the configuration information includes an identifier of the first terminal device, an identifier of the second terminal device, an identifier of a terminal device pair, and a terminal device At least one of group identifiers, wherein the terminal device pair and the terminal device group include the first terminal device and the second terminal device.

According to a twelfth aspect, a device for receiving control information is provided, including:

A communication unit, configured to receive first instruction information sent by a network device, where the first instruction information is used to activate a first bandwidth part BWP;

It should be understood that the apparatus for receiving control information in the embodiment of the present application may be a first terminal device or a second terminal device.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the first indication information is carried in a MIB message; or the first indication information is carried in a SIB message; or the first indication information Carried in RRC signaling; or, the first indication information is carried in MAC signaling; or the first indication information is carried in DCI signaling.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the first indication information includes at least one of an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group, The terminal device pair and the terminal device group include the second terminal device.

With reference to the twelfth aspect, in some implementation manners of the twelfth aspect, the communication unit is further configured to:

Receiving configuration information sent by the network device, where the configuration information includes information about at least one bandwidth portion configured by the apparatus to the first terminal device.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the configuration information further includes at least one of an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group, where , The terminal device pair and the terminal device group include the second terminal device.

According to a thirteenth aspect, a device for transmitting control information is provided. The device includes a memory, a processor, a transceiver, and a computer program stored in the memory and executable on the processor. The processor is characterized in that the processor When the computer program is executed, the foregoing first aspect or the method in any possible implementation manner of the first aspect is executed.

According to a fourteenth aspect, a device for transmitting control information is provided. The device includes a memory, a processor, a transceiver, and a computer program stored in the memory and executable on the processor. The processor is characterized in that the processor When the computer program is executed, the foregoing second aspect or the method in any possible implementation manner of the second aspect is executed.

According to a fifteenth aspect, a device for receiving control information is provided. The device includes a memory, a processor, a transceiver, and a computer program stored in the memory and executable on the processor. The processor is characterized in that the processor When the computer program is executed, the third aspect described above or the method in any possible implementation manner of the third aspect is performed.

According to a sixteenth aspect, a device for receiving control information is provided. The device includes a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor. The processor is characterized in that the processor When the computer program is executed, the foregoing fourth aspect or the method in any possible implementation manner of the fourth aspect is executed.

According to a seventeenth aspect, a device for transmitting control information is provided. The device includes a memory, a processor, a transceiver, and a computer program stored in the memory and executable on the processor. The processor is characterized in that the processor When the computer program is executed, the foregoing fifth aspect or the transmission method in any possible implementation manner of the fifth aspect is executed.

According to an eighteenth aspect, a device for receiving control information is provided. The device includes: a memory, a processor, a transceiver, and a computer program stored in the memory and executable on the processor. The processor is characterized in that the processor When the computer program is executed, the foregoing sixth aspect or the method in any possible implementation manner of the sixth aspect is executed.

In a nineteenth aspect, the present application provides a computer-readable medium for storing a computer program, the computer program including instructions for performing the first aspect or the method in any possible implementation manner of the first aspect.

In a twentieth aspect, the present application provides a computer-readable medium for storing a computer program, the computer program including instructions for performing the second aspect or a method in any possible implementation manner of the second aspect.

In a twenty-first aspect, the present application provides a computer-readable medium for storing a computer program, the computer program including instructions for performing the third aspect or the method in any possible implementation manner of the third aspect.

In a twenty-second aspect, the present application provides a computer-readable medium for storing a computer program, the computer program including instructions for performing the fourth aspect or the method in any possible implementation manner of the fourth aspect.

In a twenty-third aspect, the present application provides a computer-readable medium for storing a computer program, the computer program including instructions for performing the fifth aspect or the method in any possible implementation manner of the fifth aspect.

In a twenty-fourth aspect, the present application provides a computer-readable medium for storing a computer program, the computer program including instructions for performing the sixth aspect or the method in any possible implementation manner of the sixth aspect.

In a twenty-fifth aspect, the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to execute the above-mentioned first aspect or the method in any possible implementation manner of the first aspect.

In a twenty-sixth aspect, the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to perform the method in the second aspect or any possible implementation manner of the second aspect.

In a twenty-seventh aspect, the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to execute the third aspect or the method in any possible implementation manner of the third aspect.

In a twenty-eighth aspect, the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to perform the fourth aspect or the method in any possible implementation manner of the fourth aspect.

In a twenty-ninth aspect, the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to execute the method in the fifth aspect or any possible implementation manner of the fifth aspect.

In a thirtieth aspect, the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to execute the method of the sixth aspect or any possible implementation manner of the sixth aspect.

In a thirty-first aspect, the present application provides a communication chip in which instructions are stored, which when executed on a network device or a terminal device, causes the network device or the terminal device to execute the methods described in the above aspects.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

FIG. 2 is a schematic diagram of an application scenario according to communication between devices.

FIG. 3 is a schematic diagram of D2D technology according to inter-device communication.

FIG. 4 is a schematic diagram of an application scenario according to V2X technology.

FIG. 5 is a schematic diagram of assigning SAs and data to have respective resource pools according to scheduling.

FIG. 6 is a schematic diagram of assigning an SA and a data sharing resource pool according to a schedule.

FIG. 7 is an interaction diagram of a method for sending control information according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of an apparatus for sending control information according to an embodiment of the present application.

FIG. 9 is a schematic block diagram of an apparatus for receiving control information according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of an apparatus for sending control information according to an embodiment of the present application.

FIG. 11 is a schematic block diagram of a device according to an embodiment of the present application.

detailed description

The technical solutions in this application will be described below with reference to the drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a global mobile communication (GSM) system, a code division multiple access (CDMA) system, and a broadband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS), Global Interoperability for Microwave Access (WiMAX) communication system, 5th generation in the future, 5G) system or new radio (NR).

The terminal device in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or User device. Terminal equipment can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and wireless communications Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or public land mobile network (PLMN) in future evolution Terminal equipment and the like are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a Global System for Mobile Communication (GSM) system or a Code Division Multiple Access (CDMA) system. The base station (Base Transceiver Station (BTS)) can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evolved) in an LTE system. (NodeB, eNB or eNodeB), can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, access point, in-vehicle device, wearable device, and future The network equipment in the 5G network or the network equipment in the future evolved PLMN network is not limited in the embodiments of the present application.

In the embodiment of the present 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. This hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. This application layer contains applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be run to provide according to the embodiment of the application The communication may be performed by using the method described above. For example, the method execution subject provided in the embodiments of the present application may be a terminal device or a network device, or a function module in the terminal device or the network device that can call a program and execute the program.

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 in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media used to store information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction (s) and / or data.

In order to facilitate understanding, the related terms involved in this article are introduced below.

1. Bandwidth part (BWP)

The 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) standards organization is currently developing a protocol standard for the 5th generation cellular mobile communication system (5th Generation, 5G), also known as New Radio (NR). Compared with the long term evolution (LTE) system, the NR system has a feature that different bandwidths can be configured on the network side and the terminal side. Terminal equipment can configure its own maximum operating bandwidth according to its own business needs and manufacturing costs. For example, the operating bandwidth of low-cost and low-speed terminal equipment may only be 5MHz, while the operating bandwidth of high-speed and high-performance terminal equipment may reach 100MHz. If a carrier bandwidth of a cell is set according to the working bandwidth of a low-cost terminal device (for example, set to 5MHz to 10MHz), a high-performance terminal device can obtain a higher rate by using carrier aggregation. It is bound to increase the control signaling overhead and processing complexity; if the carrier bandwidth of a cell is set according to the working bandwidth of high-speed high-performance terminal equipment (for example, 100MHz), low-cost terminal equipment must be equipped with radio frequency and baseband suitable for large bandwidth Only devices can access the cell, which undoubtedly increases costs. Therefore, NR introduced the concept of BWP.

BWP is part of the bandwidth within the carrier bandwidth. A BWP can be a continuous frequency resource on a carrier. The network can configure multiple BWPs for a terminal, and the bandwidth of multiple BWPs can be different. The network can also configure different terminal devices with different bandwidth BWPs. The network will send an activation command to activate one of the multiple configured BWPs. When a BWP is configured and activated, this BWP is called an active BWP (active BWP). The activated BWP includes the activated DL BWP and the activated UL BWP. The data and control information sent by the terminal device within the activated UL BWP, and the data and control information received within the activated DL BWP. In a possible implementation manner, one terminal device supports only one activated BWP, and the terminal device performs data transmission on only one BWP at any time. The BWP allocated by the terminal device during initial access is called the initial BWP (initial BWP). The identifier of the initial BWP. For example, the value is 0.

The bandwidth of a carrier of a base station in NR is wider than that of an LTE carrier. For example, the carrier bandwidth of an NR can be 100M, and different terminals have different radio frequency capabilities and can support different maximum bandwidths. Therefore, a bandwidth part (bandwidth part, BWP) concept. BWP is a set of continuous RB resources on the carrier. Different BWPs can occupy frequency domain resources that partially overlap but have different bandwidths, or they can be bandwidth resources with different numerology, and they can not overlap each other in the frequency domain. A service cell in NRRel-15 can be configured with a maximum of 4 BWPs, for example, frequency division duplex (FDD) uplink and downlink 4 BWP each, time division duplex (TDD) downlink and uplink 4 BWP pairs. Each serving cell can only activate one BWP at a time, and the terminal sends and receives data on the activated BWP.

Although a serving cell can be configured with a maximum of 4 BWPs, each BWP can be configured with a different numerolgy. However, since each serving cell can only activate one BWP at the same time, and the PDCCH can only be transmitted on the activated BWP.

