WO2013163900A1

WO2013163900A1 - Uplink communication method and terminal

Info

Publication number: WO2013163900A1
Application number: PCT/CN2013/071972
Authority: WO
Inventors: 张亮亮; 柴丽; 蔺波
Original assignee: 华为技术有限公司
Priority date: 2012-05-04
Filing date: 2013-02-28
Publication date: 2013-11-07
Also published as: CN103384386B; CN103384386A

Abstract

An uplink communication method and terminal. The method comprises: a terminal determining an uplink transmission point of the terminal according to configuration information sent by a base station; and the terminal performing uplink communication with the uplink transmission point of the terminal. When an embodiment of the present invention is applied in a CoMP communication system, because the terminal can determine the uplink transmission point of the terminal from multiple stations in the CoMP communication system according to the configuration information sent by the base station, instead of directly using a downlink access point of the terminal as an uplink access point, the terminal can obtain an uplink path loss closer to an actual one through measurement of the uplink transmission point, so that the terminal can select proper preamble code for accurate uplink power control, thereby improving the uplink communication quality.

Description

Uplink communication method and terminal

This application is submitted to the Chinese Patent Office on May 4, 2012, and the application number is

The priority of the Chinese patent application is hereby incorporated by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to an uplink communication method and a terminal. Background technique

3⁄4 LTE (Long Term Evolution) incorporates CoMP (Coordinated Multi-Point) technology to increase data transmission rate. In a CoMP communication system using CoMP technology, a plurality of interconnected access terminals serving as terminals are also called terminal transmission points or nodes or stations, which are usually base stations, which may be macro cell base stations. Or a micro cell base station, a macro cell base station is also called a macro base station, and a micro cell base station is also called a micro base station, and its form includes but is not limited to low power nodes such as pico, femto, and home base stations. The access point that provides the downlink service for the terminal is the downlink point, and the access point that provides the uplink service for the terminal is the uplink point. In the prior art, the terminal assumes that the downlink path loss is the same as the uplink path loss, that is, the uplink point and the downlink point of the terminal are the same point, so the terminal will default the measured downlink path loss as the uplink path loss, and perform preamble (preamble). The choice of code) and the control of the uplink power. With the development of wireless technology, the uplink and downlink points of the terminal may not be the same access point. If the terminal directly uses one downlink point of the terminal as its uplink point, an error may occur. In this case, when the terminal may directly measure the measured downlink path loss as the uplink path loss, the uplink path loss is significantly different from the actual uplink path loss of the terminal, so that it is difficult for the terminal to select an appropriate preamble code according to the uplink path loss. And it is difficult to perform accurate uplink power control, resulting in a decline in uplink communication quality. Therefore, the terminal cannot correctly identify the upstream point, which will seriously affect the communication performance. Summary of the invention

In the embodiment of the present invention, an uplink communication method and a terminal are provided to solve the problem that the terminal directly uses the downlink access point as an uplink access point in the prior art, resulting in a decrease in uplink communication quality. In order to solve the above technical problem, the embodiment of the present invention discloses the following technical solutions: An uplink communication method, the method includes: determining, by a terminal, an uplink transmission point of the terminal according to configuration information sent by the base station; and performing uplink communication with the uplink transmission point of the terminal by the terminal. An uplink communication terminal, the terminal includes: a determining unit, configured to determine an uplink transmission point of the terminal according to configuration information sent by the base station; and a communication unit, configured to perform uplink communication with an uplink transmission point of the terminal. In the embodiment of the present invention, the terminal determines the uplink transmission point of the terminal according to the configuration information sent by the base station, and the terminal performs uplink communication with the uplink transmission point of the terminal, so as to avoid directly connecting the downlink access point of the terminal as an uplink access point. The entry point is identified incorrectly, thereby improving the quality of the uplink communication. In the embodiment of the present invention, an uplink communication method and a terminal are provided to solve the problem that the terminal directly uses the downlink access point as an uplink access point in the prior art, resulting in a decrease in uplink communication quality. An uplink communication method, the method includes: receiving, by a terminal, a message that includes an uplink path loss sent by a base station; determining, by the terminal, a communication resource according to the uplink path loss, and using the communication resource to perform uplink communication with an uplink transmission point of the terminal . An uplink communication terminal, the terminal includes: a receiving unit, configured to receive a message that includes an uplink path loss sent by the base station, and a communications unit, configured to determine, according to the uplink path loss, a communication resource, by using the communication resource and the The uplink transmission point of the terminal performs uplink communication. In the embodiment of the present invention, the terminal determines the uplink path loss of the terminal according to the configuration information sent by the base station, and performs uplink communication according to the uplink path loss, so as to avoid the downlink path loss directly as an identification error caused by the uplink path loss, thereby improving the uplink communication quality. . DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following embodiments or prior art will be BRIEF DESCRIPTION OF THE DRAWINGS The drawings used in the description are briefly described, and it will be apparent to those skilled in the art that other figures can be obtained from these drawings without the inventive labor. 1A is a schematic diagram of an application scenario of a CoMP communication system of a heterogeneous network according to the present invention; FIG. 1B is a schematic diagram of an application scenario of a CoMP communication system of another heterogeneous network according to the present invention; FIG. 3 is a flowchart of a second embodiment of an uplink communication method according to the present invention; FIG. 4 is a flowchart of a third embodiment of an uplink communication method according to the present invention; Figure 6 is a flowchart of a fifth embodiment of the uplink communication method of the present invention; Figure 7 is a flowchart of a sixth embodiment of the uplink communication method of the present invention; Figure 8B is a block diagram of a first embodiment of the determining unit of Figure 8A; Figure 8C is a block diagram of a second embodiment of the determining unit of Figure 8A; Figure 8D is a block diagram of a third embodiment of the determining unit of Figure 8A; Figure 8E is Figure 8A A block diagram of a fourth embodiment of the determining unit; FIG. 8F is a block diagram of an embodiment of the communication unit of FIG. 8A; and FIG. 9 is a block diagram of a second embodiment of the uplink communication terminal of the present invention. detailed description

