MX2011011810A

MX2011011810A - Method, radio network controller, base station and communication system for establishing a feedback channel.

Info

Publication number: MX2011011810A
Application number: MX2011011810A
Authority: MX
Inventors: Chenjun; Kun Yan; Zhongyang Han; Xiaoxiao Zheng
Original assignee: Huawei Tech Co Ltd
Priority date: 2009-05-06
Filing date: 2009-05-06
Publication date: 2012-01-30
Also published as: BRPI0924589A2; CN102077625A; WO2010127484A1

Abstract

A method, radio network controller, base station and communication system for establishing a feedback channel are provided. The method for establishing the feedback channel includes: receiving the terminal capability information reported from the user equipment (101); configuring the information feedback channel for the uplink data transmission of the user equipment according to the terminal capability information (102); generating the configuration information of the information feedback channel and sending it to the base station (103); sending the configuration information to the user equipment after receiving the base station channel configuration success information (104). Another radio network control method is also provided. The corresponding radio network controller, base station and communication system are also provided. The above methods and apparatus provided by the invention embodiments can realize establishing PCI feedback channel for the uplink MIMO data transmission of the user equipment.

Description

METHOD TO ESTABLISH A FEEDBACK CHANNEL, RADIO NETWORK CONTROLLER, NODE B AND COMMUNICATION SYSTEM FIELD OF THE INVENTION The embodiments of the present invention relate to the field of communication technologies, and in particular, to a method for establishing a feedback channel, a radio network controller (RNC), a Node B, and a communication system.

BACKGROUND OF THE INVENTION The access of high speed Uplink Packet Access (HSUPA) is the optimization and evolution of packet services in the uplink direction, that is, the address from a mobile terminal to an access network of radio. HSUPA makes improvements in terms of the highest data transfer rate, cell throughput, and delay when using such mechanisms as encoding, hybrid layer physical repetition request, Node B based fast programming, and short frame transmission in transmission time interval (TTI, Transmission Time Interval) of 2 ms.

The first applications of multiple input and multiple output (MIMO) technology use dual antennas to transmit dual data streams in high speed downlink packet access data transmission (HSDPA, High Speed Downlink Packet Access), thereby increasing the performance of downlink data. When dual data streams are transmitted, the primary data stream is transmitted on the two antennas using weights wl and w2 respectively, while the secondary data stream is transmitted on the two antennas using weights w3 and w4 respectively, where wl = w3 = 1 / V (2), and w4 = -w2. Therefore, from the w2 value of the precoding control indicator (PCI, Precoding Control Indicator) of the primary data stream, the precoding weights of the two data streams can be derived; and when a single data stream is transmitted, the precoding weights of the data stream are wl and w2. A user equipment (UE, User Equipment) feeds a value of PCI to Node B through a dedicated high-speed physical control channel (HS-DPCCH, High-Speed Dedicated Physical Control Channel), and according to the value of PCI, Node B determines the precoding weights that will be used for the next transmission moment.

The MIMO transmission mode is introduced into the uplink data transmission, that is, when the UE carries out the uplink data transmission, two data streams are transmitted in a single TTI, in such a way that the Uplink rate of the EU rises significantly.

When the UE uses the uplink MIMO mode, as in the downlink MIMO mode, the Node B needs to feed back the PCI information to the UE. However, in the current art, there is a problem with respect to how to establish a PCI feedback channel for the uplink MIMO data transmission of the UE.

BRIEF DESCRIPTION OF THE INVENTION An objective of the embodiments of the present invention is to provide a method for establishing a feedback channel, an RNC, a Node B, and a communication system, such that a PCI feedback channel can be established for the transmission of uplink MIMO data of a UE.

To achieve the above objective, one embodiment of the present invention provides a method for establishing a feedback channel, wherein the method includes: receive capacity information from the terminal reported by an UE; configuring an information feedback channel for uplink data transmission of the UE according to the capacity information of the terminal; send the configuration information of the information feedback channel to a Node B; Y send the configuration information of the information feedback channel to the UE after receiving the success information of the channel configuration from Node B.

One embodiment of the present invention also provides another method for establishing a feedback channel, where the method includes: receiving configuration information of a feedback channel information for the uplink data transmission of a UE that is sent by an RNC, where the configuration information of the information feedback channel is generated by the RNC according to the information capacity of the terminal; Y carry out the configuration of the channel according to the received configuration information.

