WO2012013152A1

WO2012013152A1 - Method, system, and device for feedback information transmission

Info

Publication number: WO2012013152A1
Application number: PCT/CN2011/077724
Authority: WO
Inventors: 林亚男; 沈祖康; 高雪娟
Original assignee: 电信科学技术研究院
Priority date: 2010-07-28
Filing date: 2011-07-28
Publication date: 2012-02-02
Also published as: CN102082643B; CN102082643A

Abstract

The present invention relates to the technical field of wireless communications, particularly to a method, a system, and a device for feedback information transmission, for use in allowing a network-side to be aware of the particular type of transmission mode being adopted by a terminal supporting multiple feedback modes when transmitting a piece of feedback information, thereby improving the performance of the network-side in processing feedback information. The method comprises: the network-side confirming a piece of configuration information, the mode for transmitting the feedback information is being instructed by the configuration information; the network-side transmitting to a terminal the configuration information, for use in instructing the terminal to transmit a piece of feedback information on the basis of the feedback mode as instructed in the configuration information. As the network-side is capable of instructing the particular type of mode to be adopted by the terminal supporting multiple feedback modes when transmitting feedback information, the network-side is aware of the particular type of transmission mode being adopted by the terminal for transmitting feedback information, thereby improving the performance of the network-side in processing feedback information.

Description

Method, system and device for transmitting feedback information The present application claims to be submitted to the Chinese Patent Office on July 28, 2010, the application number is 201010240097.5, and the invention name is "a method, system and device for transmitting feedback information" Priority of the application, the entire contents of which are incorporated herein by reference. Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, system, and device for transmitting feedback information. Background technique

For long-term evolution multi-carrier systems, to support a wider system bandwidth than Long Term Evolution (LTE) systems, such as 100MHz, a spectrum that may directly allocate 100M bandwidth is shown in Figure 1A, which may be assigned to In the existing system, some of the spectrums are aggregated and used to provide a large bandwidth for the long-term evolution of the multi-carrier system. In this case, the uplink and downlink carriers in the system can be asymmetrically configured, that is, the user may occupy N downlink carriers for downlink transmission, occupying M. Uplink carriers are used for uplink transmission, ^{N≠ Μ} , see Figure IB.

When the data on each downlink carrier is independently coded, the terminal will feed back the Hybrid Automatic Repeat reQuest (HARQ) acknowledgment/non-acknowledgement (ACK/NACK) information for each packet on each carrier. Therefore, the terminal may simultaneously feed back multiple ACK/NACK information to the network side in one uplink subframe.

Currently, there are two types of feedback: Physical Uplink Control Channel (PUCCH) feedback based on DFT-Spead-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) The mode and the PUCCH Format lb with channel selection feedback mode using the physical uplink control channel format lb.

The PUCCH Format lb with channel selection feedback mode transmits up to 4 bits of ACK/NACK information, while the DFT-S-OFDM feedback mode transmits up to 48 bits of ACK/NACK information.

Since the terminal supporting the DFT-S-OFDM feedback mode also supports the PUCCH Format lb with channel selection feedback mode, this will cause the terminal to send feedback information, and the network side does not know which feedback mode the terminal uses, which will affect the network side processing. The performance of feedback information.

In summary, at present, the network side cannot know which feedback mode is used by the terminal supporting multiple feedback modes to transmit feedback information, thereby affecting the performance of the network side processing feedback information. Summary of the invention

The embodiment of the invention provides a method and a device for sending configuration information, so that the network side can know to support multiple The feedback mode terminal specifically uses which feedback method to send feedback information.

A method for sending configuration information is provided by an embodiment of the present invention, where the method includes:

The network side determines configuration information, where the configuration information indicates a manner of sending feedback information;

The network side sends the configuration information to the terminal to indicate that the terminal sends the feedback information in the feedback mode indicated by the configuration information.

A network side device, where the network side device includes:

a configuration information determining module, configured to determine configuration information, where the configuration information indicates a manner of sending feedback information, and a sending module, configured to send, to the terminal, configuration information, where the terminal is configured to send feedback information according to the feedback manner indicated by the configuration information .

In this solution, the network side can indicate which feedback mode is used by the terminal that supports multiple feedback modes to send feedback information, so that the network side knows which feedback mode the terminal specifically uses to send feedback information, thereby improving network side processing feedback. The performance of the information.

The embodiment of the invention provides a method, a system and a device for transmitting feedback information, which are used to enable a terminal to send feedback information according to a feedback manner configured by a network side.

A method for sending feedback information provided by an embodiment of the present invention includes:

The terminal receives the configuration information from the network side, where the configuration information is information generated by the network side indicating a manner of sending the feedback information;

The terminal sends the feedback information according to the feedback manner indicated by the configuration information.

A terminal provided by the embodiment of the present invention includes:

a receiving module, configured to receive configuration information from a network side, where the configuration information is information generated by a network side to indicate a manner of sending feedback information;

The feedback module is configured to send the feedback information according to the feedback manner indicated by the configuration information.

A system for transmitting feedback information provided by an embodiment of the present invention includes:

The network side device is configured to determine and send the configuration information, where the configuration information indicates a manner of sending the feedback information, and the terminal is configured to send the feedback information according to the feedback manner indicated by the configuration information.

In this solution, when receiving the configuration information from the network side, the terminal sends the feedback information according to the feedback manner indicated by the configuration information, so that the terminal can send the feedback information according to the feedback manner configured by the network side. DRAWINGS

1A is a schematic diagram of a single spectrum system in the background art;

1B is a schematic diagram of a spectrum aggregation system in the background art;

2A is a schematic structural diagram of a system for transmitting feedback information according to an embodiment of the present invention;

2B is a schematic diagram of a frequency band resource occupied by a feedback mode according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure;

4 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a first method for sending feedback information according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of a method for sending feedback information according to an embodiment of the present invention. detailed description

In the embodiment of the present invention, the network side determines the configuration information, and sends the configuration information to the terminal; the terminal sends the feedback information according to the feedback manner indicated by the received configuration information. The network side can indicate which feedback mode is used by the terminal that supports the multiple feedback modes to send the feedback information, so that the network side knows which feedback mode the terminal specifically uses to send the feedback information, thereby improving the performance of the network side processing feedback information.

