WO2019095396A1

WO2019095396A1 - Data transmission node determination method and apparatus

Info

Publication number: WO2019095396A1
Application number: PCT/CN2017/111975
Authority: WO
Inventors: 石小丽; 周国华; 赵雅琪; 吴亮
Original assignee: 华为技术有限公司
Priority date: 2017-11-20
Filing date: 2017-11-20
Publication date: 2019-05-23

Abstract

Provided are a data transmission node determination method and apparatus, wherein same relate to the technical field of wireless communications, and are used for improving the communication quality of a terminal device in multiple cells. The solution comprises: a terminal device determining that a first network access device that a first cell in a first cell group belongs to is a data transmission node, wherein the first cell group comprises multiple cells; and the terminal device sending uplink information on an uplink resource shared by the multiple cells, wherein the uplink information is used for indicating the data transmission node of the terminal device. The solution is applicable to a scenario where a terminal device moves from one cell to another cell in a first cell group.

Description

Data transmission node determining method and device

Technical field

The embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a data transmission node determining method and apparatus.

Background technique

Drones, referred to as "unmanned aerial vehicles", drone applications are infiltrating into all aspects of the traditional industry, from simple basic underlying transport functions, carrying different cargo, turning to carry different mission equipment, expanding into aerial photography, In the fields of surveying and mapping, agricultural plant protection, and the future, as an important terminal component of the Internet of Everything, there are three major trends: flight intelligence, transmission bandwidth and functional diversification.

Among them, flight intelligence means that the future drones should be intelligent, not just passive flight of instructions. UAVs should be able to self-determine, perceive airspace changes, and perform actions such as active avoidance and route re-planning through sensors, cameras, network control and other technologies. Transmission broadband means that the future UAV transmission should be broadband. It is required to be able to share the collected data with other devices in real time, cooperate and cooperate to meet the needs of different tasks, and support data similar to the power inspection UAV upstream 250Mbps. Transmission requirements. Functional diversification means that the future drone function should be diversified. In addition to the ability to have line-of-sight flight capability, it also needs to meet the business needs of over-the-horizon flight; in addition to the ability to keep information confidential and anti-interference, avoid business information. Being tampered with, it is also necessary to meet the needs of timely interaction between information and other communication devices, and to coordinate the division of labor.

In line with the future development trend of drones, it is necessary to have a communication network that matches it, and it is necessary to do a good job of low-altitude coverage network protection. For example, the primary task of UAV networking is to realize the communication between UAVs and other communication devices, realizing network control of drones and real-time backhaul of information, pictures, videos, etc. during navigation, and the coverage of low-altitude coverage networks is directly Affect the development process of drone networking applications.

Currently, the 3rd Generation Partnership Project (3GPP) gives a detailed description of the network requirements for UAV networking services. Since drones have different network requirements from existing smart devices (such as mobile phones), when using the network to support drone communication, there are a series of problems, such as multiple coverage on the ground. In the area, the drone can communicate with multiple cells on the ground in the coverage area, but the drone may have frequent handover of the serving cell during the flight in the coverage area, or may face interference from different cells, which may The communication quality of the drone is affected.

Summary of the invention

The present application provides a data transmission node determining method and apparatus for improving communication quality of a terminal device in multiple cells.

In a first aspect, the present application provides a data transmission node determining method, including: determining, by a terminal device, a first network access device to which a first cell in a first cell group belongs is a data transmission node, where the first cell group includes multiple The terminal device sends uplink information on uplink resources shared by multiple cells, and the uplink information is used to indicate a data transmission node of the terminal device.

The present application provides a data transmission node determining method, where a first cell group is determined by a terminal device. The first network access device to which the cell belongs is a data transmission node, and sends uplink information on the uplink resource shared by the first cell group, so that after receiving the uplink information, the first network access device can determine that it is data transmission. a node, such that the terminal device can perform data transmission between the first network access device and the first cell. Sending the uplink information through the shared uplink resource can achieve the effect similar to the terminal device broadcasting to the network access device, reducing the delay of the notification, and facilitating each network access device to take appropriate measures to reduce interference.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the uplink information includes a first identifier of the first cell and a second identifier of the terminal device, and optionally, the second identifier of the terminal device is used by The terminal device is identified in the first cell group. By carrying the first identifier of the first cell in the uplink information, the first network access device can determine that the first network access device is the data transmission node of the terminal device after receiving the uplink information.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the uplink information is a first sequence, the first sequence is determined by the first identifier of the first cell, The second identity of the terminal device is determined.

With reference to the first aspect to the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the uplink information is further used to indicate that the second network access device to which the second cell belongs stops the data. The second network access device is a data transmission node of the terminal device before determining that the first network access device is a data transmission node. When the terminal device further determines that the first network access device is the data transmission node, the terminal device may prevent the first network access device from being stopped by instructing the second network access device to stop the data transmission. The quality of communication between terminal devices has an impact.

Optionally, the uplink information further includes a first identifier of the second cell.

With reference to the third aspect, the third possible implementation manner of the first aspect, in the fourth possible implementation manner of the first aspect, the uplink information includes the first information, where the first information is used to indicate that the first network is connected The incoming device is determined to be a data transfer node. By carrying the first information in the uplink information, the first network access device can determine that the first network access device is the data transmission node of the terminal device after receiving the uplink information.

With reference to the first aspect to the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the uplink information further includes the second information, where the second information is used to indicate the second network connection The incoming device stops the data transfer. When the terminal device further determines that the first network access device is a data transmission node, the terminal device can prevent the communication quality between the first network access device and the terminal device by using the second information. Make an impact.

With reference to the first aspect to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the first information carries the first indication information and the second identifier of the terminal device, the first information Using the first identifier of the first cell to be scrambled, the first indication information is used to indicate that the first network access device is determined as the data transmission node; the second information carries the second indication information, and the second identifier of the terminal device, the second The information is used for the first identifier of the second cell to be scrambled, and the second indication information is used to indicate that the second network access device stops the data transmission. The first information of the first cell is used to scramble the first information, so that after each cell in the first cell group receives the first information, each cell may determine whether the first information is sent to the first information according to the first identifier of the first cell. When the first information is not sent to itself, the first information may not be parsed, thereby avoiding waste of resources. In addition, the second information is scrambled by using the first identifier of the second cell, so that the second cell can be avoided. The remaining cells are parsed for the second information.

With reference to the first aspect to the sixth possible implementation of the first aspect, in a seventh possible implementation manner of the foregoing aspect, before the terminal device sends the uplink information on the uplink resource that is shared by the multiple cells, the application provides The method further includes: receiving, by the terminal device, broadcast information that is commonly used by the first cell group, where the broadcast information is used to indicate an uplink resource that is shared by multiple cells. By receiving the shared uplink resource, the terminal device can send the uplink information to the first cell group on the shared uplink resource, which can achieve the effect similar to the terminal device broadcasting to the network access device, thereby reducing the delay of the notification and facilitating. Each network access device takes appropriate measures to reduce interference.

With reference to the first aspect to the seventh possible implementation of the first aspect, in an eighth possible implementation manner of the first aspect, the broadcast information is further used to indicate that the terminal device uses a modulation and demodulation manner shared by the first cell group. Send upstream information. By instructing the terminal device to transmit the modulation and demodulation mode shared by each cell, each cell can correctly demodulate the content of the uplink information sent by the terminal device.

With reference to the first aspect to the seventh possible implementation of the first aspect, in a ninth possible implementation manner of the first aspect, the broadcast information is further used to indicate a dedicated modulation and demodulation mode of each cell of the terminal device, different. The modulation and demodulation mode of the cell is different, and the terminal device sends the uplink information on the uplink resource shared by the multiple cells, and the terminal device sends the uplink on the uplink resource shared by the multiple cells by using the dedicated modulation and demodulation mode of the first cell. information. The terminal device sends the uplink information on the uplink resources shared by the multiple cells in the dedicated modulation and demodulation mode of the first cell, so that the first cell can correctly demodulate the content of the sent uplink information.

With reference to the first aspect to the eighth possible implementation of the first aspect, in a ninth possible implementation manner of the first aspect, the terminal device determines the first network access to which the first cell in the first cell group belongs The device is a data transmission node, and the terminal device receives the third indication information that is sent by the anchor base station to indicate that the first network access device is determined to be the data transmission node, and the terminal device accesses the first network according to the third indication information. The device is determined to be a data transfer node.

With reference to the first aspect to the eighth possible implementation of the first aspect, in a ninth possible implementation manner of the first aspect, the terminal device determines the first network access to which the first cell in the first cell group belongs The device is a data transmission node, and the terminal device determines that the data is received on the resource information corresponding to the first cell, and the terminal device determines the first network access device to which the first cell belongs as the data transmission node.

With reference to the first aspect to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the method provided by the application further includes: receiving, by the terminal device, the first cell sent by the data transmission node The scheduling information is sent by the terminal device on the uplink resource shared by the first cell group, where the scheduling information includes a location of the scheduling resource, and the scheduling information is used to indicate that the cell other than the first cell in the multiple cells is on the scheduling resource. Keep silent. By sending the scheduling information, the network access device to which other cells belong can be kept silent in the scheduling resource at the first network access device, thereby avoiding interference between cells.

With reference to the first aspect to any one of the tenth possible implementation manners of the first aspect, in the eleventh possible implementation manner of the first aspect, the method provided by the application further includes: The node receives data transmitted by the anchor base station, or the terminal device transmits data to the anchor base station through the data transmission node.

Optionally, the anchor base station may send the processed PDCP data packet to the terminal device by using the data transmission node. The following describes the process of the data transmission between the data transmission node and the terminal device by the anchor base station, which can be referred to herein.

Optionally, the anchor base station may send data to the terminal device by using a dedicated downlink resource of the cell corresponding to the data transmission node, or send data to the terminal device by using a common downlink resource that is commonly used for multiple cells, or the terminal is configured. The data transmission node sends data to the anchor base station on the uplink resource shared by the multiple cells, or sends data to the anchor base station on the dedicated uplink resource of the cell corresponding to the data transmission node. This will prevent data quality from being affected.

In a second aspect, the present application provides a data transmission node determining method, including: receiving, by a terminal device, broadcast information commonly used for a first cell group, where the first cell group includes multiple cells, and the broadcast information is used to indicate multiple cells. a dedicated uplink resource of each cell; the terminal device sends the uplink information on the dedicated uplink resource of the first cell in the first cell group, where the uplink information is used to indicate that the data transmission node of the terminal device is the first network to which the first cell belongs. Access device. Inter-cell interference can be reduced by dividing dedicated uplink resources for multiple cells. In addition, the transmission of the cell identification information in the air interface can also be reduced.

For example, the content of the uplink information can be referred to the description in the foregoing first aspect, and details are not described herein again.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the broadcast information is further used to indicate a modulation and demodulation manner in which the terminal device sends the uplink information, where the modulation and demodulation manners of the different cells are the same.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the broadcast information is further used to indicate, to the terminal device, a dedicated modulation and demodulation mode of each cell. Optionally, the modulation and demodulation modes of different cells are different.

With reference to any one of the second aspect to the second possible implementation of the second aspect, in a third possible implementation manner of the second aspect, the terminal device is dedicated to the first cell in the first cell group Before the uplink information is sent on the resource, the application further includes: determining, by the terminal device, that the first network access device to which the first cell in the first cell group belongs is a data transmission node.

Optionally, for the manner in which the terminal device determines that the first network access device is a data transmission node, refer to the description of the foregoing first aspect, and details are not described herein again.

With reference to any one of the second aspect to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the broadcast information is further used to indicate an uplink resource that is shared by multiple cells, The application further includes: the terminal device receiving the scheduling information of the first cell sent by the data transmission node; the terminal device transmitting the scheduling information on the uplink resource shared by the first cell group; wherein the scheduling information includes the location of the scheduling resource, and the scheduling information is used by the A cell other than the first cell indicating a plurality of cells remains silent on the scheduling resource.

With reference to the second aspect, the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the terminal device receives the data sent by the anchor base station by using the first network access device Or, the terminal device sends data to the anchor base station by using the first network access device.

In a third aspect, the present application provides a data transmission node determining method, including: determining, by a network access device, that a first network access device to which a first cell belongs in a first cell group is a target data transmission node of a terminal device, first The cell group includes a plurality of cells, and the plurality of cells include the first cell; the network access device sends a first indication to the first network access device, where the first network access device is the target data transmission node of the terminal device, The interface between the network access devices realizes the notification of the selection of the data transmission node, which can save valuable air interface resources.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the method provided by the application further includes: the network access device sends a second indication to the terminal device by using the source data transmission node, where the second indication is used to indicate The first network access device is a target data transmission node of the terminal device, where the source data transmission node is a data transmission node before the terminal device.

In conjunction with the third aspect or the first possible implementation of the third aspect, the second possible aspect of the third aspect In an implementation manner, the method provided by the application further includes: the network access device sends a third indication to the source data transmission node, where the third indication is used to indicate that the source data transmission node stops the data transmission.

With reference to any one of the third aspect to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the method provided by the application further includes: the network access device passes the target data The transmitting node sends data to the terminal device, or the network access device receives the data sent by the terminal device through the target data transmission node.

In a fourth aspect, a data transmission method provided by the present application includes: receiving, by a terminal device, scheduling information of a first cell of a data transmission node from a data transmission node; and transmitting, by the terminal device, scheduling information on an uplink resource shared by the first cell group; The first cell group includes a plurality of cells, and the multiple cells include a first cell, and the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cells other than the first cell in the multiple cells remain silent on the scheduling resource. By broadcasting the scheduling information by the terminal device, other cells can be kept silent at the corresponding resource locations, thereby reducing interference to the air interface transmission of the terminal device.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the method further includes: the terminal device receives the data sent by the anchor base station by using the data transmission node, or the terminal device sends the data to the anchor base station by using the data transmission node.

In a fifth aspect, the application provides a data transmission method, including: a data transmission node sends scheduling information of a first cell of a data transmission node to a network access device in a first cell group; and the data transmission node sends data according to the scheduling information; The first cell group includes a plurality of cells, and the multiple cells include the first cell, and the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cells other than the first cell of the multiple cells remain silent on the scheduling resources. The interface between the data transmission node and other network access devices sends scheduling information, which can keep other cells silent at the corresponding resource locations, and reduce interference to the air interface transmission of the terminal. In addition, you can save resources.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the method provided by the present application further includes: the data transmission node receives the data sent by the anchor base station, and the data transmission node sends the data to the terminal device, or The data transmission node receives the data sent by the terminal device, and the data transmission node sends the data sent by the terminal device to the anchor base station.

Correspondingly, in a sixth aspect, the present application provides a data transmission node determining apparatus, where the data transmission node determining apparatus can implement the data transmission node determining method described in any one of the first aspect to the first aspect. For example, the data transmission node determining means may be a terminal device or a chip disposed in the terminal device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

In a sixth aspect, the data transmission node determining apparatus includes: a determining unit, configured to determine that the first network access device to which the first cell in the first cell group belongs is a data transmission node, and the first cell group includes multiple cells And a sending unit, configured to send uplink information on an uplink resource shared by the multiple cells, where the uplink information is used to indicate a data transmission node of the terminal device.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the uplink information includes a first identifier of the first cell and a second identifier of the terminal device.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the uplink information is a first sequence, the first sequence is determined by the first identifier of the first cell, The second identity of the terminal device is determined.

With reference to any one of the second possible aspect of the sixth aspect to the sixth aspect, in a third possible implementation manner of the sixth aspect, the uplink information is further used to indicate the second cell in the first cell group The associated second network access device stops data transmission, and the second network access device is a data transmission node of the terminal device before determining that the first network access device is a data transmission node.

