WO2012139387A1

WO2012139387A1 - Method and apparatus for transmitting channel quality indicator

Info

Publication number: WO2012139387A1
Application number: PCT/CN2011/082938
Authority: WO
Inventors: 柯雅珠; 程翔
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-04-11
Filing date: 2011-11-25
Publication date: 2012-10-18
Also published as: CN102739373B; CN102739373A

Abstract

The present invention discloses a method for transmitting a Channel Quality Indicator (CQI). The method comprises: after receiving data packets on a High Speed Downlink Shared Channel (HS-DSCH) in downlink, a terminal triggers a feedback of an uplink High Speed Dedicated Physical Control Channel (HS-DPCCH), wherein, the feedback is that the terminal, on the Enhanced Dedicated Transport Channel (E-DCH) resources, sends the physical channels carrying CQI information and an E-DCH Radio Network Temporary Identifier (E-RNTI); a node B establishes correspondence between the E-DCH resources and the terminal, and obtains the CQI of transmitting data to the terminal in the downlink direction based on the correspondence. The present invention also discloses an apparatus for transmitting CQI. The above method and apparatus can trigger the feedback of the uplink HS-DPCCH after the data on an HS-DSCH is received in downlink, and shorten the transmission delay of the HS-DPCCH.

Description

Method and device for transmitting channel quality indication

The present invention relates to a transmission technique for channel quality indication in a wireless communication system, and more particularly to a method and apparatus for transmitting a channel quality indication. Background technique

The Channel Quality Indicator (CQI) is a measure of the communication quality of the wireless channel. CQI represents a measure of the channel measurement metric for a given channel. Usually, a high value CQI indicates that one channel has a higher quality, and conversely indicates a poor channel quality. The CQI of a channel is calculated by using performance parameters including: signal to noise ratio, ie signal to interference plus noise ratio, or signal to noise distortion ratio. These values, in combination with other measurements that can measure a given channel measurement, can be used to calculate the CQI of the channel. The CQI of a given channel can provide a basis for the communication system to choose a transmission or modulation scheme.

In the communication system, High Speed Downlink Packet Access (HSDPA) technology can improve system capacity, and can significantly improve downlink user data rate, enabling packet data services within a 5 MHz bandwidth. Provides a downlink data transmission rate of more than 10 megabits per second. This performance improvement is due to some of the key technologies used, including: adaptive modulation coding, fast scheduling, advanced receiver design, and more. The high-speed downlink packet access technology introduces a new transport channel, High Speed Downlink Shared Channel (HS-DSCH), which is used to carry the load of HSDPA, that is, the service data sent to the downlink direction of the terminal. . At the same time, in order to ensure that the terminal can decode the data on the HS-DSCH, HSDPA technology also introduces a new physical channel, High Speed Shared Control Channel (HS-SCCH), to carry the HS-DSCH solution. Adjust the information you need. Information on the HS-SCCH is terminal specific The identifier, that is, the HS-DSCH Radio Network Temporary Identifier (H-RNTI) is masked, so that the terminal can determine whether the information on the received HS-SCCH is sent to itself.

The high-speed uplink packet access technology improves the performance of uplink packet data by means of fast scheduling and physical layer fast retransmission combining. The high-speed uplink packet access technology introduces a new type of transport channel, Enhanced Dedicated Transport Channel (E-DCH), which is used to carry user data and is in a single uplink direction. The physical channel carries the enhanced dedicated transport channel is a physical random access channel (Physical Random Access Channel, PRACH) 0 Moreover, the uplink direction are likely to use physical channels are: dedicated physical control channel (Dedicated Physical Control Channel, DPCCH) For carrying physical layer power control information; High Speed Dedicated Physical Control Channel (HS-DPCCH), used to carry CQI quality feedback information required for downlink direction modulation; E-DCH dedicated physical data E-DCH Dedicated Physical Data Channel (E-DPDCH) for carrying user data in the uplink direction; E-DCH Dedicated Physical Control Channel (E-DPCCH) for The uplink direction carries rate information, retransmission information, and the like related to the E-DPDCH.

In a communication system, the two basic modes of operation of the terminal are the idle mode and the connected mode. The connection mode can be further divided into different states: Universal mobile telecommunication system Radio access network Register area Paging Channel (URA-PCH state), Cell paging channel state (CELL) Paging Channel, CELL PCH state;), cell forward access channel state (CELL Forward Access Channel, CELL-FACH state), cell-dedicated channel state (CELL Dedicated Channel, CELL-DCH state), these states define the terminal can be used The physical channel and the type of transport channel.

In the CELL-FACH state, the uplink can adopt high-speed uplink packet access technology. The uplink user data is sent through the E-DCH; the downlink can use the high-speed downlink packet access technology to receive the downlink user data through the HS-DSCH. In this state, the radio network controller assigns the terminal a unique terminal identity that receives the HS-DSCH: H-RNTI identity. The radio network controller allocates a unique terminal identifier for transmitting the E-DCH to the terminal: E-DCH Radio Network Temporary Identifier (E-RNTI). The radio network controller will assign the H-RNTI identity and the E-RNTI identity information to the terminal to inform the Node B (NodeB) and the terminal.

In a business like "always on" type, such as: PUSH Email, or virtual connection, it is necessary to frequently transmit or receive packet data between the terminal and the server. When the network is deployed, the resident CELL can be used. – FACH state is implemented to avoid frequent state transitions to CELL-DCH. In addition, since smartphones are widely used in wireless communication systems, it is necessary to improve the efficiency of the uplink of existing communication networks as much as possible, especially the efficiency of E-DCH.

Since HS-DPCCH is necessary for efficient downlink data transmission on a high speed channel. In the absence of CQI information, the high speed channel can only be blind modulated, which will result in a significant drop in HSDPA throughput peaks, making the use of high speed resources inefficient and wasteful.

In the prior art, when the terminal transmits data through the E-DCH in the uplink direction, the HS-DPCCH may have an opportunity to be transmitted. In most scenarios, when the HS-DPCCH is able to transmit by chance, the downlink may be sent without data, so the information provided by the HS-DPCCH is rarely useful or useless at all. At the same time, the terminal can start transmitting data on the E-DCH after the protection period of the uplink direction needs to wait for the conflict resolution, so that the first PRACH preamble is sent from the terminal to the NodeB to detect the E-RNTI of the terminal, and then to the HS. -DPCCH transmission, there is a long delay between the two, so that the information provided by the HS-DPCCH and the original intention of providing high-speed channel timely feedback to determine the downlink scheduling are quite different. Summary of the invention

In view of this, the main object of the present invention is to provide a method for transmitting channel quality indication. To achieve the above object, the technical solution of the present invention is implemented as follows:

The present invention provides a method for transmitting a channel quality indicator, the method, including: after receiving a HS-DSCH data packet, the terminal triggers an uplink HS-DPCCH feedback, where the feedback is that the terminal sends the E-DCH resource. a physical channel carrying CQI information and an E-RNTI identifier;

The Node B establishes a correspondence between the E-DCH resource and the terminal, and obtains a CQI for transmitting data to the terminal in the downlink direction by using the corresponding relationship.

Before the terminal receives the data packet of the HS-DSCH in the downlink, the method further includes: the terminal camps in the cell, and is in the cell forward access channel state, and the radio network controller allocates the H-RNTI identifier to the terminal. And the E-RNTI identifier, and sent to Node B.

The uplink HS-DPCCH feedback triggered by the terminal after receiving the data packet of the HS-DSCH in the downlink includes:

After receiving the first packet data through the HS-DSCH, the terminal sends the physical random access channel preamble in the uplink direction; after receiving the physical random access channel preamble, the node B sends a positive acknowledgement to the terminal, and allocates to the terminal. The E-DCH resource used by the terminal; the terminal transmitting the HS-DPCCH carrying the CQI information measured by the terminal, and the E-DPDCH carrying the E-RNTI identifier of the terminal, and the DPCCH and the E-DPCCH;

After receiving the second packet data or subsequent data through the HS-DSCH, the terminal sends the HS-DPCCH carrying the CQI information measured by the terminal, and the DPCCH.

The Node B establishes the correspondence between the E-DCH resource and the terminal, and the following: The Node B records the correspondence between the E-DCH resource and the E-RNTI identifier, and then according to the correspondence between the E-RNTI identifier and the H-RNTI identifier. Relationship, establish the correspondence between the E-DCH resource and the terminal. The H-RNTI identifier is: a unique identifier that reflects the identity of the receiving terminal when receiving the HS-DSCH in the downlink direction;

The E-RNTI identifier is: when the terminal sends the E-DCH in the uplink direction, the unique identifier that reflects the identity of the sending terminal;

The E-DCH resource is uniquely identified by an E-DCH resource index number.

The present invention further provides an apparatus for transmitting a channel quality indicator, where the apparatus is a terminal, and the terminal is configured to trigger an uplink HS-DPCCH feedback after the downlink receiving node B transmits a data packet by using the HS-DSCH, The feedback is that the terminal sends a physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource.

The terminal resides in a cell and is in a cell forward access channel state. After the downlink receiving the HS-DSCH data packet, the terminal triggers the uplink HS-DPCCH feedback, including: after the terminal receives the first packet data through the HS-DSCH, and sends the physical random access channel preamble in the uplink direction; After receiving the forward acknowledgment and the E-DCH resource allocated to the terminal, the terminal sends the HS-DPCCH carrying the CQI information measured by the terminal, and the E-DPDCH carrying the E-RNTI identifier of the terminal, and the DPCCH and E -DPCCH;

The present invention also provides an apparatus for transmitting a channel quality indicator, where the apparatus is a Node B, and the Node B is configured to receive, by the terminal, a physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource. Then, establishing a correspondence between the E-DCH resource and the terminal, and obtaining, by using the corresponding relationship, a CQI for transmitting data to the terminal in a downlink direction.

The Node B is further configured to receive and save the radio network controller to allocate the H-RNTI identifier and the E-RNTI identifier to the terminal, and after receiving the preamble of the physical random access channel, send a positive acknowledgement to the terminal, and The E-DCH resource allocated to the terminal. Method and device for transmitting channel quality indication provided by the present invention, terminal downlink receiving

After the data packet of the HS-DSCH, the uplink HS-DPCCH feedback is triggered, where the feedback is that the terminal sends the physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource; the Node B establishes the E-DCH resource. Corresponding relationship with the terminal, and obtaining the CQI of the transmission data of the terminal in the downlink direction by the corresponding relationship. The above method and apparatus can enable the triggering of transmitting the HS-DPCCH based on the downlink activity, that is, triggering the feedback of the uplink HS-DPCCH after receiving the HS-DSCH data in the downlink, and enabling the transmission of the HS-DPCCH after obtaining the positive acknowledgement of the acquisition channel. Immediately, ensure that the delay of the HS-DPCCH is as small as possible with respect to the corresponding downlink activity, that is, downlink receiving HS-DSCH data. DRAWINGS

1 is a schematic flow chart of a method for transmitting a channel quality indicator according to the present invention;

1 is a system for transmitting a channel quality indicator according to the present invention;

3 is a schematic structural diagram of a signaling flow of an embodiment of a transmission channel quality indication according to the present invention; FIG. 4 is a schematic flowchart of a processing method of a terminal in a transmission channel quality indication process according to the present invention;

FIG. 5 is a schematic flowchart of a processing method of a node B in a process of indicating a quality of a transmission channel according to the present invention. detailed description

The basic idea of the present invention is: After receiving the HS-DSCH data packet, the terminal triggers the uplink HS-DPCCH feedback, and the feedback is that the terminal sends the physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource. The Node B establishes a correspondence between the E-DCH resource and the terminal, and obtains a CQI of the transmission data of the downlink direction to the terminal by using the corresponding relationship.

The technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments. 1 is a schematic flowchart of a method for transmitting a channel quality indication according to the present invention, as shown in FIG. The method includes:

Step 101: After receiving the data packet of the HS-DSCH, the terminal triggers the uplink HS-DPCCH feedback, where the feedback is that the terminal sends the physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource.

Specifically, after receiving the HS-DSCH data packet, the terminal triggers the uplink HS-DPCCH feedback, where the feedback is that the terminal sends the physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource, including: After receiving the first packet data by the HS-DSCH, the terminal sends the physical random access channel preamble in the uplink direction; after receiving the physical random access channel preamble, the node B sends a positive acknowledgement to the terminal, and allocates to the terminal. The E-DCH resource used; the terminal transmits the HS-DPCCH carrying the CQI information measured by the terminal, and the E-DPDCH carrying the E-RNTI identifier of the terminal, and the DPCCH and the E-DPCCH. After receiving the second packet data or subsequent data through the HS-DSCH, the terminal sends the HS-DPCCH carrying the CQI information measured by the terminal, and the DPCCH. The E-DCH resource is uniquely identified by an E-DCH resource index number.

Further, before step 101, the method further includes: the terminal camps in the cell, and is in a cell forward access channel state, and the radio network controller allocates the H-RNTI identifier and the E-RNTI identifier to the terminal, and sends the identifier to the node. B.

Specifically, the H-RNTI identifier is specifically: when the terminal receives the HS-DSCH in the downlink direction, the unique identifier of the identity of the receiving terminal is embodied. The E-RNTI identifier is specifically: when the terminal sends the E-DCH in the uplink direction, the unique identifier of the identity of the sending terminal is embodied.

Step 102: The Node B establishes a correspondence between the E-DCH resource and the terminal, and obtains a CQI for transmitting data to the terminal in the downlink direction by using the corresponding relationship.

Specifically, the Node B records the correspondence between the E-DCH resource, that is, the E-DCH resource index number, and the E-RNTI identifier, and then establishes the E-DCH resource and the terminal according to the correspondence between the E-RNTI identifier and the H-RNTI identifier. Correspondence relationship, that is, the pair of E-DCH resource index number and H-RNTI identifier Should be related. The CQI information is parsed from the HS-DPCCH received on the E-DCH resource identified by the E-DCH resource index number by the correspondence between the E-DCH resource and the terminal, and is the terminal that identifies the H-RNTI in the downlink direction. , CQI information of data transmitted through the HS-DSCH.

FIG. 1 is a system for transmitting a channel quality indicator according to the present invention. As shown in FIG. 2, the system includes two devices, namely, a terminal 21 and a node B22, where

The terminal 21 is configured to trigger the uplink HS-DPCCH feedback after the downlink receiving node B22 sends the data packet sent by the HS-DSCH, where the feedback is that the terminal 21 sends the CQI information and the E-RNTI on the E-DCH resource. The physical channel identified.

Specifically, after receiving the HS-DSCH data packet, the terminal 21 triggers the uplink HS-DPCCH feedback, where the feedback is that the terminal 21 sends the physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource. The method includes: after the terminal 21 receives the first packet data through the HS-DSCH, and sends the physical random access channel preamble in the uplink direction; the terminal 21 sends the HS-DPCCH carrying the CQI information measured by the terminal 21, and the E- E-DPDCH identified by RNTI, and DPCCH and E-DPCCH. After the terminal 21 receives the second packet data or subsequent data through the HS-DSCH, the terminal 21 transmits the HS-DPCCH carrying the CQI information measured by the terminal 21, and the DPCCH. The E-DCH resource is uniquely identified by an E-DCH resource index number. Further, after receiving the preamble of the physical random access channel, the node B22 sends a positive acknowledgement to the terminal and an E-DCH resource allocated to the terminal.

The Node B22 is configured to: after receiving, by the terminal 21, the physical channel that carries the CQI information and the E-RNTI identifier on the E-DCH resource, establish a correspondence between the E-DCH resource and the terminal 21, and The correspondence relationship obtains a CQI for transmitting data to the terminal 21 in the downlink direction.

Specifically, the node B22 records the correspondence between the E-DCH resource, that is, the E-DCH resource index number, and the E-RNTI identifier, and then establishes the E-DCH resource and the terminal according to the correspondence between the E-RNTI identifier and the H-RNTI identifier. Correspondence relationship between 21, that is, the correspondence between the E-DCH resource index number and the H-RNTI identifier. Obtaining the E-DCH resource from the correspondence between the E-DCH resource and the terminal 21 The CQI information is parsed in the HS-DPCCH received on the E-DCH resource identified by the index number, and is CQI information for transmitting the data through the HS-DSCH to the terminal 21 identified by the H-RNTI in the downlink direction.

Further, the terminal 21 resides in the cell and is in the cell forward access channel state; the node B22 is further configured to receive and save the radio network controller to allocate the H-RNTI identifier and the E-RNTI to the terminal 21. Logo.

Specifically, the H-RNTI identifier is specifically: when the terminal 21 receives the HS-DSCH in the downlink direction, it embodies a unique identifier of the identity of the receiving terminal. The E-RNTI identifier is specifically: when the terminal 21 sends the E-DCH in the uplink direction, the unique identifier of the identity of the sending terminal is embodied.

The invention is further illustrated below in conjunction with specific embodiments. The premise of the embodiments in FIG. 3 to FIG. 5 is as follows: The terminal resides in the cell and is in the state of the cell forward access channel. The radio network controller has assigned the terminal a unique terminal identifier H-RNTI when receiving the HS-DSCH in the downlink direction, and a unique terminal identifier E-RNTI when the E-DCH is transmitted in the uplink direction. The radio network controller informs the Node B and the terminal of the H-RNTI and E-RNTI of the terminal.

FIG. 3 is a schematic structural diagram of a signaling flow of an embodiment of a transmission channel quality indicator according to the present invention. As shown in FIG. 3, the signaling process includes:

Step 301: Node B sends the first packet data to the terminal through the HS-DSCH.

Specifically, the terminal receives the first packet data belonging to itself from the HS-DSCH in the downlink direction. The Node B sends the data to the terminal, specifically, the corresponding HS-SCCH uses the H-RNTI specific to the terminal, that is, the H-RNTI allocated by the radio network controller as a mask; and the terminal receives the data belonging to itself, specifically The corresponding HS-SCCH uses this terminal-specific H-RNTI as a mask.

Step 302: The terminal sends a physical random access channel preamble in an uplink direction.

Specifically, the Node B receives the physical random access channel preamble sent by the terminal.

Step 303: The Node B sends a positive confirmation to the terminal, and is allocated to the terminal for use. E-DCH resources;

Specifically, the Node B sends a forward acknowledgement to the terminal by using the capture indication channel and an E-DCH resource allocated by the Node B to the terminal. The E-DCH resource is uniquely identified by an E-DCH resource index number. The terminal receives a positive acknowledgment from the acquisition indicator channel and an E-DCH resource allocated by the node B for use by the terminal.

Step 304: The terminal sends, on the E-DCH resource, four physical channels that carry CQI information and an E-RNTI identifier.

Specifically, the terminal sends four physical channels: DPCCH, HS-DPCCH, E-DPCCH, and E-DPDCH; wherein, the HS-DPCCH carries the CQI information measured by the terminal; and the E-DPDCH carries a MAC PDU (protocol data). Unit physical address;), the header of the MAC PDU carries the E-RNTI of the terminal.

The Node B receives four physical channels, DPCCH, HS-DPCCH, E-DPCCH, and E-DPDCH, from the E-DCH resource. Further, the Node B parses the CQI information from the HS-DPCCH and parses the E-RNTI identifier of the terminal from the E-DPDCH.

Step 305: Node B establishes a correspondence between the E-DCH resource and the terminal.

Specifically, the Node B records the correspondence between the E-DCH resource index number and the E-RNTI; the Node B establishes the E-DCH resource index number and the H-RNTI according to the correspondence between the E-RNTI and the H-RNTI. - the corresponding relationship.

Step 306, the Node B obtains the CQI of the transmission data of the corresponding terminal of the H-RNTI identifier according to the correspondence between the E-DCH resource and the terminal;

Specifically, the Node B learns the HS received from the E-DCH resource identified by the E-DCH resource index number in step 304 according to the established correspondence between the E-DCH resource index number and the H-RNTI. The CQI information is parsed in the DPCCH, and is CQI information that is transmitted by the terminal corresponding to the H-RNTI identifier in the downlink direction through the HS-DSCH.

Step 307: The Node B sends the next packet data to the terminal through the HS-DSCH. Specifically, the Node B sends data to the terminal, where the corresponding HS-SCCH uses the H-RNTI specific to the terminal as a mask. Further, the terminal receiving the data belonging to itself means that the corresponding HS-SCCH uses the H-RNTI specific to the terminal as a mask.

Step 308: The terminal sends, on the E-DCH resource, two physical channels that carry CQI information and an E-RNTI identifier.

Specifically, the terminal sends two physical channels, DPCCH and HS-DPCCH. The HS-DPCCH carries the CQI information measured by the terminal. Node B receives two physical channels, DPCCH and HS-DPCCH, from the specified E-DCH resource, and Node B parses the CQI information from the HS-DPCCH.

Step 309: The Node B obtains a CQI for transmitting data to the H-RNTI identifier corresponding terminal according to the correspondence between the E-DCH resource and the terminal H-RNTI.

Specifically, the Node B learns the HS received from the E-DCH resource identified by the E-DCH resource index number in step 308 according to the established correspondence between the E-DCH resource index number and the H-RNTI. The CQI information is parsed in the DPCCH, and is CQI information that is transmitted by the terminal corresponding to the H-RNTI identifier in the downlink direction through the HS-DSCH.

Further, for the Node B to send the Nth packet data (N>2) to the terminal through the HS-DSCH, and the terminal receives the Nth packet data (N>2) belonging to itself from the HS-DSCH in the downlink direction. , repeat steps 307 to 309.

4 is a schematic flowchart of a processing method of a terminal in a process of indicating a quality of a transmission channel according to the present invention. As shown in FIG. 4, the method includes:

Step 401: The terminal receives the first packet data that belongs to itself from the HS-DSCH in the downlink direction. Specifically, the terminal receives the data that belongs to itself, and the corresponding HS-SCCH uses the specific H-RNTI of the terminal as a mask.

Step 402: The terminal sends a physical random access channel preamble in an uplink direction.

Step 403: The terminal receives a positive acknowledgement from the capture indication channel, and allocates to the terminal. E-DCH resources used by the terminal;

Step 404: The terminal sends, on the E-DCH resource, four physical channels that carry CQI information and an E-RNTI identifier.

Specifically, the terminal sends four physical channels: DPCCH, HS-DPCCH, E-DPCCH, and E-DPDCH; wherein, the HS-DPCCH carries the CQI information measured by the terminal; and the E-DPDCH carries a MAC PDU, where The header of the MAC PDU carries the E-RNTI of this terminal.

Step 405: The terminal receives the next packet data belonging to itself from the HS-DSCH in the downlink direction. Specifically, the terminal receives the data belonging to itself, and the corresponding HS-SCCH uses the specific H-RNTI of the terminal as a mask.

Step 406: The terminal sends, on the E-DCH resource, two physical channels that carry CQI information and an E-RNTI identifier.

Specifically, the terminal sends two physical channels, DPCCH and HS-DPCCH, and does not need to send two physical channels, E-DPCCH and E-DPDCH. The HS-DPCCH carries the CQI information measured by the terminal.

Further, for the process in which the terminal receives the Nth packet data (N>2) belonging to itself from the HS-DSCH in the downlink direction, the steps 405 to 406 are repeated.

FIG. 5 is a schematic flowchart of a processing method of a node B in a process of indicating a quality of a transmission channel according to the present invention. As shown in FIG. 5, the method includes:

Step 501: Node B sends the first packet data to the terminal through the HS-DSCH.

Specifically, the Node B sending data to the terminal means that the corresponding HS-SCCH uses the H-RNTI specific to the terminal as a mask. Step 502: The Node B receives the physical random access channel preamble sent by the terminal. Step 503: The Node B sends a forward acknowledgement to the terminal, and the E-DCH resource allocated to the terminal.

Step 504: Node B receives, from the E-DCH resource, four physical channels that carry CQI information and an E-RNTI identifier.

Specifically, the Node B receives four physical channels: DPCCH, HS-DPCCH, E-DPCCH, and E-DPDCH. Node B parses the CQI information from the HS-DPCCH. Node B parses the E-RNTI identifier of the terminal from the E-DPDCH.

Step 505: Node B establishes a correspondence between the E-DCH resource and the terminal.

Step 506: The node B obtains a CQI for transmitting data of the corresponding terminal of the H-RNTI identifier according to the correspondence between the E-DCH resource and the terminal;

Specifically, the Node B learns the HS received from the E-DCH resource identified by the E-DCH resource index number in step 504 according to the established correspondence between the E-DCH resource index number and the H-RNTI. The CQI information is parsed in the DPCCH, and is CQI information that is transmitted by the terminal corresponding to the H-RNTI identifier in the downlink direction through the HS-DSCH.

Step 507: Node B sends the next packet data to the terminal through the HS-DSCH.

Specifically, the Node B sends data to the terminal, where the corresponding HS-SCCH uses the H-RNTI specific to the terminal as a mask. Step 508: The Node B receives, from the E-DCH resource, two physical channels that carry CQI information and an E-RNTI identifier.

Specifically, the Node B receives the two physical channels, DPCCH and HS-DPCCH, from the specified E-DCH resource. Node B parses the CQI information from the HS-DPCCH.

Step 509: The Node B obtains a CQI of the transmission data of the H-RNTI identifier corresponding terminal according to the correspondence between the E-DCH resource and the terminal H-RNTI.

Specifically, the Node B learns the HS received from the E-DCH resource identified by the E-DCH resource index number in step 680 according to the established correspondence between the E-DCH resource index number and the H-RNTI. The CQI information is parsed in the DPCCH, and is CQI information that is transmitted by the terminal corresponding to the H-RNTI identifier in the downlink direction through the HS-DSCH.

For the process in which the Node B sends the Nth packet data (N>2) to the terminal through the HS-DSCH, the steps 507 to 509 are repeated.

Industrial Applicability: According to the present invention, the trigger for transmitting the HS-DPCCH can be based on the downlink activity, that is, the downlink HS-DPCCH is triggered after the downlink receiving the HS-DSCH data, and the transmission of the HS-DPCCH can be obtained in the forward direction of the acquisition channel. Immediately after the acknowledgment, the delay of the HS-DPCCH is ensured, and the downlink receiving HS-DSCH data is as small as possible with respect to the corresponding downlink activity.

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

Claims

Claim

A method for transmitting a channel quality indicator, the method, comprising: after a terminal receives a data packet of a high speed downlink shared channel (HS-DSCH) in a downlink, triggering an uplink high-speed dedicated physical control channel (HS-DPCCH) Feedback, the feedback is that the terminal transmits a physical channel carrying channel quality indicator (CQI) information and an E-DCH radio network temporary (E-RNTI) identifier on the enhanced dedicated transport channel (E-DCH) resource;

The method according to claim 1, wherein before the terminal receives the data packet of the HS-DSCH, the method further includes:

The terminal resides in the cell and is in the cell forward access channel state. The radio network controller allocates a high speed downlink shared channel radio network temporary (H-RNTI) identifier and an E-RNTI identifier to the terminal, and sends the signal to the node B.

The method according to claim 1 or 2, wherein, after receiving the data packet of the HS-DSCH in the downlink, the terminal triggers the uplink HS-DPCCH feedback, including:

After receiving the first packet data through the HS-DSCH, the terminal sends the physical random access channel preamble in the uplink direction; after receiving the physical random access channel preamble, the node B sends a positive acknowledgement to the terminal, and allocates to the terminal. E-DCH resource used; the terminal transmits an HS-DPCCH carrying CQI information measured by the terminal, and an E-DCH dedicated physical data channel (E-DPDCH) carrying the E-RNTI identifier of the terminal, and a dedicated physical control channel (DPCCH) And E-DPCCH;

After receiving the second packet data or subsequent data through the HS-DSCH, the terminal sends the HS-DPCCH carrying the CQI information measured by the terminal, and the dedicated physical control channel (DPCCH).

The method according to claim 2, wherein the node B establishes a correspondence between the E-DCH resource and the terminal, where: the Node B records the correspondence between the E-DCH resource and the E-RNTI identifier, And then establishing according to the correspondence between the E-RNTI identifier and the H-RNTI identifier. Correspondence between E-DCH resources and terminals.

The method according to claim 4, wherein the H-RNTI identifier is: a unique identifier that reflects the identity of the receiving terminal when receiving the HS-DSCH in the downlink direction;

The E-DCH resource is uniquely identified by an E-DCH resource index number.

A device for transmitting a channel quality indicator, wherein the device is a terminal, and the terminal is configured to trigger an uplink HS-DPCCH feedback after the downlink receiving node B transmits the data packet through the HS-DSCH. The feedback is that the terminal sends a physical channel carrying the CQI information and the E-RNTI identifier on the E-DCH resource.

The apparatus according to claim 6, wherein the terminal camps in a cell and is in a cell forward access channel state.

The device according to claim 6 or 7, wherein, after receiving the data packet of the HS-DSCH in the downlink, the terminal triggers the uplink HS-DPCCH feedback, including:

After receiving the first packet data through the HS-DSCH, the terminal sends the physical random access channel preamble in the uplink direction; after receiving the forward acknowledgement, and the E-DCH resource allocated to the terminal, the terminal transmits the mobile terminal measurement HS-DPCCH of CQI information, E-DPDCH of E-RNTI identity carrying the terminal, and DPCCH and E-DPCCH;

A device for transmitting a channel quality indicator, wherein the device is a Node B, and the Node B is configured to receive, by the terminal, the PHY that carries the CQI information and the E-RNTI identifier on the E-DCH resource. After the channel, the corresponding relationship between the E-DCH resource and the terminal is established, and the CQI for transmitting data to the terminal in the downlink direction is obtained by using the corresponding relationship.

The device according to claim 9, wherein the node B is further used for Receiving and saving the radio network controller, assigning the H-RNTI identifier and the E-RNTI identifier to the terminal, and after receiving the preamble of the physical random access channel, sending a positive acknowledgement to the terminal, and assigning the E-DCH to the terminal for use. Resources.