The following describes the PUCCH Format lb with channel selection feedback method and the DFT-S-OFDM feedback method.

The Long Term Evolution-Advanced (LTE-A) system is currently determined to support up to 5 carriers for aggregation.

For a Frequency Division Duplex (FDD) system, the size of the feedback window (that is, multiple downlink carriers and downlink subframes that need to perform ACK/NACK feedback in the same subframe) L = the number of downlink carriers aggregated by the terminal N For the Time Division Duplex (TDD) system, the size of the feedback window is L=N x M, where N is the number of downlink carriers aggregated by the terminal, and M is the number of downlink subframes that are fed back in the same uplink subframe. For different uplink and downlink configurations and uplink subframes, the value of M is different. For details, see Table 1.

Uplink and downlink configuration subframe number

Structure

0 1 2 3 4 5 6 7 8 9

0 - - 6 - 4 - - 6 - 4

1 - - 7, 6 4 - - - 7, 6 4 -

- 8, 7, 6, 4 - - - - 8, 7, - -

2 - 6, 4

- 11, 7, 6 6, 5 5, - - - - -

3 - 4

- 12, 11, 8, 7 7, 6, - - - - - - - 13 , 12 , 11 , 9 , 8 , 7 , - - - - - - -

5 - 6 , 5 , 4

6 - - 7 7 5 - - 7 7 - Table 1 Regulations for uplink feedback for downlink transmission

PUCCH Format lb with channel selection feedback method:

There are M (≤4) ACK/NACK information to be fed back in the system, and each ACK/NACK information corresponds to an available uplink control channel. The system pre-defines a mapping relationship between a multi-bit ACK/NACK information combination state and an uplink control channel and 2-bit transmission information. Suppose M = 2, as shown in Table 2 (M is similar to M = 2, except that the contents of the table are different), which indicates that the i-th ACK/NACK information corresponds to the uplink control channel, W^O) is 2 bits. Feedback information actually transmitted. When the two ACK/NACK information to be fed back by the terminal are ACK information and NACK information, it can be known by looking up the table that 2 bits of information (0, 1) will be transmitted on the uplink control channel ^'G. The network side determines which channel of the two available feedback channels has data, and detects and demodulates the data on the feedback channel to obtain specific feedback information. After checking the table, the 2-bit feedback belonging to the same UE can be obtained. The information corresponds to ACK and NACK, respectively.

Table 2 shows the relationship of feedback mapping when M = 2

DFT-S-OFDM feedback method:

Version 8 (Rel-8) has limited PUCCH bearer capability, and can only transmit up to 4 bits of ACK/NACK information using PUCCH Format lb with channel selection. Therefore, a new DFT-S-OFDM based method is introduced in Rel-10. The PUCCH structure, in order to improve resource utilization, uses Code Division Multiplexing (CDM) in the structure, so that multiple UEs can multiplex and transmit PUCCH on the same physical resource. If you use QuadriPhase Shift Keying (QPSK) modulation and Spreading Factor (SF) = 5, The terminal can transmit up to 48 coded bits on a resource block (RB) pair. This greatly improves the carrying capacity of the PUCCH. When the method is used to transmit multi-bit ACK/NACK information, the terminal will first jointly encode the multi-bit ACK/NACK information to obtain 24 or 48 coded bits, which are modulated, spread, and mapped to physical resources for transmission.

It should be noted that the embodiments of the present invention are not limited to the two feedback modes: the PUCCH Format lb with channel selection feedback method and the DFT-S-OFDM feedback method, and any feedback manner is applicable to the embodiment of the present invention, and as long as multiple feedbacks exist. The system of the mode also applies to the embodiment of the invention.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

As shown in FIG. 2A, the system for transmitting feedback information provided by the embodiment of the present invention includes: a network side device 10 and a terminal 20.

The network side device 10 is configured to determine configuration information, and send configuration information to the terminal 20, where the configuration information indicates a manner of sending the feedback information.

The terminal 20 is configured to receive configuration information from the network side device 10, and send the feedback information according to a feedback manner indicated by the configuration information.

After determining the feedback mode, the terminal 20 receives the downlink data packet from the network side and decodes it, and sends the ACK/NACK information according to the determined feedback manner.

In a specific implementation, the terminal 20 will provide the terminal 20 level and/or capability information to the network side at the beginning of the access system, and the network side device 10 can know whether the terminal 20 supports the terminal 20 according to the terminal 20 level and/or capability information. A variety of feedback methods.

For example, whether the DFT-S-OFDM is supported can be used as a UE capability. When the terminal 20 accesses the system, the network side device 10 reports whether DFT-S-OFDM information is supported. The network side device 10 determines the After the terminal 20 supports DFT-S-OFDM, configuration information can be transmitted to the terminal 20.

The network side device 10 can put the configuration information in the high layer signaling, and send the high layer signaling to the terminal 20. The higher layer signaling may be terminal specific (UE specific) signaling, such as dedicated signaling; or may be cell specific signaling, such as broadcast signaling.

In an implementation, the network side device 10 may determine, in a plurality of manners, which feedback mode is specifically configured for the terminal 20, and the following feedback manner is a PUCCH feedback mode based on DFT-S-OFDM and a PUCCH format lb with channel selection feedback manner. Give an example for explanation.

I. Always use the PUCCH feedback method based on DFT-S-OFDM, that is, the terminal that supports the DFT-S-OFDM based PUCCH feedback mode uses the DFT-S-OFDM based PUCCH regardless of the current network resource status. Feedback method.