With reference to any one of the sixth aspect to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the uplink information includes the first information, where the first information is used to indicate that The first network access device is determined to be a data transmission node.

With reference to any one of the sixth aspect to the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, the uplink information further includes the second information, where the second information is used to indicate The second network access device stops data transmission.

With reference to any one of the sixth aspect to the sixth possible implementation manner of the sixth aspect, in a seventh possible implementation manner of the sixth aspect, the first information carries the first indication information and the second information of the terminal device The first information is scrambled by using the first identifier of the first cell, where the first indication information is used to indicate that the first network access device is determined to be a data transmission node, and the second information is used to carry the second indication information and the second information of the terminal device. And identifying, the second information is scrambled by using the first identifier of the second cell, where the second indication information is used to indicate that the second network access device stops data transmission.

With reference to any one of the sixth aspect to the seventh possible implementation manner of the sixth aspect, in the eighth possible implementation manner of the sixth aspect, the apparatus provided by the application further includes: a receiving unit, configured to receive Commonly used for the broadcast information of the first cell group, the broadcast information is used to indicate uplink resources shared by multiple cells.

With reference to any one of the sixth aspect to the eighth possible implementation manner of the sixth aspect, in a ninth possible implementation manner of the sixth aspect, the broadcast information is further used to indicate that the terminal device sends the uplink information The modulation mode, in which the modulation and demodulation methods of different cells are the same.

With reference to any one of the sixth aspect to the ninth possible implementation manner of the sixth aspect, in a tenth possible implementation manner of the sixth aspect, the receiving unit is configured to receive, by the anchor The first network access device determines the third indication information of the data transmission node, and the determining unit is configured to determine, according to the third indication information, the first network access device as the data transmission node.

With reference to any one of the sixth aspect to the tenth possible implementation manner of the sixth aspect, in the eleventh possible implementation manner of the sixth aspect, the determining unit is configured to determine resource information corresponding to the first cell There is data transmission; and the first network access device to which the first cell belongs is determined as a data transmission node.

With reference to any one of the eleventh possible implementation manners of the sixth aspect to the sixth aspect, in a twelfth possible implementation manner of the sixth aspect, the receiving unit is further configured to receive, by the data transmission node, a scheduling information of the first cell, where the sending unit is configured to send the scheduling information on the uplink resource shared by the first cell group, where the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate the first cell in the multiple cells. The cell remains silent on the scheduling resources.

With reference to any one of the twelfth possible implementation manners of the sixth aspect to the sixth aspect, in a thirteenth possible implementation manner of the sixth aspect, the receiving unit is further configured to receive the anchor by using the data transmission node The data sent by the base station, the sending unit, is further configured to send data to the anchor base station through the data transmission node.

In a seventh aspect, the data transfer node determining means can include at least one processor and a communication interface. The processor is configured to support the data transfer node determining device to perform any of the first aspect to the first aspect described above In the method described, the data transmission node determines the related operations of message processing or control performed on the device side. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission node determining device to perform the message reception on the data transmission node determining device side in the method described in any one of the first aspect to the first aspect And related operations sent. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

Correspondingly, in an eighth aspect, the present application provides a data transmission node determining apparatus, where the data transmission node determining apparatus can implement the data transmission node determining method described in any one of the third aspect to the third aspect. For example, the data transmission node determining device may be a network access device or a chip disposed in the network access device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

In an eighth aspect, the data transmission node determining apparatus includes: a determining unit, configured to determine that the first network access device to which the first cell belongs in the first cell group is a target data transmission node of the terminal device, where the first cell group includes multiple a cell, the multiple cells include a first cell, and the sending unit is configured to send a first indication to the first network access device, where the first indication is used to indicate that the first network access device is a target data transmission node of the terminal device.

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect, the sending unit is further configured to: send, by the source data transmission node, a second indication to the terminal device, where the second indication is used to indicate the first network access device It is a target data transmission node of the terminal device, where the source data transmission node is a data transmission node before the terminal device.

With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, in a second possible implementation manner of the eighth aspect, the sending unit is further configured to send, to the source data transmission node, a third indication, the third The indication is used to instruct the source data transmission node to stop data transmission.

In combination with the second possible implementation manner of the eighth aspect to the eighth aspect, in a third possible implementation manner of the eighth aspect, the sending unit is further configured to send, by using the target data transmission node, the terminal device The data, or the receiving unit, is further configured to receive data sent by the terminal device through the target data transmission node.

In a ninth aspect, the data transmission node determining means can include at least one processor and a communication interface. The processor is configured to support the data transmission node determining means to perform the related operations of message processing or control performed on the data transmission node determining device side in the method described in any one of the above third to third aspects. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission node determining device to perform the message reception on the data transmission node determining device side in the method described in any one of the above third to third aspects. And related operations sent. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

Correspondingly, in a tenth aspect, the present application provides a data transmission node determining apparatus, where the data transmission node determining apparatus can implement the data transmission node determining method described in any one of the second aspect to the second aspect. For example, the data transmission node determining means may be a terminal device or a chip disposed in the terminal device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

In a tenth aspect, the apparatus includes: a receiving unit, configured to receive broadcast information that is commonly used for a first cell group, where the first cell group includes multiple cells, and the broadcast information is used to indicate a dedicated uplink of each of the multiple cells. a sending unit, configured to send uplink information on a dedicated uplink resource of the first cell in the first cell group, where the uplink information is used to indicate that the data transmission node of the terminal device is the first network access device to which the first cell belongs .

With reference to the tenth aspect, in a first possible implementation manner of the tenth aspect, the broadcast information is further used to indicate a modulation and demodulation manner in which the terminal device sends the uplink information, where the modulation and demodulation manners of the different cells are the same.

With reference to the tenth aspect, in a second possible implementation manner of the tenth aspect, the broadcast information is further used to indicate, to the terminal device, a dedicated modulation and demodulation mode of each cell. Optionally, the modulation and demodulation modes of different cells are different.

With reference to any one of the tenth aspect to the second possible implementation manner of the second aspect, in a third possible implementation manner of the tenth aspect, the device, further comprising: a determining unit, configured to determine the first cell The first network access device to which the first cell in the group belongs is a data transmission node.

With reference to any one of the tenth aspect to the third possible implementation manner of the tenth aspect, in a fourth possible implementation manner of the tenth aspect, the broadcast information is further used to indicate an uplink resource shared by multiple cells, The application further includes: a receiving unit, configured to receive scheduling information of the first cell sent by the data transmission node, and a sending unit, configured to send scheduling information on the uplink resource shared by the first cell group, where the scheduling information includes The location of the scheduling resource is used to indicate that the cell other than the first cell in the multiple cells remains silent on the scheduling resource.

With reference to any one of the tenth aspect to the fourth possible implementation manner of the tenth aspect, in a fifth possible implementation manner of the tenth aspect, the sending unit is further configured to send data to the anchor base station by using the data transmission node Or, the receiving unit is further configured to receive data sent by the anchor base station by using the data transmission node.

In an eleventh aspect, the data transfer node determining means can include at least one processor and a communication interface. The processor is configured to support the data transfer node determining means to perform the related operations of message processing or control performed on the data transfer node determining device side in the method described in any one of the second aspect to the second aspect. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission node determining device to perform the message reception on the data transmission node determining device side in the method described in any one of the second aspect to the second aspect And related operations sent. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

According to a twelfth aspect, the present application provides a data transmission apparatus, which can implement the data transmission apparatus described in any one of the fourth aspect to the fourth aspect. For example, the data transmission node device may be a terminal device or a chip disposed in the terminal device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

In a twelfth aspect, the data transmission apparatus includes: a receiving unit, configured to receive scheduling information of a first cell of the data transmission node from the data transmission node; and a sending unit, configured to send scheduling information on an uplink resource shared by the first cell group The first cell group includes a plurality of cells, the plurality of cells include the first cell, and the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cells other than the first cell of the multiple cells remain silent on the scheduling resource. .

In a possible design, the receiving unit is further configured to receive data sent by the anchor base station through the data transmission node, or a sending unit, and is further configured to send data to the anchor base station by using the data transmission node.

In a thirteenth aspect, the data transmission device can include at least one processor and a communication interface. The processor is equipped The operation of the message processing or control performed on the data transmission device side in the method described in any one of the above fourth to fourth aspects is supported by the data transmission device. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform the method of receiving and transmitting a message on the data transmission device side in the method described in any one of the above fourth to fourth aspects. operating. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

In a fourteenth aspect, the present application provides a data transmission apparatus that can implement the data transmission apparatus described in any one of the fifth aspect to the fifth aspect. For example, the data transmission node device may be a network access device or a chip disposed in the network access device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

Specifically, the data transmission apparatus includes: a sending unit, configured to send, to the network access device in the first cell group, scheduling information of the first cell of the data transmission node; and configured to send according to the scheduling information Data, where the first cell group includes a plurality of cells, the plurality of cells include the first cell, and the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cells other than the first cell of the plurality of cells are maintained on the scheduling resource. Silent.

In a fifteenth aspect, the data transmission device can include at least one processor and a communication interface. The processor is configured to support the data transmission device to perform the related operations of message processing or control performed on the data transmission device side in the method described in any one of the fifth to fifth aspects above. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform the method of receiving and transmitting a message on the data transmission device side in the method described in any one of the fifth to fifth aspects. operating. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

In a sixteenth aspect, the present application provides a data transmission node determining method, including: receiving, by a first network access device, uplink information sent by a terminal device on an uplink resource shared by multiple cells, where the uplink information is used to indicate the terminal device Data transfer node. The first network access device determines the data transmission node as the terminal device according to the uplink information.

Optionally, the content of the uplink information related to the fifteenth aspect may be referred to the content of the uplink information in the first aspect, and details are not described herein again.

In conjunction with the sixteenth aspect, in a first possible implementation manner of the sixteenth aspect, the first network access device receives the uplink information sent by the terminal device on the uplink resource that is shared by the multiple cells, including: the first network access The inbound device receives the uplink information sent by the terminal device in the dedicated modulation and demodulation mode of the first cell or the uplink information sent by the receiving terminal device in the modulation and demodulation mode shared by the multiple cells on the uplink resource shared by the multiple cells.

With reference to the sixteenth aspect or the first possible implementation manner of the sixteenth aspect, in a second possible implementation manner of the fifteenth aspect, the method provided by the application further includes: the first network access device to the terminal The device sends the scheduling information of the first cell, where the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cell other than the first cell of the multiple cells remains silent on the scheduling resource.

In combination with the sixteenth aspect or the first possible implementation of the sixteenth aspect, the second aspect of the fifteenth aspect In a possible implementation manner, the method provided by the application further includes: receiving, by the first network access device, data sent by the network access device, and sending data sent by the network access device to the terminal device. Alternatively, the first network access device receives the data sent by the terminal device, and sends the data sent by the terminal device to the network access device.

In a seventeenth aspect, the present application provides a data transmission node determining method, including: a network access device generates broadcast information commonly used for a first cell group, where the first cell group includes multiple cells, and the broadcast information is used to indicate multiple The uplink resource shared by the cell, the network access device sends the broadcast information, and the shared uplink resource is allocated to the multiple cells, so that the effect similar to the terminal device broadcasting to the network access device can be achieved, and the delay of the notification is reduced. It is convenient for each network access device to take appropriate measures to reduce interference.

In conjunction with the seventeenth aspect, in a first possible implementation manner of the seventeenth aspect, the broadcast information is further used to indicate a modulation and demodulation manner in which the terminal device sends the uplink information, where the modulation and demodulation manners of the different cells are the same.

In conjunction with the seventeenth aspect, in a second possible implementation manner of the seventeenth aspect, the broadcast information is further used to indicate, to the terminal device, a dedicated modulation and demodulation mode of each of the plurality of cells.

In an eighteenth aspect, the present application provides a data transmission node determining method, including: a network access device generating broadcast information, the first cell group includes a plurality of cells, and the broadcast information is used to indicate each of the multiple cells. A dedicated uplink resource, the network access device sends broadcast information, and by dividing dedicated uplink resources for multiple cells, interference between cells can be reduced. In addition, the transmission of the cell identification information in the air interface can also be reduced.

In conjunction with the eighteenth aspect, in a first possible implementation manner of the eighteenth aspect, the broadcast information is further used to indicate a modulation and demodulation manner in which the terminal device sends the uplink information, where the modulation and demodulation manners of the different cells are the same.

In conjunction with the eighteenth aspect, in a second possible implementation manner of the eighteenth aspect, the broadcast information is further used to indicate, to the terminal device, a dedicated modulation and demodulation mode of each of the plurality of cells.

In conjunction with the eighteenth aspect, in a second possible implementation of the eighteenth aspect, the broadcast information is further used to indicate a dedicated uplink resource of each cell. Inter-cell interference can be reduced by indicating dedicated uplink resources for each cell. In addition, the transmission of the cell identification information in the air interface can also be reduced.

In a nineteenth aspect, the present application provides a data transmission node determining method, including: receiving, by a first network access device, a first data access node that is sent by a network access device to indicate that the first network access device is a target data transmission node of the terminal device In an indication, the first network access device determines, according to the first indication, a target data transmission node of the terminal device.

With the nineteenth aspect, in a first possible implementation manner of the nineteenth aspect, the first network access device further receives data sent by the terminal device, and sends data sent by the terminal device to the network access device, or The first network access device receives the data sent by the network access device, and sends the data sent by the network access device to the terminal device.

In a twentieth aspect, the present application provides a data transmission node determining method, including: receiving, by a source data transmission node, a second indication sent by an anchor base station, where the second indication is used to indicate that the first network access device is a terminal device The target data transmission node, wherein the source data transmission node is a data transmission node before the terminal device. The terminal device sends the uplink information by using the uplink resource of the first cell group or the uplink information of the first cell, and the first cell group includes multiple cells, where the uplink information is used to indicate that the first network access device is The target data transmission node of the terminal device.

With reference to the twentieth aspect, in a first possible implementation manner of the twentieth aspect, the terminal device sends the uplink information by using the uplink resource of the first cell group or sends the uplink information by using the dedicated uplink resource of the first cell, The method provided by the application further includes: receiving, by the terminal device, broadcast information commonly used for the first cell group, the wide The broadcast information is used to indicate uplink resources shared by multiple cells, or dedicated uplink resources of each cell.

With reference to the twentieth aspect or the first possible implementation manner of the twentieth aspect, in a second possible implementation manner of the twentieth aspect, the broadcast information is further used to indicate a dedicated modulation and demodulation mode of each cell, Or a total of modulation and demodulation methods for multiple cells.

With reference to any one of the twentieth aspect to the first possible implementation manner of the twentieth aspect, in a third possible implementation manner of the twentieth aspect, the terminal device sends the data to the anchor base station by using the target data transmission node Or the terminal device receives the data sent by the anchor base station through the target data transmission node.

In a twenty-first aspect, the present application provides a data transmission method, including: receiving, by a network access device, scheduling information of a first cell of a data transmission node sent by a data transmission node; wherein, the first cell group includes multiple cells, and The cell includes a first cell, and the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cells other than the first cell of the plurality of cells remain silent on the scheduling resource, and the network access device is in the scheduling resource at the data transmission node. Keep silent when sending data on the location. The interface between the network access device and other network access devices sends scheduling information, which enables other cells to remain silent at the corresponding resource locations, reducing interference to the air interface transmission of the terminal. In addition, you can save resources.