The following embodiments of the present invention provide an uplink communication method and a terminal. The method may be applied to a CoMP scenario, and the terminal may determine, in the CoMP scenario, an uplink transmission point of the terminal as a target node for uplink transmission of the terminal in the CoMP. The above-mentioned objects, features, and advantages of the embodiments of the present invention will become more apparent and understood. The case is explained in further detail. The embodiments of the present invention may be applied to a CoMP communication system, where the communication system includes multiple interconnected access points or transmission points, such as a base station, which may be a macro base station (Macro eNB, or eNB), or a micro base station ( It can be Pico, Relay, HeNB, HNB, RRH, etc., which is not limited herein, in general, is a site or transmission point. In the embodiment of the present invention, the macro base station corresponding to the macro cell is represented by an eNB, and the micro base station corresponding to the micro cell is represented by an RRH (Remote Radio Head). Generally, a CoMP communication system can be divided into a homogeneous network communication system and a heterogeneous network communication system, wherein the interconnected base stations in the homogeneous network communication system are macro cell base stations, and the interconnected base stations in the heterogeneous communication system can be macro cells. Base station and micro cell base station. All the base stations in the above-mentioned CoMP communication system serve the terminal together. The terminal is usually referred to as a UE (User Equipment) or a user terminal. 1A is a schematic diagram of an application scenario of a CoMP communication system of a heterogeneous network: FIG. 1A includes a macro cell and a micro cell with a lower transmit power, where the macro cell and the micro cell jointly provide services for the UE, in the macro cell. The site is an eNB, and the site in the micro zone is an RRH. Each micro cell has an independent cell identifier as an independent cell. For example, the macro cell in FIG. 1A has cel l-idl, and the three micro cells have cell-id2, cel l-id3, and cel l-id4, respectively. FIG. 1B is a schematic diagram of an application scenario of a CoMP communication system of another heterogeneous network: FIG. 1B includes a macro cell and a micro cell with a lower transmit power, where the macro cell and the micro cell jointly provide services for the UE, and the macro cell The site within the micro zone is the eNB, and the site in the micro zone is the RRH. The difference from the scenario shown in FIG. 1A is that the micro cell is not an independent cell, and therefore does not have independent cell identifiers. The micro cell shares a cell identity with the macro cell, and the site in the macro cell is an eNB, and the site in the micro cell is RRH, for example, the cell identifiers of the macro cell and the three micro cells in FIG. 1B are all cel l-idl. For one terminal, each station that performs CoMP for the terminal sends different CSI-RSs, and the terminal performs channel estimation by receiving CSI-RSs from each station, and performs link signal quality between the terminal and the station. to evaluate. Specifically, the terminal obtains CSI-RS configuration information of each station, and thereby receives the CSI-RS sent by the station by using the CSI-RS configuration information, so as to further measure the CSI-RS. In the embodiment of the present invention, a correspondence between CSI-RS configuration information and a site may be established. In this embodiment, a set of CSI-RS configuration information is also referred to as a CSI-RS configuration information, and may be a set of uplink CSI-RS configuration information or downlink CSI-RS configuration information, which may correspond to one transmission point. . Based on these CSI-RS configuration information, a site for performing uplink communication can be determined. The uplink communication embodiment of the present invention is described in detail below on the basis of the foregoing CoMP communication system. The uplink communication point of the present invention is different from the uplink transmission point of the terminal in the prior art. The terminal in the terminal determines the uplink transmission point of the terminal according to the configuration information sent by the base station, so as to improve the uplink communication quality of the terminal.

Referring to FIG. 2, it is a flow chart of the first embodiment of the uplink communication method of the present invention: Step 201: The terminal determines an uplink transmission point of the terminal according to the configuration information sent by the base station. The terminal may determine the uplink transmission point of the terminal in the following manners: Mode 1: The terminal receives at least one set of uplink CSI-RS (Channel State Information Reference Signal) configuration information sent by the base station, each set The uplink CSI-RS configuration information corresponds to an uplink transmission point. When the terminal receives a set of uplink CSI-RS configuration information, the uplink transmission point corresponding to the uplink CSI-RS configuration information is used as the uplink transmission point of the terminal, and the terminal receives the uplink transmission point. Obtaining the signal quality of each uplink transmission point by measuring the uplink CSI-RS corresponding to each uplink CSI-RS configuration information of at least two sets of uplink CSI-RS configuration information, when at least two sets of uplink CSI-RS configuration information are obtained, The uplink transmission point with the best signal quality is used as the uplink transmission point of the terminal. Manner 2: The terminal receives multiple sets of CSI-RS configuration information sent by the base station, and determines a transmission point corresponding to a set of CSI-RS configuration information in multiple sets of CSI-RS configuration information as an uplink transmission point of the terminal. Manner 3: The terminal receives multiple sets of CSI-RS configuration information sent by the base station, and determines a transmission point corresponding to a set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information as the master node of the terminal, or the corresponding The cell corresponding to the transmission point is determined as the primary cell of the terminal, and the transmission point corresponding to the primary node or the primary cell is determined as the uplink transmission point of the terminal. Manner 4: The terminal receives at least one set of downlink CSI-RS configuration information sent by the base station, and each set of downlink CSI-RS configuration information corresponds to one downlink transmission point, and each downlink CSI corresponding to each downlink CSI-RS configuration information is measured. RS, obtain the signal quality or path loss of each downlink transmission point, select the downlink transmission point with the best signal quality, or the downlink transmission point with the smallest path loss as the uplink transmission point of the terminal. Step 202: The terminal performs uplink communication with an uplink transmission point of the terminal. The terminal calculates the uplink path loss between the terminal and the uplink transmission point of the terminal, and the terminal determines the communication resource according to the uplink path loss, and uses the communication resource to perform uplink communication with the uplink transmission point of the terminal. Specifically, the terminal may adjust the uplink transmit power by using the uplink path loss, perform uplink communication with the uplink transmission point of the terminal by using the uplink transmit power, or adjust the uplink TA (timing Advance timing advance) by using the uplink path loss. Using the TA to perform uplink communication with the uplink transmission point of the terminal, or the terminal also passes The preamble (preamble pilot) code is selected according to the uplink path loss, and the uplink random access is performed according to the selected preamble code and uplink communication is performed with the uplink transmission point of the terminal. It can be seen from the foregoing embodiment that the terminal can determine the uplink transmission point of the terminal from multiple sites in the CoMP communication system according to the configuration information sent by the base station, instead of directly using the downlink access point of the terminal as the uplink access point, The cell in which the determined uplink transmission point is located has a good uplink signal quality. Correspondingly, the terminal can obtain a closer uplink path loss according to the uplink transmission point, so that the terminal can select the appropriate preamble code to perform the accuracy. Uplink power control, thereby improving the quality of uplink communication. 3 is a flowchart of a second embodiment of an uplink communication method according to the present invention. The embodiment shows a process for determining, by an uplink transmission point, and performing uplink communication according to uplink CSI-RS configuration information sent by a base station: Step 301: Terminal The uplink CSI-RS configuration information sent by the base station is received, and each uplink CSI-RS configuration information corresponds to one uplink transmission point. In the embodiment of the present invention, the CSI-RS configuration information mainly refers to CSI-RS information used by the site, and each set of CSI-RS configuration information includes at least one of the following information: CSI-RS sequence, CSI-RS transmission Time-frequency resource configuration, transmission period, CSI-RS configuration identifier, CSI-RS configuration index number, antenna port transmitting the CSI-RS, number of antennas used to transmit the CSI-RS, subframe configuration, CSI- Information such as RS resources. Thereby, the terminal can receive the CSI-RS signal by using the CSI-RS configuration information, and then measure the CSI-RS signal or perform feedback on the quality of the measurement signal. In the CoMP communication system, CSI-RS configuration information of different base stations can be sent to the terminal through one base station. Here, a set of CSI-RS configurations may also be referred to as one CSI-RS configuration information, and one CSI-RS configuration information is a configuration of one CSI-RS sent for each station. Each set of uplink CSI-RS configuration information corresponds to one uplink transmission point, specifically for one terminal, different transmission points send different CSI-RSs to the terminal, that is, one CSI-RS comes from one transmission point. The terminal needs to obtain the configuration information of the one CSI-RS to receive the CSI-RS sent by the transmission point by using the configuration information. Therefore, each set of uplink CSI-RS configuration information corresponds to one uplink transmission point. Further, the terminal evaluates the signal quality of each uplink transmission point by measuring the CSI-RS signal sent by each uplink transmission point, thereby determining an optimal uplink transmission point. The configuration information of the CSI-RS may be accessed by the serving base station of the terminal at the terminal, or the terminal may be sent to the terminal during the handover process. The terminal may receive a CoMP set (CoMP set) sent by the base station. The CoMP set (CoMP set) contains configuration information of at least one CSI-RS. The CoMP set is directly or indirectly involved in providing CoMP services to the terminal. A collection of sites, where the CoMP collection should be understood as information about the collection of these sites.

The CoMP set can be any set as follows: CoMP Resource Management Set, Cooperating set CoMP measurement set (Measurement set) Radio Resource Management RM (Resource Management) set (RM set ). Or Extended Measurement set. The embodiments of the present invention are only examples, and the collection is not limited.