One embodiment of the present invention also provides an RNC, which includes: a first receiving module, configured to receive terminal capacity information reported by a UE and success information of the configuration returned by a Node B; a first module of the channel configuration, configured to configure an information feedback channel for the uplink data transmission of the UE according to the capacity information of the terminal; a module for generating configuration information, configured to generate information of the configuration of the information feedback channel according to the capacity information of the terminal; Y a first sending module, configured to send the configuration information of the information feedback channel to the Node B, or after receiving the success information of the channel configuration from the Node B, send the channel configuration information of information feedback to the UE.

One embodiment of the present invention also provides a Node B, which includes: an information reception module, configured to receive configuration information of an information feedback channel for the uplink data transmission of a UE that is sent by an RNC, where the configuration information of the information feedback channel it is generated by the RNC according to the capacity information of the terminal; Y a second module of the channel configuration, configured to carry out the configuration of the channel according to the configuration information received by the information reception module.

One embodiment of the present invention also provides a communication system, which includes an RNC and a Node B, where: the RNC is configured to: receive the capacity information of the terminal reported by a UE and the success information of the channel configuration returned by the Node B, configure an information feedback channel for the uplink data transmission of the UE according to the capacity information of the terminal, generate information of the configuration of the feedback channel information according to the capacity information of the terminal, and send the configuration information of the information feedback channel to the Node B, or after receiving the success information of the channel configuration from Node B, sending the configuration information to the UE; Y the Node B is configured to: receive the configuration information from the information feedback channel for the uplink data transmission of the UE that is sent by the RNC, where the configuration information of the information feedback channel is generated by the RNC according to the capacity information of the terminal; and carry out the configuration of the channel according to the received configuration information.

The embodiments of the present invention provide a method for establishing a feedback channel, an RNC, a Node B, and a communication system. The RNC configures an information feedback channel according to the information received from the terminal capacity reported by a ÜE, and generates and sends information of the configuration of the feedback channel to Node B, and Node B configures the feedback channel according to the configuration information. With the technical solutions of the embodiments of the present invention, a PCI feedback channel can be established for uplink MIMO data transmission of a UE.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic flow chart of a method for establishing a feedback channel according to a first embodiment of the present invention.

Figure 2 is a schematic flow diagram of a method for establishing a feedback channel according to a second embodiment of the present invention.

Figure 3 is a schematic flow chart of a method for establishing a feedback channel according to a third embodiment of the present invention.

Figure 4 is a schematic flow diagram of a method for establishing a feedback channel according to a fourth embodiment of the present invention.

Figure 5 is a schematic flow chart of a method for establishing a feedback channel according to a fifth embodiment of the present invention.

Figure 6 is a schematic flow diagram of a method for establishing a feedback channel according to a sixth embodiment of the present invention.

Figure 7 is a schematic flow chart of a method for establishing a feedback channel according to a seventh embodiment of the present invention.

Figure 8 is a schematic structural diagram of an RNC according to an embodiment of the present invention.

Figure 9 is a schematic structural diagram of a Node B according to an embodiment of the present invention.

Figure 10 is a schematic structural diagram of a communication system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The technical solutions of the present invention are described hereinafter in detail with reference to the accompanying drawings and embodiments.

When a UE uses a MIMO mode to perform the uplink data transmission, as in the MIMO mode in HSDPA, a Node B needs to feed back the PCI information to the UE. Therefore, the network needs to configure an information feedback channel between Node B and UE to allow the UE to successfully obtain PCI information. Figure 1 is a schematic flow chart of a method for establishing a feedback channel according to a first embodiment of the present invention. As shown in Figure 1, the method includes the following steps.

Step 101: Receive the capacity information of the terminal reported by an UE. In this case, the UE reports the capacity information of the terminal which may be if the MIMO technology is supported or if a PCI feedback channel is supported or both, and an RNC receives the above information.

Step 102: Configure an information feedback channel for the uplink data transmission of the UE according to the capacity information of the terminal. In this step, the RNC configures a PCI feedback channel, such as a PCI feedback channel, for the UE after receiving the terminal capacity information reported by the UE and determining that the UE supports the MIMO technology of the UE. uplink. Specifically, the configuration in this step may include configuring only the orthogonal sequence of signatures, that is, when the configuration of the channelization code of the PCI feedback channel is consistent with that of a recognition indicator channel E-DCH HARQ (of request Hybrid Automatic Repeat ReQuest (Enhanced Uplink Dedicated Channel) dedicated channel or E-DCH relative grant channel (HARQ E-DCH recognition channel or channel) Concerning the relative granting of E-DCH, E-HICH / RGCH (E-DCH HARQ Acknowledgment Indicator Channel / Relative Grant Channel)), it is allowed to configure only the orthogonal sequence of signatures.