According to a twenty-second aspect, the present application provides a data transmission apparatus that can implement the data transmission apparatus described in any one of the sixteenth to sixteenth aspects. For example, the data transmission node device may be a network access device or a chip disposed in the network access device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

The apparatus includes: a receiving unit, configured to receive uplink information sent by the terminal device on an uplink resource shared by the multiple cells, where the uplink information is used to indicate a data transmission node of the terminal device. And a determining unit, configured to determine, according to the uplink information, a data transmission node that is a terminal device, and data between the relay anchor base station and the terminal device.

Optionally, the content of the uplink information related to the twenty-second aspect may refer to the content of the uplink information in the first aspect, which is not limited in this application.

With reference to the twenty-second aspect, in a first possible implementation manner of the twenty-second aspect, the receiving unit is specifically configured to: receive, by using, a dedicated modulation solution of the first cell by the terminal device on an uplink resource shared by multiple cells The uplink information sent by the modulation mode or the uplink information sent by the terminal device in a modulation and demodulation manner shared by multiple cells.

With reference to the twenty-second aspect or the first possible implementation manner of the twenty-second aspect, in a second possible implementation manner of the twenty-first aspect, the apparatus provided by the application further includes: a sending unit, configured to: The scheduling information of the first cell is sent to the terminal device, where the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cell other than the first cell of the multiple cells remains silent on the scheduling resource.

In a twenty-third aspect, the data transmission device can include at least one processor and a communication interface. The processor is configured to support the data transmission device to perform the related operations of message processing or control performed on the data transmission device side in the method described in any one of the sixteenth to sixteenth aspects. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform message reception and transmission on the data transmission device side in the method described in any one of the sixteenth to sixteenth aspects. Related operations. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

In a twenty-fourth aspect, the present application provides a data transmission node determining apparatus, where the data transmission apparatus can be implemented The data transmission device described in any one of the seventeenth to seventeenth aspects. For example, the data transmission node device may be a network access device or a chip disposed in the network access device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

The data transmission node determining apparatus includes: a generating unit, configured to generate broadcast information that is commonly used for the first cell group, where the first cell group includes multiple cells, and the broadcast information is used to indicate uplink resources shared by the multiple cells, A sending unit, configured to send broadcast information.

With reference to the twenty-fifth aspect, in a first possible implementation manner of the twenty-fifth aspect, the broadcast information is further used to indicate a modulation and demodulation manner in which the terminal device sends the uplink information, where the modulation and demodulation manners of the different cells are the same. .

With reference to the twenty-fifth aspect, in a second possible implementation manner of the twenty-fifth aspect, the broadcast information is further used to indicate, to the terminal device, a dedicated modulation and demodulation mode of each of the multiple cells.

In a twenty-sixth aspect, the data transmission device can include at least one processor and a communication interface. The processor is configured to support the data transmission device to perform the related operations of message processing or control performed on the data transmission device side in the method described in any one of the seventeenth to seventeenth aspects. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform message reception and transmission on the data transmission device side in the method described in any one of the seventeenth to seventeenth aspects. Related operations. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

In a twenty-seventh aspect, the present application provides a data transmission node determining apparatus, which can implement the data transmission apparatus described in any one of the eighteenth to eighteenth aspects. For example, the data transmission node device may be a network access device or a chip disposed in the network access device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

The data transmission node determining apparatus includes: a generating unit, configured to generate broadcast information, where the first cell group includes a plurality of cells, where the broadcast information is used to indicate a dedicated uplink resource of each of the multiple cells, and the sending unit is used by Send broadcast information.

With reference to the twenty-seventh aspect, in a first possible implementation manner of the twenty-seventh aspect, the broadcast information is further used to indicate a modulation and demodulation manner in which the terminal device sends the uplink information, where the modulation and demodulation modes of the different cells are the same. .

In conjunction with the twenty-seventh aspect, in a second possible implementation manner of the twenty-seventh aspect, the broadcast information is further used to indicate, to the terminal device, a dedicated modulation and demodulation manner of each of the plurality of cells.

In conjunction with the twenty-seventh aspect, in a second possible implementation of the twenty-seventh aspect, the broadcast information is further used to indicate a dedicated uplink resource of each cell. Inter-cell interference can be reduced by indicating dedicated uplink resources for each cell. In addition, the transmission of the cell identification information in the air interface can also be reduced.

In a twenty-eighth aspect, the data transmission device can include at least one processor and a communication interface. The processor is configured to support the data transmission device to perform the related operations of message processing or control performed on the data transmission device side in the method described in any one of the eighteenth to eighteenth aspects. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform message reception and transmission on the data transmission device side in the method described in any one of the eighteenth to eighteenth aspects. Related operations. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining device may further include a bus, where the memory, The transceiver circuit and the at least one processor are interconnected by a line.

In a twenty-ninth aspect, the present application provides a data transmission node determining apparatus, which can implement the data transmission apparatus described in any one of the nineteenth to nineteenth aspects. For example, the data transmission node device may be a network access device or a chip disposed in the network access device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

In a twenty-ninth aspect, the present application provides a data transmission node determining apparatus, including: a receiving unit, configured to receive, by a network access device, a first data transmission node that is used to indicate that the first network access device is a terminal device And an determining unit, configured to determine, according to the first indication, a target data transmission node of the terminal device.

In conjunction with the twenty-ninth aspect, in a first possible implementation of the twenty-ninth aspect, the receiving unit is further configured to receive data sent by the terminal device, where the apparatus further includes: a sending unit, configured to: The sent data is sent to the network access device, or the receiving unit is configured to receive data sent by the network access device, and the sending unit is configured to send the data sent by the network access device to the terminal device.

In a thirtieth aspect, the data transmission device can include at least one processor and a communication interface. The processor is configured to support the data transmission device to perform the related operations of message processing or control performed on the data transmission device side in the method described in any one of the nineteenth to nineteenth aspects. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform message reception and transmission on the data transmission device side in the method described in any one of the nineteenth to nineteenth aspects. Related operations. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

In a thirty-first aspect, the present application provides a data transmission node determining apparatus, which can implement the data transmission apparatus described in any one of the twentieth aspect to the twentieth aspect. For example, the data transmission node device may be a terminal device or a chip disposed in the terminal device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

The data transmission node determining apparatus includes: a receiving unit, configured to receive, by the source data transmission node, a second indication sent by the anchor base station, where the second indication is used to indicate that the first network access device is a target data transmission node of the terminal device, The source data transmission node is a data transmission node before the terminal device. And a sending unit, configured to send uplink information by using an uplink resource that shares the first cell group, or send uplink information by using a dedicated uplink resource of the first cell, where the first cell group includes multiple cells.

In conjunction with the thirty-first aspect, in a first possible implementation manner of the foregoing aspect, the receiving unit is further configured to receive broadcast information that is commonly used by the first cell group, where the broadcast information is used to indicate that multiple cells are shared. Uplink resources, or dedicated uplink resources for each cell.

With reference to the thirty-first aspect or the first possible implementation manner of the thirty-first aspect, in a second possible implementation manner of the thirty-first aspect, the broadcast information is further used to indicate a dedicated modulation solution of each cell. Tuning mode, or common to the modulation and demodulation mode of multiple cells.

In a thirty-second aspect, the data transmission device can include at least one processor and a communication interface. The processor is configured to support the data transmission device to perform the related operations of message processing or control performed on the data transmission device side in the method described in any one of the above-described twentieth to twentieth aspects. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform any of the above twentieth to twentieth aspects A related operation of message reception and transmission is performed on the data transmission device side in a described method. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

In a thirty-third aspect, the data transmission device can implement the data transmission device described in any one of the twenty-first aspect to the twenty-first aspect. For example, the data transmission device may be a network access device or a chip disposed in the network access device. The above method can be implemented by software, hardware, or by executing corresponding software through hardware.

The present application provides a data transmission apparatus, including: a receiving unit, configured to receive scheduling information of a first cell of a data transmission node sent by a data transmission node, where the first cell group includes multiple cells, and the multiple cells include the first a cell, the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate that the cells other than the first cell of the plurality of cells remain silent on the scheduling resource, and the processing unit is configured to send, at the location of the scheduling resource, the data transmission node Keep silent while the data is in progress. The interface between the network access device and other network access devices sends scheduling information, which enables other cells to remain silent at the corresponding resource locations, reducing interference to the air interface transmission of the terminal. In addition, you can save resources.

In a thirty-fourth aspect, the data transmission device can include at least one processor and a communication interface. The processor is configured to support the data transmission device to perform the related operations of message processing or control performed on the data transmission device side in the method described in any one of the twenty-first to twenty-first aspects. The communication interface may be a transceiver circuit, wherein the transceiver circuit is configured to support the data transmission device to perform message reception on the data transmission device side in the method described in any one of the above twenty-first to twenty-first aspects. And related operations sent. Optionally, the apparatus further includes a memory for coupling with the at least one processor, which stores programs (instructions) and data necessary for the device. Optionally, the data transmission node determining apparatus may further include a bus, wherein the memory, the transceiver circuit, and the at least one processor are interconnected by a line.

The present application also provides a computer readable storage medium storing instructions for causing a computer to implement a data transfer node determining method or a data transfer method provided by any of the above designs when the instructions are run on a computer.

The present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to implement a data transfer node determination method or data transfer method provided by any of the above designs.

The present application also provides a computer program that, when run on a computer, causes the computer to implement a data transfer node determination method or data transfer method provided by any of the above designs.

In a thirty-fifth aspect, the present application provides a chip system for use in a terminal device, the chip system including at least one processor and an interface circuit, the interface circuit and the at least one processor are interconnected by a line, and the processor is configured to execute an instruction to execute The method of any one of the first aspect, any one of the twentieth aspect, any one of the second aspect, or the fourth aspect.

In a thirty-sixth aspect, the present application provides a chip system, which is applied to a network access device, where the chip system includes at least one processor and an interface circuit, the interface circuit and the at least one processor are interconnected by a line, and the processor is configured to run the instruction. The method described in any one of the third aspect, the fifth aspect, the sixteenth aspect, the seventeenth aspect, the eighteenth aspect, and the nineteenth aspect.

Optionally, the chip system in this application further includes the at least one memory, where the at least one memory is stored There are instructions stored.

In a thirty-seventh aspect, the present application provides a communication system comprising the terminal device as described in any of the above aspects and the network access device described in any of the above aspects.

In a possible design, the system may further include other devices that interact with the terminal device or the network access device in the solution provided by the embodiment of the present invention.

DRAWINGS

1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

2 is a schematic structural diagram of an access network in an embodiment of the present application;

3 is a second schematic structural diagram of an access network in an embodiment of the present application;

4 is a schematic flowchart 1 of a method for determining a data transmission node according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an example of resource distribution in a first cell group according to an embodiment of the present application;

FIG. 5b is a schematic flowchart 2 of a method for determining a data transmission node according to an embodiment of the present disclosure;

Figure 6 is a schematic diagram 1 of a scenario provided by the present application;

FIG. 7 is a schematic diagram 2 of a scenario provided by the present application;

Figure 8 is a schematic diagram 3 of a scenario provided by the present application;

FIG. 9 is a schematic diagram 4 of a scenario provided by the present application; FIG.

Figure 10 is a schematic diagram 5 of a scenario provided by the present application;

Figure 11 is a schematic diagram 6 of a scenario provided by the present application;

12 is a schematic structural diagram 1 of a terminal device provided by the present application;

FIG. 13 is a schematic structural diagram 2 of a terminal device provided by the present application; FIG.

FIG. 14 is a schematic structural diagram 3 of a terminal device provided by the present application; FIG.

15 is a schematic structural diagram 1 of a network access device provided by the present application;

16 is a schematic structural diagram 2 of a network access device provided by the present application;

17 is a schematic structural diagram 3 of a network access device provided by the present application;

FIG. 18 is a schematic structural diagram of a chip system provided by the present application.

Detailed ways

The present application provides a data transmission node selection and apparatus for improving communication quality of a terminal device during a plurality of cell movements. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) Terminal equipment, which is a wireless transceiver function, can be deployed on land, indoors or outdoors, handheld or on-board; it can also be deployed on the water (such as ships); it can also be deployed in the air (such as aircraft). , balloons and satellites, etc.). The terminal device is also referred to as a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., and is a voice and/or data connectivity provided to the user. device. For example, the terminal includes a handheld device having a wireless connection function, an in-vehicle device, and the like. Currently, the terminal can be: a mobile phone, a tablet, a laptop, a palmtop, a mobile internet device (MID), a wearable device (such as a smart watch, a smart bracelet, a pedometer, etc.). Vehicle equipment (for example, cars, bicycles, electric vehicles, airplanes, ships, fire Vehicles, high-speed rails, etc., virtual reality (VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, smart home equipment (eg, refrigerators, televisions, air conditioners, electric meters) Etc.), intelligent robots, workshop equipment, wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation safety A wireless terminal in a wireless terminal, a smart terminal in a smart city, or a wireless terminal in a smart home, a flying device (for example, an intelligent robot, a hot air balloon, a drone, an airplane). A possible application scenario of the present application is that the height of the terminal device satisfies a preset condition or the terminal device is in a preset flight state, and the height may be a height of the terminal device relative to the ground, or may be an altitude, or other forms. height. In the present application, for convenience of description, a chip deployed in the above device, or a chip system may also be referred to as a terminal device.

In the present application, for convenience of description, the terminal device can be divided into two categories: (1) a ground terminal device, that is, a terminal device that frequently works on the ground; and (2) a drone device, that is, a terminal that frequently works in the air. device. In the system architecture shown in FIG. 1 , the first terminal device 1021 and the second terminal device 1022 are ground terminal devices, and the third terminal device 1023 is a drone device. The method for selecting a data transmission node provided by the present application can be applied to any type of terminal device. The following mainly describes the unmanned device as an example.

2) The network access device, which is a node in the radio access network, may also be referred to as a base station, a radio access network (RAN) node (or device). Currently, an example of a network access device is: a next generation base station (gNB), for example, a new radio (NR) base station (Node B, NB) or a 5G base station, and a transmission reception point. , TRP), evolved Node B (eNB), radio network controller (RNC), Node B (Node B, NB), base station controller (BSC), base transceiver Base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), or wireless fidelity (Wifi) access point ( Access point, AP), etc.

3) The first cell group, the coverage of multiple cells on the ground (for example, cell 1, cell 2 and cell 3 as described in FIG. 1 below) may be affected by the line of sight (LOS) path. There will be more overlapping coverage, fragmentation coverage and cross-region coverage, which may cause serious interference when the terminal equipment communicates under air coverage, and may also cause frequent handover problems. In order to reduce interference, one of the multiple cells may be formed. The coverage area is divided into a large coverage area. In this embodiment of the present invention, the large coverage area may be referred to as a first cell group, or a virtual cell (Vcell), or a super cell. This application is not limited.

It should be noted that, in the present application, the network access devices to which the multiple cells in the first cell group belong have an ideal backhaul line (ie, an ideal backhaul), or have a non-ideal backhaul. Not limited. The network access devices to which the plurality of cells belong may communicate through an interface, for example, an X2 interface.

4) Anchor base station and data transmission node, the anchor base station in this application may also be referred to as a primary network access device, a primary base station, and an anchor network access device. The data transmission node refers to a network access device other than the anchor base station in the first cell group, and may also be referred to as a secondary base station or a secondary network access device.