CoMP Collaboration Set: A collection of sites that transmit data directly and/or indirectly to a terminal on the same time-frequency resource.

CoMP Measurement Set: A collection of stations that measure the channel state between the terminal and these stations. An extended measurement set is an extension based on this collection. CoMP Radio Resource Management RM Set: A collection of cells that let the terminal perform radio resource management measurements. The foregoing CoMP set may be divided into an uplink CoMP set and a downlink CoMP set. The terminal receives the uplink CSI-RS configuration information sent by the base station, and the terminal may receive the CoMP set sent by the base station, where the CoMP set includes the uplink CSI-RS configuration information (or the CSI of the uplink point). RS configuration information), the CoMP set may also include downlink CSI-RS configuration information (or CSI-RS configuration information of the downlink point). Alternatively, the terminal may receive the uplink CSI-RS configuration information sent by the base station, and the terminal may receive the CoMP set sent by the base station, where the CoMP set includes the uplink transmission point and the downlink transmission point. CSI-RS configuration information corresponding to the point. At the same time, the base station can also provide the CSI-RS configuration information of the downlink point only to the terminal. Step 302: Determine whether only one set of uplink CSI-RS configuration information is received. If yes, go to step 303; otherwise, go to step 304. Step 303: The uplink transmission point corresponding to the uplink CSI-RS configuration information is used as the uplink transmission point of the terminal, and step 305 is performed. When the uplink CSI-RS configuration information sent by the base station is only one set, the terminal determines the uplink transmission point corresponding to the set of uplink CSI-RS configuration information as the uplink transmission point of the terminal. Step 304: Measure each uplink CSI-RS corresponding to each uplink CSI-RS configuration information, and obtain each uplink transmission point. The signal quality is selected as the uplink transmission point of the terminal with the best uplink transmission point of the signal quality. When the uplink CSI-RS configuration information sent by the base station is greater than one set, the terminal measures the uplink CSI-RS corresponding to each set of uplink CSI-RS configuration information, and obtains a measurement result, where the measurement result reflects the signal of each uplink transmission point. Quality, select one of the uplink transmission points with the best signal quality from the measurement results as the uplink transmission point of the terminal. The measurement result may be any one of the following information: RSRP (Reference Signal Receiving Power), RSRQ (Reference Signal Receiving Quality), SINR (Signal to Interference plus Noise Ratio) SNR (Signal Noise Ratio), RSSI (Received Signal Strength Indication), CQI (Channel Quality Indicator), PMI (Payload Missing Indication, PMI) The payload loss indication) and the like are not specifically limited herein. Step 305: The terminal calculates an uplink path loss between the determined uplink transmission point. Step 306: Perform uplink communication by using uplink path loss. The terminal can adjust the uplink transmit power by using the uplink path loss, or the terminal can adjust the uplink TA by using the uplink path loss, or the terminal performs a random access process, and the terminal uses the uplink path loss between the terminal and the uplink transmission point to select the preamble. Code, and perform uplink random access according to the selected preamble code. When the terminal selects the preamble code by using the uplink path loss, the pre-set path loss threshold is obtained. When the calculated uplink path loss is less than the path loss threshold, the preamble in the preamble B group is selected. Otherwise, the preamble in the preamble group A is selected. After selecting the appropriate preamble code, the terminal uses the determined uplink access resource of the uplink access point to send the selected preamble code for random access. It can be seen from the above embodiment that the terminal can determine the uplink transmission point of the terminal according to the uplink CSI-RS configuration information sent by the base station, instead of directly using the downlink access point of the terminal as the uplink access point, and thus measuring according to the uplink transmission point. It is closer to the actual uplink path loss, so that the terminal can select the appropriate preamble code to perform accurate uplink power control, thereby improving the uplink communication quality. FIG. 4 is a flowchart of a third embodiment of an uplink communication method according to the present invention. The embodiment shows a process for determining, by a terminal, an uplink transmission point according to multiple sets of CSI-RS configuration information sent by a base station, and performing uplink communication: Step 401: The terminal receives multiple sets of CSI-RS configuration information sent by the base station. In the embodiment of the present invention, the CSI-RS configuration information mainly refers to CSI-RS information used by the site, and each set of CSI-RS The configuration information includes at least one of the following information: a CSI-RS sequence, a time-frequency resource configuration sent by the CSI-RS, a sending period, a CSI-RS configuration identifier, a CSI-RS configuration index number, and a CSI-RS sending The antenna port, the number of antennas used to transmit the CSI-RS, the subframe configuration, and the CSI-RS resources. Thereby, the terminal can receive the CSI-RS signal by using the CSI-RS configuration information, and then measure the CSI-RS signal or perform feedback on the quality of the measurement signal. In the CoMP communication system, CSI-RS configuration information of different base stations can be sent to the terminal through one base station. Step 402: Determine a transmission point corresponding to a set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information as an uplink transmission point of the terminal. The terminal can determine the transmission point corresponding to a set of CSI-RS configuration information in multiple sets of CSI-RS configuration information as the uplink transmission point of the terminal in the following two ways: The first mode: The terminal can configure multiple sets of CSI-RS The transmission point corresponding to a set of CSI-RS configuration information indicated in the information is determined as the uplink transmission point of the terminal. That is, the base station provides an indication that the transmission point corresponding to a certain set of CSI-RS configuration information of the multiple sets of CSI-RS configuration information is an uplink transmission point of the terminal. Specifically, when the CSI-RS configuration information is provided, the indication information is carried, and the transmission point corresponding to a certain set of CSI-RS configuration information is an uplink transmission point of the terminal. The indication information may be: adding one bit information to one CSI-RS configuration information to distinguish from other CSI-RS configuration information; the network side may also separately use the indication information to indicate a transmission corresponding to a certain set of CSI-RS configuration information. The point is the uplink transmission point of the terminal. The specific manner of indicating information may be different, and details are not described herein again. The terminal may determine, according to the indication information that the base station adds in different CSI-RS configuration information, the transmission point corresponding to the Nth set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information, as the uplink transmission of the terminal. The first set of CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information, and may be, for example, the first set of CSIs in multiple sets of CSI-RS configuration information. The RS configuration information; or, the terminal may determine, as the uplink transmission point of the terminal, the transmission point corresponding to the CSI-RS configuration information sent on the port indicated by the multiple sets of CSI-RS configuration information, when the terminal receives the uplink transmission point from the port. When the CSI-RS configuration information is obtained, the transmission point corresponding to the CSI-RS configuration information may be determined as the uplink transmission point of the terminal. The second mode: The terminal may also determine, as the uplink transmission point of the terminal, a transmission point corresponding to a preset set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information. That is, the transmission corresponding to a certain set of CSI-RS configuration information in multiple sets of CSI-RS configuration information is adopted in a preset manner (specifically, the terminal negotiates with the base station in advance, or the default manner of the terminal and the base station) The point acts as the uplink transmission point of the terminal. According to the result of the pre-negotiation between the terminal and the base station, the terminal may determine, by default, the transmission point corresponding to the Nth set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information as the uplink transmission point of the terminal, and the Nth CSI. The RS configuration information may be any one of the CSI-RS configuration information of the multiple sets of CSI-RS configuration information, for example, may be the first set of CSI-RS configuration information in multiple sets of CSI-RS configuration information; or, the terminal may also By default, the transmission point corresponding to the CSI-RS configuration information sent by the port in the CSI-RS configuration information is determined as the uplink transmission point of the terminal. When the terminal receives the CSI-RS configuration information from the port, The transmission point corresponding to the CSI-RS configuration information may be determined as an uplink transmission point of the terminal. Step 403: The