Step 103: Generate and send configuration information from the information feedback channel to a Node B. In this step, the RNC generates the information of the configuration of the feedback channel after configuring the PCI feedback channel for the UE and sends the configuration information to the Node B, in such a way that the Node B establishes the information feedback channel of the according to the configuration information. The configuration information can be an orthogonal sequence of signatures or an orthogonal sequence of signatures and a channelization code.

Step 104: Send the configuration information to the UE after receiving the channel configuration success information from Node B.

With the method for establishing a feedback channel information according to the modality of the present invention, the capacity information of the terminal reported by a UE is rece, an information feedback channel is configured for the uplink data transmission of the UE according to the information, and configuration information of the configured feedback channel is sent to Node B, such that Node B configures the channel according to the configuration information, and after Node B configures successfully the channel, the configuration information is sent to the UE. Therefore, an information feedback channel is established on a link from the UE to the Node B, and the use of uplink MIMO technology by the UE is supported.

The above modality deals with a process to establish an information feedback channel by the RNC. In Node B, the method can include the steps shown in Figure 2.

Step 201: Receconfiguration information from a feedback channel information sent by the RNC.

Step 202: Carry out the configuration of the channel according to the rece configuration information.

In this mode, after completing the configuration of the channel, the RNC sends the configuration information of the feedback channel set to Node B, and the Node B carries out the configuration of the channel according to the configuration information, such that Node B and RNC establish a consistent information feedback channel. The channel configuration information may include an orthogonal sequence of signatures, an orthogonal sequence of signatures and a channelization code, for example, if the channelization code in the channel configuration information is "1", the Node B may also establish a corresponding information feedback channel according to the channelization code corresponding to "1", and the channelization code can be configured as any of 0 to 127.

The modality method can be implemented in a radio resource control (RRC) connection process, or the configuration of the PCI feedback channel can be completed in a reconfiguration process or an ASU process ( ActSet Update,), which are described in the following respecty.

Figure 3 is a schematic flow chart of a method for establishing a feedback channel according to a third embodiment of the present invention. As shown in Figure 3, this mode implements the method to establish a feedback channel information in an RRC connection process. The method includes the following steps.

Step 301: A UE sends an RRC connection configuration request message to an RNC which carries the capability information of the terminal indicating whether the UE supports uplink MIMO and / or a PCI feedback channel, such as if it supported an enhanced precoding control indication channel (E-PCICH, Enhanced Precoding Control Indication Channel).

Step 302: The RNC configures a PCI feedback channel for the UE according to the capacity information of the terminal.

Step 303: The RNC sends a radio link configuration request message including information of the PCI feedback channel configuration, where the radio link configuration request message is sent to the Node B via an interface message Iub.

Step 304: Node B establishes the PCI feedback channel after receiving the radio link configuration request message.

Step 305: Node B feeds its configuration situation to the RNC. If the configuration is successful, the Node B notifies the RNC by means of a radio link configuration response message that the PCI feedback channel was successfully established.; and if the configuration fails, the Node B sends a radio link configuration failure message that includes at least one reason for the failure of the PCI feedback channel configuration, such as insufficient E-PCICH resources. The radio link configuration response message is sent through an Iub interface.

Step 306: The RNC proceeds according to the information returned by the Node B, and when the Node B returns the information indicating that the PCI feedback channel was successfully established, the RNC sends a connection configuration message of RRC that takes the configuration information from the PCI feedback channel to the UE.

Step 307: The UE returns a complete RRC connection configuration message to the RNC to complete the establishment of the RRC connection.

The channel configuration information of this mode may be an orthogonal sequence of signatures or an orthogonal sequence of signatures and a channelization code. Specifically, when the channeling code of the PCI feedback channel is consistent with that of an E-HICH / E-RGCH (E-RGCH, E-DCH Relative Grant Channel, E-DCH Relative Grant Channel, E-HICH, E -DCH HARQ Acknowledgment Indicator Channel, E-DCH HARQ Acknowledgment Indicator Channel), the configuration information of the PCI feedback channel is only an orthogonal sequence of signatures.