The network access device to which the multiple cells in the first cell group belong includes an anchor base station and at least one A data transmission node, wherein the anchor base station is configured to generate broadcast information in the first cell group, and the anchor base station has a data plane and a control plane connection with the core network. For example, in a 4G communication system, an access network is connected to a core network through an S1 interface, and an anchor base station is an access point of an S1 interface node on the access network side. In the 5G communication system, the NG connection is performed between the access network and the core network, and the anchor base station is an access point of the NG connection on the access network side. The anchor base station stores related information of the terminal device, for example, identification information, and the anchor base station may, according to the related information of the terminal device, pass the data or signaling to the data transmission node after receiving the data or signaling sent by the core network to the terminal device. Transfer to the terminal device. For any one of the terminal devices in the first cell group, the anchor base station performs a packet data convergence protocol (PDCP) layer function, and the data transmission node does not perform the PDCP layer function, or the anchor base station can also perform the PDCP layer and the wireless layer. The function of the radio link control (RLC) layer, and the data transmission node may not perform the functions of the PDCP layer or the RLC layer, or the anchor base station may also perform the PDCP layer, the RLC layer, and the media access control (MAC). Layer function, and the data transmission node may not perform the functions of the PDCP layer, the RLC layer, and the MAC layer, or the anchor base station may also perform the functions of the PDCP layer, the RLC layer, the MAC layer, and the physical layer (PHY) layer, and the data transmission The node may not perform the functions of the PDCP layer, the RLC layer, the MAC layer, and the PHY layer. For example, the anchor base station performs the PDCP layer function, and the data transmission node does not perform the PDCP layer function. For the downlink direction, the anchor base station generates a downlink PDCP protocol data unit (PDU), and sends a downlink PDCP to the data transmission node. The PDU, the RLC layer of the data transmission node forwards the received downlink PDCP PDU to the terminal device. For the uplink direction, the data transmission node receives the uplink PDCP PDU sent by the terminal device, and sends the received uplink PDCP PDU to the anchor base station, and the anchor base station processes the received uplink PDCP PDU. The data transmission node in this application has the same function. Can only have the function of data transmission.

Optionally, the data transmission node usually has no data plane and control plane connection with the core network.

A first cell group can serve multiple terminal devices. In a possible implementation manner, a first cell group may have only one anchor base station, and the anchor base station is fixed, and does not change with the location of the terminal device, and all terminal devices in the first cell group can pass the anchor. Base station management. In another possible implementation manner, each terminal device has its own anchor base station within the coverage of the first cell group, so multiple anchor base stations may exist in one first cell group. The anchor base station of the first cell group in the first cell group may be determined when the terminal device initially accesses the first cell group. After the terminal device is normally determined, the anchor station of the terminal device group in the first cell group does not change. In exceptional cases, such as when the anchor base station fails or the load is too large, another network access device can be selected as the anchor base station.

The anchor base station in the present application can be determined in the following manner: (1), when the terminal device can synchronize to the physical cell and read the broadcast information of the multiple physical cells, the terminal device can first access the physical device according to the broadcast information. In the cell A, the terminal device is in a connected state, and the network access device to which the physical cell A belongs can be used as an anchor base station. In addition, the anchor base station can construct the first cell group by using the following rules, and then the terminal device The broadcast information of the first cell group can be read. There is a new synchronization signal in the first cell group (the synchronization information is used for the terminal device to synchronize to each cell in the first cell group), and the network access device to which the multiple cells in the first cell group belong is periodically. If the synchronization signal is sent, the anchor base station may be determined by the mode (2), and the mode (2) is obtained. If the terminal device is in an idle state, the terminal device synchronizes to the first cell group, and the terminal device synchronizes and reads. The broadcast information of the first cell group (the specific content of the broadcast information of the first cell group can be referred to the following description), and the random access resource in the broadcast information is randomly accessed into the first cell group. One cell A. The cell A may be selected by the terminal device according to the signal reference quality parameter of the multiple cells in the first cell group. At this time, the network access device to which the cell A accessed by the terminal device belongs is a data transmission node, that is, Anchoring the base station, wherein the first group of cells may be statically configured.

It should be noted that the terminal device can be synchronized to the physical cell, but the terminal device cannot read the broadcast information of the physical cell, or the physical downlink control channel (PDCCH) of the physical cell has low reliability and reads the physics. The reliability of the broadcast information of the cell is also reduced. In this case, the network access device to which the physical cell belongs needs to send the broadcast information of the first cell group, so that the terminal device synchronizes to the first cell group to read the broadcast of the first cell group. Information is randomly accessed to the first group of cells. Specifically, on the one hand, the broadcast information of the first cell group may be sent on an existing master information block (MIB) resource, for example, an RB (resource block) is vacant on the existing MIB. Terminal devices (eg, drone devices) are used, and other terminal devices other than drone devices are not used. On the other hand, if the PDCCH has low reliability, the broadcast information of the first cell group may be transmitted in a new system information broadcast (SIB), and the newly added SIB is a specific terminal device. The broadcast information of the first cell group is directly sent in the dedicated signaling of the network access device to which the physical cell belongs, such as an RRC message.

5) The definition of the shared resource and the dedicated resource. In the present application, the transmission resource of the first cell group is divided into a shared resource and a dedicated resource, and the shared resource is used when the terminal device and each cell jointly send and receive signals, and the dedicated resource is used for the terminal device. Used when transmitting and receiving signals with a single cell in the first cell group. Since the anchor base station and the remaining network access devices in the first cell group may have a cooperative delay, the shared resource may be used to jointly send the multiple network access devices after the multiple network access devices coordinate the sending time. For example, a common channel such as a synchronization channel or a broadcast channel is transmitted; and dedicated resources can be used to separately transmit some user data with high delay requirements by a single cell.

6) Keep silent can have the following understandings: a), no data is sent; or, b), transmitting data at low power; the low power refers to power less than a preset threshold, which can be defined by a standard, Either negotiation is performed between the respective network access devices, or c), only the reference signal is transmitted.

The first cell group in the present application may be determined by the terminal device, and may also be notified by the anchor base station and then notified to the terminal device, which is not limited in this application.

Specifically, the first cell group in this application can be constructed by the following rules:

Rule 1 (static), the first cell group is determined in advance according to a preset rule. For example, the preset rule may be a predetermined first cell group according to a location relationship of a plurality of physical cells (Pcells), for example, cell 1 The cell 2 and the cell 3 are three cells adjacent to each other. Therefore, it can be determined that the cell 1, the cell 2, and the cell 3 constitute a first cell group. In this case, the cells included in the first cell group are usually fixed and do not change. The number of the cells included in the first cell group may be the same or different, and is not limited. In the present application, if the flight path of the terminal device is predetermined, the first cell group may be determined in advance according to the flight path of the terminal device and the location relationship of the physical cell.

Rule 2 (dynamic), the cells in which the reference signal receiving power (RSRP) strength of the plurality of cells meets the preset RSRP requirement are determined as the first cell group, or the path loss in the plurality of cells meets the preset path loss. The required cell is determined to be the first cell group. In this case, the first cell group may be determined by the terminal device, or multiple cells may feed back the uplink measurement result to the serving cell serving the terminal device, and the serving cell selects several cells (for example, the communication with the terminal device may be selected. a number of cells with good signal quality) A first group of cells. In this case, the cells included in the first cell group may dynamically change with time and terminal equipment.

Rule 3 (semi-static), first, a second cell group is determined according to the above rule 1, and second, the terminal device accesses a network access device A in the second cell group, and then the network access device A is The downlink measurement reported by the terminal device adjusts the cell in the second cell group. Specifically, the network access device A may add a cell whose interference strength meets the preset requirement to the second cell group according to the signal quality parameter of the neighboring cell of the terminal device, to form the first cell group, or the second cell group. A cell whose internal interference strength does not meet the preset requirement is removed from the second cell group to form a first cell group. However, in general, the rate of the adjustment process may be determined by the network access device, and the network access device may Notifying the terminal device that is finally formed to the terminal device.

Regardless of whether the first cell group is pre-configured or constructed by the anchor base station for the terminal device, after the first cell group is determined, the first cell group usually sends broadcast information, and the broadcast information may be used by the first cell group. The network access device to which the cell belongs is sent, or the broadcast information may be jointly sent by multiple cells in the first cell group. When jointly transmitting, the reliability of the broadcast information received by the terminal device may be improved.

The joint sending means that the network access device to which each cell in the first cell group belongs simultaneously transmits broadcast information.

Because the broadcast information broadcast by the network access device to which each cell belongs may be the same content, the network access devices to which the multiple cells belong may coordinate the control channel resource information of the broadcast information and the content of the broadcast information.

The time-frequency resource location of the new control channel in which the broadcast information is sent by different cells is different, so that the interference of the control channel between the cells can be avoided, and the content of the broadcast information negotiated by the network access device to which the cell belongs can be, for example, Iot. Information, RS power, physical random access channel (PRACH resource, etc.).

Specifically, the network access device to which the multiple cells belong may be coordinated through the X2 interface, and may be in the existing X2 message, such as an X2 setup, or may be interacted on the new X2 interface. Not limited.

The broadcast information may be sent by using an existing broadcast channel, or may be sent by other existing technologies, and is not limited herein. In this way, the terminal device can access any member cell in the first cell group according to the received broadcast information. Specifically, the broadcast information includes related information of multiple cells in the first cell group.

In addition, in order to ensure that the network access devices to which each cell in the first cell group belongs are simultaneously broadcast, the network access devices to which each cell belongs need to coordinate the first resource information that is sent by the broadcast information, for example, each cell belongs to The first resource information of the network access device transmitting the broadcast information is the same.

Specifically, the information about the multiple cells included in the broadcast information is obtained in two ways:

The first method: the operation management and maintenance (OAM) is configured for the network access device to which the multiple cells belong, or other pre-configured methods, which are not limited in this application.

Manner 2: The network access device to which the multiple cells belong is sent to the anchor base station, and may be sent through an interface between the network access device and the anchor base station to which the multiple cells belong, such as an X2 interface, or It is sent by using other existing interfaces, and the application is not limited. Taking the anchor base station as the network access device a as an example, the network access device a can generate the wide message by receiving the first message sent by the network access device b and the network access device c respectively. The first information sent by the network access device b may include related information of the cell b1, and the first message sent by the network access device c may include related information of the cell c1, the cell c2, and the cell c3. If the plurality of cells include the area a1, the cell b1, the cell c1, and the cell c3, the first message sent by the network access device c may only include related information of the cell c1 and the cell c3, and does not include the correlation of the cell c2. information.

In this application, three or more network access devices may also exchange related information of each cell, so that all three devices can obtain related information of multiple cells.

Specifically, the broadcast information includes resource configuration information and cell information of each cell in the first cell group, and the use of the broadcast information may also have multiple possible scenarios. Specifically, the use of the broadcast information may be any one of the following or any The content is combined and determined: (1) Reference signal (RS) resource information of each cell. (2) Random access resource information of each cell. (3) Control channel resource information of each cell. (4) Information of each cell, such as an identifier of a cell (such as a physical cell identifier PCI). (5) The first resource information sent by the downlink broadcast message of each cell. (6) The terminal device sends the second resource information of the uplink information to each cell. (7) A modulation and demodulation method in which the terminal device transmits uplink information. (8) Interference over thermal (IoT) information of each cell. (9) The transmission power of the reference signal of each cell. (10) Weighted value of the interference noise Iot of each cell. (11) Weighted value of path loss for each cell. (12) Data channel resource information of each cell. (13), the protocol layer configuration of each cell, the protocol layer configuration includes a configuration of at least one layer of the PDCP layer, the RLC layer, the MAC layer, and the PHY layer. Specifically, the configuration content may refer to the existing long term evolution (Long term evolution, LTE) dual connectivity (DC), which is not described in the embodiment of the present invention.

The above several kinds of information are separately introduced separately.

(a) Reference signal (RS) resource information of each cell

The format is: multiple cell identifiers corresponding to orthogonal reference signal resources, as shown in Table 1; wherein the cell identifier may be a physical cell identifier (PCI) or a global cell identification (CGI), etc. The information of each cell can be uniquely indicated, or can be a different identifier pre-assigned to each cell, and the identifier correspondence table is broadcast to the terminal device.

Table 1: Example of reference signal resource information of a plurality of cells included in broadcast information

分组序号Packet number	参考信号资源信息Reference signal resource information
小区标识1Cell ID 1	参考信号资源1Reference signal resource 1
小区标识2Cell ID 2	参考信号资源2Reference signal resource 2
小区标识3 Cell ID 3	参考信号资源3 Reference signal resource 3

In the present application, the reference signal may be a known signal sequence, which is sent in the determined resource information (for example, a time-frequency resource location), or may be a subset or a complete set selected from the original reference signals of the respective cells on the ground. It is only necessary to ensure that the reference signals of the respective cells are orthogonal, and the orthogonal relationship may be orthogonal in the time domain, the frequency domain or the code domain. The terminal device can determine which cell has better signal quality by detecting the strength of the reference signal, and select a network access device to which the cell whose signal quality meets the requirement belongs as a data transmission node.

(b) Random access resource information of each cell

The format is: multiple cell identifiers correspond to orthogonal random access resources, as shown in Table 2.

Table 2: Example of random access resource information for each cell included in the broadcast information

Packet number

Random access resource information

小区标识1Cell ID 1	随机接入资源1Random access resource 1
小区标识2Cell ID 2	随机接入资源2Random access resource 2
小区标识3 Cell ID 3	随机接入资源3 Random access resource 3

In this application, the random access resource may be different from the original random access resource of each cell on the ground, or may be a subset or a complete set selected from the original random access resources of each cell on the ground, and only need to guarantee multiple The random access resources of the cell are orthogonal. Further, the random access resources may be grouped based on different time domains, may be grouped based on different frequency domains, or may be grouped based on different code domains. The intersection relationship may be orthogonal in the time domain, the frequency domain, or the code domain. The terminal device can access different cells according to random access resources of different cells.

(c) Control channel resource information of each cell

The format is: multiple cell identifiers correspond to orthogonal control channel resources, as shown in Table 3.

Table 3: Example of control channel resource information of a plurality of cells included in broadcast information

分组序号Packet number	控制信道资源信息Control channel resource information
小区标识1Cell ID 1	控制信道资源1Control channel resource 1
小区标识2Cell ID 2	控制信道资源2Control channel resource 2
小区标识3 Cell ID 3	控制信道资源3 Control channel resource 3

In the present application, the control channel resources of each cell are orthogonal, that is, there is no interference between them. The orthogonal relationship may be orthogonal in the time domain or in the frequency domain. The terminal device may acquire the first time-frequency resource location of the new control channel of the cell according to the control channel resource information corresponding to the different cell, thereby receiving and demodulating the control information of the cell at the location of the new control channel, and further receiving the The data scheduling and control of the cell, wherein the first time-frequency resource locations of the new control channels of different cells in the multiple cells are different. It should be noted that, the configuration of the time-frequency resource location of the new control channel of each cell may be configured by the anchor base station, and then the other cells in the first cell group are notified through the X2 interface, or other centralized node configurations, which are not limited in the embodiment of the present invention. . For example, the control channel resource is a downlink control channel resource.

(d), the transmit power of the reference signal of each cell

The format is: the transmission power of the actual reference signal corresponding to each cell identifier, as shown in Table 4.

The transmit power of the reference signal may be the transmit power of a signal such as a cell-specific reference signal (CRS) or a CSI-RS.