terminal calculates an uplink path loss between the determined uplink transmission point. Wherein, when the terminal performs a random access procedure, the terminal calculates an uplink path loss between the uplink transmission point and the uplink transmission point. Step 404: Perform uplink communication by using the uplink path loss. The terminal can adjust the uplink transmit power by using the uplink path loss, or the terminal can adjust the uplink TA by using the uplink path loss, or the terminal also selects the preamble code by using the uplink path loss, and performs uplink random access according to the selected preamble code. When the terminal selects the preamble code by using the uplink path loss, the pre-set path loss threshold is obtained. When the calculated uplink path loss is less than the path loss threshold, the preamble in the preamble B is selected. Otherwise, the preamble in the preamble A is selected. After the appropriate preamble code, the terminal uses the determined uplink access resource of the uplink access point to send the selected preamble code for random access. As can be seen from the foregoing embodiment, the terminal can determine the uplink transmission point of the terminal according to the multiple sets of CSI-RS configuration information sent by the base station, instead of directly using the downlink access point of the terminal as the uplink access point, thereby ensuring the determined uplink. The cell in which the transmission point is located has a good uplink signal quality. Correspondingly, the terminal can measure the uplink path loss closer to the actual distance according to the uplink transmission point, so that the terminal can select an appropriate preamble code to perform accurate uplink power control. Thereby improving the quality of uplink communication. Referring to FIG. 5, it is a flowchart of a fourth embodiment of an uplink communication method according to the present invention. The embodiment shows that a terminal determines a primary node or a primary cell of a terminal according to CSI-RS configuration information sent by a base station, and further determines an uplink transmission point of the terminal. Therefore, the process of uplink communication is performed: Step 501: The terminal receives multiple sets of CSI-RS configuration information sent by the base station. In the embodiment of the present invention, the CSI-RS configuration information mainly refers to CSI-RS information used by the site, and each set of CSI-RS configuration information includes at least one of the following information: CSI-RS sequence, CSI-RS transmission Time-frequency resource configuration, hair The transmission period, the CSI-RS configuration identifier, the CSI-RS configuration index number, the antenna port that transmits the CSI-RS, the number of antennas used to transmit the CSI-RS, the subframe configuration, and the CSI-RS resource. Thereby, the terminal can receive the CSI-RS signal by using the CSI-RS configuration information, and then measure the CSI-RS signal or perform feedback on the quality of the measurement signal. In the CoMP communication system, CSI-RS configuration information of different base stations can be sent to the terminal through one base station. Step 502: Determine a transmission point corresponding to a set of CSI-RS configuration information in multiple sets of CSI-RS configuration information as a primary node of the terminal, or determine a cell corresponding to the corresponding transmission point as a primary cell of the terminal. The terminal may determine, as the master node of the terminal, a transmission point corresponding to a set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, or determine the cell corresponding to the corresponding transmission point as the master of the terminal. Cell: The first mode: The terminal may determine a transmission point corresponding to a set of CSI-RS configuration information indicated in multiple sets of CSI-RS configuration information as a primary node of the terminal, or determine a cell corresponding to the corresponding transmission point. It is the primary cell of the terminal. The indication information provided by the base station indicates that the transmission point corresponding to a certain set of CSI-RS configuration information of the multiple sets of CSI-RS configuration information is the primary node of the terminal, or the cell corresponding to the corresponding transmission point is determined as the primary cell of the terminal. . Specifically, when the CSI-RS configuration information is provided, the indication information is carried, indicating that the transmission point corresponding to a certain set of CSI-RS configuration information is the primary node of the terminal, or corresponding to the corresponding transmission point. The cell is determined to be the primary cell of the terminal. The indication information may be: adding one bit information to one CSI-RS configuration information to distinguish from other CSI-RS configuration information; the network side may also separately use the indication information to describe the transmission corresponding to a certain set of CSI-RS configuration information. The point is the master node of the terminal, or the cell corresponding to the corresponding transmission point is determined as the primary cell of the terminal. The specific manner of indicating information may be different, and details are not described herein again. The terminal may determine, as the primary node of the terminal, the transmission point corresponding to the Nth set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information, according to the indication information added by the base station in different CSI-RS configuration information, or Determining the cell corresponding to the corresponding transmission point as the primary cell of the terminal, where the Nth set of CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information, for example, The first set of CSI-RS configuration information in the CSI-RS configuration information; or the terminal may also transmit the CSI-RS configuration information corresponding to the CSI-RS configuration information sent by the port indicated in the multiple sets of CSI-RS configuration information. Determining to be the primary node of the terminal, or determining the cell corresponding to the corresponding transmission point as the primary cell of the terminal, and when the terminal receives the CSI-RS configuration information from the port, the CSI-RS configuration information may be corresponding. The transmission point is determined as the primary node of the terminal, or the cell corresponding to the corresponding transmission point is determined as the primary cell of the terminal. The second mode: the terminal may also determine, as the primary node of the terminal, a transmission point corresponding to a preset set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, or corresponding to the corresponding transmission point. The cell is determined to be the primary cell of the terminal. That is, the transmission corresponding to a certain set of CSI-RS configuration information in multiple sets of CSI-RS configuration information is adopted in a preset manner (specifically, a manner of negotiating with the base station in advance or a default manner of the terminal and the base station) The point is the master node of the terminal, or the cell corresponding to the corresponding transmission point serves as the primary cell of the terminal. The terminal may determine, by default, the transmission point corresponding to the Nth set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information as the primary node of the terminal, or the corresponding transmission point, according to the result of the pre-negotiation between the terminal and the base station. The corresponding cell is determined as the primary cell of the terminal, and the Nth set of CSI-RS configuration information is any one of the CSI-RS configuration information of the multiple sets of CSI-RS configuration information, for example, may be in multiple sets of CSI-RS configuration information. The first set of CSI-RS configuration information; or, the terminal may determine, by default, the transmission point corresponding to the CSI-RS configuration information sent by one of the multiple sets of CSI-RS configuration information as the primary node of the terminal, or the corresponding The cell corresponding to the transmission point is determined as the primary cell of the terminal. When the terminal receives the CSI-RS configuration information from the port, the transmission point corresponding to the CSI-RS configuration information may be determined as the master node of the terminal, or The cell corresponding to the corresponding transmission point is determined as the primary cell of the terminal. The primary node of the terminal (which may be an anchor node, a primary node, a primary point, etc.) may also be referred to as a primary site, and may specifically include: a downlink transmission point that sends control signaling; or, a macro base station or a transmission point corresponding to the macro cell; or a transmission point corresponding to the primary primary cell primary cel l; or a transmission point corresponding to the serving cell of the user terminal (Serving cell). The primary cell of the terminal (which may be referred to as a primary cel l, an anchor cel l, etc.) may include: a cell that sends control signaling for the user equipment; or a cell corresponding to a downlink transmission point that sends control signaling; or a cell corresponding to the macro base station; or, in the terminal RRC connection establishment, or RRC connection re-establishment, or a handover process, providing the terminal with a NAS (Non-Access-Stratum) mobility information; or A cell that provides a security input to the terminal during an RRC connection established by the terminal, or during handover. For the specific security input mode, refer to the prior art, which is not limited in this embodiment. The foregoing sending control signaling may include transmitting at least one of the following signaling information: transmitting a PHICH (Physical Hybrid Automatic Repeat-reQuest (HARQ) Indicator Channel), and transmitting a PCFICH (Physical Control Format Indicator Channel) Indicating channel), transmitting information on the