2. Determine the feedback mode to be configured according to the number of currently available DFT-S-OFDM-based PUCCH resources and the number of currently available PUCCH format lb with channel selection resources. Such as the current system The PUCCH format lb resource is limited, and a large number of Rel-8 terminals use the PUCCH format lb to feed back ACK/NACK information, so that a Carrier Aggregation (CA) terminal (ie, a terminal supporting the DFT-S-OFDM based PUCCH feedback mode) can be configured. The feedback mode of the PUCCH based on the DFT-S-OFDM is used to feed back the ACK/NACK information. For example, the resource of the current DFT-S-OFDM based PUCCH is limited in the system, and the network side device 10 uses the PUCCH Format lb with the partial CA terminal configuration. The channel selection feedback mode feeds back ACK/NACK information.

It should be noted that the embodiments of the present invention are not limited to the foregoing two solutions, and other solutions that can determine which feedback mode is needed are used in the embodiments of the present invention.

The network side device 10 may use an implicit notification or an explicit notification to indicate which feedback mode the terminal 20 uses. The following is introduced separately.

Explicit notification:

Specifically, the network side device 10 determines the first bit information corresponding to the feedback mode to be configured as the configuration information according to the corresponding relationship between the feedback mode and the first bit information, and then sends the configuration information to the terminal 20; The terminal 20 determines a feedback manner corresponding to the received first bit information according to the correspondence between the feedback mode and the first bit information.

In this mode, the correspondence between the feedback mode and the first bit information can be set in advance. For example, there are two feedback modes, and lbit can be used, that is, "1" corresponds to the first feedback mode, and "0" corresponds to the second feedback mode. . According to the number of feedback methods, the number of bits occupied by the first bit information can also be changed. For example, if there are four feedback modes, 2 bits can be used. The correspondence between the feedback mode and the first bit information can also be updated as needed.

In the implementation, it is required to ensure that the correspondence between the same feedback mode and the first bit information is used between the network side device 10 and the terminal 20. For example, it may be determined by negotiation between the network side device 10 and the terminal 20, and may also be specified in the protocol.

Implicit notification:

The principle of implicit notification is to use other configuration information (that is, information that is not specifically used to configure the feedback mode). For example, the configuration information in the current LTE and LTE-A systems and the configuration information to be added later are added to the configuration information. More meaning, there is no need to tell the terminal 20 which feedback method to use, which can save resources compared to explicit notification. The details will be described below.

The first method is to notify the terminal 20 of the maximum number of bits corresponding to the feedback mode, where the maximum number of bits corresponding to the feedback mode is the maximum number of bits of the feedback information sent by the terminal according to the feedback mode. Since the number of bits of information that can be fed back is different due to different feedback modes, it is only necessary to inform the terminal 20 of the maximum number of bits of the feedback information, and the terminal 20 knows which feedback mode to use.

Specifically, the network side device 10 determines, according to the correspondence between the preset feedback mode and the maximum number of bits, the maximum number of bits corresponding to the feedback mode to be configured as configuration information; correspondingly, the terminal 20 according to the preset feedback mode and the maximum bit The correspondence between the numbers determines the feedback mode corresponding to the maximum number of bits received.

There are many ways to notify the terminal 20 of the maximum number of bits in an implicit manner, such as by configuring the terminal. The manner in which the number of carriers is aggregated implicitly informs the terminal 20 of the maximum number of bits.

The following is an example of a PUCCH feedback method based on DFT-S-OFDM and a PUCCH format lb with channel selection feedback method.

In the corresponding relationship between the feedback mode and the maximum number of bits in the FDD system, the maximum number of bits corresponding to the PUCCH Format lb with channel selection feedback mode may be any one of 1 to 4, or may be a range such as not greater than 4; The maximum number of bits corresponding to the PUCCH feedback mode of the S-OFDM may be any value greater than 5, or may be a range such as greater than 4.

In the FDD system, if the terminal 20 is required to use the PUCCH Format lb with channel selection feedback mode, it is determined that the maximum number of bits is not greater than 4, that is, the configured number of aggregated downlink carriers is not greater than 4. That is, when the configured number of aggregated downlink carriers is not greater than 4, the PUCCH Format lb with channel selection feedback mode is used; otherwise, the PUCCH feedback mode based on DFT-S-OFDM is used. Correspondingly, the terminal 20 uses the number of aggregated downlink carriers as the maximum number of bits, and then knows which feedback mode to use according to the correspondence between the feedback mode and the maximum number of bits.

For example, if the number of configured downlink downlink carriers is 3, if the maximum number of bits in the correspondence between the feedback mode and the maximum number of bits is a range, the terminal 20 checks the feedback mode corresponding to the range of the maximum number of bits to which the 3 belongs, because the PUCCH Format lb with The channel selection feedback method corresponds to a range of not more than 4, so it is determined that the PUCCH Format lb with channel selection feedback mode is used;

If the maximum number of bits in the correspondence between the feedback mode and the maximum number of bits is one value, the corresponding feedback mode of 3 is directly determined.

The TDD (Time Division Duplex) system is similar to the FDD system. The difference is that since the TDD system has multiple uplink and downlink configurations, the maximum number of bits will be different for each uplink and downlink configuration. Since the maximum number of bits is different, the correspondence between the feedback mode and the maximum number of bits for each uplink and downlink configuration is also different.

Specifically, if the terminal 20 requires the use of PUCCH Format lb with channel selection feedback mode, it is determined that the maximum number of bits is greater than either the number of downlink carriers N _l polymerization configured i.e. not greater than Ni. That is, when the number of aggregated downlink carriers is not greater, the terminal 20 uses the PUCCH Format lb with channel selection; otherwise, the terminal 20 uses the DFT-S-OFDM based PUCCH, as shown in Table 3.

Up and down configuration Ni

0 4

1 2

twenty one

3 1

4 1

5 - table 3

In the implementation, it is necessary to ensure that the corresponding feedback mode and the maximum number of bits are used between the network side device 10 and the terminal 20. For example, it may be determined by negotiation between the network side device 10 and the terminal 20, and may also be specified in the protocol.

The second method is to notify the terminal 20 of the PUCCH resource information corresponding to the feedback mode. The PUCCH resources that need to be configured for the terminal 20 are different because of different feedback modes. Therefore, it is only necessary to inform the terminal 20 that the feedback mode corresponds to the PUCCH resource information, and the terminal 20 knows which feedback mode to use.