Table 4: Example of transmission power of reference signals of a plurality of cells included in broadcast information

分组序号Packet number	小区参考信号的发送功率Cell reference signal transmission power
小区标识1Cell ID 1	发射功率值1Transmit power value 1
小区标识2Cell ID 2	发射功率值2Transmit power value 2
小区标识3 Cell ID 3	发射功率值3Transmit power value 3

In this application, the terminal device can estimate the path loss of each cell (hereinafter referred to as path loss) by using the transmission power of the reference signal of each cell and the reference signal received power (RSRP) measured by the downlink. A network access device to which one cell belongs may be selected from a plurality of cells as a data transmission node.

(e) First resource information sent by the downlink broadcast message of each cell

The format is: the first resource information of the downlink broadcast message corresponding to each cell identifier, as shown in Table 5.

The first resource information may be a resource location in a time domain, a frequency domain, a code domain, and an airspace, and also a real-time resource location.

Optionally, in one aspect, the foregoing downlink broadcast message is sent on a non-MBSFN subframe.

Optionally, on the other hand, the foregoing downlink broadcast message may also be sent on an MBSFN subframe.

If the downlink broadcast message is sent on a multicast broadcast single frequency network or multicase broadcast single frequency network (MBSFN) subframe, the terminal device may use an MBSFN reference signal or a demodulation reference signal (demodulation) a reference signal (DMRS) sequence to parse the downlink broadcast message, wherein the DMRS sequence is generated according to a ZC (zadoff-chu) root sequence, specifically:

The DMRS sequence may be bound according to the identifier of the virtual cell, or may be bound according to a time-frequency resource location (eg, a subframe number) sent by the downlink broadcast message of the virtual cell, or the base station may be used to indicate the DMRS sequence. Not limited.

Table 5: Example of first resource information in which each cell included in the broadcast information transmits a downlink broadcast message

分组序号Packet number	小区下行广播消息发送的第一资源信息First resource information sent by the cell downlink broadcast message
小区标识1Cell ID 1	资源信息1Resource information 1
小区标识2Cell ID 2	资源信息1Resource information 1
小区标识3 Cell ID 3	资源信息1Resource information 1

In this application, after receiving the downlink broadcast message, the terminal device may determine the resource information 1 of each cell according to the identifier of each cell, and receive the downlink broadcast message sent by each cell on the resource information 1 corresponding to each cell.

(f) the second resource information that the terminal device sends the uplink information to each cell

For example, the uplink information may be sent through a physical uplink shared channel (PUSCH)/physical uplink control channel (PUCCH). The first way is to use a second resource (for example, a second uplink resource) on the existing PUCCH/PUSCH resource for use by a specific terminal device (for example, a drone terminal), each of the first cell group. The cell shares the second uplink resource. When the terminal device sends the uplink information or the uplink control information, the second uplink resource can be sent on the second uplink resource, and all the cells in the first cell group can obtain the uplink information or the uplink control information on the second uplink resource. In the first mode, the first cell group needs to broadcast the second uplink resource that the terminal device sends the uplink information through the PUSCH/PUCCH to the terminal device, where the second uplink resource of each cell is the same, and the second uplink resource may be It is defined by the standard, and may also be negotiated by the network access device to which each cell belongs. This application does not limit this.

Optionally, in the second mode, when the uplink information is sent through the PUSCH/PUCCH, N is added to the existing PUCCH/PUSCH resource (N is an integer greater than or equal to 1, and the value of N is included with the first cell group. The number of cells is related to the orthogonal third resource used by the terminal device, or a second resource is vacated for use by a specific terminal device (eg, a drone terminal), and is divided on a specific second resource. A plurality of orthogonal third resources, that is, resources used by the terminal device to send uplink information to each cell in the first cell group are different, and are orthogonal, that is, dedicated uplink resources of the cell. Therefore, the terminal device sends an uplink message to a certain cell. The information may be sent on the third resource corresponding to the specific cell in the selected first cell group, and the specific cell may parse and acquire the uplink information. The format for this method is as follows:

The format is: the third resource corresponding to each cell identifier that sends uplink information, as shown in Table 6.

Table 6: Example of a third resource in which each cell included in the broadcast information transmits uplink information

分组序号Packet number	小区上行信息发送的第三资源Third resource for transmitting cell uplink information
小区标识1Cell ID 1	资源信息3-1Resource information 3-1
小区标识2Cell ID 2	资源信息3-2Resource Information 3-2
小区标识3 Cell ID 3	资源信息3-3Resource Information 3-3

In this application, after receiving the downlink broadcast message, the terminal device may determine the second resource information of each cell according to the identifier of each cell, and send the uplink information on the second resource information corresponding to each cell.

(g) Modulation and demodulation method for the terminal device to transmit uplink information

The modem mode is used by the network access device to which each cell belongs to demodulate the terminal device to send uplink information, such as the uplink information content sent by the demodulation terminal through the PUSCH/PUCCH.

Optionally, on the one hand, the network access device to which the cell belongs to the first cell group is the same as the modulation and coding scheme (MCS, modulation and coding strategy) sent by the terminal device. or,

Optionally, on the other hand, the MCS that is sent by the network access device to which the cell belongs to the first cell group is different from the MCS, and the modulation and demodulation mode may be notified by the anchor base station to notify the rest of the first cell group. The network access device to which the cell belongs may also be directly notified by the respective cells in the first cell group to be notified to the anchor base station, or directly defined by the standard, which is not limited in the embodiment of the present invention.

The following describes an example in which the MCS sent by the network access device to which the cell belongs to the terminal device is different. The format is as follows:

The format is: the modulation and demodulation mode for transmitting uplink information corresponding to each cell identifier, as shown in Table 7.

Table 7: Example of modulation and demodulation mode in which each cell included in the broadcast information transmits uplink information

分组序号Packet number	小区上行信息发送的调制解调方式Modulation and demodulation method for transmitting uplink information of a cell
小区标识1Cell ID 1	调制解调方式1Mode 1
小区标识2Cell ID 2	调制解调方式2Modem 2
小区标识3 Cell ID 3	调制解调方式3 Modem 3

In this application, after receiving the downlink broadcast message, the terminal device in Table 7 can determine the modulation and demodulation mode of each cell according to the identifier of each cell, and send the uplink information in the modulation and demodulation mode corresponding to each cell.

(h) IoT information for each cell

The format is: the actual IoT value corresponding to each cell identifier, or a certain transform value based on the IoT value, as shown in Table 8.

Table 8: Examples of IoT values and weighting values of multiple cells included in broadcast information

分组序号Packet number	IoT值IoT value	加权值Weighted value
小区标识1Cell ID 1	IoT值1IoT value 1	加权值1Weighted value 1
小区标识2Cell ID 2	IoT值2IoT value 2	加权值2Weighted value 2
小区标识3 Cell ID 3	IoT值3 IoT value 3	加权值3 Weighted value 3

In the present application, the terminal device can adjust the uplink transmit power by using the IoT value of each cell, thereby reducing uplink interference to the ground terminal equipment, and determining each cell according to the IoT value of each cell and the corresponding weighting value. The path loss weighting value is a data transmission node selected by the network access device to which the cell with the lowest path loss weight value belongs from the network access devices to which the plurality of cells belong according to the path loss weight value of each cell.

Specifically, the manner in which the terminal device acquires the signal quality parameters of the multiple cells included in the first cell group is as follows: the terminal device according to the broadcast information sent by the first cell group, the broadcast information includes at least information about each cell, for example, each The reference signal resource information of the cells, the terminal device may measure the signal quality and signal strength of each cell according to the reference signal resource information of each cell, such as Reference Signal Receiving Power (RSRP) and reference signal receiving quality. (reference signal received quality, RSRQ) to obtain signal quality parameters of multiple cells.

The terms "first", "second", and the like in this application are only used to distinguish different objects, and the order is not limited. For example, the first network access device and the second network access device are only for distinguishing different base stations, and are not limited in their order.

The term “and/or” in the present application is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B. In addition, the character "/" in the present application generally indicates that the context of the context is an "or" relationship. In addition, at least one of A, B, and C may indicate that A exists separately, B exists separately, C exists separately, There are cases where A and B exist, A and C exist, B and C exist simultaneously, A, B and C, and A and A exist at the same time.

It should be noted that, in the present application, the words "exemplary" or "such as" are used to mean an example, illustration, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the words "exemplary" or "such as" is intended to present the concepts in a particular manner.

The present application will be specifically described below in conjunction with the drawings.

The communication method in the present application can be applied to multiple system architectures. FIG. 1 is a schematic diagram of a system architecture applicable to the present application. As shown in FIG. 1, the system architecture includes one or more network access devices (such as the first network access device 1011, the second network access device 1012, and the third network access device 1013 shown in FIG. 1). One or more terminal devices (such as the first terminal device 1021, the second terminal device 1022, and the third terminal device 1023 shown in FIG. 1). The cell that the network access device covers may be one or more cells, which is not specifically limited in this application.

Exemplarily, as shown in FIG. 1 , the cell covered by the first network access device 1011 is the cell 1 , the cell covered by the second network access device 1012 is the cell 2, and the cell covered by the third network access device 1013 is the cell. 3. It can be understood that the present application only takes one network access device to cover one cell as an example for description.

The first terminal device 1021, the second terminal device 1022, and the third terminal device 1023 move to any one of the first network access device 1011, the second network access device 1012, and the third network access device 1013. When the cell is covered, the network access device can access the network access device and perform information transmission with the accessed network access device. For example, when the first terminal device 1021 moves to the cell covered by the second network access device 1012, the device can be connected. The second network access device 1012 is entered.

It should be noted that the communication system shown in FIG. 1 may include fourth generation (4th generation, 4G) communication. System, fifth generation (5th generation, 5G) communication system or various communication systems in the future.

2 and 3 are diagrams showing the architecture of two possible applicable access networks in a 5G communication system according to an embodiment of the present application. As shown in FIG. 2, in a 5G communication system, the network access device is a gNB, the anchor base station may include one or more gNBs, and one or more TRPs may exist under one gNB.

Since the future access network can be implemented by using a cloud radio access network (C-RAN) architecture, one possible way is to divide the protocol stack architecture and functions of the traditional base station into two parts, one part is called data. The data unit (DU), another part is called the control unit (CU). As shown in FIG. 3, in a 5G communication system, there may be a CU-data unit (DU) separation scenario. In the CU-DU separation scenario, the CU is an S1 access point on the access network side. The downlink data transmission process is: after receiving the downlink data sent by the core network, the CU distributes the downlink data to the DU, and the DU sends the received downlink data to the terminal device. The uplink data transmission process is: the terminal device sends the uplink data to the DU, and the DU sends the received uplink data to the CU. After receiving the uplink data sent by the DU, the CU sends the received uplink data to the core network. In the CU-DU separation scenario, it can be considered that the CU exists in the anchor base station, and the DU exists in the data transmission node.

Taking the terminal device as an unmanned device as an example, when the UAV device takes off vertically from the ground, it first enters the main lobe coverage of a cell; then, as the UAV device moves out, the UAV device gradually flies. The main lobe coverage of the cell is accessed to the side lobe coverage of the neighboring cell. Therefore, the UAV device will frequently switch the serving cell within a first cell group, for example, as shown in FIG. With the movement of the drone device, the serving cell of the drone device switches from cell 1 to cell 2. However, the prior art does not involve the process of switching between the UAV devices in the first cell group. If the handover process of the UAV device in the first cell group follows the handover process of the LTE system cell, that is, the control Both the face and the data plane are switched, which causes the drone device to switch frequently in the air, which not only increases the probability of handover failure, but also increases the delay caused by the handover.

Based on this, the present application provides a method for selecting a data transmission node, in which a terminal device has an anchor base station in a first cell group, and the anchor base station has a connection with a control plane and a data plane of the core network, when the terminal device When one cell A in the first cell group moves to another cell B, in general, the other cell B can provide better service for the terminal device than other cells, that is, the terminal device is in the other cell B. The communication quality is often higher than the communication quality in other cells. Therefore, the terminal device can update the data transmission node from the network access device to which the cell A belongs to the network access device to which the cell B belongs, because the data transmission node and the core network There is no data plane and control plane connection between them. Therefore, when the terminal equipment enters another cell from one cell to another, the problem of control plane and data plane switching caused by frequent handover of the network access equipment can be avoided, thereby improving communication quality. .

The following describes the flow of the data transmission node determination method provided by the present application, as shown in FIG. 4, including:

Step S101: The terminal device determines that the first network access device to which the first cell belongs in the first cell group is a data transmission node.

Specifically, step S101 can be implemented in at least two ways:

First, S1011: The terminal device acquires signal quality parameters of multiple cells included in the first cell group. S1012: The terminal device selects, according to the signal quality parameter of each cell, the first network access device to which the first cell belongs from the network access device to which the multiple cells belong, as the data transmission node. The first network access device is configured to support the terminal device to perform data transmission with the first cell, where the first cell is any one of the multiple cells.

The signal quality parameter of the foregoing cell may be used to represent the radio signal strength of the cell. For example, the cell signal quality cell may be a Reference Signal Received Power (RSRP) of the cell. The manner of obtaining the signal quality parameter of the cell in the embodiment of the present application may be, but is not limited to, including any one of the following two manners.

In this application, the network access devices to which the multiple cells belong may have one or more. For example, there may be three network access devices, which are the network access device a, the network access device b, and the network access device c. The cell covered by any one of the three network access devices may be one or more. For example, the cell covered by the network access device a includes the cell a1 and the cell a2, and the cell covered by the network access device b is The cell b1, the cell covered by the network access device c includes a cell c1, a cell c2, and a cell c3. In this case, the multiple cells include a cell a1, a cell a2, a cell b1, a cell c1, a cell c2, and a cell c3.

In the above example, multiple cells include three cells covered by three network access devices. In this application, multiple cells may also include only a part of cells covered by three network access devices. For example, multiple cells include cell a1. a cell b1, a cell c1, a cell c2, and a cell c3. At this time, the plurality of cells do not include the cell a2 covered by the network access device a, and for example, the plurality of cells include the cell a1, the cell b1, the cell c1, and the cell c3. At the time, the plurality of cells do not include the cell a2 covered by the network access device a and the cell c2 covered by the network access device c.

Optionally, step S1012 can be implemented by using the following selection manner 1, selection mode 2, or selection mode 3:

Selection mode 1. The terminal device uses a network access device to which the cell whose signal quality parameter (for example, RSRP) meets the preset requirement belongs as a data transmission node.

Specifically, the terminal device determines, as the data transmission node, a network access device (for example, a first network access device) to which the cell with the highest RSRP or the cell with the strongest signal strength belongs.

In the second mode, the terminal device can use the network access device to which the cell with the smallest path loss in multiple cells belongs as the data transmission node.

The third mode, the terminal device uses the network access device to which the cell with the lowest path loss weight is the data transmission node.

Specifically, the terminal device may obtain the path loss weight value of each cell by acquiring the path loss of the multiple cells and the uplink IoT of each cell by using the following: (the uplink IoT of each cell may be indicated according to the identifier of the cell, such that The IoT of each cell and the weighting value of each cell may be determined according to each cell identifier according to Table 4, and the first weighting value of the path loss corresponding to each cell according to the path loss of each cell by the terminal device, The uplink IoT of each cell and the second weighting value of the corresponding uplink IoT of each cell determine the path loss weight value of each cell.

Specifically, the terminal device may calculate a path loss weighting value of each cell according to the formula W=a*pathloss+b*IoT, where W represents a path loss weighting value, pathloss represents a path loss, a represents a first weighting value, and b represents a second weighting value, where a and b may be standard defined values, such as fixed values, or may be configured by the anchor base station to be received by the terminal device or the terminal device through dedicated signaling (eg, RRC signaling). The broadcast information carries the first weighting value and the second weighting value, and the terminal device obtains the first weighting value and the second weighting value of the plurality of cells by analyzing the broadcast information, which is not limited in the embodiment of the present invention.