2. Blind inspection

DCIs that schedule different data transmissions can be scrambled with different wireless network temporary identifiers (RNTI). For example, the RNTI may include a cell identifier (cell-RNTI, C-RNTI), and an access identifier (random access- RNTI, RA-RNTI), paging identification (Paging-RNTI, P-RNTI), etc. Among them, C-RNTI can be used to scramble DCI of scheduling user data, and RA-RNTI can be used to send scheduling network equipment to The random access response message of the terminal device is scrambled, and the P-RNTI can be used to scramble the paging message.

Taking C-RNTI as an example, the physical downlink control channel (PDCCH) of different users can be distinguished by its corresponding C-RNTI. That is, the cyclic redundancy check (CRC) of DCI is determined by C. -RNTI masking. The terminal device cannot obtain the format of the DCI currently being sent, and cannot obtain on which candidate PDCCH the DCI is sent. However, the terminal device can determine the type of information that needs to be received. For different types of information that need to be received, the terminal device uses the corresponding RNTI and the information on the configured candidate PDCCH to perform a CRC check. If the CRC check is successful, the terminal device determines that the DCI information needs to be received, thereby determining a corresponding DCI format, and further parses out the content of the DCI.

In a possible implementation manner, the calculation rule of the number of blind inspection times is as follows:

(1) When the DCI lengths on the candidate PDCCHs are different, the number of blind detections is calculated separately;

(2) DCIs on candidate PDCCHs composed of different control channel elements (CCEs) are calculated separately;

(3) Candidate PDCCHs are DCIs from different control resource sets (control resource sets, CORESET), and the number of blind detections is calculated separately; where CORESET represents the time-frequency resource set used to carry control information.

(4) When the DCI lengths on candidate PDCCHs in the same CORESET and the same CCE set are the same, a blind detection is counted.

3.DCI format

For data transmission, NR currently supports multiple formats of DCI: DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1, DCI format 2_0, DCI format 2_1, DCI format 2_2, DCI format 2_3, and so on.

According to the uplink and downlink, the DCIs of the first four formats mentioned above can be divided into two categories: DCI for scheduling physical uplink shared channels (PUSCH) and DCI for scheduling physical downlink shared channels (PDSCH) ) DCI, where DCI format 0_0 and DCI format 0_1 are DCI for scheduling PUSCH, DCI format 1_0 and DCI format 1_1 are DCI for scheduling PDSCH.

According to specific functions, the above-mentioned four types of DCI can also be divided into two types: fallback DCI (fallback DCI) and non-fallback DCI (non-fallback DCI). Among them, DCI format 0_0 and DCI format 1_0 are fallbacks. DCI, DCI format 0_1 and DCI format 1_1 are non-rollback DCI. It should be understood that the content of the fields and the corresponding number of DCI bits included in the DCI in different formats are different.

4. 5G NR (new rat, NR)

The 3rd Generation Partnership Project (3GPP) advanced long-term evolution (advanced-advanced (LTE-A)) Rel-10 / 11/12/13/14/15 is a long-term evolution (long evolution LTE) Rel-8 / 9 version enhancements. The LTE-A system has higher bandwidth requirements than the LTE system and supports peak data rates of up to 500M / s in the downlink and 1G / s.

5G is the fifth generation of mobile communications. 5G needs to have higher performance than 4G. 5G NRRel-15 defines a new air interface access technology to support a user experience rate of 0.1 to 1 Gbps, a density of one million connections per square kilometer, end-to-end delay in the millisecond range, and dozens of Tbps per square kilometer. Traffic density, mobility above 500Km per hour and peak rate of tens of Gbps. Among them, user experience rate, connection density and delay are the three most basic performance indicators of 5G. At the same time, 5G also needs to significantly improve the efficiency of network deployment and operation. Compared with 4G, the spectrum efficiency is increased by 5 to 15 times, and the energy efficiency and cost efficiency are increased by more than 100 times.

The three major application scenarios and requirements of 5G include:

Enhanced mobile bandwidth (eMBB);

Massive machine-type-communications (mMTC);

Ultra-reliable and low-latency communications (URLLC).

URLLC application scenarios include unmanned driving, industrial control, etc., which require low latency and high reliability. The specific requirements for low latency are end-to-end 0.5ms delay and air interface information interaction 1ms delay. The specific requirements for high reliability are The block error rate BLER reaches 10 ^ (-5), that is, the proportion of correctly received data packets reaches 99.999%.

In 5G NR, multiple subcarrier intervals are introduced, and different carriers can have different subcarrier intervals. The baseline is 15kHz, which can be 15kHz * 2n, where n is an integer from 3.75, 7.5 to 480kHz, with a maximum of 8 types. Correspondingly, there are various symbol lengths and slot lengths, as shown in Table 1 below:

Table 1

In the time domain, in 5G NR, a time slot can be composed of at least one of downlink transmission, guard interval GP, and uplink transmission; the composition of such time slots is called different slot format SFI (Slot Format Indicator) There may be 256 kinds.

In the frequency domain, since the 5G NR single-carrier bandwidth can reach 400MHz, a bandwidth part (BWP) is defined in a carrier. The base station can configure multiple DL / UL BWPs for the UE through high-level signaling RRC. Physical layer signaling DCI activates one of the DL / UL BWPs for the UE (one for each uplink and downlink), so the UE has multiple configured DL / UL BWPs in one carrier but only one activates DL / UL BWP. When BWP is activated, During handover, the base station switches the active BWP from BWP1 to BWP2 through DCI. The latest meeting concluded that the downlink scheduling signaling DCI can only switch downlink to activate BWP. After receiving the PDCCH, the UE switches to the new BWP to receive PDSCH; the uplink scheduling signaling can only switch uplink to activate BWP. After receiving the PDCCH, the UE Switch to new BWP to send PUSCH.

5. Device-to-device communication (device to device, D2D)

In order to improve the spectrum utilization and maximize the use of the radio frequency capabilities of existing terminals, the D2D communication link (side link, SL) considers multiplexing the spectrum resources of the existing mobile communication network. In order not to interfere with the terminals of the existing network, D2D communication does not use LTE-A downlink (DL), that is, the link spectrum resources of the eNB to the UE, but only reuses the uplink (UL) of the LTE-A system, that is, the UE. Link spectrum resources to the eNB. Because the anti-interference ability of the base station is much better than the ordinary UE. D2D equipment is more likely to be time-division multiplexed in this uplink spectrum resource, so it does not need to support simultaneous transmission and reception, and only needs to send or receive at a time.

In the Rel-12 / 13 version, D2D scenes can be divided into three types of devices: network coverage, partial network coverage, and no network coverage. D2D devices are in the coverage area of the base station in the scenario with network coverage, some D2D devices are in the coverage area of the base station in some network coverage scenarios, and some D2D devices are not in the coverage area of the base station. None are in the coverage area of the base station. If the UE can hear the signal from the base station, it is the UE within the network coverage. If the UE can hear the signal of the UE within the network coverage, the UE is part of the network coverage. If the first two signals are not received by the UE, the UE is out of network coverage. As shown in FIG. 2, UE1 belongs to the UE within the network coverage, UE2 belongs to the UE with partial network coverage, and UE3, UE4, and UE5 belong to the UEs outside the network coverage.

D2D communication is divided into D2D device discovery and D2D device communication. D2D device discovery only sends discovery signals (on PSDCH), and D2D device communication sends scheduling assignments (that is, SA, which has different SCI formats and is carried on PSCCH) and data. (Bearing on PSSCH). Compared with uplink (UL) and downlink (DL) in LTE, the D2D communication link is called a sidelink (SL).

From the perspective of the sending user (sending device), there are now two modes of resource allocation for D2D device communication.

Mode 1: It is a centralized control method. D2D resources are allocated by a central control device such as a base station or a relay station. Resources are allocated to the sending UE by scheduling. The centralized control resource allocation is mainly for network coverage. Scenes.

Mode 2: It is a distributed resource multiplexing method based on competition. The sending UE obtains the transmission resources from the resource pool in a competitive manner. In the scenario with network coverage, the resource pool is an entire block of resources divided by the base station. All D2D users compete for small blocks of resources in this entire block of resources. In the scenario without network coverage, the resource pool is a D2D user can obtain a predefined system bandwidth, and all D2D users compete for resources under the predefined resources.

Similar to device communication, there are two types of resource allocation for device discovery.

Type 1: A contention-based distributed resource multiplexing method, in which the sending UE obtains the sending resources from the resource pool in a competitive manner. In the scenario with network coverage, the resource pool is an entire block of resources divided by the base station. All D2D users compete for small blocks of resources in this entire block of resources. In the scenario without network coverage, the resource pool is a D2D user can obtain a predefined system bandwidth, and all D2D users compete for resources under the predefined resources.

Type 2 (Type 2): It is a centralized control method. D2D resources are allocated by a central control device such as a base station or a relay station. Resources are allocated to the sending UE by scheduling. Centralized control resource allocation is mainly for network coverage. Scenes.

It should be understood that for the competition-based resource allocation mode of Mode2 and Type1, because there is no central controller coordination, different UEs may compete for the same resources, so conflicts occur; when there are a large number of UEs, the probability of this conflict situation is very high high.

For example, for D2D device communication, the sending device first sends a scheduling assignment (SA), (repeatedly sent 2 times), such as the side link control information SCI, which carries the resource information of the data packet, and then sends the data packet (repeated transmission 4 times), Figure 3 shows a schematic diagram of Mode1, Mode2 is similar, but there is no base station, and the resources are randomly selected by the Tx UE (the sending UE); the receiving device first blindly checks the SA. If at least one of the IDs matches, the data packet is received according to the resource information of the data packet carried therein.