PDCCH (Physical Downlink Control Channel), transmitting system messages, transmitting physical layer signaling, and transmitting MAC (Media Access Control, media access control) Layer) Message, send RRC (Radio Resource Control Layer) message. Step 503: Determine a transmission point corresponding to the primary node or the primary cell as an uplink transmission point of the terminal. Step 504: The terminal calculates an uplink path loss between the determined uplink transmission point. When the uplink data arrives, the downlink data arrives, or the radio link fails, the terminal performs a random access procedure, and the terminal calculates the uplink path loss between the uplink transmission point and the uplink transmission point. Step 505: Perform uplink communication by using uplink path loss. The terminal can adjust the uplink transmit power by using the uplink path loss, or the terminal can adjust the uplink TA by using the uplink path loss, or the terminal also selects the preamble code by using the uplink path loss, and performs uplink random access according to the selected preamble code. When the terminal selects the preamble code by using the uplink path loss, the pre-set path loss threshold is obtained. When the calculated uplink path loss is less than the path loss threshold, the preamble in the preamble B is selected. Otherwise, the preamble in the preamble A is selected. After the appropriate preamble code, the terminal uses the determined uplink access resource of the uplink access point to send the selected preamble code for random access. It can be seen from the foregoing embodiment that the terminal can determine the primary node or the primary cell of the terminal according to multiple sets of CSI-RS configuration information sent by the base station, instead of directly using the downlink access point of the terminal as the uplink access point, The cell in which the uplink transmission point is located has a good uplink signal quality. Correspondingly, the terminal can obtain a closer actual path loss according to the uplink transmission point, so that the terminal can select an appropriate preamble code to perform accurate uplink power. Control, thereby improving the quality of uplink communication. FIG. 6 is a flowchart of a fifth embodiment of an uplink communication method according to the present invention. The embodiment shows a process for determining, by a terminal, an uplink transmission point according to downlink CSI-RS configuration information sent by a base station, and performing uplink communication: Step 601: Terminal The downlink CSI-RS configuration information sent by the base station is received, and each downlink CSI-RS configuration information corresponds to one downlink transmission point. In the embodiment of the present invention, the CSI-RS configuration information mainly includes a time-frequency resource location for receiving a CSI-RS and a corresponding port number. In the CoMP communication system, CSI-RS configuration information of different base stations can be sent to the terminal through one base station. The terminal may receive a CoMP set (CoMP set) including the downlink CSI-RS configuration information sent by the base station, where This CoMP set can be referred to as a downlink CoMP set. The downlink CoMP set includes at least one of the following sets: a downlink CoMP cooperative set, a downlink CoMP measurement set, a downlink radio resource management RRM (Radio Resources Management) set (RRM set), and a downlink Extended Measurement set. Step 602: Measure each downlink CSI-RS corresponding to each downlink CSI-RS configuration information, and obtain signal quality or path loss of each downlink transmission point. Step 603: Select a downlink transmission point with the best signal quality or a downlink transmission point with the smallest path loss as the uplink transmission point of the terminal. When obtaining the downlink transmission point with the best signal quality, the terminal measures the downlink CSI-RS corresponding to each downlink CSI-RS configuration information, obtains the RSRP of each downlink transmission point, and selects a downlink transmission point with the best signal quality. As the uplink transmission point of the terminal. When obtaining the downlink transmission point with the smallest path loss, the terminal measures the downlink CSI-RS corresponding to each downlink CSI-RS configuration information, obtains the transmission power of each downlink transmission point, and obtains the measured transmission power and the actual received transmission power. The transmit power is subtracted, and the path loss of the downlink transmission point is obtained. The downlink transmission point with the smallest path loss is selected as the uplink transmission point of the terminal from all the path losses. Step 604: The terminal calculates an uplink path loss between the determined uplink transmission point. When the uplink data arrives, the downlink data arrives, or the radio link fails, the terminal performs a random access procedure, and the terminal calculates the uplink path loss between the uplink transmission point and the uplink transmission point. Step 605: Perform uplink communication by using uplink path loss. The terminal can adjust the uplink transmit power by using the uplink path loss, or the terminal can adjust the uplink TA by using the uplink path loss, or the terminal also selects the preamble code by using the uplink path loss, and performs uplink random access according to the selected preamble code. When the terminal selects the preamble code by using the uplink path loss, the preset path loss threshold is obtained. When the calculated uplink path loss is less than the path loss threshold, the preamble in the preamble B is selected. Otherwise, the preamble in the preamble A is selected. After selecting the appropriate preamble code, the terminal sends the selected preamble code by using the determined uplink access resource of the uplink access point to perform random access. It can be seen from the foregoing embodiment that the terminal can determine the terminal according to multiple sets of downlink CSI-RS configuration information sent by the base station. The uplink transmission point, instead of directly using the downlink access point of the terminal as the uplink access point, can ensure that the determined cell of the uplink transmission point has better uplink signal quality, and correspondingly, the terminal can according to the uplink transmission point. The measurement gets closer to the actual uplink path loss, so that the terminal can select the appropriate preamble code to perform accurate uplink power control, thereby improving the uplink communication quality. FIG. 7 is a flowchart of a sixth embodiment of an uplink communication method according to the present invention. The embodiment shows a process in which a terminal directly receives an uplink path loss message sent by a base station, and performs uplink communication: Step 701: The terminal receives the content sent by the base station. Upstream path loss message. In this embodiment, after the terminal accesses the network, the base station may directly send a message including the uplink path loss to the terminal, so that the terminal directly performs uplink communication according to the uplink path loss. The base station may periodically update the latest uplink path loss in the system by sending a message periodically. Step 702: The terminal determines the communication resource according to the uplink path loss, and uses the communication resource to perform uplink communication with the uplink transmission point of the terminal. The terminal may adjust the uplink transmit power by using the uplink path loss, and use the uplink transmit power to perform uplink communication with the uplink transmission point of the terminal; the terminal may also adjust the uplink timing advance TA by using the uplink path loss, and utilize the TA and the The uplink transmission point of the terminal performs uplink communication; the terminal may also select the preamble preamble by using the uplink path loss, perform uplink random access according to the selected preamble code, and perform uplink communication with the uplink transmission point of the terminal. When the terminal selects the preamble code by using the uplink path loss, the preset path loss threshold is obtained. When the calculated uplink path loss is less than the path loss threshold, the preamble in the preamble B is selected. Otherwise, the preamble in the preamble A is selected. After selecting the appropriate preamble code, the terminal sends the selected preamble code by using the determined uplink access resource of the uplink access point to perform random access. As can be seen from the foregoing embodiment, the downlink access point of the terminal is directly used as the uplink access point, so that the uplink path loss with relatively low accuracy is easily obtained, because the terminal can perform the uplink path loss according to the base station. Uplink communication, and the uplink path loss is relatively accurate, so that the terminal can select an appropriate preamble code to perform accurate uplink power control, thereby improving uplink communication quality. Corresponding to the embodiment of the uplink communication method of the present invention, the present invention also provides an embodiment of an uplink communication terminal that performs the uplink communication method. Referring to FIG. 8A, it is a block diagram of a first embodiment of an uplink communication terminal according to the present invention: The terminal includes: a determining unit 810 and a communication unit 820. The determining unit 810 is configured to determine an uplink transmission point of the terminal according to the configuration information sent by the base station, and the communication unit 820 is configured to perform uplink communication with the uplink transmission point of the terminal. Referring to FIG. 8B, which is a block diagram of a first embodiment of the determining unit in FIG. 8A: the determining unit 810 may include: a first configuration information receiving subunit 8101, configured to receive at least one set of uplink signal state information reference signals CSI- The RS configuration information, each set of the uplink CSI-RS configuration information corresponds to one