In a reconfiguration process or an active set update process, you can also implement the method to establish an information feedback channel. This can be divided into synchronous reconfiguration and asynchronous reconfiguration between the Node B and the RNC quo between a Serving Radio Network Controller (SRNC) and a drift radio network controller (DRNC, Drift Radio). Network Controller). In addition, the synchronous configuration or asynchronous configuration can also be divided into two cases: there is an Iur interface or there is no Iur interface. Figure 4 is a schematic flow diagram of a method for establishing a feedback channel according to a fourth embodiment of the present invention. This mode deals with synchronous reconfiguration in the absence of an Iur interface. As shown in Figure 4, the method includes the following steps.

Step 401: A UE sends an RRC connection complete configuration message to an RNC which carries the capability information of the terminal indicating whether the UE supports uplink MIMO and / or a PCI feedback channel, where the PCI feedback channel can be an E-PCICH.

Step 402: The RNC configures a feedback channel of PCI for the UE according to the capacity information of the terminal.

Step 403: The RNC sends a radio link reconfiguration preparation message (Iub message) including configuration information of the PCI feedback channel to the Node B.

Step 404: Node B configures the feedback channel after receiving the radio link reconfiguration preparation message.

Step 405: Node B feeds its configuration situation to the RNC. If the configuration is successful, the Node B notifies the RNC by a reconfiguration radio link list message that the PCI feedback channel was successfully established; and if the configuration fails, the Node B sends a radio link configuration failure message (Iub message) that includes at least one reason for the failure of the PCI feedback channel configuration, such as insufficient channel resources. PCI feedback.

Step 406: The RNC returns a reply message to the Node B. When it receives a configuration success message from the Node B, the RNC returns a radio link reconfiguration commitment message to the Node B; and when it receives a configuration failure message from Node B, the RNC returns a radio link reconfiguration cancellation message to Node B.

Step 407: After receiving the configuration success message returned by the Node B, the RNC sends the UE a reconfiguration message (such as a radio bearer reconfiguration message (RB, Radio Bearer)) or an active message. set update (such as a set update message) which carries the configuration information of the PCI feedback channel to enable the UE to set the information feedback channel according to the configuration information.

Step 408: The UE returns a reconfiguration response message or an active set update response message to the RNC to complete the reconfiguration process or the active set update process.

The previous mode deals with a process to establish a PCI feedback channel in the absence of a Iur interface. The specific process in the presence of an Iur interface is described in the following modality. Figure 5 is a schematic flow chart of a method for establishing a feedback channel according to a fifth embodiment of the present invention. As shown in Figure 5, the method includes the following steps.

Step 501: A UE sends a complete connection setup message to an SRNC carrying terminal capability information indicating whether the UE supports uplink MIMO and / or a PCI feedback channel, where the feedback channel PCI can be an E-PCICH.

Step 502: The SRNC configures a PCI feedback channel for the UE according to the capacity information of the terminal, and sends to the Node B a radio link reconfiguration preparation message (Iub message) which includes information of the configuration of the PCI feedback channel. Specifically, the radio link reconfiguration preparation message is first sent by the SRNC to a DRNC, and the DRNC stores the configuration information of the PCI feedback channel and subsequently forwards the radio link reconfiguration preparation message to the Node B.

Step 503: After receiving the radio link reconfiguration preparation message, Node B configures the feedback channel and feeds its configuration status to the RNC. If the configuration is successful, Node B notifies the DRNC via a link list configuration message that the PCI feedback channel was successfully established; and if the configuration fails, the Node B sends a radio link configuration failure message (Iub message) that includes at least one reason for the failure of the feedback channel configuration, such as insufficient resources of the feedback channel. PCI Step 504: When a configuration success message is received from Node B, the DRNC returns a radio link reconfiguration commitment message to Node B; and when a configuration failure message is received from Node B, the DRNC returns a radio link reconfiguration cancellation message to Node B.

Step 505: After receiving the radio link list reconfiguration message (Iur message) from Node B, the DRNC configures the feedback channel according to the configuration information of the PCI feedback channel carried in the message of radio link reconfiguration preparation received in step 502.