At present, SA has only one format, SCI format 0, and the fields included in SCI format 0 are shown in Table 2 below.

Table 2

字段(fields)Fields	比特数Number of bits	描述(descriptions)Descriptions
频率跳频Frequency hopping	11	是否使用跳频，跳频在规范中是固定的Whether to use frequency hopping, which is fixed in the specification
资源块分配Resource block allocation	5-135-13	UL 0类型的资源分配可以重用UL 0 resource allocation can be reused
时域资源图样Time domain resource pattern	77	位图(bitmap)Bitmap
调制编码方案Modulation and coding scheme	55	64QAM除外Except 64QAM
定时提前Timing ahead	1111	数据接收定时调整Data receiving timing adjustment
身份、标识符Identity, identifier	88	目的地标识Destination identification
总数total	37-4537-45	Zh

V2X (vehicle-to-everything)

In Rel-14 / 15/16 version, V2X was successfully established as a major application of D2D technology. V2X will optimize the specific application requirements of V2X based on the existing D2D technology. It is necessary to further reduce the access delay of V2X equipment and solve the problem of resource conflicts.

V2X specifically includes three application requirements of V2V (Internet of Vehicles), V2P (Automotive and Pedestrian Communication), and V2I / N (Automotive and Infrastructure Communication / Network, Base Station Communication), as shown in Figure 4. V2V refers to LTE-based vehicle-to-vehicle communication; V2P refers to LTE-based vehicles and people (including pedestrians, cyclists, drivers, or passengers); V2I refers to LTE-based vehicles and roadside devices (RSU) communication, and another type of V2N can be included in V2I. V2N refers to the communication between a LTE-based vehicle and a base station / network, as shown in FIG. 4.

A roadside unit (RSU) can include two types: a terminal-type RSU, which is placed on the roadside, the terminal-type RSU is in a non-mobile state and does not need to consider mobility; a base station-type RSU can communicate with it The vehicle provides timing synchronization and resource scheduling.

For V2X communication, in order to ensure the delay requirement, the sender may send SA and data at the same time in a sub-frame (repeatedly sent 2 times), for example, the side link control information SCI and data packet, as shown in Figure 5; the receiver First blindly detect the SA, and buffer the data in the same subframe at the same time, because the data scheduled by the SA may be in the same subframe. If the SA is received correctly and the ID in the SA matches the receiver, the correlation of the data carried in it The information determines whether to demodulate / decode the buffered data (same subframe) or receive subsequent data (different subframes).

In order to reduce the peak-to-average power ratio (PAPR), for a UE, the SA and data resources are preferably continuous. So another method is the SA and data sharing resource pool. The SA can be placed continuously with the data, as shown in Figure 6. Compared with FIG. 5, although the method of the prior art 1 reduces PAPR, it introduces a new problem: SA may appear at any position, which will reduce the probability of SA detection at the receiving end, increase the number of blind detections, and increase the receiver ’s The demodulation / decoding workload increases the power consumption of the receiver and increases the complexity of the receiver.

7.Sub-channel

A sub-channel includes several resource blocks (RBs) that are continuous in the frequency domain. The size of the sub-channel can be configured by a network device or pre-configured in advance. Any sub-channel can be used for V2X data transmission. In a sub-channel, starting from the lowest RB sequence number (lowest index of the RB), a total of two consecutive RBs are PSCCH channels for transmitting V2X control information, and the remaining consecutive RBs are PSSCH channels for Transmission of data information (data). In the time domain, one subframe or slot is taken as a basic unit. Further, SA and Data in LTE V2X adopt a form of frequency division multiplexing (FDM) in the frequency domain, and together occupy the entire subframe in the time domain. It should be understood that multiple BCHs may be included on one BWP.

From the perspective of the entire V2X system, the transmission resources of the entire V2X are divided into several sub-channels. For the sender and receiver, the control information and data resources sent and received are relatively fixed. The receiving end receives the SA at a specific position, and then further decodes the data according to the control information carried in the SA.

First, in order to facilitate understanding, the following briefly describes the application environment of the embodiment of the present application with reference to FIG. 1. FIG. 1 is a schematic diagram of a communication system used in an embodiment of the present application. As shown in FIG. 1, the communication system 100 includes a network device 102, and the network device 102 may include multiple antenna groups. Each antenna group may include one or more antennas, for example, one antenna group may include

antennas

104 and 106, another antenna group may include antennas 108 and 110, and additional groups may include

antennas

112 and 114. 2 antennas are shown in FIG. 1 for each antenna group, however, more or fewer antennas may be used for each group. The network device 102 may additionally include a transmitter chain and a receiver chain. Those of ordinary skill in the art may understand that each of them may include multiple components related to signal transmission and reception, such as a processor, a modulator, a multiplexer, and a decoder. Tuner, demultiplexer, or antenna.

The network device 102 may communicate with multiple terminal devices, for example, the network device 102 may communicate with the terminal device 116 and the terminal device 122. However, it is understood that the network device 102 may communicate with any number of terminal devices similar to the terminal devices 116 or 122. The terminal devices 116 and 122 may be, for example, cellular phones, smartphones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and / or any other suitable for communicating on the wireless communication system 100 device.

As shown in FIG. 1, the terminal device 116 communicates with the

antennas

112 and 114, where the

antennas

112 and 114 send information to the terminal device 116 through the forward link 118 and receive information from the terminal device 116 through the reverse link 120. In addition, the terminal device 122 communicates with the

antennas

104 and 106, where the

antennas

104 and 106 send information to the terminal device 122 through the forward link 124 and receive information from the terminal device 122 through the reverse link 126.

For example, in a frequency division duplex FDD system, for example, forward link 118 may utilize a different frequency band from that used by reverse link 120, and forward link 124 may utilize a different frequency band from that used by reverse link 126 .

As another example, in a time division duplex TDD system and a full duplex system, the forward link 118 and the reverse link 120 may use a common frequency band, and the forward link 124 and the reverse link 126 may use a common frequency band. frequency band.

Each set of antennas and / or areas designed for communication is referred to as a sector of the network device 102. For example, the antenna group may be designed to communicate with terminal devices in a sector covered by the network device 102. In the process that the network device 102 communicates with the terminal devices 116 and 122 through the

forward links

118 and 124, respectively, the transmitting antennas of the network device 102 can use beamforming to improve the signal-to-noise ratio of the

forward links

118 and 124. In addition, compared with the way in which a network device sends signals to all of its terminal devices through a single antenna, when the network device 102 uses beamforming to send signals to terminal devices 116 and 122 randomly dispersed in the relevant coverage area, the Mobile devices experience less interference.

At a given time, the network device 102, the terminal device 116, or the terminal device 122 may be a wireless communication transmitting apparatus and / or a wireless communication receiving apparatus. When transmitting data, the wireless communication transmitting device may encode the data for transmission. Specifically, the wireless communication transmitting device may acquire a certain number of data bits to be transmitted to the wireless communication receiving device through a channel. For example, the wireless communication transmitting device may generate, receive from other communication devices, or save in a memory, etc., to be transmitted through the channel. A certain number of data bits to a wireless communication receiving device. Such data bits may be contained in a transport block or multiple transport blocks of data, which may be segmented to generate multiple code blocks.

In addition, the communication system 100 may be a public land mobile network, a PLMN network, or a device-to-device (D2D) network, or a machine-to-machine (M2M) network, or other networks. Simplified schematic diagram, the network can also include other network equipment, not shown in Figure 1. The terminal device 116 or the terminal device 122 may be a D2D terminal device, an M2M terminal device, or a V2X terminal device.

The embodiments of the present application will be described in detail below with specific examples. It should be noted that this is only to help those skilled in the art to better understand the embodiments of the present application, and not to limit the scope of the embodiments of the present application.

It should be understood that, in the embodiments of the present application, “first”, “second”, and the like are only used to refer to different objects, and do not indicate that there are other restrictions on the referred objects.

FIG. 7 is an interaction diagram of a method for sending control information according to an embodiment of the present application. The method in FIG. 7 may be applied to the network architecture in FIG. 1 or FIG. 2. The method of FIG. 7 includes:

S210. The first terminal device determines a first bandwidth part BWP.

It should be noted that the determination of the first BWP by the first terminal device may include but is not limited to the following two methods: determining the first BWP according to an instruction of the base station, or determining the first BWP by the terminal device autonomously. It should be understood that the first BWP is currently in an inactive state.

1a: Determine the first BWP through central control, that is, the network device may send DCI to the first terminal device or the network device may send instruction information to the first terminal device. The instruction information includes an instruction to instruct the first terminal device to switch to the first BWP. Information.

For example, the first control device may receive instruction information sent by the network device, where the instruction information includes information that instructs the first terminal device to switch to a first bandwidth portion.

1b: The first BWP is determined in a distributed manner, that is, the first terminal device may find that the channel quality of the current BWP, that is, the second BWP is poor, and the first terminal device may actively perform BWP handover. The first terminal device may determine to switch to the first BWP with better channel quality.

S220. The first terminal device sends N times of control information to the second terminal device, and at least one of the N times of control information includes first indication information, where the first indication information is used to activate the first Bandwidth part BWP, where N is a positive integer greater than or equal to 1.

It should be noted that, in order to ensure the reliability of the communication system, the first terminal device may send the control information to the second terminal device N times, for example, the first terminal device sends the SCI to the second terminal device N times. At least one of the N times of control information includes first indication information, wherein the first indication information is used to activate the first bandwidth part BWP, and N is a positive integer greater than or equal to 1.