uplink transmission point; the first uplink transmission point determining subunit 8102 is configured to: when receiving a set of uplink CSI-RS configuration information, The uplink transmission point corresponding to the uplink CSI-RS configuration information is used as the uplink transmission point of the terminal, and when at least two sets of uplink CSI-RS configuration information are received, each set of at least two sets of uplink CSI-RS configuration information is measured. The uplink CSI-RS corresponding to the uplink CSI-RS configuration information obtains the signal quality of each uplink transmission point, and selects the uplink transmission point with the best signal quality as the uplink transmission point of the terminal. Referring to FIG. 8C, it is a block diagram of a second embodiment of the determining unit in FIG. 8A. The determining unit 810 may include: a second configuration information receiving subunit 8103, configured to receive multiple sets of CSI-RS configuration information sent by the base station; The transmission point determining sub-unit 8104 is configured to determine, as the uplink transmission point of the terminal, a transmission point corresponding to a set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information. The second uplink transmission point determining subunit 814 may include at least one of the following subunits (not shown in FIG. 8C): a first indication determining subunit, configured to indicate in the multiple sets of CSI-RS configuration information The transmission point corresponding to the CSI-RS configuration information is determined as the uplink transmission point of the terminal; the first indication determining sub-unit may be specifically configured to use the Nth indicated in the multiple sets of CSI-RS configuration information. The transmission point corresponding to the set of CSI-RS configuration information is determined as an uplink transmission point of the terminal, and the Nth set of CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information. Or, the transmission point corresponding to the CSI-RS configuration information sent by the port indicated in the multiple sets of CSI-RS configuration information is determined as the uplink transmission point of the terminal; the N is a natural number, and the N sets are Less than multiple sets; a first preset determining subunit, configured to determine, as the uplink transmission point of the terminal, a transmission point corresponding to a preset set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information; The determining subunit may be specifically configured to determine, as the uplink transmission point of the terminal, a transmission point corresponding to the Nth set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, where the Nth CSI- The RS configuration information is any one of the multiple sets of CSI-RS configuration information, or the CSI-RS configuration information sent by one of the multiple sets of CSI-RS configuration information. The transmission point is determined as an uplink transmission point of the terminal; the N is a natural number, and the N sets are less than multiple sets. Referring to FIG. 8D, which is a block diagram of a third embodiment of the determining unit in FIG. 8A: the determining unit 810 may include: a third configuration information receiving subunit 8105, where the terminal receives multiple sets of CSI-RS configuration information sent by the base station; The cell determining sub-unit 8106 determines a transmission point corresponding to a set of CSI-RS configuration information of the multiple sets of CSI-RS configuration information as a primary node of the terminal, or determines a cell corresponding to the transmission point as a The primary cell of the terminal; the third uplink transmission point determining sub-unit 8107 determines the transmission point corresponding to the primary node or the primary cell as the uplink transmission point of the terminal. The primary node or primary cell determining subunit may include at least one of the following subunits (not shown in FIG. 8D): a second indication determining subunit, configured to indicate one of the multiple sets of CSI-RS configuration information The transmission point corresponding to the CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal; the second indication determining sub-unit may be specifically used for The transmission point corresponding to the Nth set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal And the Nth CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information, or the port indicated by the multiple sets of CSI-RS configuration information. The transmission point corresponding to the sent CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal; the second preset determining subunit, Multiple sets of CSI-RS configuration letters The transmission point corresponding to the preset set of CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal; the second preset determinant The unit may be specifically configured to determine, as the primary node of the terminal, a transmission point corresponding to the Nth set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, or the transmission point The corresponding cell is determined as the primary cell of the terminal, and the Nth set of CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information, or the multiple sets are The transmission point corresponding to the CSI-RS configuration information sent by the CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal; N is a natural number, and N sets are less than multiple sets. Referring to FIG. 8E, it is a block diagram of a fourth embodiment of the determining unit in FIG. 8A. The determining unit 810 may include: a fourth configuration information receiving subunit 8108, configured to receive downlink CSI-RS configuration information sent by the base station, each set of The downlink CSI-RS configuration information corresponds to one downlink transmission point; the configuration information measurement sub-unit 8109 is configured to measure each downlink CSI-RS corresponding to each set of downlink CSI-RS configuration information, and obtain each downlink transmission point. Signal quality, or path loss; The fourth uplink transmission point determining subunit 8110 selects a downlink transmission point with the best signal quality or a downlink transmission point with the smallest path loss as the uplink transmission point of the terminal. Referring to FIG. 8F, which is a block diagram of an embodiment of the communication unit in FIG. 8A: the communication unit 820 may include: an uplink calculation subunit 8201, configured to calculate an uplink path loss between the terminal and an uplink transmission point of the terminal; The unit 8202 is configured to determine, according to the uplink path loss, a communication resource, and use the communication resource to perform uplink communication with an uplink transmission point of the terminal. The uplink communication subunit may be specifically configured to adjust uplink transmit power by using the uplink path loss, perform uplink communication with the uplink transmission point of the terminal by using uplink transmit power, and/or adjust uplink timing by using the uplink path loss. Advancing TA, using the TA to perform uplink communication with the uplink transmission point of the terminal; and/or selecting a preamble preamble by using the uplink path loss, and performing uplink random access according to the selected preamble code and uplink transmission with the terminal Point for upstream communication. Referring to FIG. 9, a block diagram of a second embodiment of an uplink communication terminal according to the present invention includes: a receiving unit 910 and a communication unit 920. The receiving unit 910 is configured to receive, by the base station, a message that includes an uplink path loss. The communication unit 920 is configured to determine, according to the uplink path loss, a communication resource, and use the communication resource to perform uplink communication with an uplink transmission point of the terminal. The communication unit 920 may be specifically configured to: adjust uplink transmit power by using the uplink path loss, perform uplink communication with the uplink transmission point of the terminal by using uplink transmit power, and/or adjust uplink timing advance by using the uplink path loss. TA, using the TA to perform uplink communication with the uplink transmission point of the terminal; and/or selecting a preamble preamble by using the uplink path loss, and performing uplink random access according to the selected preamble code and an uplink transmission point with the terminal Perform upstream communication. As can be seen from the foregoing embodiment, the terminal determines an uplink transmission point of the terminal according to the configuration information sent by the base station, and the terminal performs uplink communication with the uplink transmission point of the terminal. When the embodiment of the present invention is applied to a CoMP communication system, the terminal may determine the uplink transmission point of the terminal from multiple sites in the CoMP communication system according to the configuration information sent by the base station, instead of directly using the downlink access point of the terminal as the uplink. The access point can ensure that the cell in which the determined uplink transmission point is located has better uplink signal quality. Correspondingly, the terminal can measure the uplink path loss closer to the actual distance according to the uplink transmission point, so that the terminal can select the appropriate one. The preamble code performs accurate uplink power control to improve the quality of the uplink communication. It will be apparent to those skilled in the art that the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, and the computer software product may be stored in a storage medium, such as a ROM/RAM. , a diskette, an optical disk, etc., comprising instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or in certain portions of the embodiments. The various embodiments in the present specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment. The embodiments of the present invention described above are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Rights request