Step 506: The DRNC feeds the configuration situation to the SRNC. If the DRNC configuration is successful, the DRNC notifies the SRNC by means of a radio link list reconfiguration message that the information feedback channel is configured successfully; and if the DRNC configuration fails, the DRNC sends the SRNC a radio link reconfiguration failure message (Iur message) which bears an indication of the reason for the failure of the PCI feedback channel configuration, for example, the resources of the PCI feedback channel are insufficient or the PCI feedback channel is not supported.

Based on the implementation of the previous steps, we will. establish the lub and Iur transmission carriers.

Step 507: According to the indication information of Node B and of the DRNC which indicate that the PCI feedback channel was successfully established, the SRNC sends the UE a reconfiguration message (or a reconfiguration message RB) or a message of active set update (or a set update message) that carries the configuration information of the PCI feedback channel to enable the UE to set the information feedback channel according to the configuration information.

Step 508: The UE returns a reconfiguration response message or an active set update response message to the RNC to complete the reconfiguration process or the active set update process.

The channel configuration information in this mode can be an orthogonal sequence of signatures or an orthogonal sequence of signatures and a channelization code. When the configuration of the channelization code of the PCI feedback channel is consistent with that of an E-HICH / E-RGCH, the configuration information of the PCI feedback channel is an orthogonal sequence of signatures.

The next mode corresponds to an asynchronous reconfiguration between a Node B and an RNC or between an SRNC and a DRNC. Similarly, it is divided into two cases: there is an Iur interface or there is no Iur interface. In the absence of an Iur interface, refer to the modality shown in Figure 6 for the process of establishing a feedback channel. Figure 6 is a schematic flow diagram of a method for establishing a feedback channel according to a sixth embodiment of the present invention. The method includes the following steps.

Step 601: A UE sends to an RNC a complete RRC connection configuration message which carries terminal capability information indicating whether the UE supports uplink MIMO and / or a PCI feedback channel (such as a E-PCICH).

Step 602: The RNC configures a PCI feedback channel for the UE according to the capacity information of the terminal.

Step 603: The RNC sends a radio link reconfiguration request message (Iub message) to the Node B that includes information on the configuration of the PCI feedback channel.

Step 604: Node B configures the feedback channel after receiving the radio link reconfiguration request message.

Step 605: Node B feeds the location of the channel configuration to the RNC. If the configuration is successful, the Node B notifies the RNC by means of a link reconfiguration response message that the PCI feedback channel is successfully configured; and if the configuration fails, the Node B sends a radio link configuration failure message (Iub message) that includes at least one reason for the failure of the feedback channel configuration, such as insufficient resources of the feedback channel. PCI Step 606: After receiving a configuration success message returned by the Node B, the RNC sends the UE a reconfiguration message (such as a reconfiguration message RB) or an active set update message (such as a message set update ) which carries the configuration information of the PCI feedback channel to enable the UE to set the information feedback channel according to the configuration information.

Step 607: The UE returns a reconfiguration response message or an active set update response message to the RNC to complete the reconfiguration process or the active set update process.

Figure 7 is a schematic flow chart of a method for establishing a feedback channel according to a seventh embodiment of the present invention. As shown in Figure 7, the method includes the following steps.

Step 701: A UE sends a complete RRC connection configuration message to an SRNC which carries terminal capability information indicating whether the UE supports uplink MIMO and / or a PCI feedback channel (such as a E-PCICH).

Step 702: The SRNC configures a PCI feedback channel for the UE according to the capacity information of the terminal, and sends to the Node B a radio link reconfiguration request message (Iub message) that includes information of the configuration of the PCI feedback channel. Specifically, the radio link reconfiguration request message is first sent by the SRNC to a DRNC, and the DRNC stores the configuration information of the PCI feedback channel and subsequently forwards the radio link reconfiguration request message. to Node B.

Step 703: After receiving the radio link reconfiguration request message, Node B configures the feedback channel. If the configuration is successful, Node B notifies the DRNC by means of a link reconfiguration response message that the PCI feedback channel was successfully established; and if the configuration fails, the Node B sends a radio link configuration failure message (Iub message) that includes at least one reason for the failure of the feedback channel configuration, such as insufficient resources of the feedback channel. PCI Step 704: After receiving a radio link reconfiguration response message (Iur message) from Node B, the DRNC configures the information feedback channel according to the configuration information of the PCI feedback channel which is carried in the radio link reconfiguration request message received in step 702.