S230. The second terminal device activates the first BWP according to the first instruction information.

Optionally, at least one of the N times of control information further includes second instruction information, and the second instruction information is used to deactivate a second BWP.

It should be understood that the second instruction information may be the first instruction information, that is, the second BWP is simultaneously deactivated and the first BWP is activated through one instruction information.

Optionally, the sending, by the first terminal device, N times of control information to the second terminal device includes:

For example, the first terminal device sends the K control information at least once to the second terminal device, and the control information may include a value of K.

It should be noted that, in the embodiment of the present application, the K times of control information sent by the first terminal device to the second terminal device includes first instruction information, which indicates activation of the first BWP. After the second terminal device activates the first BWP, it receives the K + 1th to N-Kth control information on the first BWP.

Optionally, K is determined according to a first time M, and the first time M is a processing delay value of the first terminal device or a timing configured for the network device to the first terminal device. value.

For example, the first terminal device may determine the number of times the control information is sent on the first BWP and the second BWP according to the first time M. The first time M may be a processing delay value of the first terminal device itself or the first time M may also be a timing value configured by the network device to the first terminal device.

Specifically, the first terminal device may send control information K times in the second BWP before the first time M; after the second time, the first terminal device sends control information N-K times in the first BWP. Among them, K times may be determined according to the first time M.

It should be understood that when only one BWP is supported between the first terminal device (for example, a sending terminal device) and the second terminal device (for example, a receiving terminal device), the first terminal device sends N times to the second terminal device. Control information, in order to ensure that the second terminal device can learn that the first terminal device has switched the BWP. If the control information is sent on the BWP after N times, that is, the control information is sent on the first BWP, the second terminal device cannot receive the control information sent by the first terminal device. Therefore, the first terminal device needs to send the control information at least once on the second BWP, and the control information includes the first indication information.

Optionally, the control information further includes resource information of the first data packet, and the method further includes:

The first terminal device may send the first data packet X times to the second terminal device, where the first terminal device sends the first data packet Y times on the second BWP and the XY times on the first BWP In the first data packet, X is greater than Y, and X and Y are positive integers.

It should be understood that when the first terminal device sends data packets multiple times, the first data packet sent by the first terminal device each time may be exactly the same, or partly the same, or X times the first data packet is completely different. One possible way is that the first data packet sent each time is all the same. For example, in order to ensure the reliability of data packet transmission, the first terminal device repeatedly sends the same data packet to the second terminal device multiple times, so that the second terminal device can correctly receive it. Or, one possible way, the content sent each time is partially the same. For example, the first data packet of X times contains a part of data of a complete data packet, and there is overlap between the part of data. Or, as a possible way, the content sent each time may be all different. For example, for the data to be sent, each time the first terminal device sends part of the data, the content of the data is sent to the second terminal device in multiple times, and there is no overlap between the data. In this regard, the embodiments of the present application are not limited.

It should be understood that the first time M may be a delay value of control information, the second time L may be a delay value of data information, and the first time M and the second time L may be the same or different. For example, the first terminal device sends the K control information at least once to the second terminal device, and the control information may include a value of K. For example, the first terminal device sending the control information to the second terminal device at least once may include the value of the first time M in the control information. The first time M may be the shortest time for the first terminal device to switch from the second BWP to the first BWP.

The control information at least one time that the first terminal device sends the control information to the second terminal device K times includes a value that may include a second time L. The second time L may be the shortest time for the data on the second BWP to switch to the first BWP.

Optionally, the K-time control information includes resource information of the Y-th first data packet; the K-time control information or the N-K-time control information includes resource information of the X-Y first data packet. For example, the first terminal device sends the control information to the second terminal device at least one time, and the control information may include a value of Y.

It should be understood that, in the embodiment of the present application, the control information may be scheduled once for a data packet, and the control information may be scheduled for multiple data packets. Therefore, the K times of control information may be used to instruct the first terminal device to send resource information of the Y first data packet, and the K times of control information or NK times of control information may be used to instruct the first terminal device to send XY Resource information for the first packet.

Optionally, in an example, the first terminal device sending control information to the second terminal device N times includes:

The first terminal device sends the N times of control information to a second terminal device on a third BWP, where the third BWP configures at least two activated terminals between the first terminal device and the second terminal device. One of the BWP.

It should be understood that when at least two BWPs are supported between the first terminal device (for example, a sending terminal device) and the second terminal device (for example, a receiving terminal device) in an activated state, the first terminal device may pass the first The three BWPs send control information to the second terminal device N times, and at least one of the N control information includes first indication information, wherein the first indication information is used to activate the first bandwidth part BWP, and the N is A positive integer greater than or equal to 1.

It should be noted that when the first terminal device (for example, the sending terminal device) and the second terminal device support at least two BWPs in the activated state, the control information sent N times may include instruction information for deactivating the BWP. . For example, the control information at least once in the N times of control information further includes second instruction information, and the second instruction information is used to deactivate the second BWP.

The first terminal device may send the first data packet X times to the second terminal device, where X is a positive integer.

Optionally, the first terminal device may send the first data packet X times to the second terminal device, including:

The first terminal sends the first data packet X times on a second BWP.

The first terminal device sends the first data packet Y times on the second BWP, and sends the first data packet X-Y times on the first BWP. X is greater than Y, and X and Y are positive integers.

It should be understood that when the first terminal device sends data packets multiple times, the first data packet sent by the first terminal device each time may be exactly the same, or partly the same, or X times the first data packet is completely different. One possible way is that the first data packet sent each time is all the same. For example, in order to ensure the reliability of data packet transmission, the first terminal device repeatedly sends the same data packet to the second terminal device multiple times so that the second terminal device can correctly receive it. Or, one possible way, the content sent each time is partially the same. For example, the first data packet of X times contains a part of data of a complete data packet, and there is overlap between the part of data. Or, in a possible way, the content sent each time may be all different. For example, for the data to be sent, each time the first terminal device sends part of the data, the content of the data is sent to the second terminal device in multiple times, and there is no overlap between the data. In this regard, the embodiments of the present application are not limited.

Optionally, the Y is determined according to a second time L, where the second time L is a processing delay value of the first terminal device or a timing configured for the network device to the first terminal device. value.

Optionally, the first terminal device receives configuration information sent by a network device, where the configuration information includes information about at least one bandwidth portion configured by the network device to the first terminal device; the first terminal device sends the second terminal device to the second The terminal device sends the configuration information.

That is, the network device may send multiple BWP configuration information to the first terminal device, and the first terminal device may forward the configuration information to the second terminal device after receiving the configuration information.

Optionally, the first indication information is an identifier of the first bandwidth part.

It should be understood that, in the embodiment of the present application, at least one of the first terminal device sending the N control information to the second terminal device includes the first indication information, and the first indication information is used to activate the first bandwidth part. BWP. The first indication information may be an identifier of the first bandwidth part, that is, in the embodiment of the present application, the second terminal device is explicitly instructed to activate the first BWP.

Optionally, the control information is carried in signaling at a physical layer, or signaling at a MAC layer, or signaling at an RRC layer.

For example, the first terminal device sends control information to the second terminal device, and the signaling that the control information can carry includes at least the following four types:

2a. The control information may be carried in the signaling of the physical layer.

For example, the control information sent by the first terminal device to the second terminal device is carried in the SCI of the physical layer. The SCI may include first indication information for instructing the second terminal device to activate the first bandwidth part BWP.

2b. The control information may be carried in the signaling of the MAC layer.

For example, the control information sent by the first terminal device to the second terminal device is carried in the MAC CE. The MAC CE may include first indication information for instructing the second terminal device to activate the first bandwidth part BWP.

2c. The control information may be carried in signaling of the RRC layer.

For example, the control information sent by the first terminal device to the second terminal device is carried in the RRC IE. The RRCIE may include first indication information for instructing the second terminal device to activate the first bandwidth part BWP.

2d. The control information can be carried in the MIB or SIB.

For example, the control information sent by the first terminal device to the second terminal device is carried in a system message MIB or SIB. The system message MIB or SIB may include first indication information for instructing the second terminal device to activate the first bandwidth part BWP.

In one example, the second terminal device may be instructed to activate the first BWP by means of an implicit indication.

For example, the first terminal device determines the first bandwidth part BWP; the first terminal device sends control information to the second terminal device N times, and the control information is sent on the first resource at least once among the N times of control information, so N is a positive integer greater than or equal to 1, wherein the first resource is determined according to the first BWP. The second terminal device receives the control information at least once on the first resource, and the second terminal device activates the first BWP.

It should be understood that the first bandwidth part is in an inactive state. When the second terminal device receives the control information on the first resource at least once, it determines that the first bandwidth part BWP is activated. That is, the second terminal device determines the first BWP according to the first resource. An association relationship exists between the first resource and the first BWP, and the association relationship may be a mapping relationship configured by the network device to the first terminal device and the second terminal device, or may be a relationship between the first terminal device and the second terminal device. Preset rules.

It should be noted that the determination of the first BWP by the first terminal device may include but is not limited to the following two methods: determining the first BWP according to an instruction of the base station, or determining the first BWP by the terminal device autonomously. It should be understood that the first BWP is a portion of the bandwidth that is currently not activated.

Optionally, at least one of the N control information messages sent on the first resource is also used to deactivate a second BWP, where the first resource is a first subchannel, a first One of the first resource pool on the two BWPs or the first dedicated resource on the second BWP, the method includes:

Optionally, the receiving, by the second terminal device, N times of control information sent by the first terminal device includes:

Receiving, by the second terminal device, K times of control information sent by the first terminal device on a second BWP, and receiving N-K times of control information on the first BWP;

For example, the first terminal device sending the control information to the second terminal device at least once may include the value of the first time M in the control information. The first time M may be the shortest time for the first terminal device to switch from the second BWP to the first BWP.

