Communication method, base station, radio communication node, and user equipment

• US 10,129,868 B2
• Filed: 05/08/2017
• Issued: 11/13/2018
• Est. Priority Date: 09/13/2012
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Lin, Bo, Bi, Hao, Zhou, Yongxing, Wang, Yu
• Primary Examiner(s): Wong, Warner
• Application Number:
  US15/589,414
• Publication Number:
  US 20170245255A1
• Time in Patent Office: 554 Days
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04W 16/02 Resource partitioning among network components, e.g. reuse partitioning
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal

Abstract

A communication method, a base station, a radio communication node, and a user equipment are provided. A base station determines first resource configuration information, where the first resource configuration information is used for indicating N radio resource sets that are used when N radio communication nodes separately perform communication with a user equipment UE, and the radio resource includes a time domain resource and/or a frequency domain resource. The base station sends the first resource configuration information to the UE, where the UE communicates with a corresponding transmission point by using respective radio resource sets of transmission points, and the respective radio resource sets of the transmission points do not intersect. Therefore, a base station does not need to schedule a radio resource, thereby lowering a delay requirement on a backhaul link and eliminating interference.

Claims

1. A method comprising:

establishing, by a terminal device, a radio resource control (RRC) connection with a base station; and

establishing, by the terminal device, a user plane connection with N radio communication nodes separately according to a connection configuration parameter of the terminal device sent by the base station, wherein the connection configuration parameter comprises a physical layer configuration parameter and a medium access control (MAC) layer configuration parameter;

receiving, by the terminal device, first resource configuration information from the base station, wherein the first resource configuration information indicates N radio resource sets that are used when the N radio communication nodes separately perform communication with the terminal device, N is a positive integer, a radio resource in each radio resource set among the N radio resource sets is used for a radio communication node corresponding to each radio resource set to schedule the terminal device, and the radio resource comprises at least one of a time domain resource or a frequency domain resource; and

communicating, by the terminal device, with a corresponding transmission point by using a radio resource in respective radio resource sets of transmission points, wherein the respective radio resource sets of the transmission points do not intersect, the respective radio resource sets of the transmission points comprise the N radio resource sets, and the transmission points comprise the N radio communication nodes.

2. The method according to claim 1, wherein

the transmission points further comprise the base station, and the N radio resource sets used by the terminal device further comprise a radio resource set used for communication between the terminal device and the base station.

3. The method according to claim 1, further comprising at least of one of the following:

receiving, by the terminal device, first identifier information from the base station, and identifying correspondences between the N radio resource sets and reference signals used by the N radio communication nodes according to the first identifier information;

or

receiving instruction information from the base station, and receiving a corresponding control channel by using the instruction information according to a type of a control channel of the base station or a radio communication node;

or

receiving second identifier information from the base station, and mapping data of a transmission channel, a radio bearer or an evolved packet switch (EPS) bearer to corresponding radio resources of the N radio resource sets according to the second identifier information, or mapping data acquired from the corresponding radio resources of the N radio resource sets to a corresponding transmission channel, radio bearer or EPS bearer according to the second identifier information;

or

receiving third identifier information from the base station, and identifying the base station and the N radio communication nodes according to the third identifier information;

or

receiving information about scrambling code parameter configuration from the base station, descrambling a downlink reference signal or a downlink physical channel according to the information about scrambling code parameter configuration, or scrambling an uplink reference signal or an uplink physical channel according to the information about scrambling code parameter configuration, wherein

the downlink reference signal, the downlink physical channel, the uplink reference signal, and the uplink physical channel belong to the base station or at least one of the N radio communication nodes.

4. The method according to claim 3, wherein after the identifying correspondences between the N radio resource sets and reference signals used by the N radio communication nodes according to the first identifier information, the method further comprises at least of one of the following:

measuring, by the terminal device, a downlink reference signal on a corresponding downlink radio resource or sending a corresponding uplink reference signal on a corresponding uplink radio resource according to the correspondences;

or

performing, by the terminal device, channel measurement according to the reference signals, and separately sending a measurement result to the N radio communication nodes on corresponding radio resources according to the correspondences;

or

performing, by the terminal device, channel estimation on the corresponding radio resources separately by using the reference signals according to the correspondences, and performing decoding on the corresponding radio resources according to a channel estimation result.

5. An apparatus, comprising:

at least one hardware processor; and

a non-transitory computer-readable storage medium coupled to the at least one hardware processor and storing programming instructions for execution by the at least one hardware processor, wherein the programming instructions, when executed, cause the at least one hardware processor to perform operations comprising;

establishing, by a terminal device, a radio resource control (RRC) connection with a base station; and

establishing, by the terminal device, a user plane connection with N radio communication nodes separately according to a connection configuration parameter of the terminal device sent by the base station, wherein the connection configuration parameter comprises a physical layer configuration parameter and a medium access control (MAC) layer configuration parameter;

receiving, by the terminal device, first resource configuration information from the base station, wherein the first resource configuration information indicates N radio resource sets that are used when the N radio communication nodes separately perform communication with the terminal device, N is a positive integer, a radio resource in each radio resource set among the N radio resource sets is used for a radio communication node corresponding to each radio resource set to schedule the terminal device, and the radio resource comprises at least one of a time domain resource or a frequency domain resource; and

communicating, by the terminal device, with a corresponding transmission point by using a radio resource in respective radio resource sets of transmission points, wherein the respective radio resource sets of the transmission points do not intersect, the respective radio resource sets of the transmission points comprise the N radio resource sets, and the transmission points comprise the N radio communication nodes.