In this application, the terminal device obtains the path loss of each cell in multiple manners. For example, the terminal device obtains the path loss of each cell according to the formula pathloss=RS transmit power of the neighboring cell-RSRP. Here, the terminal device can pass Obtain the RS transmit power of the neighboring area as follows:

A possible implementation manner is that the terminal device acquires the RS transmit power of each cell according to the identifier of each cell from the broadcast information in combination with Table 4. A further possible implementation manner is that after the terminal device accesses the anchor base station, the terminal device receives the RS transmit power of the neighboring cell sent by the anchor base station by using dedicated signaling (such as an RRC message), and the RS transmit power of the neighboring cell is The anchor base station is obtained through an X2 interface with the neighboring cell.

The manner in which the terminal device obtains the transmit power of the uplink IoT and/or the reference signal may be various. For example, as shown in Table 4 and Table 8, the broadcast information includes the uplink IoT and/or Or the transmit power of the reference signal, the terminal device may parse the received broadcast information to obtain the transmit power of the uplink IoT and/or the reference signal, and another possible implementation manner is: after the terminal device accesses the anchor base station, the receiving anchor The transmit power of the uplink IoT and/or the reference signal sent by the base station through the dedicated signaling, where the transmit power of the uplink IoT and/or the reference signal is obtained by the anchor base station through the X2 interface with the neighboring cell, which is not limited in this application. .

Optionally, it should be noted that, in a scenario in which the terminal device randomly accesses the first cell group by synchronizing the first cell group and reading the broadcast information of the first cell group, the terminal device sends the first cell group to the first cell group. The process of initiating a random access by the member cell may be: S1. The terminal device selects a data transmission node by measuring signal quality parameters of each cell in the first cell group, and selects a network access device to which the member cell with the best signal quality belongs as a data transmission. a node, and selecting a random access channel (RACH) resource corresponding to the member cell (wherein the random access channel resource of each cell may be indicated by an identifier corresponding to each cell, and each of the broadcast information is included For the format of the random access resource information of the cell, refer to the above table 1); S2, the terminal device initiates a message (Message, Msg) 1, and the Msg1 includes the identification information of the selected member cell (or the identification information of the data transmission node), After receiving the Msg1, the network access device of the member cell in a cell group parses and identifies whether it is a data transmission node. If the Msg2 is returned to the terminal device, the subsequent process can refer to existing LTE message procedure, not repeated embodiment embodiment of the present invention.

Optionally, the step S1012 in the present application may also be implemented in the following manners 4 or 5: the terminal device selects, from the plurality of cells, the first network access device to which the first cell belongs as the data transmission node.

The method 4: The terminal device determines that the signal quality parameter of the first cell exceeds the preset quality threshold, and the terminal device determines that the first network access device to which the first cell belongs is the data transmission node.

The fifth mode, the terminal device determines that the number of signal quality reports of the first cell exceeds the preset number of times, and the terminal device determines that the first network access device to which the first cell belongs is the data transmission node.

Second, after the anchor base station selects the data transmission node for the terminal device, the data transmission node is notified to the terminal device.

Specifically, the anchor base station selects the data transmission node for the terminal device, and the terminal device sends the measurement report to the anchor base station, where the measurement report includes at least the signal quality parameter of each cell, and the anchor base station determines the first network according to the signal quality parameter of each cell. The access device is a data transmission node. After determining the data transmission node, the anchor base station sends first indication information to the terminal device, where the first indication information is used to indicate that the first network access device is determined to be a data transmission node. The terminal device determines, according to the first indication information, that the first network access device is a data transmission node.

The foregoing first indication information is used to indicate that determining the first network access device as a data transmission node may be understood as first indication information for indicating that the first network access device is used as a data transmission node.

That is, step S101 can be specifically implemented in the following manner: S1013, the terminal device receives the sending by the anchor base station The first indication information is used to indicate that the data transmission node of the terminal device is the first network access device. S1014. The terminal device determines, according to the first indication information, the first network access device as a data transmission node.

The process of selecting a data transmission node by the anchor base station for the terminal device may refer to the process of selecting the data transmission node according to the signal quality parameter of the cell in the terminal device described in the foregoing embodiment, and details are not described herein again.

Specifically, the first indication information may be sent by the first network access device to the terminal device by using a dedicated signaling RRC message.

Optionally, the anchor base station may also send the first indication information to the terminal device by using downlink control information (DCI) or a media access control control element (MAC CE).

Specifically, the content of the first indication information may be multiple, for example, the first indication information includes identification information (eg, PCI) of the second cell and/or control channel resource information of the second cell (eg, enhanced The location information of the physical downlink control channel (ePDCCH), so that the terminal device can determine the resource information associated with the control channel resource based on the control channel resource information carried in the first indication information. The identifier of the first cell is used to determine the first cell according to the identifier of the first cell, so that the terminal device can determine that the first network access device to which the first cell belongs is a data transmission node.

Third, step S101 can also be implemented in the following manner:

S1015: The terminal device determines that the data is received on the resource information corresponding to the first cell, and the terminal device determines the first network access device to which the first cell belongs as the data transmission node.

Specifically, the terminal device may determine, according to the broadcast information, data channel resource information corresponding to each cell in the first cell group. Specifically, if the terminal device receives data on the data channel resource information of the first cell 1, the terminal device may The first network access device to which a cell belongs is determined as a data transmission node.

It should be noted that the data transmission node in the embodiment of the present invention may be the same network access device as the anchor base station, or may be a different network access device than the anchor base station, when the data transmission node and the anchor base station are not the same network. When accessing the device, the data transmission node and the core network device may have no data plane and control plane, and the data transmission node may be used to forward the data sent by the anchor base station to the terminal device, and may also be used to forward the data of the terminal device to the anchor base station. .

It can be understood that, in the foregoing embodiment, if the terminal device has an anchor base station before the terminal device selects the data transmission node, the transmit power of the uplink IoT and/or the reference signal, the first weight value and the second weight value, The RS transmit power and the like may be obtained from the broadcast information, or may be sent by the anchor base station to the terminal device through dedicated signaling. Exemplarily, if the terminal device does not have an anchor base station before the terminal device selects the data transmission node, the transmit power, the first weight value, the second weight value, and the RS transmit power of the uplink IoT and/or the reference signal may be Obtained from the broadcast information or obtained from the anchor base station after determining the anchor base station.

It should be noted that, in this application, if the terminal device does not have an anchor base station after accessing the first cell group, the terminal device may use the data transmission node determined by the foregoing method as the anchor base station.

The following describes the process in which the terminal device notifies the first network access device itself as a data transmission node after the terminal device determines the data transmission node, or the manner in which the first network access device determines itself as a data transmission node:

It should be noted that, before the terminal device notifies the first network access device that the data transmission node is a process, the terminal device has determined that the first network access device is a data transmission node. The terminal device may determine, by using the terminal device described above, that the first network access device is a data transmission node, or may refer to other The process of the network access device being a data transmission node is not described herein again.

Specifically, the terminal device may notify the first network access device as a data transmission node by using an uplink resource shared by multiple cells, or by using a dedicated uplink resource of the first cell:

In a possible implementation manner, the terminal device is notified by the uplink resource mode shared by the multiple cells: S102A, the terminal device sends uplink information on the uplink resource shared by the multiple cells, where the uplink information is used to indicate the data transmission node of the terminal device. In this way, the network access device to which each cell belongs can determine the uplink information sent by the terminal device on the shared uplink resource.

Optionally, the method provided by the embodiment of the present application, before the terminal device sends the uplink information on the uplink resource shared by the multiple cells, the method further includes: S103: The terminal device receives a broadcast message that is commonly used by the first cell group, where the broadcast message is used by the terminal device. And indicating an uplink resource shared by the first cell group.

As shown in FIG. 5a, FIG. 5a shows an example of distribution of resources in a first cell group, where the first cell group includes cell 1, cell 2, and cell 3, wherein cell 1, cell 2, and cell 3 has a shared uplink resource, for example, the shared uplink resource shown in Figure 5a. The shared uplink resource is used for cell 1, and cell 2 and cell 3 are used when jointly transmitting and receiving signals.

Specifically, the broadcast message includes an identifier of the shared uplink resource, where the identifier of the shared uplink resource is used to identify the shared uplink resource. In this way, the terminal device can determine the uplink resource for sending the uplink information according to the identifier of the shared uplink resource.

Optionally, in an aspect, step S102A in this application may be implemented in the following manner:

S102A1: The terminal device sends the uplink information on the shared uplink resource by using a modulation and demodulation method common to each cell in the first cell group. In this case, the broadcast information further includes: a modulation and demodulation method for instructing the terminal device to send the uplink information, where the modulation and demodulation manners of the different cells are the same. In this case, the network access device to which each cell belongs can parse the content of the uplink information.

Optionally, on the other hand, step S102A in this application may be implemented in the following manner:

S102A2: The terminal device sends uplink information on the shared uplink resource by using a dedicated modulation and demodulation mode of the first cell. In this way, the first cell can correctly parse the content of the uplink information by using the modulation and demodulation method.

In another possible implementation, the terminal device is notified by the dedicated uplink resource of each cell: S102B, the terminal device sends uplink information on the dedicated uplink resource of the first cell, and the uplink information is used to indicate the data transmission node of the terminal device. In this way, the network access device to which the first cell belongs can determine to send uplink information on the dedicated uplink resource of the first cell.

As can be seen from FIG. 5a, dedicated uplink resource 1 of cell 1, dedicated uplink resource 2 of cell 2, and dedicated uplink resource 3 of cell 3 are used for cell 1, cell 2, and cell 3, respectively.

Optionally, in step, the step S102B in the application may be specifically implemented in the following manner:

S102B1: The terminal device sends uplink information in a dedicated uplink resource of the first cell in a modulation and demodulation manner commonly used by each cell in the first cell group.

On the other hand, the step S102B in the present application may be specifically implemented in the following manner: S102B2: The terminal device sends the uplink information on the dedicated uplink resource of the first cell in the first cell-specific modulation and demodulation mode.

Optionally, the uplink information in the application includes the first identifier of the first cell and the second identifier of the terminal device.

Optionally, the second identifier is used to identify the terminal device.

Exemplarily, the second identifier may be an identifier of the terminal device in the first cell group, where the second identifier is used The terminal device is identified within the first cell group.

The uplink information in this application can be in many forms:

In one form, the uplink information may be a first sequence, and the root sequence of the first sequence is determined by the second identifier of the terminal device and the first identifier of the first cell.

Specifically, the cyclic shift of the first sequence is determined by the identity of the first cell (eg, PCI).

Illustratively, the first sequence may be an uplink sequence, such as a ZC (Zadoff-Chu) sequence. Of course, the uplink information may also be other sequences, such as an M sequence, which is not limited by the embodiment of the present invention. For example, the uplink information may be an uplink message, such as a layer 1 (L1) message or an L1 signaling or an uplink message, and the network access device to which the member cell in the first cell group belongs may receive the uplink information, where The uplink information carries an identifier of the first cell (such as a PCI) and a second identifier of the terminal device.

Optionally, the uplink information may also carry the signaling with feedback that all the cells in the first cell group can resolve. For example, the feedback may be an acknowledgement (Ack) or a negative acknowledgement (Nack).

In addition, optionally, the uplink information may further carry information used to indicate that at least one source cell stops data transmission.

The information of the source cell may be a PCI of the source cell, and the network access device to which the source cell belongs may be a data transmission node of the terminal device before the first network access device serves as a data transmission node.

Further optionally, the uplink information may also carry an identifier of the anchor base station.

Optionally, the uplink information may be sent by the terminal device by using a PUSCH, a PUCCH, a packet random access channel (PRACH), or a sounding reference signal (SRS), or the uplink information may be It is a new channel designed, which is not limited in the embodiment of the present invention. The terminal device may also send the uplink information through the common resource information negotiated by the network access device to which the multiple cells belong.

In another form, the uplink information may be a signaling that can be parsed by the relevant cell (where the relevant cell may be understood as a cell corresponding to the data transmission node or the source cell), for example, the signaling that the first cell can parse, Or signaling that the data transmission node or the source data transmission node (for example, the network access device to which the source cell belongs is a source data transmission node) can be parsed.

For example, the uplink information sent by the terminal device includes the first information and the second information, or the uplink information sent by the terminal device includes only the first information.

The first information is used to indicate that the first network access device is determined to be a data transmission node, and the first information is scrambled by the identifier of the first cell, such as a PCI, and carries the second identifier of the terminal device and the first indication information. The first indication information is used to indicate that the first network access device is determined to be a data transmission node. In this case, only the data transmission node can correctly decode the first information.

The second information is used to indicate that the second network access device stops the data transmission, and the second information is used for the identifier of the second cell (such as PCI) to be scrambled, and carries the second identifier and the second indication information of the terminal device, where the second information The indication information is used to indicate that the second network access device is instructed to stop data transmission.

The uplink information in this application can be sent by an uplink message or an uplink sequence.

The following describes the process in which the network access device determines itself as a data transmission node according to the uplink information after the terminal device notifies the network access device:

Specifically, if the terminal device sends the uplink sequence, each network access device to which the member cell in the first cell group belongs receives the uplink sequence, and each network access device parses the uplink sequence. The uplink information carried in the network is determined to be the first network access device, or only the first network access device can parse the uplink information included in the uplink sequence to determine that it is a data transmission node.

If the terminal device transmits the uplink information in the uplink information, the network access device to which the member cell in the first cell group belongs receives the uplink information, and then parses the first network access device. The data transmission node included in the uplink information acquisition uplink information belongs to the first network access device, and the first network access device determines that it is a data transmission node.

Optionally, if the first information and the second information are included in the uplink information, because the first information is scrambled by the first identifier of the first cell, the first network access device may determine that the first information is Data transfer node. Since the second information is scrambled by the first identifier of the second cell, the first network access device may determine, by parsing the second information (for example, the first network access device and the source network access device) Analysis.

Optionally, the first network access device sends the grant information to the terminal device according to the uplink information, where the grant information includes scheduling resource information, where the grant information includes at least one of an uplink grant information and a downlink grant information. .

The following describes the specific process of the data transmission node determining, and the terminal device notifying the first network access device as the data transmission node, and performing data transmission by the anchor base station through the first network access device and the terminal device:

The first network access device sends a data transmission request message to the anchor base station, where the data transmission request message is used to request data transmission; the first network access device sends the network access device to which the first cell belongs in the first cell group. The remaining network access devices send scheduling information, where the scheduling information is used to indicate that when the first network access device performs data transmission with the terminal device on the third resource information, the remaining network access devices are on the third resource information. The downlink data is not transmitted or the power of transmitting the downlink data is reduced, thereby avoiding interference between cells.

Optionally, the scheduling information includes MCS modulation and demodulation information, a time-frequency resource location, and the like, where the MCS demodulation information is optional.

Specifically, the data transmission request message may be an existing X2 interface message, or a new interface message, or an over-the-air (OTA) mode, which is not limited by the embodiment of the present invention. In addition, the data transmission request message may also be another message name, which is not limited in the embodiment of the present invention.

Here, it should be noted that, when the terminal device notifies the first network access device as the data transmission node of the terminal device in the form of the uplink information of the terminal device, if the uplink information carries the information of the data transmission node, for example, the first cell In an case where the identifier and the anchor base station can parse the uplink information to determine that the first network access device is a data transmission node, the first network access device may send a data transmission request message to the anchor base station.