Specifically, the first terminal device may send the control information K times in the second BWP before the first time M; after the second time, the first terminal device sends the control information N-K times in the first BWP. Among them, K times may be determined according to the first time M.

It should be understood that when only one BWP is supported between the first terminal device (for example, a sending terminal device) and the second terminal device (for example, a receiving terminal device), the first terminal device sends N times to the second terminal device. The control information is sent at least once on the first resource of the second BWP by means of an implicit indication, so as to ensure that the second terminal device can know that the first terminal device has switched the BWP. When the second terminal device activates the first BWP, the second BWP is deactivated.

For example, control information sent on a specific subchannel on the second BWP is associated with the first BWP. If the first terminal device sends control information on the specific subchannel # 1 reserved on the second BWP at least once, the first terminal device is described Will switch to the new BWP # 1; if the first terminal device sends control information at least once on the specific subchannel # 2 reserved on the second BWP, it means that the first terminal device will switch to the new BWP # 2.

For example, the dedicated information or resource pool on the second BWP sent by the control information is associated with the first BWP. If the second terminal device detects the control information on the dedicated resource or resource pool # 1 on the second BWP, the first terminal is explained. The device will switch to the new BWP # 1; if the second terminal device detects control information on the dedicated resource or resource pool # 2 on the second BWP, it means that the first terminal device will switch to the new BWP # 2.

Optionally, the sending, by the first terminal device, the first data packet X times to the second terminal device includes:

It should be understood that when the first terminal device sends data packets multiple times, the first data packet sent by the first terminal device each time may be exactly the same, or partly the same, or X times the first data packet is completely different. One possible way is that the first data packet sent each time is all the same. For example, in order to ensure the reliability of data packet transmission, the first terminal device repeatedly sends the same data packet to the second terminal device multiple times, so that the second terminal device can correctly receive it. Or, one possible way, the content sent each time is partially the same. For example, the first data packet of X times contains a part of data of a complete data packet, and there is overlap between the part of data. Or, in a possible way, the content sent each time may be all different. For example, for the data to be sent, each time the first terminal device sends part of the data, the content of the data is sent to the second terminal device in multiple times, and there is no overlap between the data. In this regard, the embodiments of the present application are not limited.

For example, the at least one control information sent by the first terminal device to the second terminal device K times of control information includes a value that may include a second time L. The second time L may be the shortest time for the data on the second BWP to switch to the first BWP.

Optionally, the K-times control information includes resource information of the Y-th first data packet; the K-times control information or the N-K-times control information includes resource information of the X-Y-th first data packet.

For example, the first terminal device sends the control information to the second terminal device at least one time, and the control information may include a value of Y.

Optionally, in an example, the first resource is one of a second subchannel on a third BWP, a second resource pool on a third BWP, or a second dedicated resource on a third BWP, the The third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device, and the method includes:

It should be understood that when at least two BWPs are supported between the first terminal device (for example, a sending terminal device) and the second terminal device (for example, a receiving terminal device) in an activated state, the first terminal device may pass the first The three BWPs send control information to the second terminal device N times, and the control information is sent at least once on the first resource of the third BWP by means of an implicit instruction, thereby ensuring that the second terminal device can know that the first terminal device has performed BWP. Switch, that is, activate the first BWP.

For example, the control information sent on a specific subchannel on the third BWP is associated with the first BWP. If the first terminal device sends the control information on the specific subchannel # 1 reserved on the third BWP at least once, the first terminal device Will switch to the new BWP # 1; if the first terminal device sends control information at least once on a specific subchannel # 4 reserved on the third BWP, the first terminal device will switch to the new BWP # 4 .

For example, the control information is sent to the dedicated resource or dedicated resource pool on the third BWP and is associated with the first BWP. The control information is sent at least once on the dedicated resource pool on the third BWP. If the second terminal device is on the third BWP, Detecting control information on the dedicated resource or resource pool # 1 will indicate that the first terminal device switches the second BWP to the new BWP # 1; if the second terminal device is on the dedicated resource or resource pool on the third BWP The control information is detected on # 4, which will explain that the first terminal device switches the second BWP to the new BWP # 4.

It should be noted that the implicit notification may also include other possible implementation manners, for example, the first BWP is obtained indirectly through the CCE index / symbol number / symbol position / slot of the control information at least once. This application does not limit this.

It should be understood that the control information of at least one of the N times of control information is information sent on the first resource and also used to indicate deactivation of the BWP. For example, the control information sent at least once among the N times of control information is also used to deactivate the second BWP.

The first terminal device sends the first data packet X times on a second BWP, where the second BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device. One.

2b. The control information may be carried in the signaling of the MAC layer.

2c. The control information may be carried in signaling of the RRC layer.

2d. The control information can be carried in the MIB or SIB.

Optionally, in an example, the network device may directly send the first instruction information and configuration information to the first terminal device and the second terminal device, that is, in the embodiment of the present application, the method for activating the first bandwidth part BWP The information may not need to be forwarded to the second terminal device through the first terminal device, and the network device may directly send the first instruction information to the first terminal device and the second terminal device.

For example, the network device configures at least one bandwidth part BWP, where the at least one BWP includes a first BWP;

The network device sends first instruction information to the first terminal device and the second terminal device, where the first instruction information is used to activate the first BWP.

Optionally, the first indication information is carried in a MIB message; or, the first indication information is carried in a SIB message; or the first indication information is carried in RRC signaling; or the first indication information Carried in MAC signaling; or, the first indication information is carried in DCI signaling.

Optionally, the first indication information further includes at least one of an identifier of the first terminal device, an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group. The terminal device pair and the terminal device group include the first terminal device and the second terminal device.

Optionally, the method further includes:

Optionally, the configuration information includes at least one of an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group, wherein the terminal device pair and the terminal device group include all The second terminal device is described.

For example, if the edge link between the first terminal device and the second terminal device is unicast, the network device sends the BWP configuration and the first indication information to a UE pair consisting of the first terminal device and the second terminal device. . The network device may send to the first terminal device and the second terminal device at the same time, or may send to the first terminal device and the second terminal device separately.

For example, if the edge link between the first terminal device and the second terminal device is multicast, the network device sends the BWP configuration and the first indication information to the group where the first terminal device and the second terminal device are located.

For example, if the edge link between the first terminal device and the second terminal device is broadcast, the network device broadcasts the BWP configuration and the first indication information; the second terminal device receives the broadcast message, and the second terminal can receive the broadcast message. The device can monitor the PSCCH / PSSCH transmission of the first terminal device.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present application. The implementation process constitutes any limitation.

The method for sending or receiving control information according to the embodiment of the present application is described in detail above. In this application, the first terminal device sends the control information to the second terminal device. The control information includes an The first indication information for activating the first BWP, or through an implicit indication method, that is, sending control information on the first resource at least once, so that the second terminal device can know that the first terminal device has switched the BWP. It should be understood that the first terminal device, the second terminal device, and the network device in the embodiments of the present application can execute the foregoing methods in the embodiments of the present application, that is, the specific working processes of the following various products, refer to the foregoing method embodiments. Correspondence process.

FIG. 8 is a schematic block diagram of an apparatus 600 for sending control information according to an embodiment of the present application. It should be understood that the apparatus 600 can execute the steps in the method in FIG. 7 and possible implementations performed by the first terminal device. To avoid repetition, details are not described herein. The apparatus 600 includes a processing unit 610 and a communication unit 620.

The processing unit 610 is configured to determine a first bandwidth part BWP; the communication unit 620 is configured to send control information to the second terminal device N times, and at least one of the N times of control information includes first indication information, wherein, the The first indication information is used to activate the first bandwidth part BWP, and the N is a positive integer greater than or equal to 1.

Optionally, the communication unit 620 is specifically configured to send K times of control information on the second BWP and NK times of control information on the first BWP; at least one of the N times of control information includes a first indication Information, including:

Optionally, the communication unit 620 is specifically configured to send the N control information to a second terminal device on a third BWP, where the third BWP is the first terminal device and the second terminal device One of at least two BWPs that has been activated in the meantime.

Optionally, the communication unit 620 is further configured to send the first data packet X times to the second terminal device, where X is a positive integer.

Optionally, the communication unit 620 is specifically configured to: send the first data packet Y times on the second BWP, and send the first data packet XY times on the first BWP, where Y is a positive number less than or equal to X Integer.

Optionally, the K times of control information is used to instruct the first terminal device to send the resource of the Y times of data information; the K times of control information or the NK times of control information is used to indicate the first terminal The device sends the resource of the XY times data information.

Optionally, the communication unit 620 is further configured to receive third instruction information sent by a network device, where the third instruction information is used to instruct the first terminal device to switch to a first bandwidth portion.

Optionally, the communication unit 620 is further configured to: receive configuration information sent by the network device, where the configuration information includes information about at least one bandwidth portion configured by the network device to the first terminal device; The second terminal device sends the configuration information.

In the embodiment of the present application, the apparatus 600 includes: a processing unit 610 and a communication unit 620.

A processing unit 610, configured to determine a first bandwidth part BWP;

A communication unit 620, configured to send control information to the second terminal device N times, at least one of the N times of control information is sent on the first resource, where N is a positive integer greater than or equal to 1, The first resource is determined according to the first BWP.