An uplink communication method, the method comprising:

The terminal determines an uplink transmission point of the terminal according to the configuration information sent by the base station;

The terminal performs uplink communication with an uplink transmission point of the terminal.

The method according to claim 1, wherein the terminal performing uplink communication with the uplink transmission point of the terminal comprises:

The uplink path loss between the terminal computing terminal and the uplink transmission point of the terminal;

The terminal determines a communication resource according to the uplink path loss, and performs uplink communication with the uplink transmission point of the terminal by using the communication resource.

The method according to claim 2, wherein the terminal determines a communication resource according to the uplink path loss, and uses the communication resource to perform uplink communication with an uplink transmission point of the terminal, including at least one of the following: The terminal adjusts the uplink transmit power by using the uplink path loss, and uses the uplink transmit power to perform uplink communication with the uplink transmission point of the terminal;

The terminal adjusts the uplink timing advance TA by using the uplink path loss, and uses the TA to perform uplink communication with the uplink transmission point of the terminal;

The terminal selects the preamble preamble by using the uplink path loss, performs uplink random access according to the selected preamble code, and performs uplink communication with the uplink transmission point of the terminal.

The method according to any one of claims 1-3, wherein the determining, by the terminal, the uplink transmission point of the terminal according to the configuration information sent by the base station includes:

The terminal receives at least one set of uplink signal state information reference signal CSI-RS configuration information sent by the base station, and each set of the uplink CSI-RS configuration information corresponds to one uplink transmission point;

When the terminal receives a set of uplink CSI-RS configuration information, the uplink transmission point corresponding to the set of uplink CSI-RS configuration information is used as an uplink transmission point of the terminal, and the terminal receives at least two uplink CSI-RSs. When configuring the information, obtain the signal quality of each uplink transmission point by measuring the uplink CSI-RS corresponding to each uplink CSI-RS configuration information in at least two sets of uplink CSI-RS configuration information, and select the uplink transmission point with the best signal quality. As the uplink transmission point of the terminal.

The method according to claim 4, wherein the receiving, by the terminal, the at least one set of uplink CSI-RS configuration information sent by the base station comprises: receiving, by the terminal, the at least one set of uplink CSI-RS configuration information sent by the base station Collaborative multipoint transmission of CoMP sets; the method further comprising: extracting at least one set of uplink CSI-RS configuration letters from the CoMP set Interest rate

The CoMP set includes at least one of the following sets: an uplink CoMP cooperative set, an uplink CoMP measurement set, an uplink radio resource management RRM set, and an uplink extended measurement set.

The terminal receives multiple sets of CSI-RS configuration information sent by the base station;

And determining, by the transmission point corresponding to a set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, an uplink transmission point of the terminal.

The method according to claim 6, wherein the determining, by the transmission point corresponding to a set of CSI-RS configuration information of the multiple sets of CSI-RS configuration information, the uplink transmission point of the terminal includes :

Determining, by the transmission point corresponding to the set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information, an uplink transmission point of the terminal; or

A transmission point corresponding to a preset set of CSI-RS configuration information in the plurality of sets of CSI-RS configuration information is determined as an uplink transmission point of the terminal.

8. The method of claim 7 wherein:

Determining, by the transmission point corresponding to the set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information, the uplink transmission point of the terminal includes:

Determining, by the transmission point corresponding to the Nth set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, an uplink transmission point of the terminal, where the Nth set of CSI-RS configuration information is the multiple sets. Any set of CSI-RS configuration information in the CSI-RS configuration information; or

Determining, by the transmission point corresponding to the CSI-RS configuration information sent on one port indicated by the multiple sets of CSI-RS configuration information, an uplink transmission point of the terminal;

Determining, by the transmission point corresponding to the preset set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, the uplink transmission point of the terminal includes:

Determining, by the transmission point corresponding to the Nth set of CSI-RS configuration information of the multiple sets of CSI-RS configuration information, an uplink transmission point of the terminal, where the Nth set of CSI-RS configuration information is the multiple sets of CSI - any set of CSI-RS configuration information in the RS configuration information; or,

Determining, by the transmission point corresponding to the CSI-RS configuration information sent on one port of the multiple sets of CSI-RS configuration information, an uplink transmission point of the terminal;

The N is a natural number, and the N sets are less than a plurality of sets.

Determining a transmission point corresponding to a set of CSI-RS configuration information of the multiple sets of CSI-RS configuration information as a primary node of the terminal, or determining a cell corresponding to the transmission point as a primary cell of the terminal;

The transmission point corresponding to the primary node or the primary cell is determined as an uplink transmission point of the terminal.

10. The method of claim 9 wherein:

The master node of the terminal includes:

a downlink transmission point for transmitting the control signaling; or a transmission point corresponding to the macro base station or the macro cell; or a transmission point corresponding to the primary cell of the first primary cell; or a transmission point corresponding to the serving cell of the terminal;

The primary cell of the terminal includes:

a cell that sends control signaling to the terminal; or a cell corresponding to a downlink transmission point that sends control signaling; or a cell corresponding to the macro base station; or, when the terminal establishes an RRC connection, or re-establishes an RRC connection, or during a handover, A cell that provides non-access stratum NAS mobility information for the terminal; or, if the terminal establishes an RRC connection, or provides a secure input cell for the terminal.

The method according to claim 10, wherein the sending control signaling comprises transmitting at least one of the following signaling information:

Transmitting a hybrid automatic retransmission indication channel, transmitting a control information format indication channel, transmitting information on a control channel, transmitting a system message, transmitting physical layer signaling, transmitting a medium access control MAC layer message, and transmitting a radio resource control RRC layer message.

The method according to claim 9, wherein the transmission point corresponding to a set of CSI-RS configuration information in the plurality of sets of CSI-RS configuration information is determined as a master node of the terminal, or Determining the cell corresponding to the transmission point as the primary cell of the terminal includes:

Determining, as the primary node of the terminal, a transmission point corresponding to a set of CSI-RS configuration information indicated by the multiple sets of CSI-RS configuration information, or determining a cell corresponding to the transmission point as a primary cell of the terminal Or,

Determining, as the master node of the terminal, a transmission point corresponding to a preset set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, or determining a cell corresponding to the transmission point as the terminal Primary cell.

The method according to claim 12, wherein the transmission point corresponding to a set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information is determined as a master node of the terminal, Or the pair of transmission points The primary cell determined by the intended cell as the terminal includes:

Determining, by the transmission point corresponding to the Nth set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information, as a primary node of the terminal, or determining a cell corresponding to the transmission point as a master of the terminal a cell, the Nth set of CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information, or one port indicated by the multiple sets of CSI-RS configuration information The transmission point corresponding to the sent CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal; and the multiple sets of CSI-RS are configured A transmission point corresponding to a set of CSI-RS configuration information preset in the information is determined as a primary node of the terminal, or determining a cell corresponding to the transmission point as a primary cell of the terminal includes: The transmission point corresponding to the Nth set of CSI-RS configuration information in the CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal, the Nth Set of CSI-RS configuration information The CSI-RS configuration sets arbitrary set information CSI-RS configuration information; or

Determining, by the transmission node corresponding to the CSI-RS configuration information sent by one of the multiple sets of CSI-RS configuration information, as the primary node of the terminal, or determining the cell corresponding to the transmission point as the primary of the terminal Community

The N is a natural number, and the N sets are less than a plurality of sets.

The method according to any one of claims 1-3, wherein the determining, by the terminal, the uplink transmission point according to the CSI-RS configuration information sent by the base station includes:

The terminal receives at least one set of downlink CSI-RS configuration information sent by the base station, and each set of the downlink CSI-RS configuration information corresponds to one downlink transmission point;

Measure each downlink CSI-RS corresponding to each set of downlink CSI-RS configuration information, and obtain signal quality or path loss of each downlink transmission point;

The downlink transmission point with the best signal quality or the downlink transmission point with the smallest path loss is selected as the uplink transmission point of the terminal.