Step 705: The DRNC feeds the configuration situation to the SRNC. If the DRNC configuration is successful, the DRNC notifies the SRNC by means of a radio link reconfiguration response message that the information feedback channel has been successfully configured; and if the DRNC configuration fails, the DRNC sends the SRNC a radio link reconfiguration failure message (Iur message) which bears an indication of the reason for the failure of the PCI feedback channel configuration, for example, the resources of the PCI feedback channel are insufficient or the PCI feedback channel is not supported.

Based on the implementation of the previous steps, the lub and Iur transmission carriers of the system are established.

Step 706: According to the indication information of the Node B and the DRNC which indicate that the PCI feedback channel was successfully established, the SRNC sends a reconfiguration message (or a reconfiguration message RB) or a message to the UE of active set update (or a set update message) that carries the configuration information of the PCI feedback channel to enable the UE to set the information feedback channel according to configuration information.

Step 707: The UE returns a reconfiguration response message or an active set update response message to the RNC to complete the reconfiguration process or the active set update process.

The channel configuration information in this mode can be an orthogonal sequence of signatures or an orthogonal sequence of signatures and a channelization code. When the configuration of the channelization code of the PCI feedback channel is consistent with that of an E-HICH / E-RGCH, the configuration information of the PCI feedback channel is only an orthogonal sequence of signatures.

In the embodiment of the present invention, the Node B sends its capacity information to the RNC, that is, it sends information to the RNC indicating whether it supports uplink MIMO technology or the PCI feedback channel (E-PCICH) or both of them. Specifically, the Node B can report the capacity information to the RNC by means of a resource status indication message or an audit response message, such that the RNC knows whether the Node B supports the uplink MIMO technology or the PCI feedback channel.

Figure 8 is a schematic structural diagram of an RNC according to an embodiment of the present invention. As shown in Figure 8, the RNC includes: a first receiving module 11, a first configuration module of the channel 12, a configuration information generating module 13, and a first sending module 14. The first module of reception 11 is configured to receive terminal capacity information reported by a UE and configuration success information of the channel returned by a Node B. The first configuration module of channel 12 is configured to configure an information feedback channel for the uplink data transmission of the UE according to the capacity information of the terminal. The configuration information generation module 13 is configured to generate information from the configuration of the information feedback channel according to the capacity information of the terminal. In this modality, the information feedback channel configured by the first module of the channel 12 configuration corresponds to the configuration information generated by the configuration information generation module 13, and the configuration information can also be obtained directly by reading the parameters of the information feedback channel. The first sending module 14 is configured to send configuration information of the feedback channel to the Node B, or after receiving the success information of the channel configuration from the Node B, to send the configuration information of the feedback channel of information to the EU.

The RNC provided by the embodiment of the present invention can receive the terminal capacity information reported by the UE, configure the information feedback channel for the uplink data transmission of the UE according to the capacity information of the UE. terminal, and send the configuration information of the information feedback channel to Node B to enable Node B to configure the feedback channel according to configuration information.

In this mode, the capacity information of the terminal can indicate whether the UE supports the uplink MIMO technology or the PCI feedback channel. After configuring the PCI feedback channel, the RNC can send the relevant configuration parameters, such as an orthogonal sequence of signatures and a channelization code or an orthogonal sequence of signatures of the feedback channel to the Node B.

Figure 9 is a schematic structural diagram of a Node B according to an embodiment of the present invention. As shown in Figure 9, the Node B includes: an information reception module 21 and a second channel configuration module 22. The information reception module 21 is configured to receive configuration information from a feedback channel of information for the uplink data transmission of a UE that is sent by an RNC, where the configuration information of the information feedback channel is generated by the RNC according to the capacity information of the terminal. The second channel configuration module 22 is configured to carry out channel configuration according to the configuration information received by the information reception module.

The Node B provided by this mode configures a channel according to the configuration information received from the RNC, where the configuration information may be an orthogonal sequence of signatures and a channelization code or may include only an orthogonal sequence of signatures, such as so that Node B and RNC can establish a consistent configuration channel. The Node B may also include an information sending module as it is configured to generate and send a message indicating whether the second channel configuration module successfully configures the channel in order to send a message to the RNC indicating whether the Node B configures the channel successfully.