Specifically, the network side device 10 determines, according to the correspondence between the preset feedback mode and the PUCCH resource information, the PUCCH resource information corresponding to the feedback mode to be configured as the configuration information; correspondingly, the terminal 20 according to the preset feedback mode and the PUCCH resource. Corresponding relationship of the information, determining a feedback manner corresponding to the received PUCCH resource information.

For the PUCCH feedback mode based on DFT-S-OFDM, the network side only needs to configure semi-statically to the terminal 20 1 PUCCH channel resources. Therefore, the number of PUCCH channel resources corresponding to the PUCCH resource information corresponding to the PUCCH of the DFT-S-OFDM is X. That is to say, when the terminal 20 determines the number of PUCCH channel resources = X according to the PUCCH resource information, it is known that the PUCCH feedback mode based on DFT-S-OFDM needs to be used. Correspondingly, when the terminal 20 determines the number of PUCCH channel resources > X according to the PUCCH resource information, it is known that the PUCCH format lb with channel selection feedback mode needs to be used.

For example, when X is 1, when the terminal 20 determines that the number of PUCCH channel resources is 1 according to the PUCCH resource information, the terminal uses the PUCCH feedback mode based on DFT-S-OFDM; and when the terminal 20 determines the number of PUCCH channel resources > 1 according to the PUCCH resource information, The PUCCH format lb with channel selection feedback method is used. Correspondingly, in the correspondence between the feedback mode and the PUCCH resource information, the number of PUCCH channel resources corresponding to the PUCCH resource information corresponding to the PUCCH feedback mode of the DFT-S-OFDM is 1, and the PUCCH resource corresponding to the PUCCH format lb with channel selection feedback mode The number of PUCCH channel resources corresponding to the information is greater than one.

Determined according to the PUCCH resource information corresponding to the PUCCH format lb with channel selection feedback mode

The number of PUCCH channel resources may not be one range but one or more values of specific values greater than one (ie, the same feedback mode may correspond to multiple PUCCH resource information).

For example, the number of PUCCH channel resources is 2, if the correspondence between the feedback mode and the PUCCH resource information is

The number of PUCCH channel resources corresponding to the PUCCH resource information is a range, and the terminal 20 views the feedback mode corresponding to the range of the number of PUCCH channel resources to which the 2nd belongs, and the number of PUCCH channel resources corresponding to the PUCCH Format lb with channel selection feedback mode is greater than 1. , so make sure to use PUCCH

Format lb with channel selection feedback method; If the number of PUCCH channel resources corresponding to the PUCCH resource information in the correspondence between the feedback mode and the PUCCH resource information is a value, the corresponding feedback mode is directly determined.

If it is a specific value, the specific values are slightly different in the FDD system and the TDD system.

When the terminal needs to use the PUCCH Format lb with channel selection feedback mode, the network side device 10 needs to semi-statically allocate 20 MCUCH channel resources to the terminal (the PUCCH resource information can be determined according to the PUCCH channel resources, thereby establishing a correspondence relationship).

For an FDD system, M is the number of aggregated downlink carriers to be configured, and M cannot be equal to 1. For a TDD system, because there are multiple uplink and downlink configurations, the size of M for each uplink and downlink configuration is also different, but M is required to be greater than 1 , See Table 4 for details. Where N ₂ is the configured number of aggregated downlink carriers.

Table 4

In the implementation, it is required to ensure that the correspondence between the same feedback mode and the PUCCH resource information is used between the network side device 10 and the terminal 20. For example, it can be determined by negotiation between the network side device 10 and the terminal 20, and can also be specified in the protocol.

For mode one and mode two, since it is possible for the terminal 20 to perform the combining operation on the feedback information, that is, logically AND operation for each individual ACK/NACK information, the manner of the merge operation includes the air space combination of ACK/NACK (ACK/ NACK spatial bundling), one or more of ACK/NACK component carrier bundling and ACK/NACK time bundling merging, so it is also possible to stipulate in advance which combination mode to use for terminal 20.

For example, when the number of bits occupied by the feedback information to be fed back is greater than the maximum number of feedback bits, the feedback information needs to be combined.

Specifically, the combination mode may be specified in the protocol in advance, and the terminal 20 performs a merge operation on the feedback information according to the pre-configured merge mode;

It is also possible for the network side device 10 to notify the terminal 20 which combination mode to use:

The network side device 10 determines the required terminal according to the correspondence between the preset combination mode and the second bit information. The second bit information corresponding to the merge mode used in the merge operation is used to send the determined second bit information to the terminal; correspondingly, the terminal 20 determines according to the correspondence between the preset merge mode and the second bit information. The merge mode corresponding to the received second bit information, and the merge operation is performed according to the determined merge mode.

The third method is to notify the terminal 20 of the PUCCH band resource attribute information corresponding to the feedback mode, wherein the PUCCH band resource attribute information corresponding to the feedback mode is attribute information of the PUCCH band resource occupied by the terminal when the feedback information is sent according to the feedback mode. Due to different feedback modes, the channel structure is also different, and the PUCCH channel resources are also independent of each other. Therefore, it is only necessary to inform the terminal of the 20 PUCCH band resource attribute, and the terminal 20 knows which feedback mode to use.

Specifically, the network side device 10 determines, according to the correspondence between the preset feedback mode and the PUCCH band resource attribute information, the PUCCH band resource attribute information corresponding to the feedback mode to be configured as the configuration information; correspondingly, the terminal 20 according to the preset feedback. The correspondence between the mode and the PUCCH band resource attribute information, and determining the received

The feedback mode corresponding to the PUCCH band resource attribute information.

For example, the PUCCH channel resource corresponding to the PUCCH feedback mode of the DFT-S-OFDM and the PUCCH format lb with channel selection feedback mode can be seen in FIG. 2B.

