WO2013060151A1

WO2013060151A1 - Uplink transmit diversity configuration method and device

Info

Publication number: WO2013060151A1
Application number: PCT/CN2012/077254
Authority: WO
Inventors: 赵杰; 贺美芳
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-10-24
Filing date: 2012-06-20
Publication date: 2013-05-02
Also published as: CN103067139A

Abstract

Disclosed is an uplink transmit diversity configuration method, comprising: a network side determining, according to received capability information, of a terminal, about supporting an uplink transmit diversity and received capability information, of a cell accessed by the terminal, about supporting an uplink transmit diversity, configuration information of an uplink transmit diversity of an base station accessed by the terminal, and notifying the base station through terrestrial interface signaling. Also disclosed is an uplink transmit diversity configuration device for implementing the above method. The technical solution of the present invention not only supports terminals of higher version protocols to ensure that the terminals can implement the transmit diversity, but is also compatible with terminals of lower version protocols to implement the transmit diversity, thereby improving the performance of the communication system.

Description

Uplink transmission diversity configuration method and device

The present invention relates to signaling configuration techniques for uplink transmit diversity, and in particular, to an uplink transmit diversity configuration method and apparatus. Background technique

Multi-antenna technology enables higher system capacity, wider cell coverage, and better quality of service by using multiple antennas at the transmitting and/or receiving end. Multiple antennas at the transmitting end and/or the receiving end can be used to implement either transmit or receive diversity or spatial multiplexing. The transmit diversity technique is an anti-fading technique in the field of wireless communication in which at least two signals containing the same information are transmitted at the transmitting end. These signals carrying the same information are derived from at least two mutually independent signal sources. The transmit diversity technology can be divided into three basic types: space, frequency, and time, depending on the structure and statistical characteristics of the transmitted signal samples and the radio resources it occupies. It can also be a combination of these three types. The so-called spatial diversity refers to the use of the location (spatial) of the transmission, the signal is not related to the statistical characteristics when it reaches the receiving end after the channel, and the anti-fading function is realized. The so-called frequency diversity refers to the function of anti-fading (frequency selective) by using the statistically uncorrelated characteristics of the signals in different frequency bands after fading channels, that is, the difference in statistical characteristics of fading in different frequency bands. In implementation, the information to be transmitted may be separately modulated on a carrier with no frequency correlation for transmission. The so-called time diversity refers to the use of a random fading signal. When the time interval of the sampling points is sufficiently large (greater than the coherence time of the transmission channel), the fading between the samples is statistically uncorrelated, that is, using the statistical characteristics of temporal fading. Differences are made to achieve resistance to time selective fading. The transmit diversity technology is classified into an open loop transmit diversity mode and a closed loop transmit diversity mode according to whether the receiving end needs to feed back the diversity of the transmit end. In the open-loop transmit diversity mode, the receiving end does not feed back any additional information related to the transmission to the transmitting end, and the transmitting end can use the corresponding encoding by itself. Code techniques (such as simple space-time coding) complete the transmit diversity. In the closed-loop transmit diversity mode, the receiver needs to use feedback channel feedback to the transmitter for a parameter related to transmit diversity (such as the precoding vector required for transmit diversity, indicated by precoding indication information), and the sender uses the feedback after receiving. The information completes the send diversity.

High Speed Uplink Packet Access (HSUPA, High Speed) in 3GPP Release 10

Uplink Packet Access) The uplink and open loop transmit diversity of the system user has completed the standard formulation for TR25.863. The relevant content of closed-loop transmit diversity is currently being discussed. In the closed-loop transmit diversity, precoding control indication (PCI, Precoding) is introduced. Control Indication) This technology. FIG. 1 is a schematic diagram of a channel structure of uplink closed-loop transmit diversity. As shown in FIG. 1, the current industry has reached a consensus on the channel structure of uplink closed-loop transmit diversity, that is, adding an uplink channel and a secondary dedicated physical control channel (S-DPCCH, Secondary Dedicated). The Physical Control Channel is used to transmit the pilot frequency value to the network side, and the network side uses the received pilot frequency value and the pilot value in the Dedicated Physical Control Channel (DPCCH) to understand the weakening of the channel path; A new downlink channel is added, similar to a Fractional Dedicated Physical Channel (F-DPCH), that is, a Fractional Precoding Control Indication Channel (F-PCICH), which is used to transmit uplink transmit diversity. The code value is given to the terminal to achieve better protection against path degradation. Currently, the F-DPCH is transmitted every three time slots. When there is a compressed mode transmission, the terminal saves the last received PCI before the transmission interval until a new precoding is received after the compressed mode transmission interval.