Optionally, at least one of the N control information messages sent on the first resource is also used to deactivate a second BWP, where the first resource is a first subchannel, a first One of the first resource pool on the two BWPs or the first dedicated resource on the second BWP, the communication unit 620 is specifically configured to:

Sending control information N times to the second terminal device, at least one of the N control information is sent on the first subchannel, or the first resource pool, or the first dedicated resource The first subchannel, or the first resource pool, or the first dedicated resource is determined according to the first BWP.

Optionally, the communication unit 620 is specifically configured to:

Optionally, the first resource is one of a second subchannel on the third BWP, a second resource pool on the third BWP, or a second dedicated resource on the third BWP, and the third BWP is Said one of the at least two BWPs activated between the first terminal device and the second terminal device, the communication unit 620 is specifically configured to:

Optionally, the communication unit 620 is specifically configured to send the first data packet X times in the third BWP, and the third BWP is an activated one between the first terminal device and the second terminal device. One of at least two BWPs.

The communication unit 620 is configured to receive first indication information sent by a network device, where the first indication information is used to activate a first bandwidth part BWP;

The processing unit 610 is configured to activate the first BWP according to the first instruction information.

Optionally, the first indication information includes at least one of an identifier of the device, an identifier of a terminal device pair, and an identifier of a terminal device group, wherein the terminal device pair and the terminal device group include the所述装置。 The device.

Optionally, the communication unit 620 is further configured to:

Receiving configuration information sent by the network device, where the configuration information includes information on at least one bandwidth portion configured by the network device.

Optionally, the configuration information includes at least one of an identifier of the device, an identifier of a terminal device pair, and an identifier of a terminal device group, wherein the terminal device pair and the terminal device group include the Device.

It can be understood that, for implementation manners and interactions of various units in the apparatus 600 in the embodiment of the present application, reference may be made to related descriptions in the method embodiments.

FIG. 9 is a schematic block diagram of an apparatus 700 for receiving control information according to an embodiment of the present application. It should be understood that the apparatus 700 can perform the steps in the method in FIG. 7 and the possible implementation manners performed by the second terminal device. To avoid repetition, details are not described herein. The apparatus 700 includes a processing unit 710 and a communication unit 720.

The communication unit 720 is configured to receive N times of control information sent by the first terminal device, where at least one of the N times of control information includes first instruction information, and the first instruction information is used to activate the first A bandwidth part BWP, where N is a positive integer greater than or equal to 1;

The processing unit 710 is configured to activate the first BWP according to the first instruction information.

Optionally, the communication unit 720 is specifically configured to: the second terminal device receives control information K times on a second BWP, and receives control information N-K times on the first BWP;

Optionally, the communication unit 720 is specifically configured to receive the N control information at a third BWP, where the third BWP is at least two activated between the first terminal device and the second terminal device. One of the BWP.

Optionally, the communication unit 720 is further configured to receive the first data packet sent X times by the first terminal device, where X is a positive integer.

Optionally, the communication unit 720 is specifically configured to: receive the first data packet Y times on the second BWP, and receive the first data packet XY times on the first BWP, where Y is less than or A positive integer equal to X.

Optionally, the K times control information includes resource information of the first data packet of the Y times; the K times control information or the NK time control information includes the XY times of the first data packet Resource information.

Optionally, the communication unit 720 is further configured to receive configuration information sent by the first terminal device, where the configuration information includes information about at least one bandwidth portion configured by the network device to the first terminal device.

In the embodiment of the present application, the apparatus 700 includes a processing unit 710 and a communication unit 720.

The communication unit 720 is configured to receive N times of control information sent by the first terminal device. At least one of the N times of control information is received on the first resource, where N is a positive integer greater than or equal to 1. ;

The processing unit 710 is configured to determine to activate the first bandwidth part BWP according to the first resource.

Optionally, at least one of the N control information messages sent on the first resource is also used to deactivate a second BWP, where the first resource is a first subchannel, a first One of the first resource pool on the two BWPs or the first dedicated resource on the second BWP, the communication unit 720 is specifically configured to:

Optionally, the communication unit 720 is specifically configured to:

Receiving K times of control information sent by the first terminal device on the second BWP, and receiving N-K times of control information on the first BWP;

Optionally, the first resource is one of a second subchannel on the third BWP, a second resource pool on the third BWP, or a second dedicated resource on the third BWP, and the third BWP is Said one of at least two BWPs activated between the first terminal device and the second terminal device, the communication unit 720 is specifically configured to:

Receiving, on the third BWP, N times of control information sent by the first terminal device, and at least one of the N times of control information is on the second subchannel or the second resource pool, Or received on the second dedicated resource, determining the first BWP according to the second subchannel, or the second resource pool, or the second dedicated resource.

The communication unit 720 is configured to receive first indication information sent by a network device, where the first indication information is used to activate a first bandwidth part BWP;

Optionally, the first indication information includes at least one of an identifier of the device, an identifier of a terminal device pair, and an identifier of a terminal device group, wherein the terminal device pair and the terminal device group include the The second terminal device.

Optionally, the communication unit 720 is further configured to:

It can be understood that, for implementation manners and interactions of various units in the apparatus 700 in the embodiment of the present application, reference may be made to related descriptions in the method embodiments.

FIG. 10 is a schematic block diagram of an apparatus 800 for sending control information according to an embodiment of the present application. It should be understood that the apparatus 800 can execute each step performed by a network device in the foregoing method embodiments and possible implementation manners. To avoid repetition, details are not described herein. The apparatus 800 includes a processing unit 810 and a communication unit 820.

The processing unit 810 is configured to configure at least one bandwidth part, and the at least one BWP includes a first BWP; the communication unit 820 is configured to send first indication information to the first terminal device and the second terminal device, The first indication information is used to activate a first bandwidth part BWP.

Optionally, the first indication information includes at least one of an identifier of the first terminal device, an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group, wherein the terminal The device pair and the terminal device group include the first terminal device and the second terminal device.

Optionally, the communication unit 820 is further configured to send configuration information to the first terminal device and the second terminal device, where the configuration information includes at least a configuration configured by the network device to the first terminal device. Information about a bandwidth component.

Optionally, the configuration information includes at least one of an identifier of the first terminal device, an identifier of the second terminal device, an identifier of a terminal device pair, and an identifier of a terminal device group, wherein the terminal device pair And the terminal device group includes the first terminal device and the second terminal device.

It can be understood that, for implementation manners and interactions of various units in the apparatus 800 in the embodiments of the present application, reference may be made to related descriptions in the method embodiments.

It may be understood that each unit module in the device 600, the device 700, and the device 800 may be separately provided or integrated. The above-mentioned respective unit modules may also be referred to as components or circuits.

It can be understood that the above device 600 or device 700 or device 800 may be implemented by at least one processor, may also be implemented by at least one processor and at least one memory, and may also be implemented by at least one processor and at least one transceiver. It may be implemented by at least one processor and at least transceiver and at least one memory. The aforementioned processors, transceivers and memories can be set independently or integrated together.

FIG. 11 is a schematic structural diagram of a device. The apparatus 1000 may be used to implement a method of a corresponding portion of the first terminal device described in the foregoing method embodiment, or may be used to implement a method of a corresponding portion of the first terminal device described in the foregoing method embodiment, or may be used For implementing the network device described in the foregoing method embodiment, specifically refer to the description in the foregoing method embodiment.

The device 1000 may include one or more processors 31. The processor 31 may also be referred to as a processing unit, and may implement certain control functions. The processor 31 may be a general-purpose processor or a special-purpose processor.

In an optional design, the memory 32 may also store an instruction 33, and the instruction 33 may be executed by the processor 31, so that the apparatus 1000 executes the first terminal device corresponding to the method described in the foregoing method embodiment. Or a method implemented by a first terminal device or a network device.

In yet another possible design, the device 1000 may include a circuit that can implement the functions of sending, receiving, or communicating in the foregoing method embodiments.

Optionally, the device 1000 may include one or more memories 32 on which instructions 33 or intermediate data are stored. The instructions 33 may be executed on the processor 31 so that the device 1000 executes the foregoing. A method of a first terminal device or a second terminal device or a network device in a method embodiment. Optionally, other relevant data may also be stored in the memory. Optionally, instructions and / or data may also be stored in the processor. The processor and the memory may be set separately or integrated together.

Optionally, the apparatus 1000 may further include a transceiver 35. The processor 31 may be referred to as a processing unit. The transceiver 35 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement a transceiver function of the device.

In one design, a device (eg, integrated circuit, wireless device, circuit module, network device, terminal, etc.) that sends control information may include a processor and a transceiver. If the apparatus is used for the steps or operations of the first terminal device in the foregoing method embodiment, for example, the processor 31 may determine the first bandwidth part BWP;

The transceiver 35 sends control information to the second terminal device N times, at least one of the N times of control information includes first indication information, wherein the first indication information is used to activate the first bandwidth part BWP, so Let N be a positive integer greater than or equal to 1.

Optionally, the transceiver 35 is specifically configured to:

Optionally, the control information further includes resource information of the first data packet, and the transceiver 35 is further configured to:

Sending the first data packet X times to the second terminal device, where X is a positive integer.

Optionally, the transceiver 35 is specifically configured to:

A first data packet is sent Y times on the second BWP, and a first data packet is sent X-Y times on the first BWP, where Y is a positive integer less than or equal to X.

Optionally, the K-time control information includes resource information of the Y-th first data packet; the K-time control information or the N-K-time control information includes resource information of the X-Y first data packet.

Optionally, the transceiver 35 is further configured to:

Receiving third instruction information sent by a network device, where the third instruction information is used to instruct the first terminal device to switch to a first bandwidth portion

Optionally, the transceiver 35 is further configured to:

Receiving configuration information sent by the network device, where the configuration information includes information of at least one bandwidth portion configured by the network device to the first terminal device;

The transceiver 35 sends control information to the second terminal device N times. At least one of the N control information is sent on the first resource. The N is a positive integer greater than or equal to 1. The first resource is determined according to the first BWP.