It can be seen from FIG. 2B that the PUCCH format lb with channel selection corresponding to the PUCCH channel resource occupies parts A and D, and the PUCCH channel resource corresponding to the DFT-S-OFDM based PUCCH feedback mode occupies B and C. section.

If the terminal 20 is required to use the PUCCH Format lb with channel selection feedback mode, the PUCCH band resource attribute corresponding to the PUCCH band resource of the A or D part may be configured for the terminal 20, and the terminal 20 receives the

After the PUCCH band resource attribute information, the corresponding PUCCH band resource is known, and according to the correspondence between the feedback mode and the PUCCH band resource attribute information, the PUCCH Format lb with channel selection feedback mode is known;

If the terminal 20 is required to use the PUCCH feedback method based on DFT-S-OFDM, the terminal 20 can be configured.

The PUCCH band resource attribute corresponding to the PUCCH band resource of the B or C part, the terminal 20 knows the corresponding PUCCH band resource after receiving the PUCCH band resource attribute information, and then knows according to the correspondence between the feedback mode and the PUCCH band resource attribute information. A PUCCH feedback method based on DFT-S-OFDM is used.

In the implementation, it is required to ensure that the correspondence between the same feedback mode and the PUCCH band resource attribute is used between the network side device 10 and the terminal 20. For example, it can be determined by negotiation between the network side device 10 and the terminal 20, and can also be specified in the protocol.

The network side device in the embodiment of the present invention may be a base station (such as a macro base station, an evolved base station, a home base station, etc.), or an RN (relay) device, or other network side devices. As shown in FIG. 3, the network side device provided by the embodiment of the present invention includes: a configuration information determining module 100 and a sending module 110.

The configuration information determining module 100 is configured to determine configuration information, where the configuration information indicates a manner of sending the feedback information, and the sending module 110 is configured to send the configuration information determined by the configuration information determining module 100 to the terminal, and is used to indicate that the terminal indicates according to the configuration information. The feedback method sends feedback information.

The configuration information determining module 100 may determine, according to the corresponding relationship between the feedback mode and the first bit information, the first bit information corresponding to the feedback mode to be configured as the configuration information.

The configuration information determining module 100 may determine, according to the correspondence between the preset feedback mode and the maximum number of bits, that the maximum number of bits corresponding to the feedback mode to be configured is configuration information, where the maximum number of bits corresponding to the feedback mode is sent by the terminal according to the feedback mode. The maximum number of bits of feedback information.

The configuration information determining module 100 may determine the PUCCH resource information corresponding to the feedback mode to be configured as the configuration information according to the correspondence between the preset feedback mode and the PUCCH resource information.

The configuration information determining module 100 may determine, according to the correspondence between the preset feedback mode and the PUCCH band resource attribute information, the PUCCH band resource attribute information corresponding to the feedback mode to be configured as the configuration information; wherein the PUCCH band resource attribute information corresponding to the feedback mode is The attribute information of the PUCCH band resource occupied by the terminal when the feedback information is sent according to the feedback manner.

The sending module 110 can send configuration information to the terminal through high layer signaling.

The configuration information determining module 100 may always determine that the DFT-S-OFDM based PUCCH feedback mode needs to be configured; or according to the number of currently available DFT-S-OFDM based PUCCH resources and the number of currently available PUCCH format lb with channel selection resources Determine the feedback method you need to configure. The configuration information determined by the configuration information determining module 100 is information indicating a feedback manner that determines the configuration to be configured.

The network side device 10 may further include: a notification module 120.

The notification module 120 is configured to determine second bit information corresponding to the merge mode that is required for the terminal to perform the merge operation on the feedback information according to the preset relationship between the merge mode and the second bit information, and send the determined second bit to the terminal. The bit information is used to instruct the terminal to perform the combining operation on the feedback information by using the merge mode corresponding to the second bit information.

As shown in FIG. 4, the terminal provided by the embodiment of the present invention includes: a receiving module 200 and a feedback module 210.

The receiving module 200 is configured to receive configuration information from the network side, where the configuration information is information generated by the network side indicating a manner of sending the feedback information.

The feedback module 210 is configured to send the feedback information according to the feedback manner indicated by the configuration information received by the receiving module 200. If the configuration information is the first bit information, the feedback module 210 determines a feedback manner corresponding to the first bit information according to the correspondence between the feedback manner and the first bit information.

If the configuration information is the maximum number of bits, the maximum number of bits is the feedback sent by the terminal according to the corresponding feedback manner. The maximum number of bits of the information, the feedback module 210 determines the feedback mode corresponding to the maximum number of bits according to the correspondence between the preset feedback mode and the maximum number of bits;

If the configuration information is the PUCCH resource information, the feedback module 210 determines the feedback mode corresponding to the PUCCH resource information according to the correspondence between the preset feedback mode and the PUCCH resource information.

If the configuration information is the PUCCH band resource attribute information, where the PUCCH band resource attribute information is the attribute information of the PUCCH band resource occupied by the terminal when the terminal sends the feedback information according to the corresponding feedback manner, the feedback module 210 according to the preset feedback mode and the PUCCH band resource. Corresponding relationship of the attribute information, determining a feedback manner corresponding to the PUCCH band resource attribute information.

The terminal in the embodiment of the present invention may further include: a processing module 220.

The processing module 220 is configured to determine, according to a preset relationship between the merge mode and the second bit information, a merge mode corresponding to the received second bit information from the network side, and perform a merge operation on the feedback information according to the determined merge mode. ; or combine the feedback information according to the pre-configured merge method.

As shown in FIG. 5, the method for sending configuration information provided by the embodiment of the present invention includes the following steps:

Step 501: The network side determines configuration information, where the configuration information indicates a manner of sending feedback information.

Step 502: The network side sends configuration information, where the terminal sends the feedback information according to the feedback manner indicated by the configuration information.

In a specific implementation, the terminal will send the terminal level and/or capability information to the network side at the beginning of the access system, and the network side can know whether the terminal supports multiple feedback modes according to the terminal level and/or capability information.