Figure 10 is a schematic structural diagram of a communication system according to an embodiment of the present invention. As shown in Figure 10, the communication system includes an RNC 31 and a Node B 32. The RNC 31 is configured to receive terminal capacity information reported by a UE and configuration success information of the channel returned by the UE. Node B, configure an information feedback channel for the uplink data transmission of the UE according to the capacity information of the terminal, generate configuration information of the information feedback channel according to the capacity information of the terminal, and send the configuration information of the information feedback channel to the Node B, or after receiving the success information of the channel configuration from the Node B, send the configuration information to the UE. The Node B 32 is configured to receive the configuration information of the information feedback channel for uplink data transmission of the UE that is sent by the RNC, where the information information channel configuration information is generated by the RNC according to the capacity information of the terminal; and carry out the configuration of the channel according to the received configuration information.

In the communication system provided by the embodiment of the present invention, the RNC configures an information feedback channel according to the information received from the terminal capacity, and sends the configuration information of the feedback channel to the Node B, where the configuration information can be an orthogonal sequence of signatures and a channelization code, or may include only an orthogonal sequence of signatures, the Node B configures the feedback channel according to the configuration information and meanwhile, the RNC also sends the configuration information to the UE.

The embodiments of the present invention provide a method for establishing a feedback channel, an RNC, a Node B, and a communication system. The RNC configures an information feedback channel according to the information received from the terminal capacity reported by a UE, and generates and sends configuration information from the feedback channel to Node B, and the Node B configures the feedback channel from according to configuration information. With the technical solutions of the embodiments of the present invention, a PCI feedback channel can be established for uplink MIMO data transmission of the UE.

Those skilled in the art will be able to understand that all there was a part of the steps in the communication methods of the embodiments of the present invention can be implemented by suitable hardware instructed by a program. The program can be stored in a readable storage medium and when it is executed, you can carry out the corresponding steps in the communication methods. The storage medium can be a read-only memory (ROM) or a random access memory (RAM), a magnetic disk, a compact disk of read-only memory (CD-ROM, Compact Disk-Read Only Memory), etc.

Finally, it should be taken into account that the above embodiments are used only to describe the technical solutions of the present invention instead of limiting the present invention. Although the present invention is described in detail with reference to the exemplary embodiments thereof, those skilled in the art should understand that equivalent modifications or substitutions may also be made for the technical solutions of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims

NOVELTY OF THE INVENTION Having described the present invention as above, it is considered as a novelty and, therefore, the content of the following is claimed as property: CLAIMS

1. A method to establish a feedback channel, comprising: receive capacity information from the terminal reported by a user equipment (UE); configuring an information feedback channel for uplink data transmission of the UE according to the capacity information of the terminal; send configuration information of the information feedback channel to a Node B; Y send configuration information of the information feedback channel to the UE after receiving the channel configuration success information from Node B.

2. The method for establishing a feedback channel according to claim 1, characterized in that the information received from the terminal capacity comprises information indicating whether the UE supports a multiple input and multiple output (MIMO) technology uplink and / or a precoding control indicator (CPI) feedback channel.

3. The method for establishing a feedback channel according to claim 1, characterized in that the configuration information of the information feedback channel comprises an orthogonal sequence of signatures and a channelization code, or an orthogonal sequence of signatures.

4. The method for establishing a feedback channel according to claim 1, 2, or 3, characterized in that: the reception of the capacity information of the terminal reported by the UE includes: receiving the terminal capacity information reported by the UE by means of a radio resource control (RRC) connection configuration request message; the sending of the configuration information of the information feedback channel to Node B comprises: sending the configuration information of the information feedback channel to the Node B by means of a radio link configuration request message; Y the sending of the configuration information of the information feedback channel to the UE after receiving the success information of the channel configuration from the Node B comprises: when a reply message is received from the radio link configuration returned by the Node B, send a RRC connection configuration message comprising the configuration information of the information feedback channel to the UE.

5. The method for establishing a feedback channel according to claim 1, 2, or 3, characterized in that: the reception of the capacity information of the terminal reported by the UE includes: receive the capacity information from the terminal reported by the UE through a complete RRC connection configuration message; the sending of the configuration information of the information feedback channel to Node B comprises: sending configuration information of the information feedback channel to Node B by means of a preparation message of the radio link reconfiguration; and sending configuration information of the information feedback channel to the UE after receiving the success information of the channel configuration from Node B comprises: when a radio link list reconfiguration message is received, sending a reconfiguration message or an ASU message comprising the configuration information of the information feedback channel to the UE.