In addition, the industry has reached a consensus that in the case of only professional channels, the network side needs to know which cell controls the precoding control indication.

The uplink open-loop transmit diversity is applied to some scenarios where the terminal moves at a lower rate. For a scenario with a higher mobile rate, it is less applicable due to the Doppler effect. Therefore, the industry has reached the following consensus: The terminal reports the open-loop transmission mode. Capability to the network side, introduced by the network side Dedicated signaling configures open loop transmit diversity.

Currently, the terminal version that agrees to support open-loop transmit diversity can be lower than 11.

The uplink open-loop diversity is also controlled by the network side. How to integrate the uplink and open-loop diversity related information and the uplink closed-loop diversity related information to the node B on the network side is still under discussion. Summary of the invention

In view of this, the main purpose of the present invention is to provide an uplink transmit diversity configuration method and apparatus, which can support a terminal of a high version protocol to ensure that a terminal implements transmit diversity, and is also compatible with a low version terminal to implement transmit diversity.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

An uplink transmit diversity configuration method, where the method includes:

The network side determines configuration information of the uplink transmit diversity of the terminal access base station according to the received uplink support diversity capability information of the terminal and the uplink transmit diversity capability information of the terminal access cell, and performs signaling through the ground interface. The base station.

Preferably, the ground interface signaling includes a cell carrying a parameter for a split ring transmit diversity mode and a closed loop transmit diversity mode, and a cell for carrying a closed loop transmit diversity configuration parameter.

Preferably, the closed loop transmit diversity configuration parameter includes a pilot frequency channel related configuration parameter and a segment precoding control indication channel related configuration parameter.

Preferably, the counseling frequency channel related configuration parameter includes at least one of the following information: a spreading factor, a slot format, and a power offset;

The segment precoding control indicates that the channel related configuration parameters include at least one of the following information: a spreading factor and a slot format.

Preferably, when the diversity mode in the configuration information is configured as a closed-loop transmit diversity mode, and the terminal has only a dedicated channel, the closed-loop transmit diversity configuration parameter further includes: informing, by the base station, which cell determines a pre-coding control indication. Parameters. Preferably, the ground interface signaling is Iub interface signaling and/or Iur interface signaling.

Preferably, the terrestrial interface signaling is a radio link setup message, or a radio link add message, or a radio link reconfiguration message.

An uplink transmit diversity configuration apparatus includes a receiving unit, a determining unit, and a notification unit, where:

a receiving unit, configured to receive uplink transmission diversity capability information of the terminal and support uplink transmission diversity capability information of the terminal access cell;

a determining unit, configured to determine configuration information of an uplink transmit diversity of the terminal accessing the base station, and a notification unit, configured to notify, by the ground interface signaling, configuration information of the uplink transmit diversity to the base station.

Preferably, the closed loop transmit diversity configuration parameter includes a counseling frequency channel related configuration parameter and a segment precoding control indication channel related configuration parameter;

The counseling frequency channel related configuration parameter includes at least one of the following information: a spreading factor, a slot format, and a power offset;

Preferably, when the diversity mode in the configuration information is configured as a closed-loop transmit diversity mode, and the terminal has only a dedicated channel, the closed-loop transmit diversity configuration parameter further includes: informing, by the base station, which cell determines a pre-coding control indication. Parameters.