Specifically, the first network access device may send scheduling information to the remaining network access devices through an interface between the network access devices, for example, an X2 interface or other existing interfaces. However, since the backhaul of the X2 interface between the network access devices is not necessarily the ideal backhaul, the interaction between the network access devices has a certain delay. To avoid/reduce the delay, the data transmission node The remaining network access devices can be notified by:

Mode A: The first network access device sends the scheduling information to the remaining network access devices in an over-the-air manner, that is, the scheduling information transmitted by the first network access device occupies a part of the downlink resources to implement the network access device. Air communication between.

Mode B: The first network access device first sends the scheduling information to the terminal device by using a downlink message (for example, Downlink Control Information, DCI), and the terminal device firstly uses the modulation and demodulation method parsed from the broadcast information. The cell group sends the uplink information of the bearer scheduling information to notify the other network access devices of the scheduling information. For the process of sending the uplink information, refer to the sending process of the uplink information in the foregoing embodiment, which is not described herein again.

Specifically, the terminal device receives scheduling information of the first cell of the data transmission node from the data transmission node (ie, the first network access device); the terminal device sends scheduling information on the uplink resource shared by the first cell group, and the scheduling information includes scheduling. The location of the resource, the scheduling information is used to indicate that the cell other than the first cell in the multiple cells remains silent on the scheduling resource.

It should be noted that, when the first network access device sends scheduling information to the remaining network access devices except the network access device to which the first cell belongs in the first cell group, the first network access device may also send silence to the remaining network access devices. (mute) indicates that the silence indication is used to indicate that the remaining network access devices remain silent according to the scheduling information.

Specifically, in one aspect, the silence indication may be sent to the remaining network access devices along with the scheduling information, in which case the scheduling information includes a silent indication. On the other hand, after the scheduling information is sent, the silent indication may be sent to the remaining network access devices, which is not limited in this application.

The following describes the process in which the anchor base station starts transmitting data to the terminal device through the first network access device:

Specifically, the anchor base station performs data transmission by using the first network access device and the terminal device, where: the anchor base station sends data to the first network access device, the first network access device receives data sent by the anchor base station, and the anchor base station is used. The transmitted transmission is to the terminal device; or the terminal device transmits data to the anchor base station through the first network access device.

It should be noted that the data sent by the anchor base station is described by taking a packet processed by a Packet Data Convergence Protocol (PDCP) layer as an example. The data transmitted by the anchor base station is similarly processed by the PDCP layer, the RLC layer, the MAC layer, the PHY layer, or the PDCP layer, the RLC layer, the MAC layer, or the data packet processed by the PDCP layer and the RLC layer. The embodiments of the invention are not described again.

It should be noted that, before the anchor base station performs data transmission by using the first network access device and the terminal device, the terminal device has determined the first network access device, and the terminal device has also notified the first network access device as a data transmission node. Specifically, the process of determining the first network access device by the terminal device may be referred to the description in the foregoing embodiment, and may also be determined according to other manners for determining the first network access device, which is not further described herein. For the process of the terminal device notifying the first network access device as a data transmission node, refer to the foregoing embodiment, and other applications are not described herein.

The following describes the process of replacing a data transfer node with a terminal device:

During the flight of the terminal device, there may be that the current data transmission node does not meet the requirements. For example, if the quality parameter of the current data transmission node does not meet the preset requirement, or there is a cell with better quality parameters, the terminal device can be re-established. A network access device is selected as the data transmission node. Specifically, the terminal device reselects a network access device as the data transmission node. For the process of determining the first network access device as the data transmission node, the terminal device described in the foregoing embodiment is used. This application does not repeat here.

It should be noted that when the terminal device replaces the data transmission node, the terminal device should already have a source data transmission node, and the determination manner of the source data transmission node can be determined by referring to the description in the foregoing embodiment, or may be determined by other methods. The application does not limit this, in addition, the number of sources that can pass between the terminal device and the anchor base station The data transmission process is performed by the transmission node. For the data transmission process, reference may be made to the foregoing embodiment or other data transmission mode, which is not described herein again.

The process of selecting a first network access device as a data transmission node by the network access device will be described below with reference to FIG. 5b. Generally, this case is applicable to the terminal device having an anchor base station. As shown in Figure 5b, it includes:

S201. The network access device determines that the first network access device to which the first cell belongs in the first cell group is a target data transmission node of the terminal device, where the first cell group includes multiple cells, and the multiple cells include the first cell. S202. The network access device sends a first indication to the first network access device, where the first indication is used to indicate that the first network access device is a target data transmission node of the terminal device.

Specifically, the step S201 is specifically implemented by: the network access device may determine, according to the measurement report sent by the terminal device to the network access device, that the first network access device is a data transmission node, and the measurement report includes the first cell group. Signal quality parameters for multiple cells within.

The network access device determines, according to the measurement report, that the first network access device is a data transmission node. In the foregoing embodiment, the terminal device determines, according to signal quality parameters of multiple cells, that the first network access device is data transmission. The process of the node is not described herein again.

Optionally, the method provided by the application further includes: S203, the network access device sends a second indication to the terminal device by using the source data transmission node, where the second indication is used to indicate that the first network access device is the a target data transmission node of the terminal device, wherein the source data transmission node is a data transmission node before the terminal device.

Specifically, the first indication may be sent by the network access device to the terminal device by using a dedicated signaling RRC message.

Optionally, the network access device may send the first indication information to the terminal device by using a downlink control information (DCI) or a media access control control element (MAC CE).

Specifically, the content of the second indication may be multiple. For example, the second indication includes identifier information (eg, PCI) of the first cell.

Optionally, the second indication further includes at least one of the broadcast information of the first cell group. Specifically, the content of the broadcast information may be referred to in the foregoing embodiment, and details are not described herein again. The terminal device can determine the data transmission node according to the identifier information of the first cell carried in the second indication. Optionally, if the second indication does not include the broadcast information of the first cell group, the terminal The device needs to acquire the broadcast information of the first cell group before the second indication is received, so as to obtain related information of each cell in the first cell group, so that related information associated with the identifier of the first cell may be determined according to the foregoing Table 3. Therefore, the terminal device can perform data transmission with the first network access device according to the related information.

Specifically, the network access device may send the broadcast information to the terminal device through the broadcast channel, and the broadcast channel may be a designed new broadcast channel or an existing broadcast channel design, which is not limited in the embodiment of the present invention. Alternatively, the broadcast information may be sent to the terminal device by using common resource information (for example, first resource information) negotiated by the network access device to which the multiple cells belong.

The method provided by the present application, before the network access device determines that the first network access device is the data transmission node of the terminal device, the method further includes: S204, the terminal device sends a measurement report to the network access device, where the measurement report includes the first cell. Information about multiple cells within a group (eg, signal quality parameters). S205, network access device Receive measurement reports sent by the terminal device.

Specifically, the terminal device may send the measurement report to the network access device in multiple manners. For example, in a case where the terminal device has a source data transmission node, the terminal device may first send the measurement report to the source. The data transmission node transmits the measurement report to the network access device by the source data transmission node. In another mode, the terminal device sends the measurement report directly to the network access device. In this manner, when the network access device and the first network access device are not the same network access device, the network access device There is also an air interface connection with the terminal device.

In addition, optionally, before the terminal device sends the measurement report to the network access device, the network access device may further send a request message to the terminal device when determining that the source data transmission node cannot meet the preset requirement, and the request message is used by the terminal device. The signal quality parameter of each cell is reported to the terminal device.

Optionally, the method provided by the application further includes: S206: The network access device sends a third indication to the source data transmission node, where the third indication is used to indicate that the source data transmission node stops the data transmission.

Specifically, the source data transmission node determines a data transmission node determined by the terminal device before the first network access device is a data transmission node, and the source data transmission node may be determined by the terminal device itself, or may be an anchor base station. It is determined for the terminal device, which is not limited in this application.

Specifically, the third indication may include the following content: the third indication includes a first identifier of the second cell, for example, a PCI.

Specifically, the method provided by the present application further includes: the first network access device sends scheduling information to the remaining network access devices in the first cell group, where the scheduling information includes a location of the scheduling resource, where the scheduling information is used to indicate multiple cells. The cells outside the first cell remain silent on the scheduling resources.

Specifically, the process and the manner in which the first network access device sends the scheduling information to the remaining network access devices in the first cell group may be referred to in the foregoing embodiment, and details are not described herein again.

The following describes the process of data transmission between the network access device and the terminal device through the first network access device. It can be understood that, in this case, the process of determining the data transmission node of the terminal device may be specifically For the process of determining the data transmission node for the terminal device, refer to the process of determining the data transmission node by the terminal device, and also refer to the process of determining the data transmission node by the network access device, or refer to other methods for determining the data transmission for the terminal device. The process of the node is not limited in this application.

Specifically, the process of data transmission by the network access device by using the first network access device and the terminal device may refer to the process that the anchor base station can perform data transmission by using the first network access device and the terminal device, and the application is here. No longer.

In addition, in the case that the network access device in the present application determines the first network access device as the data transmission node of the terminal device, the network access device may not notify the terminal device of which network access the selected data transmission node is. The device, that is, the second indication sent by the network access device to the terminal device may be omitted, but the terminal device itself blindly checks to determine which network access device is used as the data transmission node, and the following refers to the first network access device. As a data transmission node, for example, after the network access device determines that the first network access device is a data transmission node, the network access device transmits data to the terminal device by using the first network access device, and the terminal device receives The data is blindly detected after the data is received, that is, the received data is blindly detected on the time-frequency resource location of the ePDCCH of each cell, because the time-frequency resource location of the ePDCCH corresponding to each cell in the first cell group is in a first cell. Different in the group, in addition, the terminal device has a corresponding relationship between each cell and the time-frequency resource location of the ePDCCH. Therefore, after the terminal device detects the data on the time-frequency resource location of the first ePDCCH, the first network access device to which the cell associated with the time-frequency resource location of the first ePDCCH belongs may be determined as the data transmission node. .

Update of the data transfer node:

It is assumed that the cell in which the terminal device is currently located is the cell 2, and the anchor base station in the first cell group is the network access device 1, and the terminal device moves from the cell 2 to the cell 3.

The terminal device sends a measurement report to the anchor base station by measuring the signal quality of the neighboring cell, and the anchor base station receives the measurement report, and the anchor base station reselects a network access device as the data transmission node according to the received measurement report. For a specific process, refer to the process of selecting the first network access device by the network access device described in the foregoing embodiment, and details are not described herein again.

It should be noted that the processes described in the foregoing embodiments, for example, the process in which the terminal device determines that the first network access device is a data transmission node, the process in which the terminal device notifies the first network access device as a data transmission node, and the network connection The process of determining that the first network access device is a data transmission node, and the process of updating the data transmission node may be implemented separately, and each process may also be implemented in combination according to requirements, which is not limited in this application.

The following describes a process in which the terminal device determines the data transmission node, the terminal device replacement data transmission node, the data transmission node performs data transmission, the network access device determines the data transmission node, and the network access device replaces the data transmission node through a specific application scenario. For example, the virtual cell currently served or camped by the terminal device is the first cell group 1, and the first cell group has three network access devices, the network access device 1, the network access device 2, and the network access device 3. The network access device 1 is an anchor base station, and the network access device 2 and the network access device 3 can serve as data transmission nodes. The network access device 1 is connected to the core network to perform data transmission of the terminal device.

As shown in FIG. 6, FIG. 6 shows that after the terminal device determines that the data transmission node is the network access device 3, the terminal device sends uplink information to the network access device to which each cell in the first cell group belongs through the shared uplink resource. Schematic diagram. As shown in FIG. 7, FIG. 7 shows a schematic diagram of a terminal device transmitting uplink information through a dedicated uplink resource of a cell 3. Specifically, the process of the terminal device determining that the network access device 3 is a data transmission node can be referred to the foregoing embodiment, and details are not described herein again.

As shown in FIG. 8, FIG. 8 shows a process in which the terminal device determines that the data access node is the network access device 3, and the network access device 3 transfers the data. Specifically, the network access device 1 can access the device through the network. Receiving the data 2 sent by the terminal device or the process in which the network access device 1 sends the data 1 to the terminal device through the network access device 3, in this scenario, in order to avoid inter-cell interference, the method further includes: the terminal device accessing the network access device 2, sending a silent indication or the network access device 1 sends a silent indication to the network access device 2, in which the network access device 2 remains silent during the data transmission process by the terminal device through the network access device 3 and the network access device 1 .

Generally, when the terminal device moves from one cell 3 to another cell 2 in the first cell group, there may be that the currently determined data transmission node does not meet the requirements during the flight of the terminal device in the air, for example, current The quality parameter of the data transmission node does not meet the preset requirement, or there is a cell with better quality parameters, then the terminal device can reselect a network access device as a data transmission node. Specifically, the terminal device reselects a network access. The device as a data transmission node process can be referred to the above embodiment. As shown As shown in FIG. 9, FIG. 9 shows a schematic diagram of the data transmission node of the terminal device being converted by the network access device 3 into the network access device 2. As shown in FIG. 9, during the data transmission process between the terminal device and the network access device 3, the network access device 2 remains silent; when the data transmission node of the terminal device changes from the network access device 3 to the network access device 2 During the process of data transmission between the terminal device and the network access device 2, the network access device 3 remains silent. Specifically, the process of converting the data transmission node of the terminal device from the network access device 3 to the network access device 2 can be referred to. The description in the above embodiments is not described herein again.

As shown in FIG. 10, FIG. 10 shows that after the anchor base station determines that the data transmission node is the network access device 3, the anchor base station sends a first indication to the network access device 3, where the first indication is used to indicate the network access device 3. A schematic diagram of a data transmission node of the terminal device, further comprising an anchor base station transmitting a second indication to the terminal device, the second indication being used by the terminal device to determine that the data transmission node is the network access device 3. Specifically, the process of determining that the network access device 3 is a data transmission node by the anchor base station can be referred to the foregoing embodiment, and details are not described herein again.

As shown in FIG. 11, FIG. 11 shows a process in which the anchor base station determines that the data access node is the network access device 3, and the network access device 3 transfers data. Specifically, the network access device 1 can access the device through the network. Receiving the data 2 sent by the terminal device or the process in which the network access device 1 sends the data 1 to the terminal device through the network access device 3, in this scenario, in order to avoid inter-cell interference, the method further includes: the terminal device accessing the network access device 2, sending a silent indication or the network access device 3 sends a silent indication to the network access device 2, when the terminal device performs data transmission through the network access device 3 and the network access device 1, the network access device 2 remains silent. .

Specifically, in the scenario that the data transmission node is replaced by the anchor base station for the terminal device, the process of converting the data transmission node of the terminal device from the network access device 3 to the network access device 2 can be referred to FIG. 8 above, and the present application does not Let me repeat.

The solution provided by the embodiment of the present application is mainly introduced from the perspective of interaction between the network elements. It can be understood that each network element, such as a network access device and a terminal device. In order to implement the above functions, it includes hardware structures and/or software modules corresponding to the execution of the respective functions. Those skilled in the art will readily appreciate that the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

The embodiments of the present application may divide the function modules of the network access device and the terminal device according to the foregoing method example. For example, each function module may be divided according to each function, or two or more functions may be integrated into one processing module. in. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner. The following is an example of dividing each functional module by using corresponding functions:

In the case of employing an integrated unit, FIG. 12 shows a possible structural diagram of the terminal device involved in the above embodiment. The terminal device includes a determining unit 101 and a transmitting unit 102. The determining unit 101 is configured to support the terminal device to perform step S101 in the foregoing embodiment (specifically, may be S1011, S1012, S1014, and S1015); the sending unit 102 is configured to support the terminal device to perform the foregoing embodiment. Step S102A (specifically, it may be S102A1 and S102A2) or S102B (specifically, it may be S102B1 and S102B2). In addition, the terminal device provided by the present application further includes: a receiving unit 103, which is further configured to support the terminal device to perform steps S103 and S1013 in the foregoing embodiment. And/or other processes for the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.