For example, whether DFT-S-OFDM can be supported as a UE capability, whether DFT-S-OFDM information is supported on the network side at the beginning of the terminal access system, and the network side determines that the terminal supports DFT- After S-OFDM, configuration information can be sent to the terminal.

The step 502 may further include:

Step 503: The terminal sends the feedback information according to the feedback manner indicated by the received configuration information.

In step 503, after determining the feedback mode, the terminal receives the downlink data packet from the network side and decodes the downlink data packet, and transmits the ACK/NACK information according to the determined feedback manner.

In step 502, the network side may put the configuration information in the high layer signaling, and send the high layer signaling to the terminal. The higher layer signaling may be terminal specific (UE specific) signaling, such as dedicated signaling; or may be cell specific signaling, such as broadcast signaling.

In the implementation, the network side can determine which feedback mode needs to be configured for the terminal in multiple manners. The following is an example of the PUCCH feedback mode and the PUCCH format lb with channel selection feedback mode of the DFT-S-OFDM. Description.

I. Always use the PUCCH feedback method based on DFT-S-OFDM, that is, the terminal that supports the PUCCH feedback mode based on DFT-S-OFDM is required to use DFT-S-OFDM regardless of the current network resource status. PUCCH feedback method.

2. Determine the feedback mode to be configured according to the number of currently available DFT-S-OFDM-based PUCCH resources and the number of currently available PUCCH format lb with channel selection resources.

The network side may use an implicit notification or an explicit notification to indicate which feedback mode the terminal uses. The following is introduced separately.

Explicit notification:

Specifically, in step 501, the network side determines, according to the correspondence between the preset feedback mode and the first bit information, the first bit information corresponding to the feedback mode to be configured as the configuration information; correspondingly, in step 503, the terminal according to the feedback Corresponding relationship between the mode and the first bit information, determining a feedback manner corresponding to the received first bit information.

In the implementation, it is necessary to ensure that the same feedback mode and the corresponding relationship of the first bit information are used between the network side and the terminal. For example, it can be determined by negotiation between the network side and the terminal, and can also be specified in the agreement.

Implicit notification:

The first method is to notify the terminal of the maximum number of bits corresponding to the feedback mode, where the maximum number of bits corresponding to the feedback mode is the maximum number of bits of the feedback information sent by the terminal according to the feedback mode. Due to different feedback methods, the number of bits of information that can be fed back is different. Therefore, it is only necessary to inform the terminal of the maximum number of bits of the feedback information, and the terminal knows which feedback method to use.

In step 501, the network side determines, according to the correspondence between the preset feedback mode and the maximum number of bits, the maximum number of bits corresponding to the feedback mode to be configured as configuration information. Correspondingly, in step 503, the terminal according to the preset feedback mode and The correspondence between the maximum number of bits determines the feedback mode corresponding to the maximum number of bits received.

There are many ways to notify the terminal of the maximum number of bits in an implicit manner. For example, the maximum number of bits of the terminal can be implicitly notified by configuring the number of downlink aggregated carriers for the terminal.

For details, refer to the content of the method 1 in FIG. 2A, and details are not described herein again.

In the implementation, it is necessary to ensure that the corresponding feedback mode and the maximum number of bits are used between the network side and the terminal. For example, it can be determined by negotiation between the network side and the terminal, and can also be specified in the agreement.

Manner 2: The PUCCH resource information corresponding to the feedback mode of the terminal is notified. The PUCCH resources that need to be configured for the terminal are different because of different feedback modes. Therefore, it is only necessary to inform the terminal of the feedback mode corresponding to the PUCCH resource information, and the terminal knows which feedback mode to use. In step 501, the network side determines, according to the correspondence between the preset feedback mode and the PUCCH resource information, the PUCCH resource information corresponding to the feedback mode to be configured as configuration information. Correspondingly, in step 503, the terminal according to the preset feedback mode and The correspondence between the PUCCH resource information determines the feedback mode corresponding to the received PUCCH resource information.

For details, refer to the content of the second method in FIG. 2A, and details are not described herein again.

In the implementation, it is necessary to ensure that the corresponding feedback mode and the PUCCH resource information are used between the network side and the terminal. For example, it can be determined by negotiation between the network side and the terminal, and can also be specified in the agreement.

For mode one and mode two, since it is possible for the terminal to perform the combining operation on the feedback information, that is, logically AND operation for each individual ACK/NACK information, since the manner of the merge operation includes airspace merging of ACK/NACK, frequency domain merging One or more of the mergers with the time domain, so it is also possible to agree in advance which combination method to use for the terminal.

Specifically, the merging mode may be specified in the protocol in advance, and in step 503, the terminal performs the merging operation on the feedback information according to the pre-configured merge mode;

It is also possible for the network side to notify the terminal which combination method to use:

The network side determines the second bit information corresponding to the merge mode used by the terminal when the merge operation is performed, and sends the determined second bit information to the terminal according to the corresponding relationship between the merge mode and the second bit information. In step 503, the terminal determines the merge mode corresponding to the received second bit information according to the preset relationship between the merge mode and the second bit information, and performs a merge operation on the feedback information according to the determined merge mode.

Manner 3: The PUCCH band resource attribute information corresponding to the feedback mode of the terminal is notified, wherein the PUCCH band resource attribute information corresponding to the feedback mode is the attribute information of the PUCCH band resource occupied by the terminal when the feedback information is sent according to the feedback mode. Due to different feedback modes, the channel structure is also different, and the PUCCH channel resources are independent of each other. Therefore, it is only necessary to inform the terminal of the PUCCH band resource attribute, and the terminal knows which feedback mode to use.

In step 501, the network side determines the PUCCH band resource attribute information corresponding to the feedback mode to be configured as the configuration information according to the correspondence between the preset feedback mode and the PUCCH band resource attribute information. Correspondingly, in step 503, the terminal sets according to the preset. The corresponding relationship between the feedback mode and the PUCCH band resource attribute information determines the feedback mode corresponding to the received PUCCH band resource attribute information.

For details, refer to the content of the third method in FIG. 2A, and details are not described herein again.