In the present invention, the network side receives configuration information of determining uplink transmit diversity of the terminal access base station according to the received uplink support diversity capability information of the terminal and the uplink transmit diversity capability information of the terminal access cell, and The base station is signaled through a terrestrial interface. Ben The technical solution of the invention not only supports the terminal of the high version protocol to ensure that the terminal implements the transmission diversity, but also is compatible with the lower version terminal to implement the transmission diversity, thereby improving the performance of the communication system. DRAWINGS

1 is a schematic diagram of a channel structure of uplink closed loop transmit diversity;

2 is a flowchart of a method for configuring uplink transmit diversity according to an embodiment of the present invention;

3 is a flowchart of a method for configuring uplink transmit diversity according to Embodiment 2 of the present invention;

4 is a flowchart of a method for configuring uplink transmit diversity according to Embodiment 3 of the present invention;

FIG. 5 is a schematic structural diagram of a structure of an uplink transmit diversity configuration apparatus according to an embodiment of the present invention. detailed description

The basic idea of the present invention is: the network side receives the configuration of determining the uplink transmit diversity of the terminal access base station according to the received terminal support uplink transmit diversity capability information and the supported uplink transmit diversity capability information of the terminal access cell. Information, and the base station is signaled through the ground interface.

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1

2 is a flowchart of a method for configuring an uplink transmit diversity according to an embodiment of the present invention. As shown in FIG. 2, the uplink transmit diversity configuration method in this example specifically includes the following steps:

Step 201: The terminal reports to the network side that the terminal supports uplink open-loop transmit diversity through the uplink air interface signaling.

The uplink air interface signaling may be a radio resource connection establishment request message or the like.

Step 202: Node B and/or Drift Radio Network Controller (DRNC) support uplink open loop transmit diversity through ground interface signaling to the RNC side (SRNC). Here, the terminal access cell supports the uplink transmit diversity capability information, that is, the node 8 and the or the DRNC support the uplink transmit diversity capability information. If the terminal access cell supports the uplink open loop transmit diversity, the node B and/or the DRNC Uplink open loop transmit diversity is also supported. The following examples are all such cases and will not be described again.

Step 203: The Serving Radio Network Controller (SRNC) supports the uplink transmit diversity capability information and the uplink transmit diversity capability information supported by the terminal (the uplink transmit diversity capability supported by the node 8 and the DRNC). The configuration information of the uplink transmit diversity of the terminal accessing the base station is determined, and the configuration information of the uplink transmit diversity is notified to the node B and/or the DRNC through the ground interface signaling, and the node B and/or the DRNC are configured as an uplink open loop transmit diversity mode. .

In this example, the configuration information of the uplink transmit diversity includes only the information indicating that the uplink open loop transmit diversity mode is used. Therefore, the uplink diversity mode is set to be opened in the cell used for the split ring transmit diversity mode and the closed loop transmit diversity mode parameter. Ring diversity mode, ie OLTD. In the present invention, the ground interface signaling may be a radio link setup message, a radio link add message, a radio link reconfiguration message, or the like.

Step 204: The DRNC passes the uplink diversity mode configuration information to the node B on the DRNC side. When the configuration information of the uplink transmit diversity is notified to the DRNC, the DRNC notifies the node B of the configuration information of the uplink transmit diversity.

Embodiment 2

In this example, the terminal is configured with a high speed packet channel. FIG. 3 is a flowchart of a method for configuring an uplink transmit diversity according to Embodiment 2 of the present invention. As shown in FIG. 3, the uplink transmit diversity configuration method in this example specifically includes the following steps:

Step 301: The terminal reports to the network side that the uplink closed-loop transmission is supported by the uplink air interface signaling, and the uplink air interface signaling may be a radio resource connection establishment request message. Step 302: The Node B and/or the DRNC report to the RNC side (SRNC) that the uplink closed-loop transmit diversity is supported by the ground interface signaling.

Step 303: The SRNC determines, according to the uplink transmission diversity capability information supported by the terminal and the uplink transmission diversity capability information supported by the terminal accessing cell (the uplink transmission diversity capability information supported by the Node B and the DRNC), the uplink transmission diversity of the terminal accessing the base station. The configuration information is used to notify the Node B and/or the DRNC of the configuration information of the uplink transmit diversity through the ground interface signaling, and the Node B and/or the DRNC are configured as an uplink closed loop transmit diversity mode.

The ground interface signaling includes a cell carrying a parameter for the split ring transmit diversity mode and the closed loop transmit diversity mode, and a cell for carrying the closed loop transmit diversity configuration parameter. The closed loop transmit diversity configuration parameter includes a pilot channel related configuration parameter and a segment precoding control indicating channel related configuration parameter. The supplementary frequency channel related configuration parameter includes at least one of the following information: a spreading factor, a slot format, and a power offset; the segment precoding control indicating that the channel related configuration parameter includes at least one of the following information: Spreading Factor and slot format.

The cell used in the split-ring transmit diversity mode and the closed-loop transmit diversity mode parameter is filled in the uplink diversity mode as a closed-loop diversity mode, that is, CLTD. In the present invention, the ground interface signaling may be a radio link setup message, a radio link add message, a radio link reconfiguration message, or the like. Closed loop diversity related parameters SF = 256 and so on.

Step 304: The DRNC transmits the uplink diversity mode configuration information to the node B on the DRNC side. When the configuration information of the uplink transmit diversity is notified to the DRNC, the DRNC notifies the node B of the configuration information of the uplink transmit diversity.

Embodiment 3

In this example, the terminal is only configured with a dedicated channel. 4 is a flowchart of a method for configuring an uplink transmit diversity according to Embodiment 3 of the present invention. As shown in FIG. 4, the uplink transmit diversity configuration method in this example includes the following steps:

Step 401: The terminal reports to the network side that the uplink closed-loop transmission is supported by the uplink air interface signaling. The uplink air interface signaling may be a radio resource connection establishment request message or the like. Step 402: The Node B and/or the DRNC report to the RNC side (SRNC) that the uplink closed-loop transmit diversity is supported by the ground interface signaling.

Step 403: The SRNC determines, according to the uplink transmission diversity capability information supported by the terminal and the uplink transmission diversity capability information supported by the terminal access cell (the uplink transmission diversity capability information supported by the Node B and the DRNC), the uplink transmission diversity of the terminal accessing the base station. The configuration information is used to notify the Node B and/or the DRNC of the configuration information of the uplink transmit diversity through the ground interface signaling, and the Node B and/or the DRNC are configured as an uplink closed loop transmit diversity mode. Since the terminal only has a dedicated channel, the closed-loop transmit diversity configuration parameter further includes a parameter for notifying the base station in which cell determines the precoding control indication.

The cell used in the split-ring transmit diversity mode and the closed-loop transmit diversity mode parameter is filled in the uplink diversity mode as a closed-loop diversity mode, that is, CLTD. In the present invention, the ground interface signaling may be a radio link setup message, a radio link add message, a radio link reconfiguration message, or the like. The closed-loop diversity related parameter SF = 256, etc., and the precoding control is configured to indicate the cell.

For example, by setting a precoding control indicating cell cell in a radio link setup message, a radio link addition message, or a radio link reconfiguration message to indicate whether a cell is configured to precode control indicating a cell, for example, if The received radio link setup message, the radio link addition message, or the radio link reconfiguration message does not include the precoding control indication cell. a cell, indicating that the precoding control indicates that the cell is not in the cell of the Node B, and if the received radio link setup message, the radio link add message, or the radio link reconfiguration message includes the precoding control indication cell cell, The precoding control indicates that the cell is configured in the current cell.

Step 404: The DRNC transmits the uplink diversity mode configuration information to the node B on the DRNC side. When the configuration information of the uplink transmit diversity is notified to the DRNC, the DRNC notifies the node B of the configuration information of the uplink transmit diversity.