In the case of employing an integrated unit, FIG. 13 shows a possible logical structure diagram of the terminal device involved in the above embodiment. The terminal device includes a processing module 112 and a communication module 113. The processing module 112 is configured to perform control and management on the terminal device actions. For example, the processing module 112 is configured to support the terminal device to perform step S101 in the foregoing embodiment (specifically, may be S1011, S1012, S1014, and S1015); The supporting terminal device performs step S102A (specifically, may be S102A1 and S102A2) or S102B (specifically, may be S102B1 and S102B2), steps S103 and S1013 in the above embodiment. And/or other processes performed by the terminal device for the techniques described herein. The terminal device may further include a storage module 111 for storing program codes and data of the terminal device.

The processing module 112 may be a processor or a controller, such as a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, Hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. The communication module 113 can be a transceiver, a transceiver circuit, a communication interface, or the like. The storage module 111 can be a memory.

When the processing module 112 is the processor 120, the communication module 113 is the communication interface 130 or the transceiver, and the storage module 111 is the memory 140, the terminal device involved in the present application may be the device shown in FIG.

The communication interface 130, the at least one processor 120, and the memory 140 are mutually connected by a bus 110; the bus 110 may be a PCI bus or an EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 14, but it does not mean that there is only one bus or one type of bus. The memory 140 is used to store program codes and data of the terminal device. The communication interface 130 is configured to support the terminal device to communicate with other devices (for example, network access devices), and the processor 120 is configured to support the terminal device to execute program codes and data stored in the memory 140 to implement a data transmission node provided by the present application. Determine the method.

In the case of employing an integrated unit, FIG. 15 shows a possible structural diagram of the network access device involved in the above embodiment. The network access device includes a determining unit 201 and a transmitting unit 202. The receiving unit 201 is configured to support the network access device to perform step S201 in the foregoing embodiment, and the sending unit 202 is configured to support the network access device to perform step S202 and step S203 in the foregoing embodiment. In addition, the network access device in this application further includes: a receiving unit 203, configured to support the network access device to perform step S205 in the foregoing embodiment. And/or other processes for the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.

On the basis of hardware implementation, the receiving unit 203 in the present application may be a receiver of the network access device, and the sending unit 202 may be a transmitter of the network access device, where the receiver can usually send with the network access device. The devices are integrated for use as a transceiver, and the specific transceiver may also be referred to as a communication interface, and the determining unit 201 may be integrated on a processor of the network access device.

In the case of employing an integrated unit, FIG. 16 shows a possible logical structure diagram of the network access device involved in the above embodiment. The network access device includes a processing module 212 and a communication module 213. The processing module 212 is configured to perform control and management on network access device actions. For example, the processing module 212 is configured to support the network access device to perform step S201 in the foregoing embodiment, and the communication module 213 is configured to support the network access device to execute the foregoing embodiment. Steps S202, S203, and S205. And/or other processes performed by the network access device for the techniques described herein. The network access device may further include a storage module 211 for storing program codes and data of the network access device.

The processing module 212 can be a processor or a controller, for example, a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, Hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. The communication module 213 can be a transceiver, a transceiver circuit, a communication interface, or the like. The storage module 211 can be a memory.

When the processing module 212 is the processor 220, the communication module 213 is the communication interface 230 or the transceiver, and the storage module 211 is the memory 210, the network access device involved in the present application may be the device shown in FIG.

The communication interface 230, the at least one processor 220, and the memory 210 are connected to each other through a bus 200. The bus 200 may be a PCI bus or an EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 17, but it does not mean that there is only one bus or one type of bus. The memory 210 is used to store program codes and data of the network access device. The communication interface 230 is configured to support the network access device to communicate with other devices (eg, terminal devices), and the processor 220 is configured to support the network access device to execute program codes and data stored in the memory 210 to implement a data provided by the present application. The transmission method or the data transmission node determination method.

It should be noted that the receiving unit (or the unit for receiving) involved in the present application may be a data transmission node determining device or an interface circuit of the data transmitting device for receiving signals from other devices. For example, when the data transmission node determines whether the device or the data transmission device is implemented in a chip manner, the receiving unit is an interface circuit for the chip to receive signals from other chips or devices. The above transmitting unit (or unit for transmitting) is an interface circuit of the data transmitting node determining device or the data transmitting device for transmitting signals to other devices. For example, when the data transmission node determining device or the data transmission device is implemented in a chip manner, the transmitting unit is an interface circuit for transmitting signals to other chips or devices.

FIG. 18 is a schematic structural diagram of a chip system 150 according to an embodiment of the present invention. The chip system 150 includes at least one processor 1510, a memory 1540, and an interface circuit 1530 that can include read only memory and random access memory and provides operational instructions and data to the processor 1510. A portion of memory 1540 may also include non-volatile random access memory (NVRAM).

In some implementations, the memory 1540 stores the following elements, executable modules or data structures, or a subset thereof, or their extended set:

In the embodiment of the present invention, the corresponding operation is performed by calling an operation instruction stored in the memory 1540 (which can be stored in the operating system).

One possible implementation manner is that the structure of the chip system used by the network access device and the terminal device is similar, but different devices use different chip systems to implement their respective functions.

The processor 1510 controls the operations of the network access device and the terminal device, and the processor 1510 may also be referred to as a CPU (Central Processing Unit). Memory 1540 can include read only memory and random access memory and provides instructions and data to processor 1510. A portion of memory 1540 may also include non-volatile random access memory (NVRAM). In a specific application, the data transmission node determining device or the various components of the data transmission device are coupled together by a bus system 1520. The bus system 1520 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 1520 in FIG.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1510 or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1510 or an instruction in a form of software. The processor 1510 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540 and performs the steps of the above method in combination with its hardware.

Optionally, the interface circuit 1530 is configured to perform the steps of receiving and transmitting by the network access device and the terminal device in the foregoing embodiments.

The processor 1510 is configured to perform the steps of the network access device and the terminal device in the above embodiments.

In the above embodiments, the instructions stored by the memory for execution by the processor may be implemented in the form of a computer program product. The computer program product may be written in the memory in advance, or may be downloaded in software and installed in the memory.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, an optical medium such as a DVD, or a semiconductor medium such as a Solid State Disk (SSD).

In one aspect, a computer storage medium is provided. The computer readable storage medium stores instructions, and when it runs on the terminal device, causes the terminal device to perform step S101 in the embodiment (specifically, it may be S1011, S1012, S1014, and S1015), step S102A (specifically, may be S102A1 and S102A2) or S102B (specifically, it may be S102B1 and S102B2), steps S103 and S1013. And/or other processes performed by the terminal device for the techniques described herein.

In another aspect, a computer storage medium is provided, where instructions are stored in a computer readable storage medium, and when executed on a network access device, the network access device performs steps S201, S202, S203 in the embodiment, and S205. And/or other processes performed by the network access device for the techniques described herein.

In another aspect, a computer program product is provided, the computer program product storing instructions, when the terminal device is running on the terminal device, causing the terminal device to perform step S101 in the embodiment (specifically, it may be S1011, S1012 S1014 and S1015), step S102A (specifically, may be S102A1 and S102A2) or S102B (specifically, may be S102B1 and S102B2), steps S103 and S1013.

In a further aspect, a computer program product is provided, the computer program product storing instructions, when the network access device is running, causing the network access device to perform steps S201, S202, S203 in the embodiment. And S205. And/or other processes performed by the network access device for the techniques described herein.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device so that A series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing such that instructions executed on a computer or other programmable device are provided for implementing one flow or multiple processes and/or block diagrams in the flowchart The steps of the function specified in the box or in multiple boxes.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

A data transmission node determining method, comprising:

The terminal device determines that the first network access device to which the first cell in the first cell group belongs is a data transmission node, and the first cell group includes multiple cells;

The terminal device sends uplink information on an uplink resource shared by the multiple cells, where the uplink information is used to indicate a data transmission node of the terminal device.
The method according to claim 1, wherein the uplink information comprises a first identifier of the first cell and a second identifier of the terminal device.
The method according to claim 1 or 2, wherein the uplink information is a first sequence, and the first sequence is determined by a first identifier of the first cell and a second identifier of the terminal device.
The method according to claim 1 or 2, wherein the uplink information is further used to indicate that the second network access device to which the second cell belongs in the first cell group stops data transmission, and the second network The access device is a data transmission node of the terminal device before determining that the first network access device is a data transmission node.
The method according to claim 1, wherein the uplink information comprises first information, and the first information is used to indicate that the first network access device is determined to be a data transmission node.
The method according to claim 5, wherein the uplink information further comprises second information, the second information being used to instruct the second network access device to stop data transmission.
The method according to claim 5 or 6, wherein the first information carries first indication information and a second identifier of the terminal device, and the first information uses a first identifier of the first cell The first indication information is used to indicate that the first network access device is determined to be a data transmission node;

The second information carries the second indication information and the second identifier of the terminal device, the second information is scrambled by using the first identifier of the second cell, and the second indication information is used to indicate the second network access The device stops data transfer.
The method according to any one of claims 1 to 7, wherein the method further includes: before the terminal device sends the uplink information on the uplink resource shared by the multiple cells, the method further includes:

The terminal device receives the broadcast information that is commonly used by the first cell group, and the broadcast information is used to indicate an uplink resource that is shared by the multiple cells.
The method according to claim 8, wherein the broadcast information is further used to indicate a modulation and demodulation mode in which the terminal device sends uplink information, wherein different modes of modulation and demodulation of different cells are the same.
The method according to any one of claims 1 to 9, wherein the terminal device determines that the first network access device to which the first cell in the first cell group belongs is a data transmission node, and includes:

The terminal device receives the third indication information that is sent by the anchor base station, where the third indication information is used to indicate that the first network access device is determined to be a data transmission node;

The terminal device determines the first network access device as a data transmission node according to the third indication information.
The method according to any one of claims 1 to 9, wherein the terminal device determines that the first network access device to which the first cell in the first cell group belongs is a data transmission node, and includes:

Determining, by the terminal device, that the resource information corresponding to the first cell has data transmission;

The terminal device determines the first network access device to which the first cell belongs as the data transmission node.
The method according to any one of claims 1 to 11, wherein the method further comprises:

Receiving, by the terminal device, scheduling information of the first cell sent by the data transmission node;

The terminal device sends the scheduling information on an uplink resource shared by the first cell group;

The scheduling information includes a location of a scheduling resource, where the scheduling information is used to indicate that a cell other than the first cell in the multiple cells remains silent on the scheduling resource.
A data transmission node determining method, comprising:

The network access device determines that the first network access device to which the first cell belongs in the first cell group is a target data transmission node of the terminal device, the first cell group includes multiple cells, and the multiple cells include the a cell

The network access device sends a first indication to the first network access device, where the first indication is used to indicate that the first network access device is a target data transmission node of the terminal device.
The method of claim 13 wherein the method further comprises:

The network access device sends a second indication to the terminal device by using a source data transmission node, where the second indication is used to indicate that the first network access device is a target data transmission node of the terminal device, where The source data transmission node is a data transmission node before the terminal device.
The method according to claim 13 or 14, wherein the method further comprises:

The network access device sends a third indication to the source data transmission node, where the third indication is used to instruct the source data transmission node to stop data transmission.
A data transmission node determining apparatus, comprising:

a determining unit, configured to determine that the first network access device to which the first cell in the first cell group belongs is a data transmission node, where the first cell group includes multiple cells;

And a sending unit, configured to send uplink information on an uplink resource that is shared by the multiple cells, where the uplink information is used to indicate a data transmission node of the terminal device.
The apparatus according to claim 16, wherein the uplink information comprises a first identifier of the first cell and a second identifier of the terminal device.
The apparatus according to claim 16 or 17, wherein the uplink information is a first sequence, and the first sequence is determined by a first identifier of the first cell and a second identifier of the terminal device.
The device according to claim 16 or 17, wherein the uplink information is further used to indicate that the second network access device to which the second cell belongs in the first cell group stops data transmission, and the second network The access device is a data transmission node of the terminal device before determining that the first network access device is a data transmission node.
The apparatus according to claim 16, wherein the uplink information comprises first information, and the first information is used to indicate that the first network access device is determined to be a data transmission node.
The apparatus according to claim 20, wherein the uplink information further comprises second information, the second information being used to instruct the second network access device to stop data transmission.
The device according to claim 20 or 21, wherein the first information carries first indication information and a second identifier of the terminal device, and the first information uses a first identifier of the first cell The first indication information is used to indicate that the first network access device is determined to be a data transmission node;

The second information carries second indication information and a second identifier of the terminal device, where the second information is And scrambling with the first identifier of the second cell, where the second indication information is used to indicate that the second network access device stops data transmission.
The device according to any one of claims 16 to 22, wherein the device further comprises:

And a receiving unit, configured to receive broadcast information that is commonly used by the first cell group, where the broadcast information is used to indicate an uplink resource that is shared by the multiple cells.
The apparatus according to claim 23, wherein the broadcast information is further used to indicate a modulation and demodulation mode in which the terminal device sends uplink information, wherein different modes of modulation and demodulation of different cells are the same.
The device according to any one of claims 16 to 24, wherein the receiving unit is configured to receive third indication information sent by the anchor base station, where the third indication information is used to indicate that the first network is connected The device is determined to be a data transmission node;

The determining unit is configured to determine, according to the third indication information, the first network access device as a data transmission node.
The device according to any one of claims 16 to 24, wherein the determining unit is configured to determine that the resource information corresponding to the first cell has data transmission; and The first network access device is determined to be the data transmission node.
The apparatus according to any one of claims 16 to 26, wherein the receiving unit is further configured to receive scheduling information of the first cell sent by the data transmission node;

The sending unit is configured to send the scheduling information on an uplink resource that is shared by the first cell group;

The scheduling information includes a location of a scheduling resource, where the scheduling information is used to indicate that a cell other than the first cell in the multiple cells remains silent on the scheduling resource.
A data transmission node determining apparatus, comprising:

a determining unit, configured to determine that the first network access device to which the first cell belongs in the first cell group is a target data transmission node of the terminal device, where the first cell group includes multiple cells, and the multiple cells include the First cell;

And a sending unit, configured to send, to the first network access device, a first indication, where the first indication is used to indicate that the first network access device is a target data transmission node of the terminal device.
The device according to claim 28, wherein the sending unit is further configured to send a second indication to the terminal device by using a source data transmission node, where the second indication is used to indicate the first network connection The ingress device is a target data transmission node of the terminal device, where the source data transmission node is a data transmission node before the terminal device.
The device according to claim 28 or 29, wherein the sending unit is further configured to send a third indication to the source data transmission node, where the third indication is used to indicate that the source data transmission node stops data transmission.
A computer readable storage medium, wherein the computer readable storage medium is stored in a terminal device, wherein the computer readable storage medium stores instructions, when the instructions are executed, causing a computer to execute the above The data transfer node determining method according to any one of claims 1 to 12; wherein the computer readable storage medium is applied to a network access device, wherein the computer readable storage medium stores an instruction when the instruction is In operation, the computer is caused to perform the data transfer node determination method of any of the preceding claims 13-15.