In the implementation, it is necessary to ensure that the correspondence between the same feedback mode and the PUCCH band resource attribute is used between the network side and the terminal. For example, it can be determined by negotiation between the network side and the terminal, and can also be specified in the agreement.

As shown in FIG. 6, the method for sending feedback information provided by the embodiment of the present invention includes the following steps:

Step 601: The terminal receives configuration information from the network side, where the configuration information is sent by the network side. Information on the way information is fed back.

Step 602: The terminal sends the feedback information according to the feedback manner indicated by the configuration information.

If the configuration information is the first bit information, in step 602, the terminal terminal determines the feedback mode corresponding to the first bit information according to the correspondence between the preset feedback mode and the first bit information;

If the configuration information is the maximum number of bits, where the maximum number of bits is the maximum number of bits of the feedback information sent by the terminal according to the corresponding feedback manner, in step 602, the terminal determines the maximum bit according to the correspondence between the preset feedback mode and the maximum number of bits. Number of corresponding feedback methods;

If the configuration information is the PUCCH resource information, in step 602, the terminal determines the feedback mode corresponding to the PUCCH resource information according to the correspondence between the preset feedback mode and the PUCCH resource information.

If the configuration information is the PUCCH band resource attribute information, where the PUCCH band resource attribute information is the attribute information of the PUCCH band resource that is occupied by the terminal when the feedback information is sent according to the corresponding feedback manner, in step 602, the terminal according to the preset feedback mode and The correspondence between the PUCCH band resource attribute information determines a feedback mode corresponding to the PUCCH band resource attribute information.

Before the terminal sends feedback information, it also includes:

The terminal determines the merge mode corresponding to the received second bit information from the network side according to the preset relationship between the merge mode and the second bit information, and performs the merge operation on the feedback information according to the determined merge mode; or the terminal according to the advance The merge mode of the configuration merges the feedback information.

For the specific process of determining the feedback mode and the merging operation, the terminal in FIG. 6 can refer to the content of the feedback mode and the merging operation in the terminal in FIG. 5, and details are not described herein again.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory include instructions. The manufacturing device, the instruction device implements the functions specified in one or more blocks of a flow or a flow and/or a block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

As shown in the foregoing embodiment, the network side determines configuration information, and sends configuration information to the terminal, where the configuration information indicates a manner for sending feedback information; the terminal sends the feedback manner according to the received configuration information. Feedback. The network side can indicate which feedback mode is used by the terminal that supports multiple feedback modes to send feedback information, so that the network side knows which feedback mode the terminal specifically uses to send feedback information, thereby improving the performance of the network side processing feedback information.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

A method for transmitting feedback information, the method comprising:

The method of claim 1, wherein the determining, by the network side, the configuration information comprises: the network side determining, according to a corresponding relationship between the feedback mode and the first bit information, the feedback mode that needs to be configured The first bit information is configuration information.

The method according to claim 1, wherein the determining, by the network side, the configuration information comprises: determining, by the network side, a corresponding feedback manner and a maximum number of bits, determining a feedback manner that needs to be configured The maximum number of bits is configuration information;

The maximum number of bits corresponding to the feedback mode is the maximum number of bits of feedback information sent by the terminal according to the feedback mode.

The method according to claim 1, wherein the determining, by the network side, the configuration information comprises: determining, by the network side, that the network side needs to be configured according to a correspondence between a preset feedback manner and a physical uplink control channel PUCCH resource information. The PUCCH resource information corresponding to the feedback mode is configuration information.

The method according to claim 1, wherein the determining, by the network side, the configuration information comprises: determining, by the network side, a feedback manner that needs to be configured according to a correspondence between a preset feedback manner and a PUCCH frequency band resource attribute information. Corresponding PUCCH band resource attribute information is configuration information;

The PUCCH band resource attribute information corresponding to the feedback mode is attribute information of a PUCCH band resource occupied by the terminal when transmitting feedback information according to the feedback mode.

The method according to any one of claims 1 to 5, wherein the sending, by the network side, the configuration information to the terminal comprises:

The network side sends configuration information to the terminal by using high layer signaling.

The method according to any one of claims 1 to 5, wherein before the determining the configuration information by the network side, the method further includes:

Determining, by the network side, a PUCCH feedback manner of a physical uplink control channel DFT-S-OFDM based on discrete Fourier transform extension OFDM; or, the network side is based on currently available DFT-S-OFDM based The number of PUCCH resources and the number of currently available PUCCH format lb with channel selection resources using the physical uplink control channel format lb determine the configured feedback mode;

The determining, by the network side, the configuration information includes:

The network side determines configuration information indicating a feedback manner of the configuration.

The method according to any one of claims 1 to 5, further comprising:

Determining, by the network side, the second bit information corresponding to the merge mode that is required when the terminal performs the merge operation on the feedback information according to the correspondence between the pre-set merge mode and the second bit information;

And transmitting, by the network side terminal, the determined second bit information, to instruct the terminal to perform a combining operation on the feedback information by using a merge mode corresponding to the second bit information.

9. A method of transmitting feedback information, the method comprising:

Receiving, by the terminal, configuration information from the network side, where the configuration information is information generated by the network side indicating a manner of sending the feedback information;

10. The method according to claim 9, wherein the terminal determines a feedback manner of the configuration information indication according to the following steps:

If the configuration information is the first bit information, the terminal determines a feedback manner corresponding to the first bit information according to a correspondence between a preset feedback manner and the first bit information; or

If the configuration information is the maximum number of bits, the terminal determines the feedback mode corresponding to the maximum number of bits according to the correspondence between the preset feedback mode and the maximum number of bits, where the maximum number of bits is the corresponding feedback mode of the terminal. Maximum number of bits of feedback sent: or

If the configuration information is PUCCH resource information, the terminal determines a feedback manner corresponding to the PUCCH resource information according to a correspondence between a preset feedback manner and a physical uplink control channel PUCCH resource information; or if the configuration information is a PUCCH band resource attribute. The information, the terminal determines the feedback mode corresponding to the PUCCH band resource attribute information according to the correspondence between the preset feedback mode and the PUCCH band resource attribute information, where the PUCCH band resource attribute information is the terminal according to the corresponding feedback mode. Attribute information of the PUCCH band resource occupied when the feedback information is sent.