The method according to claim 14, wherein the receiving, by the terminal, the downlink CSI-RS configuration information sent by the base station comprises: receiving, by the terminal, a CoMP set that includes downlink CSI-RS configuration information sent by the base station; The method includes: extracting at least one set of uplink CSI-RS configuration information from a CoMP set;

The CoMP set includes at least one of the following sets: a downlink CoMP cooperative set, a downlink CoMP measurement set, a downlink radio resource management RRM set, and a downlink extended measurement set.

16. An uplink communication method, the method comprising:

Receiving, by the terminal, a message that is sent by the base station and includes an uplink path loss;

Determining, by the terminal, the communication resource according to the uplink path loss, and using the communication resource and the uplink transmission of the terminal Point up

The method according to claim 16, wherein the terminal determines a communication resource according to the uplink path loss, and uses the communication resource to perform uplink communication with an uplink transmission point of the terminal, where at least one of the following is included. Method - the terminal adjusts the uplink transmit power by using the uplink path loss, and performs uplink communication with the uplink transmission point of the terminal by using the uplink transmit power;

An uplink communication terminal, where the terminal includes:

a determining unit, configured to determine, according to configuration information sent by the base station, an uplink transmission point of the terminal;

The communication unit is configured to perform uplink communication with an uplink transmission point of the terminal.

The terminal according to claim 18, wherein the communication unit comprises:

An uplink calculation subunit, configured to calculate an uplink path loss between the terminal and the uplink transmission point of the terminal; an uplink communication subunit, configured to determine a communication resource according to the uplink path loss, and use the communication resource and the terminal The uplink transmission point performs uplink communication.

The terminal according to claim 19, wherein the uplink communication sub-unit is specifically configured to perform uplink communication with an uplink transmission point of the terminal by using at least one of the following manners:

Adjusting the uplink transmit power by using the uplink path loss, and performing uplink communication with the uplink transmission point of the terminal by using the uplink transmit power;

Adjusting the uplink timing advance TA by using the uplink path loss, and performing uplink communication with the uplink transmission point of the terminal by using the TA;

The preamble preamble is selected by the uplink path loss, and uplink random access is performed according to the selected preamble code and uplink communication is performed with the uplink transmission point of the terminal.

The terminal according to any one of claims 18 to 20, wherein the determining unit comprises: a first configuration information receiving subunit, configured to receive at least one set of uplink signal state information reference signals sent by the base station

CSI-RS configuration information, each set of the uplink CSI-RS configuration information corresponds to an uplink transmission point; a first uplink transmission point determining sub-unit, configured to: when an uplink CSI-RS configuration information is received, use an uplink transmission point corresponding to the set of uplink CSI-RS configuration information as an uplink transmission point of the terminal, when When receiving at least two sets of uplink CSI-RS configuration information, the signal quality of each uplink transmission point is obtained by measuring an uplink CSI-RS corresponding to each uplink CSI-RS configuration information in at least two sets of uplink CSI-RS configuration information, The uplink transmission point with the best signal quality is selected as the uplink transmission point of the terminal.

The terminal according to any one of claims 18 to 20, wherein the determining unit comprises: a second configuration information receiving subunit, configured to receive multiple sets of CSI-RS configuration information sent by the base station;

And a second uplink transmission point determining subunit, configured to determine, as the uplink transmission point of the terminal, a transmission point corresponding to a set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information.

The terminal according to claim 22, wherein the second uplink transmission point determining subunit comprises at least one of the following subunits:

a first indication determining subunit, configured to determine, as the uplink transmission point of the terminal, a transmission point corresponding to a set of CSI-RS configuration information indicated by the multiple sets of CSI-RS configuration information;

And a first preset determining subunit, configured to determine, as the uplink transmission point of the terminal, a transmission point corresponding to a preset set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information.

24. The terminal of claim 23, wherein:

The first indication determining subunit is specifically configured to use the Nth set indicated in the multiple sets of CSI-RS configuration information

The transmission point corresponding to the CSI-RS configuration information is determined as an uplink transmission point of the terminal, and the Nth set of CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information. Or determining, by the transmission point corresponding to the CSI-RS configuration information sent by the port indicated by the multiple sets of CSI-RS configuration information, an uplink transmission point of the terminal;

The first preset determining sub-unit is specifically configured to determine, as the uplink transmission point of the terminal, a transmission point corresponding to the Nth set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, where The N sets of CSI-RS configuration information is any one of the multiple sets of CSI-RS configuration information, or the CSI-RS configuration sent by one of the multiple sets of CSI-RS configuration information. The transmission point corresponding to the information is determined as an uplink transmission point of the terminal;

The N is a natural number, and the N sets are less than a plurality of sets.

The terminal according to any one of claims 18 to 20, wherein the determining unit comprises: a third configuration information receiving subunit, wherein the terminal receives multiple sets of CSI-RS configuration information sent by the base station;

The master node or the primary cell determining the subunit, and setting a set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information Corresponding transmission point is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal;

And a third uplink transmission point determining subunit, where the transmission point corresponding to the primary node or the primary cell is determined as an uplink transmission point of the terminal.

The terminal according to claim 25, wherein the primary node or primary cell determining subunit comprises at least one of the following subunits:

a second indication determining subunit, configured to determine, as a primary node of the terminal, a transmission point corresponding to a set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information, or corresponding to the transmission point The cell is determined to be the primary cell of the terminal;

a second preset determining sub-unit, determining, as the primary node of the terminal, a transmission point corresponding to a preset set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, or corresponding to the transmission point The cell is determined to be the primary cell of the terminal.

27. The terminal of claim 26, wherein:

The second indication determining subunit is specifically configured to determine, as the primary node of the terminal, a transmission point corresponding to the Nth set of CSI-RS configuration information indicated in the multiple sets of CSI-RS configuration information, or The cell corresponding to the transmission point is determined as the primary cell of the terminal, and the Nth set of CSI-RS configuration information is any one of the CSI-RS configuration information of the multiple sets of CSI-RS configuration information, or The transmission point corresponding to the CSI-RS configuration information sent on one port indicated in the multiple sets of CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal. ;

The second preset determining subunit is specifically configured to determine, as the primary node of the terminal, a transmission point corresponding to the Nth set of CSI-RS configuration information in the multiple sets of CSI-RS configuration information, or The cell corresponding to the transmission point is determined as the primary cell of the terminal, and the Nth set of CSI-RS configuration information is any one of the CSI-RS configuration information of the multiple sets of CSI-RS configuration information, or The transmission point corresponding to the CSI-RS configuration information sent by the port in the CSI-RS configuration information is determined as the primary node of the terminal, or the cell corresponding to the transmission point is determined as the primary cell of the terminal;

The N is a natural number, and the N sets are less than a plurality of sets.

The terminal according to any one of claims 18 to 20, wherein the determining unit comprises: a fourth configuration information receiving subunit, configured to receive at least one set of downlink CSI-RS configuration information sent by the base station Each set of the downlink CSI-RS configuration information corresponds to one downlink transmission point;

a configuration information measurement subunit, configured to measure each downlink corresponding to each set of downlink CSI-RS configuration information CSI-RS, obtaining the signal quality, or path loss of each downlink transmission point;

The fourth uplink transmission point determining sub-unit selects a downlink transmission point with the best signal quality or a downlink transmission point with the smallest path loss as the uplink transmission point of the terminal.

An uplink communication terminal, where the terminal includes:

a receiving unit, configured to receive a message that is sent by the base station and includes an uplink path loss;

And a communication unit, configured to determine, according to the uplink path loss, a communication resource, and use the communication resource to perform uplink communication with an uplink transmission point of the terminal.

The terminal according to claim 29, wherein the communication unit is specifically configured to perform uplink communication with an uplink transmission point of the terminal by using at least one of the following manners: