CN101242245B - A method and device for processing response message - Google Patents

Abstract

The present invention provides a method for sending or receiving response information, which is applied to communication systems using different scheduling methods. The method includes: for the case of using a dynamic scheduling method, implicitly notify the user in the scheduling signaling sent to the user The position of the occupied response channel, the user sends or receives the response information according to the position of the response channel corresponding to the position of the scheduling signaling channel; for the case of using the scheduling method of saving scheduling signaling, it is explicitly notified in the scheduling information sent to the user The position of the response channel occupied by the user, and the user sends or receives response information according to the position of the response channel. Therefore, the technical gap in the prior art that lacks a method for sending response information in a scheduling mode that saves scheduling signaling is filled.

Description

A method and device for processing response information

technical field

The invention relates to wireless communication technology, in particular to a method and a device for a user to determine a response channel and process response information.

Background technique

Automatic Repeat reQuest (ARQ, Automatic Repeat reQuest) is a transmission mechanism used to ensure the reliability of transmission. When the previous transmission attempt fails, the data packet is required to be retransmitted. HARQ (HybridARQ) is an improvement of the ARQ protocol. It introduces a FEC subsystem in the ARQ system. This FEC subsystem is used to correct errors to reduce the number of retransmissions. SAW (Stop and Wait) is the most Simple HARQ form: the sender starts to process the next data block only after the sent data block is correctly received, and the receiver should transmit a response message to the sender indicating whether the transmission block is correctly decoded, usually an acknowledgment Correct information and confirmation error information (ACK/NAK, ACKnowledgment/Negative AcKnowledgement), this kind of confirmation information generally uses one bit. N-channel wait-and-stop HARQ (N-channel-SAW-HARQ) is a HARQ process in which N SAWs are performed in parallel on one channel at the same time. When the downlink is used to transmit data blocks by a certain HARQ process, the uplink is used to transmit response information of other HARQ processes.

In order for the user to accurately receive the data sent by the base station, the base station needs to notify the user in advance of certain information related to data reception. This information related to data reception is also called scheduling signaling, and generally includes:

Resource allocation indication information, generally occupying 7 bits;

IIARQ process information, generally occupying 3 bits;

User Equipment Identity (UE ID, User Equipment Identity), generally occupying 16 bits.

When the above-mentioned scheduling signaling is issued by the base station, the user first identifies the UE ID information; after receiving the data sent to him at a certain location, after receiving processing, it is verified and judged whether the received data is correct; Feedback acknowledgment information ACK/NAK, these multiple acknowledgment information from different users are transmitted to the base station through the respective dedicated acknowledgment channels of each user. Sending the scheduling signaling requires transmission delay and data processing time after the receiver receives the data, so there is a certain time interval between the time of the response information corresponding to the time of the scheduling information.

There are different scheduling methods during the scheduling process, one is dynamic scheduling: each data transmission of the user has a corresponding scheduling signaling notification; the other is a scheduling method that saves control signaling: in order to save control signaling Overhead, some scheduling methods that save control signaling are introduced, such as: persistent scheduling (persistent scheduling), scheduling information is sent at certain times, and known scheduling information is used according to established rules at other times.

Since data transmission resources are shared, it is hoped that the response channel is also shared: that is, one user does not exclusively occupy a certain response channel. Then, when a user needs to process response information, generally send or receive response information, he needs to know which response channel he uses.

Because there is a logical relative relationship between the scheduling signaling of one user and the scheduling signaling of other users, this relationship can also be referred to when feeding back the acknowledgment information ACK/NAK, so as to avoid conflicts and collisions between users during feedback, and no additional Signaling notification: the relative relationship between the multi-user data response channels is consistent with the relative relationship between the multi-user control signaling channels for scheduling the data, as shown in Figure 1 .

The process for the user to determine the response channel in the prior art includes:

Send scheduling signaling for multiple users scheduled this time;

Each user checks whether there is a scheduling signal sent to itself according to the established rules;

The user who finds the scheduling signaling determines the logical position of his own response channel according to the logical position of the scheduling signaling sent to him in all the scheduling signaling this time;

Each currently scheduled user sends or receives response information according to the determined logical position of the response channel.

For example: if a user's scheduling signaling is sent on the third control signaling channel, then the user selects the third acknowledgment channel to send or receive acknowledgment information ACK/NAK.

However, the above method is applicable to the scenario of dynamic scheduling, and for the scheduling method of saving control signaling, the data transmission of some users has no scheduling signaling indication in the current time transmission unit, and these users cannot determine the response channel between them and other users. The relative relationship, unable to select the appropriate response channel.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method and system for sending or receiving response information in various scheduling modes;

Provided are a method for a user to send or receive response information in a scheduling mode that saves scheduling signaling, as well as a scheduling device and a user terminal applying the method.

In order to solve the above technical problems, the embodiment of the present invention provides a method for sending or receiving response information, which is applied to communication systems using different scheduling methods. The method includes: selecting a notification response channel according to the scheduling method currently used by the system The method of location; for the case of using the dynamic scheduling method, the location of the response channel occupied by the user is implicitly notified in the scheduling information sent to the user, and the user sends or receives the response information according to the location of the response channel corresponding to the location of the scheduling information channel. For the case of adopting the scheduling method of saving scheduling signaling, the location of the response channel occupied by the user is explicitly notified in the scheduling information sent to the user, and the user sends or receives response information according to the location of the response channel.

Also provided is a method for sending or receiving response information, which is applied to a communication system using a scheduling mode that saves scheduling signaling, the method includes: Step 101, explicitly notifying the user of the occupied response in the scheduling information sent to the user channel location. Step 102, the user sends or receives response information according to the received response channel position.

And, a system for sending or receiving response information, which is applied to communication systems using different scheduling methods, the system includes: a selection device for selecting a method of notifying the position of the response channel according to the scheduling mode of the system; notifying the position of the response channel The device is used for implicitly notifying the position of the response channel occupied by the user in the scheduling information sent to the user when the dynamic scheduling method is adopted; and, when the system adopts the scheduling method of saving scheduling signaling, The information explicitly notifies the position of the response channel occupied by the user; the user terminal is configured to send or receive response information according to the position of the response channel corresponding to the position of the scheduling information channel according to the mode of notifying the position of the response channel selected by the selection device, and , sending or receiving response information according to the position of the response channel.

And, a scheduling device, used for scheduling communication resources, the device includes:

The reply channel position notification module is used to explicitly notify the user of the occupied reply channel position in the scheduling information sent to the user.

And, a user terminal, used to send or receive response information, the user terminal includes:

The receiving and parsing module receives the sent scheduling information, and parses out the response channel position information explicitly notified in the scheduling information; the sending or receiving response information module is used to send or receive the response information according to the response channel position.

The above method and device for sending or receiving response information in the scheduling mode of saving scheduling signaling solves the problem of sending or receiving response information in the scheduling mode of saving scheduling signaling; it also solves the problem of sending or receiving response information in a system where various scheduling modes coexist. Answer informational questions. Therefore, the technical gap in the prior art that lacks a method for sending response information in a scheduling mode that saves scheduling signaling is filled.

Description of drawings

FIG. 1 is a schematic diagram of the relationship between the response channel of multi-user data and the control signaling channel in the prior art;

Fig. 2 is the method flowchart of the second embodiment of the present invention;

Fig. 3 is a flow chart of the method of the third embodiment of the present invention;

FIG. 4 is a schematic diagram of the relationship between the position of the user response channel and the position of the scheduling information channel according to the third embodiment of the present invention;

FIG. 5 is a schematic diagram of the relationship between the position of the user response channel and the position of the scheduling information channel according to the third embodiment of the present invention;

Fig. 6 is a flow chart of the method of the first embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific implementation modes in conjunction with the accompanying drawings.

In the specific implementation manner of the present invention, a communication system adopting different scheduling modes is taken as an example for introduction. There are various situations in which different scheduling methods are used above. For example, at the same time, the system uses different scheduling methods for different communication resources, or, on the same communication resource, the system uses different scheduling methods for different times, or, Combining the above situations, the system adopts different scheduling methods for different communication resources at different times. Generally speaking, in this kind of system, there are two transmission modes at specific transmission time and transmission resources, one is to adopt dynamic scheduling mode, and the other is to save scheduling signaling.

The processing response information in the following embodiments generally refers to sending or receiving response information.

Referring to Fig. 6, in the above-mentioned communication systems using different scheduling methods, the process of processing response information is as follows:

For the case of adopting the dynamic scheduling method, the scheduling information sent to the user by the scheduling party implicitly informs the user of the occupied response channel position.

The above implicit notification means that the position of the scheduling signaling channel is consistent with the position of the response channel, and the user sends or receives response information according to the position of the response channel corresponding to the position of the scheduling signaling channel.

For the case of adopting the scheduling method that saves scheduling signaling, the location of the response channel occupied by the user is explicitly notified in the scheduling information sent by the scheduling party to the user.

In the case of adopting a scheduling method that saves scheduling signaling, the user sends response information according to the response channel position in the above scheduling information.

In the following, specific implementation methods will be given again to describe in detail the process of the user sending or receiving response information in the case of using the scheduling method of saving scheduling signaling in the above embodiment, or for a communication system that only adopts the scheduling method of saving scheduling signaling .

Referring to Figure 2, for the scheduling mode that saves scheduling signaling, the process for the user to process the response information is as follows:

Step 101. In the scheduling information sent to the user by the scheduler, the user is explicitly notified of the position of the response channel occupied by the user.

The above scheduling information may be physical layer signaling or high layer signaling, etc., and is collectively referred to as scheduling information here. Specifically, the explicit notification may be adding a field in the scheduling information, and the field indicates the location of the response channel allocated to the destination user pointed to by the scheduling information.

Step 102, the user processes the response information according to the response channel position in the received scheduling information.

For the above-mentioned second implementation manner, according to the difference in step 102, it can be divided into two specific implementation manners:

In one embodiment, referring to FIG. 3, the specific process for the user to process the response information is as follows:

Step 201: In the scheduling information sent to the user by the scheduler, explicitly notify the user of the occupied response channel position. Same as step 101.

Step 202, within the response time corresponding to the effective time of the scheduling information, the user processes the response information according to the response channel position explicitly notified by the scheduling information.

The validity time of the above scheduling information is the same as the corresponding response time duration, but the time starting point is different.

The second embodiment above will be described in detail below by taking the persistent scheduling mode as an example. The persistent scheduling (persistent scheduling) method is a scheduling method that saves scheduling signaling.

As shown in Figure 4, the scheduler sends scheduling information, which schedules three time transmission units t ₁ , t ₂ , and t ₃ to the user, and the scheduling information explicitly notifies the user of the occupied response channel position; t ₁ , t ₂ , t ₃ are continuous, and the above scheduling information is valid from t ₁ to t ₃ .

Corresponding users at the time _t'1 to _t'3 corresponding to the above-mentioned _t1 - _t3 respond, all send or receive the response information by explicitly notifying the response channel position occupied by the user in the above-mentioned scheduling information.

As shown in Figure 5, the scheduler sends scheduling information, which schedules three time transmission units t ₁ , t ₂ , and t ₃ to the user, and the scheduling information explicitly notifies the user of the occupied response channel position; t ₁ , t ₂ , t ₃ are discontinuous, and the above scheduling information is valid at time t ₁ , t ₂ , and t ₃ .

Correspondingly, at the time t′ ₁ , t′ ₂ , and t′ ₃ when the user responds corresponding to the above t ₁ , t ₂ , and t ₃ , the user is explicitly notified in the above scheduling information of the response channel position occupied by the user to send or Receive response information.

The above method of sending or receiving response information in the scheduling mode of saving scheduling signaling solves the problem of sending or receiving response information in the scheduling mode of saving scheduling signaling through the above method of sending or receiving response information; it also solves various The issue of sending or receiving response information in a system where scheduling modes coexist. At the same time, because the effective time of the response channel corresponds to the effective time of the scheduling information, such a response channel can be time-division multiplexed by multiple users, thereby improving the use efficiency and saving system resources.

Another implementation is:

Step 301. In the scheduling information sent by the scheduler to the user, the user is explicitly notified of the position of the response channel occupied by the user. Same as step 101.

Step 302, the user processes the response information according to the response channel position in the scheduling information received for the first time.

In this implementation manner, the above-mentioned response channel is dedicated, that is, the same response channel position is explicitly notified in the subsequent scheduling information of the user or the response channel position is not explicitly notified again.

The embodiment of the present invention also provides a system for processing response information in a communication system using different scheduling methods:

The device for notifying the position of the response channel is used for implicitly notifying the position of the response channel occupied by the user in the scheduling information sent by the scheduler to the user when the dynamic scheduling mode is adopted; and, when the system adopts the scheduling mode of saving scheduling signaling, In the scheduling information sent by the scheduler to the user, the user is explicitly notified of the position of the response channel occupied by the user.

The user terminal is configured to process the response information according to the response channel position in the scheduling information according to the method of notifying the response channel position selected by the selection means, or process the response information according to the response positions corresponding to the positions of the scheduling signaling.

The embodiment of the present invention also provides a scheduling device, including:

The response channel position notification module is used to explicitly notify the user of the occupied response channel position in the scheduling information sent by the scheduler to the user.

The embodiment of the present invention also provides a user terminal, including:

The receiving and parsing module receives the scheduling information sent by the dispatcher, and parses out the position information of the response channel displayed and notified in the scheduling information.

The response information processing module is configured to process the response information according to the position of the response channel.

Further, the module for processing response information is specifically configured to process the response information according to the position of the response channel parsed out for the first time.

Alternatively, the processing response information module is specifically configured to process the response information according to the response channel position of the user within the response time corresponding to the effective time of the scheduling information.

Above, a method for processing response information provided by the specific embodiments of the present invention and its equipment have been introduced in detail. The principles and implementation methods of the present invention have been explained by applying the specific embodiments in this paper. The descriptions of the above embodiments are only used To help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, this specification The content should not be construed as a limitation of the invention.

Claims (10)

1. A method for processing response message, which is applied in communication system adopting multiple scheduling modes, is characterized in that the method comprises:

for the condition of adopting a dynamic scheduling mode, a user receives a scheduling signaling sent to the user, the scheduling signaling implicitly informs a response channel position occupied by the user, and the user processes response information according to the response channel position corresponding to the position of the scheduling signaling channel;

for the condition of adopting a scheduling mode of saving scheduling signaling, a user receives scheduling information sent to the user, the scheduling information explicitly informs a response channel position occupied by the user, the user processes the response information according to the response channel position, and the scheduling information is physical layer signaling.

2. The method according to claim 1, wherein the process of the user processing the response information according to the response channel location is specifically:

and in response time corresponding to the effective time of the scheduling information, the user processes response information according to the response channel position explicitly notified by the scheduling information.

3. The method according to claim 1, wherein the process of the user processing the response information according to the response channel location is specifically:

and the user processes the response information according to the response channel position in the scheduling information received for the first time.

4. A method for processing response information is characterized in that when a scheduling mode for saving scheduling signaling is adopted, a user receives scheduling information sent to the user, the scheduling information explicitly informs a response channel position occupied by the user, and the user processes the response information according to the received response channel position, wherein the scheduling information is physical layer signaling.

5. The method for processing the response message according to claim 4, wherein the processing of the response message by the user according to the received response channel position specifically comprises:

in the response time corresponding to the effective time of the scheduling information, the user processes the response information according to the received response channel position; or,

and the user processes the response information according to the first received response channel position.

6. A system for processing response messages in a communication system using different scheduling schemes, the system comprising:

a device for informing the position of the response channel, which is used for implicitly informing the position of the response channel occupied by the user in the scheduling information sent to the user for the condition of adopting a dynamic scheduling mode; when the system adopts a scheduling mode of saving scheduling signaling, explicitly informing the response channel position occupied by the user in scheduling information sent to the user, wherein the scheduling information is physical layer signaling;

and the user terminal is used for processing the response information according to the response channel position corresponding to the position of the scheduling signaling channel and the response information according to the response channel position according to the mode of informing the response channel position selected by the selection device.

7. A scheduling apparatus for scheduling of communication resources, the apparatus comprising:

and the response channel position notification module is used for explicitly notifying the response channel position occupied by the user in the scheduling information sent to the user, wherein the scheduling information is physical layer signaling.

8. A user terminal for processing response information, the user terminal comprising:

the receiving and analyzing module is used for receiving the sent scheduling information and analyzing the response channel position information explicitly notified in the scheduling information, wherein the scheduling information is physical layer signaling;

and the response information processing module is used for processing response information according to the response channel position.

9. The ue of claim 8, wherein the module for processing the response information is specifically configured to process the response information according to a first parsed position of the response channel.

10. The ue of claim 8, wherein the response information processing module is specifically configured to process the response information according to the response channel position within a response time corresponding to a valid time of the scheduling information.

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