6. The method for establishing a feedback channel according to claim 5, further comprises: when the radio link list reconfiguration message returned by the Node B is received, send a radio link reconfiguration commitment message to the Node B; or when a radio link reconfiguration failure message is received which is returned by the Node B and comprises a reason for the configuration failure of the information feedback channel, sending a radio link reconfiguration cancellation message to the Node B .

7. The method for establishing a feedback channel according to claim 5, characterized in that the sending of the configuration information of the information feedback channel to the Node B by means of the radio link reconfiguration preparation message comprises: forwarding, via a serving radio network controller (SRNC), the radio link reconfiguration preparation message to Node B through a drift radio network controller (DRNC); and further comprising: receiving the reconfiguration message radio link list returned by the DRNC.

8. The method for establishing a feedback channel according to claim 1, 2, or 3, characterized in that: the reception of the capacity information of the terminal reported by the UE includes: receive the capacity information from the terminal reported by the UE through a complete RRC connection configuration message; the sending of the configuration information of the information feedback channel to Node B comprises: sending the configuration information of the feedback channel information to the Node B by means of a radio link reconfiguration request message; Y sending the configuration information of the information feedback channel to the UE after receiving the success information of the channel configuration from the Node B comprises: when a radio link reconfiguration response message is received, sending a reconfiguration message or an ASU message comprising the configuration information of the information feedback channel to the UE.

9. The method for establishing a feedback channel according to claim 8, further comprises: receiving the radio link reconfiguration response message, or a radio link reconfiguration failure message comprising a reason for the configuration failure of the information feedback channel, which is returned by the Node B.

10. The method for establishing a feedback channel according to claim 8, characterized in that the sending of the configuration information of the feedback channel to the node B using the radio link reconfiguration request message comprises: sending, via the SRNC, a radio link reconfiguration request message comprising the information of the feedback channel configuration information to the Node B through the DRNC; and further comprising: receiving the radio link reconfiguration response message returned by the DRNC.

11. A method to establish a feedback channel, comprising: receiving configuration information of a feedback channel information for the uplink data transmission of a user equipment (UE) that is sent by a radio network controller (RNC), wherein the configuration information of the feedback channel of information is generated by the RNC according to the capacity information of the terminal; Y carry out the configuration of the channel according to the received configuration information.

12. The method for establishing a feedback channel according to claim 11, characterized in that the received configuration information comprises an orthogonal sequence of signatures and a channelization code, or an orthogonal sequence of signatures.

13. The method for establishing a feedback channel according to claim 11 or 12, further comprises: return to the RNC a message indicating whether the information feedback channel was configured successfully.

14. A radio network controller (RNC), comprising: a first receiving module, configured to receive terminal capacity information reported by a user equipment (UE) and success information of the configuration of the channel returned by a Node B; a first channel configuration module, configured to configure a feedback channel information for uplink data transmission of the UE according to the capacity information of the terminal; a module for generating configuration information, configured to generate configuration information of the feedback channel information according to the capacity information of the terminal; Y a first sending module, configured to send the configuration information of the feedback channel information to the Node B, or after receiving the success information of the channel configuration from the Node B, send the configuration information of the feedback channel information to the EU.

15. A Node B, comprising: an information reception module, adopted to receive configuration information of a feedback channel information for the uplink data transmission of a user equipment (UE) that is sent by a radio network controller (RNC), in wherein the configuration information of the feedback channel information is generated by the RNC according to the capacity information of the terminal; Y a second channel configuration module, adapted to carry out the configuration of the channel according to the configuration information received by the information reception module.

16. The Node B according to claim 15, further comprises: an information sending module adapted to generate a message indicating whether the second channel configuration module successfully configures the channel.

17. A communication system, comprising a radio network controller (RNC) and a Node B, characterized in that: the RNC is adapted to: receive capacity information of the terminal reported by a user equipment (UE) and success information of the configuration of the channel returned by the Node B, configure an information feedback channel for the transmission of data of Uplink of the UE according to the capacity information of the terminal, generate information of the feedback channel configuration information according to the capacity information of the terminal, and send the configuration information of the feedback channel information to the Node B, or after receiving the success information of the channel configuration from Node B, send the configuration information to the UE; Y the Node B is adapted to: receive the configuration information of the feedback channel information for the uplink data transmission of the UE that is sent by the RNC, where the configuration information of the feedback channel information is generated by the RNC according to the capacity information of the terminal; and carry out the configuration of the channel according to the received configuration information.