FIG. 5 is a schematic structural diagram of an apparatus for configuring an uplink transmit diversity according to an embodiment of the present invention. As shown in FIG. 5, the uplink transmit diversity configuration apparatus of the embodiment of the present invention includes a receiving unit 50, a determining unit 51, and a notifying unit 52, where:

The receiving unit 50 is configured to receive, by the terminal, the uplink transmit diversity capability information and the uplink transmit diversity capability information of the terminal accessing the cell;

The determining unit 51 is configured to determine configuration information of the uplink transmit diversity of the terminal accessing the base station, and the notification unit 52 is configured to notify the base station of the configuration information of the uplink transmit diversity by using ground interface signaling.

The above ground interface signaling includes a cell carrying a parameter for the split ring transmit diversity mode and the closed loop transmit diversity mode, and a cell for carrying the closed loop transmit diversity configuration parameter.

The closed loop transmit diversity configuration parameter includes a counseling frequency channel related configuration parameter and a segment precoding control indication channel related configuration parameter;

When the diversity mode in the configuration information is configured as a closed-loop transmit diversity mode and the terminal has only a dedicated channel, the closed-loop transmit diversity configuration parameter further includes notifying the base station The cell determines the parameters of the precoding control indication.

The ground interface signaling is Iub interface signaling and \ or Iur interface signaling.

The terrestrial interface signaling is a radio link setup message, or a radio link add message, or a wireless link reconfiguration message.

It should be understood by those skilled in the art that the functions of the above processing unit in the uplink transmit diversity configuration apparatus shown in FIG. 5 of the present invention can be implemented by corresponding hardware circuits, or by a processor and corresponding execution software. The related functions of the foregoing processing units can be understood by referring to the related descriptions of Embodiment 1 to Embodiment 3 of the foregoing uplink transmit diversity configuration method.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

In the present invention, the network side receives configuration information of determining uplink transmit diversity of the terminal access base station according to the received uplink support diversity capability information of the terminal and the uplink transmit diversity capability information of the terminal access cell, and The base station is signaled through a terrestrial interface. Therefore, not only the terminal supporting the high version protocol guarantees the terminal to implement the transmit diversity, but also the lower version terminal to implement the transmit diversity, thereby improving the performance of the communication system.

Claims

Claim

1. An uplink transmit diversity configuration method, where the method includes:

2. The method according to claim 1, wherein the ground interface signaling includes a cell carrying a parameter for a split ring transmit diversity mode and a closed loop transmit diversity mode, and a bearer closed loop transmit diversity configuration parameter. The cell.

3. The method according to claim 2, wherein the closed loop transmit diversity configuration parameter includes a pilot frequency channel related configuration parameter and a segment precoding control indication channel related configuration parameter.

4. The method according to claim 3, wherein the counseling frequency channel related configuration parameter comprises at least one of the following information:

Spreading factor, slot format and power offset;

The method according to any one of claims 1 to 4, wherein, when the diversity mode in the configuration information is configured as a closed-loop transmit diversity mode and the terminal has only a dedicated channel, the closed-loop transmit diversity configuration parameter The parameter further includes a parameter notifying the base station in which cell determines the precoding control indication.

6. The method according to claim 5, wherein the ground interface signaling is Iub interface signaling and \ or Iur interface signaling.

7. The method according to claim 6, wherein the terrestrial interface signaling is a radio link setup message, or a radio link add message, or a radio link reconfiguration message.

8. An uplink transmit diversity configuration apparatus, the apparatus comprising a receiving unit, a determining unit, and a notifying unit, where: a receiving unit, configured to receive uplink transmission diversity capability information of the terminal and support uplink transmission diversity capability information of the terminal access cell;

9. The apparatus according to claim 7, wherein the ground interface signaling includes a cell carrying a parameter for a split ring transmit diversity mode and a closed loop transmit diversity mode, and a bearer closed loop transmit diversity configuration parameter. The cell.

10. The apparatus according to claim 9, wherein the closed loop transmit diversity configuration parameter includes a pilot frequency channel related configuration parameter and a segment precoding control indication channel related configuration parameter;

The device according to any one of claims 8 to 10, wherein, when the diversity mode in the configuration information is configured as a closed-loop transmit diversity mode and the terminal has only a dedicated channel, the closed-loop transmit diversity configuration parameter The parameter further includes a parameter notifying the base station in which cell determines the precoding control indication.