6. The apparatus according to claim 5, wherein

the transmission points further comprise the base station, and the N radio resource sets used by the terminal device further comprise a radio resource set used for communication between the terminal device and the base station.

7. The apparatus according to claim 5, the operations further comprising at least of one of the following:

receiving, by the terminal device, first identifier information from the base station, and identifying correspondences between the N radio resource sets and reference signals used by the N radio communication nodes according to the first identifier information;

or

receiving instruction information from the base station, and receiving a corresponding control channel by using the instruction information according to a type of a control channel of the base station or a radio communication node;

or

receiving second identifier information from the base station, and mapping data of a transmission channel, a radio bearer or an evolved packet switch (EPS) bearer to corresponding radio resources of the N radio resource sets according to the second identifier information, or mapping data acquired from the corresponding radio resources of the N radio resource sets to a corresponding transmission channel, radio bearer or EPS bearer according to the second identifier information;

or

receiving third identifier information from the base station, and identifying the base station and the N radio communication nodes according to the third identifier information;

or

receiving information about scrambling code parameter configuration from the base station, descrambling a downlink reference signal or a downlink physical channel according to the information about scrambling code parameter configuration, or scrambling an uplink reference signal or an uplink physical channel according to the information about scrambling code parameter configuration, wherein

the downlink reference signal, the downlink physical channel, the uplink reference signal, and the uplink physical channel belong to the base station or at least one of the N radio communication nodes.

8. The apparatus according to claim 7, wherein after the identifying correspondences between the N radio resource sets and reference signals used by the N radio communication nodes according to the first identifier information, the operations further comprise at least of one of the following:

measuring, by the terminal device, a downlink reference signal on a corresponding downlink radio resource or sending a corresponding uplink reference signal on a corresponding uplink radio resource according to the correspondences;

or

performing, by the terminal device, channel measurement according to the reference signals, and separately sending a measurement result to the N radio communication nodes on corresponding radio resources according to the correspondences;

or

performing, by the terminal device, channel estimation on the corresponding radio resources separately by using the reference signals according to the correspondences, and performing decoding on the corresponding radio resources according to a channel estimation result.

9. A non-transitory computer-readable medium storing computer instructions that when executed by one or more hardware processors, cause the one or more hardware processors to perform operations comprising:

establishing, by a terminal device, a radio resource control (RRC) connection with a base station; and

establishing, by the terminal device, a user plane connection with N radio communication nodes separately according to a connection configuration parameter of the terminal device sent by the base station, wherein the connection configuration parameter comprises a physical layer configuration parameter and a medium access control (MAC) layer configuration parameter;

receiving, by the terminal device, first resource configuration information from the base station, wherein the first resource configuration information indicates N radio resource sets that are used when the N radio communication nodes separately perform communication with the terminal device, N is a positive integer, a radio resource in each radio resource set among the N radio resource sets is used for a radio communication node corresponding to each radio resource set to schedule the terminal device, and the radio resource comprises at least one of a time domain resource or a frequency domain resource; and

communicating, by the terminal device, with a corresponding transmission point by using a radio resource in respective radio resource sets of transmission points, wherein the respective radio resource sets of the transmission points do not intersect, the respective radio resource sets of the transmission points comprise the N radio resource sets, and the transmission points comprise the N radio communication nodes.

10. The non-transitory computer-readable medium according to claim 9, wherein

the transmission points further comprise the base station, and the N radio resource sets used by the terminal device further comprise a radio resource set used for communication between the terminal device and the base station.

11. The non-transitory computer-readable medium according to claim 9, the operations further comprising at least of one of the following:

receiving, by the terminal device, first identifier information from the base station, and identifying correspondences between the N radio resource sets and reference signals used by the N radio communication nodes according to the first identifier information;

or

receiving instruction information from the base station, and receiving a corresponding control channel by using the instruction information according to a type of a control channel of the base station or a radio communication node;

or

receiving second identifier information from the base station, and mapping data of a transmission channel, a radio bearer or an evolved packet switch (EPS) bearer to corresponding radio resources of the N radio resource sets according to the second identifier information, or mapping data acquired from the corresponding radio resources of the N radio resource sets to a corresponding transmission channel, radio bearer or EPS bearer according to the second identifier information;

or

receiving third identifier information from the base station, and identifying the base station and the N radio communication nodes according to the third identifier information;

or

receiving information about scrambling code parameter configuration from the base station, descrambling a downlink reference signal or a downlink physical channel according to the information about scrambling code parameter configuration, or scrambling an uplink reference signal or an uplink physical channel according to the information about scrambling code parameter configuration, wherein

the downlink reference signal, the downlink physical channel, the uplink reference signal, and the uplink physical channel belong to the base station or at least one of the N radio communication nodes.

12. The non-transitory computer-readable medium according to claim 11, wherein after the identifying correspondences between the N radio resource sets and reference signals used by the N radio communication nodes according to the first identifier information, the operations further comprise at least of one of the following:

measuring, by the terminal device, a downlink reference signal on a corresponding downlink radio resource or sending a corresponding uplink reference signal on a corresponding uplink radio resource according to the correspondences;

or

performing, by the terminal device, channel measurement according to the reference signals, and separately sending a measurement result to the N radio communication nodes on corresponding radio resources according to the correspondences;

or

performing, by the terminal device, channel estimation on the corresponding radio resources separately by using the reference signals according to the correspondences, and performing decoding on the corresponding radio resources according to a channel estimation result.