The method according to claim 9 or 10, wherein before the sending of the feedback information by the terminal, the method further comprises: the terminal is located in a preset relationship between the merge mode and the second bit information, and determines the received The merge mode corresponding to the second bit information from the network side, and the merge information is combined according to the determined merge mode; or the terminal performs the merge operation on the feedback information according to the pre-configured merge mode.

12. A network side device, where the network side device includes:

The configuration information determining module is configured to determine configuration information, where the configuration information indicates a manner of sending the feedback information, and the sending module is configured to send the configuration information to the terminal, where the terminal is configured to send the feedback information according to the feedback manner indicated by the configuration information.

The network side device according to claim 12, wherein the configuration information determining module is specifically configured to:

Determining the corresponding feedback mode according to the corresponding relationship between the feedback mode and the first bit information The first bit information is configuration information.

Determining, according to the correspondence between the preset feedback mode and the maximum number of bits, the maximum number of bits corresponding to the feedback mode to be configured is configuration information;

The PUCCH resource information corresponding to the feedback mode to be configured is determined as the configuration information according to the correspondence between the preset feedback mode and the physical uplink control channel PUCCH resource information.

Determining the PUCCH band resource attribute information corresponding to the feedback mode to be configured as the configuration information according to the correspondence between the preset feedback mode and the PUCCH band resource attribute information;

The network side device according to any one of claims 12 to 16, wherein the sending module is specifically configured to:

The configuration information is sent to the terminal through high layer signaling.

The network side device according to any one of claims 12 to 16, wherein the configuration information determining module is further configured to:

Determining a PUCCH feedback manner of configuring a physical uplink control channel DFT-S-OFDM based on discrete Fourier transform extension OFDM; or, according to the currently available DFT-S-OFDM based PUCCH resources and currently available Determining the configured feedback mode by using the PUCCH format lb format channel to select the number of PUCCH format lb with channel selection resources;

Determine the configuration information indicating the feedback mode of the configuration.

The network side device according to any one of claims 12 to 16, wherein the network side device further includes:

a notification module, configured to determine, according to a preset relationship between the merge mode and the second bit information, the second bit information corresponding to the merge mode used by the terminal to perform the merge operation on the feedback information, and send the determined second bit to the terminal The information is used to instruct the terminal to perform a merge operation on the feedback information by using a merge mode corresponding to the second bit information.

20. A terminal, wherein the terminal comprises:

a receiving module, configured to receive configuration information from the network side, where the configuration information is information generated by the network side indicating a manner of sending the feedback information;

The terminal according to claim 20, wherein the feedback module is specifically configured to:

If the configuration information is the first bit information, determining a feedback manner corresponding to the first bit information according to a correspondence between the preset feedback manner and the first bit information; or

If the configuration information is the maximum number of bits, the feedback mode corresponding to the maximum number of bits is determined according to the correspondence between the preset feedback mode and the maximum number of bits, where the maximum number of bits is the feedback sent by the terminal according to the corresponding feedback manner. The maximum number of bits of information, the terminal determines the feedback mode according to the following steps: or

If the configuration information is the PUCCH resource information, determining a feedback manner corresponding to the PUCCH resource information according to a correspondence between the preset feedback mode and the physical uplink control channel PUCCH resource information; or

If the configuration information is the PUCCH band resource attribute information, the feedback mode corresponding to the PUCCH band resource attribute information is determined according to the correspondence between the preset feedback mode and the PUCCH band resource attribute information, where the PUCCH band resource attribute information is the terminal. The attribute information of the PUCCH band resource occupied when the feedback information is sent according to the corresponding feedback manner.

The terminal according to claim 20 or 21, wherein the terminal further comprises:

a processing module, configured to determine, according to a preset relationship between the merge mode and the second bit information, a merge mode corresponding to the received second bit information from the network side, and perform a merge operation on the feedback information according to the determined merge mode; Or combine the feedback information according to the pre-configured merge method.

23. A system for transmitting feedback information, the system comprising:

The system according to claim 23, wherein the network side device is specifically configured to: determine, according to a correspondence between a preset feedback manner and the first bit information, the first bit corresponding to the feedback mode to be configured Information is configuration information;

The terminal is specifically configured to:

And determining, according to a correspondence between the preset feedback manner and the first bit information, a feedback manner corresponding to the first bit information.

The system according to claim 23, wherein the network side device is specifically configured to: determine, according to a correspondence between a preset feedback mode and a maximum number of bits, that the maximum number of bits corresponding to the feedback mode to be configured is The configuration information, where the maximum number of bits corresponding to the feedback mode is the maximum number of bits of feedback information sent by the terminal according to the feedback manner; The terminal is specifically configured to:

The feedback mode corresponding to the maximum number of bits is determined according to a correspondence between a preset feedback manner and a maximum number of bits.

The system according to claim 23, wherein the network side device is specifically configured to: determine, according to a correspondence between a preset feedback manner and a physical uplink control channel PUCCH resource information, a feedback manner that needs to be configured The PUCCH resource information is configuration information.

The terminal is specifically configured to:

The feedback manner corresponding to the PUCCH resource information is determined according to the correspondence between the preset feedback mode and the PUCCH resource information.

The system according to claim 23, wherein the network side device is specifically configured to: determine, according to a correspondence between a preset feedback manner and a PUCCH frequency band resource attribute information, a PUCCH frequency band corresponding to a feedback mode to be configured. The resource attribute information is configuration information, where the PUCCH band resource attribute information corresponding to the feedback mode is attribute information of a PUCCH band resource occupied by the terminal when the feedback information is sent according to the feedback manner;

The terminal is specifically configured to:

The feedback mode corresponding to the PUCCH band resource attribute is determined according to a correspondence between a preset feedback mode and a PUCCH band resource attribute.