Optionally, at least one of the N control information messages sent on the first resource is also used to deactivate a second BWP, where the first resource is a first subchannel, a first One of the first resource pool on the two BWPs or the first dedicated resource on the second BWP, the transceiver 35 is specifically configured to:

Optionally, the transceiver 35 is specifically configured to:

Optionally, the first resource is one of a second subchannel on the third BWP, a second resource pool on the third BWP, or a second dedicated resource on the third BWP, and the third BWP is Said one of the at least two BWPs activated between the first terminal device and the second terminal device, the transceiver 35 is specifically configured to:

Optionally, the transceiver 35 is specifically configured to:

Optionally, the transceiver 35 is further configured to:

In one design, a device (eg, integrated circuit, wireless device, circuit module, network device, terminal, etc.) that sends control information may include a processor and a transceiver. If the apparatus is used in the steps or operations of the first terminal device in the foregoing method embodiment, for example, the transceiver 35 may receive the first instruction information sent by the network device, where the first instruction information is used to activate the first One bandwidth part BWP;

The processor 31 activates the first BWP according to the first instruction information.

Optionally, the transceiver 35 is further configured to:

In one design, a device (eg, integrated circuit, wireless device, circuit module, network device, terminal, etc.) that receives control information may include a processor and a transceiver. If the apparatus is used for the steps or operations of the second terminal device in the foregoing method embodiment, for example, the transceiver 35 may receive N times of control information sent by the first terminal device, where the N times of control information Including the first indication information at least once, wherein the first indication information is used to activate the first bandwidth part BWP, and the N is a positive integer greater than or equal to 1;

Optionally, the transceiver 35 is specifically configured to:

Receiving control information K times on a second BWP, and receiving control information N-K times on the first BWP;

Optionally, the transceiver 35 is specifically configured to:

Receiving the control information N times in a third BWP, where the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device.

Optionally, the transceiver 35 is further configured to receive the first data packet sent X times by the first terminal device, where X is a positive integer.

Optionally, the transceiver 35 is specifically configured to receive the first data packet Y times on the second BWP, and receive the first data packet XY times on the first BWP, where Y is less than or A positive integer equal to X.

In one design, a device (eg, integrated circuit, wireless device, circuit module, network device, terminal, etc.) that receives control information may include a processor and a transceiver. If the apparatus is used for the steps or operations of the second terminal device in the foregoing method embodiment, for example, the transceiver 35 may receive N times of control information sent by the first terminal device, and at least one of the N times of control information controls The information is received on the first resource, and N is a positive integer greater than or equal to 1;

The processor 31 determines to activate the first bandwidth part BWP according to the first resource.

Optionally, the transceiver 35 is specifically configured to:

In one design, a device (eg, integrated circuit, wireless device, circuit module, network device, terminal, etc.) that receives control information may include a processor and a transceiver. If the apparatus is used for the steps or operations of the second terminal device in the foregoing method embodiment, for example, the transceiver 35 may receive the first instruction information sent by the network device, where the first instruction information is used to activate the first One bandwidth part BWP;

Optionally, the transceiver 35 is further configured to:

In one design, a device (eg, integrated circuit, wireless device, circuit module, network device, terminal, etc.) that sends control information may include a processor and a transceiver. If the apparatus is used for the steps or operations of the network device in the foregoing method embodiment, for example, the processor 31 may configure at least one bandwidth part BWP, where the at least one BWP includes a first BWP;

The transceiver 35 sends first instruction information to the first terminal device and the second terminal device, where the first instruction information is used to activate the first BWP.

Optionally, the transceiver 35 is further configured to:

Sending configuration information to the first terminal device and the second terminal device, where the configuration information includes information on at least one bandwidth portion configured by the network device.

The processors and transceivers described in this application can be implemented in integrated circuits (ICs), analog ICs, radio-frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), and printed circuit boards (ICs). printed circuit (PCB), electronic equipment, etc. The processor and transceiver can also be manufactured with various 1C process technologies, such as complementary metal oxide semiconductor (CMOS), n-metal oxide semiconductor (NMOS), and P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

Although in the above description of the embodiment, the device 1000 is described by taking an AMF entity or an access network device or terminal as an example, the scope of the communication device described in this application is not limited to the AMF entity or the access network device or terminal, and The structure of the communication device may not be limited by FIG. 11. The communication device may be a stand-alone device or may be part of a larger device. For example, the device may be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) a set having one or more ICs, optionally, the IC set may also include a storage component for storing data and / or instructions;

(3) ASIC, such as a modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, cellular phones, wireless devices, handsets, mobile units, network equipment, etc .;

(6) Others and so on.

It should be understood that, in the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship between related objects, and indicates that there can be three kinds of relationships. For example, A and / or B can indicate: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are an "or" relationship. "At least one or more of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one (a) of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.

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

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

The above is only a specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A method for transmitting control information, comprising:

The first terminal device determines a first bandwidth part BWP;

The first terminal device sends control information to the second terminal device N times, and at least one of the N times of control information includes first instruction information, wherein the first instruction information is used to activate the first bandwidth part. BWP, where N is a positive integer greater than or equal to 1.
The method according to claim 1, wherein the sending, by the first terminal device, N times of control information to the second terminal device comprises:

Sending, by the first terminal device, control information K times on a second BWP, and sending control information N-K times on the first BWP;

At least one of the N times of control information includes first indication information, including:

At least one of the K times of control information includes the first indication information, and K is a positive integer less than or equal to N.
The method according to claim 1, wherein the sending, by the first terminal device, N times of control information to the second terminal device comprises:

The first terminal device sends the N control information to a second terminal device on a third BWP, where the third BWP is at least two activated between the first terminal device and the second terminal device. One of the BWP.
The method according to any one of claims 1 to 3, wherein the control information further includes resource information of a first data packet, and the method further includes:

The first terminal device sends the first data packet X times to the second terminal device, where X is a positive integer.
The method according to claim 4, wherein the sending, by the first terminal device, the first data packet X times to the second terminal device comprises:

The first terminal device sends the first data packet Y times on the second BWP, and sends the first data packet X-Y times on the first BWP, where Y is a positive integer less than or equal to X.
The method according to any one of claims 2 to 5, wherein the K times of control information includes resource information of the first data packet Y times; the K times of control information or the NK times of control The information includes resource information of the first data packet XY times.
The method according to any one of claims 2 to 6, wherein the K is determined according to a first time M, wherein the first time M is a processing delay of the first terminal device Value, or the first time M is a timing value configured by the network device to the first terminal device.
A method for transmitting control information, comprising:

The first terminal device determines a first bandwidth part BWP;

The first terminal device sends N times of control information to the second terminal device, wherein at least one of the N times of control information is sent on the first resource, and N is a positive number greater than or equal to 1. An integer, the first resource is determined according to the first BWP.
The method according to claim 8, wherein at least one of the N control information is sent on the first resource and is further used to deactivate a second BWP, and the first resource is the second resource. One of a first subchannel on a second BWP, a first resource pool on the second BWP, or a first dedicated resource on the second BWP, the method includes:

The first terminal device sends the N times of control information to the second terminal device, and at least one of the N times of control information is on the first subchannel, or the first resource pool, or The first sub-channel, or the first resource pool, or the first dedicated resource sent on the first dedicated resource is determined according to the first BWP.
The method according to claim 8 or 9, wherein the sending, by the first terminal device, N times of control information to the second terminal device comprises:

The first terminal device sends control information K times on a second BWP, and sends control information N-K times on the first BWP, where K is a positive integer less than or equal to N;

The control information sent at least once in the N times of control information on the first subchannel, or the first resource pool, or the first dedicated resource includes:

The control information of at least one of the K times of control information is sent on the first subchannel, or the first resource pool, or the first dedicated resource.
The method according to claim 8, wherein the first resource is a second subchannel on the third BWP, a second dedicated resource on the third BWP, or a second resource pool on the third BWP. One, the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device, and the method includes:

The first terminal device sends the N times of control information to the second terminal device on the third BWP, and at least one of the N times of control information is on the second subchannel, or the The second resource pool, or the second dedicated channel sent by the second dedicated resource, or the second resource pool, or the second dedicated resource is determined according to the first BWP.
The method according to claim 10, wherein the K is determined according to a first time M, wherein the first time M is a processing delay value of the first terminal device, or the first time A time M is a timing value configured by the network device to the first terminal device.
A method for receiving control information, comprising:

The second terminal device receives N times of control information sent by the first terminal device, wherein at least one of the N times of control information includes first instruction information, and the first instruction information is used to activate the first bandwidth part BWP , Where N is a positive integer greater than or equal to 1;

The second terminal device activates the first BWP according to the first instruction information.
The method according to claim 13, wherein the receiving, by the second terminal device, control information sent N times by the first terminal device comprises:

Receiving, by the second terminal device, control information K times on a second BWP and receiving control information N-K times on the first BWP;

At least one of the N times of control information includes first indication information, including:

At least one of the K times of control information includes the first indication information, and K is a positive integer less than or equal to N.
The method according to claim 13, wherein the receiving, by the second terminal device, control information sent N times by the first terminal device comprises:

Receiving, by the second terminal device, the N times of control information sent by the first terminal device at a third BWP, where the third BWP is at least one activated between the first terminal device and the second terminal device One of two BWP.
The method according to claim 14 or 15, wherein the control information further includes resource information of the first data packet, and the method further includes:

The second terminal device receives the first data packet sent X times by the first terminal device, where X is a positive integer.
The method according to claim 16, wherein the receiving, by the second terminal device, the first data packet X sent by the first terminal device comprises:

The second terminal device receives the first data packet Y times on the second BWP, and receives the first data packet X-Y times on the first BWP, and Y is a positive integer less than or equal to X.
The method according to any one of claims 14 to 17, wherein the K times of control information includes resource information of the first data packet of the Y times; the K times of control information or the NK The secondary control information includes resource information of the first data packet XY times.
The method according to any one of claims 14 to 18, wherein the K is determined according to a first time M, wherein the first time M is a processing delay of the first terminal device Value, or the first time M is a timing value configured by the network device to the first terminal device.
A method for receiving control information, comprising:

The second terminal device receives N times of control information sent by the first terminal device, wherein at least one of the N times of control information is received on the first resource, and N is a positive integer greater than or equal to 1. ;

The second terminal device determines to activate a first bandwidth part BWP according to the first resource.
The method according to claim 20, wherein at least one of the N times of control information is sent on the first resource and is also used to deactivate a second BWP, and the first resource is the second resource. One of a first subchannel on a second BWP, a first resource pool on the second BWP, or a first dedicated resource on the second BWP, the method includes:

Receiving, by the second terminal device, the N times of control information sent by the first terminal device, and at least one of the N times of control information is on the first subchannel or the first resource pool Or received on the first dedicated resource, determine the first BWP according to the first subchannel, or the first resource pool, or the first dedicated resource.
The method according to claim 20, wherein the receiving, by the second terminal device, N times of control information sent by the first terminal device comprises:

Receiving, by the second terminal device, K times of control information sent by the first terminal device on the second BWP, and receiving N-K times of control information on the first BWP, where K is a positive integer less than or equal to N;

The control information received at least once in the N times of control information on the first subchannel, or the first resource pool, or the first dedicated resource includes:

The control information of at least one of the K times of control information is received on the first subchannel, or the first resource pool, or the first dedicated resource.
The method according to claim 20, wherein the first resource is a second subchannel on the third BWP, a second resource pool on the third BWP, or a second dedicated resource on the third BWP. One, the third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device, and the method includes:

Receiving, by the second terminal device, N times of control information sent by the first terminal device on the third BWP, and at least one of the N times of control information is on the second subchannel, or The second resource pool, or received on the second dedicated resource, determines the first BWP according to the second subchannel, or the second resource pool, or the second dedicated resource.
The method according to claim 22, wherein the K is determined according to a first time M, wherein the first time M is a processing delay value of the first terminal device, or the first time A time M is a timing value configured by the network device to the first terminal device.
A device for sending control information is characterized in that it includes:

A processor, configured to determine a first bandwidth part BWP;

A transceiver, configured to send control information to the second terminal device N times, at least one of the N times of control information includes first indication information, wherein the first indication information is used to activate the first bandwidth part BWP , N is a positive integer greater than or equal to 1.
The apparatus according to claim 25, wherein the transceiver is specifically configured to:

Sending control information K times on the second BWP, and sending control information N-K times on the first BWP;

At least one of the N times of control information includes first indication information, including:

At least one of the K times of control information includes the first indication information, and K is a positive integer less than or equal to N.
The apparatus according to claim 25, wherein the transceiver is specifically configured to:

Sending the N control information to a second terminal device on a third BWP, where the third BWP is one of at least two BWPs that have been activated between the device and the second terminal device.
The device according to any one of claims 25 to 27, wherein the control information further includes resource information of a first data packet, and the transceiver is further configured to:

Sending the first data packet X times to the second terminal device, where X is a positive integer.
The apparatus according to claim 28, wherein the transceiver is further configured to:

Send the first data packet Y times on the second BWP, and send the first data packet X-Y times on the first BWP, where Y is a positive integer less than or equal to X.
The device according to any one of claims 26 to 29, wherein the K times of control information includes resource information of the first data packet Y times; the K times of control information or the NK times of control The information includes resource information of the first data packet XY times.
The apparatus according to any one of claims 26 to 30, wherein the K is determined according to a first time M, wherein the first time M is a processing delay of the first terminal device Value, or the first time M is a timing value configured by the network device to the first terminal device.
A device for sending control information is characterized in that it includes:

A processor, configured to determine a first bandwidth part BWP;

A transceiver for sending N times of control information to the second terminal device, wherein at least one of the N times of control information is sent on the first resource, and N is a positive integer greater than or equal to 1 , The first resource is determined according to the first BWP.
The device according to claim 32, wherein at least one of the N control information is sent on the first resource and is further used to deactivate a second BWP, and the first resource is the second resource. One of the first subchannel on the second BWP, the first resource pool on the second BWP, or the first dedicated resource on the second BWP, the transceiver is specifically configured to:

Sending control information N times to the second terminal device, at least one of the N control information is sent on the first subchannel, or the first resource pool, or the first dedicated resource , The first subchannel, or the first resource pool, or the first dedicated resource is determined according to the first BWP.
The apparatus according to claim 32 or 33, wherein the transceiver is specifically configured to:

Sending control information K times on the second BWP, and sending control information N-K times on the first BWP, where K is a positive integer less than or equal to N;

The control information sent at least once in the N times of control information on the first subchannel, or the first resource pool, or the first dedicated resource includes:

The control information of at least one of the K times of control information is sent on the first subchannel, or the first resource pool, or the first dedicated resource.
The apparatus according to claim 32, wherein the first resource is a second subchannel on the third BWP, a second dedicated resource on the third BWP, or a second dedicated resource pool on the third BWP The third BWP is one of at least two BWPs that have been activated between the first terminal device and the second terminal device, and the transceiver is specifically configured to:

Sending N times of control information to the second terminal device on the third BWP, at least one of the N times of control information is on the second subchannel, or the second resource pool, or the The second subchannel, or the second resource pool, or the second dedicated resource sent on a second dedicated resource is determined according to the first BWP.
The apparatus according to claim 34, wherein the K is determined according to a first time M, wherein the first time M is a processing delay value of the first terminal device or the network A timing value configured by the device to the first terminal device.
A device for receiving control information, comprising:

A transceiver for receiving N times of control information sent by a first terminal device, wherein at least one of the N times of control information includes first indication information, and the first indication information is used to activate the first bandwidth part BWP, where N is a positive integer greater than or equal to 1;

A processor, configured to activate the first BWP according to the first instruction information.
The apparatus according to claim 37, wherein the transceiver is specifically configured to:

The second BWP receives the control information K times, and receives the N-K control information on the first BWP;

At least one of the N times of control information includes first indication information, including:

At least one of the K times of control information includes the first indication information, and K is a positive integer less than or equal to N.
The apparatus according to claim 37, wherein the transceiver is specifically configured to:

Receiving the control information N times in a third BWP, where the third BWP is one of at least two BWPs that have been activated between the first terminal device and the device.
The apparatus according to any one of claims 37 to 39, wherein the control information further includes resource information of a first data packet, and the transceiver is further configured to:

Receiving the first data packet X times sent by the first terminal device, where X is a positive integer.
The apparatus according to claim 40, wherein the transceiver is specifically configured to:

Receiving the first data packet Y times on the second BWP, and receiving the first data packet X-Y times on the first BWP, Y is a positive integer less than or equal to X.
The device according to any one of claims 38 to 41, wherein the K times of control information includes resource information of the first data packet Y times; the K times of control information or the NK times of control The information includes resource information of the first data packet XY times.
The apparatus according to any one of claims 38 to 41, wherein the K is determined according to a first time M, wherein the first time M is a processing delay of the first terminal device Value or a timing value configured by the network device to the first terminal device.
A device for receiving control information, comprising:

A transceiver, configured to receive N times of control information sent by the first terminal device, at least one of the N times of control information is received on the first resource, and N is a positive integer greater than or equal to 1;

A processor, configured to determine to activate the first bandwidth part BWP according to the first resource.
The apparatus according to claim 44, wherein at least one of the N control information is sent on the first resource and is also used to deactivate a second BWP, and the first resource is the second resource. One of the first subchannel on the second BWP, the first resource pool on the second BWP, or the first dedicated resource on the second BWP, the transceiver is specifically configured to:

Receiving the N times of control information sent by the first terminal device, and at least one of the N times of control information is on the first subchannel, or the first resource pool, or the first Received on a dedicated resource, the first BWP is determined according to the first subchannel, or the first resource pool, or the first dedicated resource.
The apparatus according to claim 44 or 45, wherein the transceiver is specifically configured to:

Receiving K times of control information sent by the first terminal device on the second BWP, and receiving N-K times of control information on the first BWP, where K is a positive integer less than or equal to N;

The control information received at least once in the N times of control information on the first subchannel, or the first resource pool, or the first dedicated resource includes:

The control information of at least one of the K times of control information is received on the first subchannel, or the first resource pool, or the first dedicated resource.
The apparatus according to claim 44, wherein the first resource is a second subchannel on the third BWP, a second resource pool on the third BWP, or a second dedicated resource on the third BWP. One, the third BWP is one of at least two BWPs that have been activated between the first terminal device and the device, and the transceiver is specifically configured to:

Receiving, on the third BWP, N times of control information sent by the first terminal device, and at least one of the N times of control information is on the second subchannel or the second resource pool, Or received on the second dedicated resource, determining the first BWP according to the second subchannel, or the second resource pool, or the second dedicated resource.
The apparatus according to claim 46, wherein the K is determined according to a first time M, wherein the first time M is a processing delay value of the first terminal device or the network A timing value configured by the device to the first terminal device.