JP2018085763A - Wireless communication method for supporting harq, user device, and base station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless communication method for supporting a hybrid automatic retransmission request.SOLUTION: A wireless communication method includes: a step of transmitting first hybrid automatic retransmission request HARQ process amount instruction information to a user device UE; a step of determining a second HARQ process amount according to second HARQ process amount instruction information when the second HARQ process amount instruction information is further transmitted to the UE; and a step of executing data transmission with the UE according to the determined second HARQ process amount. A base station and the user device can execute data communication with the UE on the basis of different HARQ timing relationship and the HARQ process amount, and thus, they can more properly support the UE that adopts a different functional characteristic.SELECTED DRAWING: Figure 1

Description

  The present invention relates to the field of wireless communication, and more particularly, to a wireless communication method, a user apparatus, and a base station that support Hybrid Automatic Repeat request (HARQ).

Third Generation Partnership Project ^{(3 rd Generation Partnership Project, 3GPP} ) long term evolution (Long Term Evolution, LTE) time division duplex (Time Division Duplex, TDD) in a system, the wireless frame has a length of 10 ms, 10 Including subframes. Each subframe has a length of 1 ms. The network side device may configure the subframe to transmit downlink data or uplink data. The LTE TDD system supports various uplink and downlink subframe configurations as described in Table 1 (Table 1), where D represents the downlink subframe and S is a special U represents a subframe, and U represents an uplink subframe. For example, the subframe configuration 0 is “DSUUUDSUUU”. The network-side device notifies the user apparatus of the subframe configuration to be used through a broadcasted first system information block (System Information Block 1, SIB1) message.

The LTE TDD system supports physical layer HARQ technology. The corresponding HARQ timing relationship and the maximum number of supported HARQ processes are defined for each subframe configuration in Table 1 (Table 1). Table 2 (Table 2) is supported in the LTE TDD subframe structure of each describes the maximum number _{M UL_HARQ} the maximum number _{M DL_HARQ} and uplink HARQ process of the downlink HARQ process, wherein the downlink HARQ Process and uplink HARQ process refer to HARQ process used for downlink data transmission and HARQ process used for uplink data transmission, respectively. The HARQ process for uplink data transmission supports two modes, which are called normal HARQ mode and subframe combined mode, respectively, and N / A is the subframe configuration to which the subframe combined mode corresponds. Indicates that it is not supported. In normal HARQ mode, one transmission of the uplink data packet is performed in only one subframe, and in subframe combination mode, one transmission of the uplink data packet is performed in two or more subframes. Each frame transmits a different redundant version of the uplink data packet.

  In communication technology development, aggregation of TDD carriers having different subframe configurations, aggregation of frequency division duplex (FDD) carriers and TDD carriers, and dynamic reconfiguration of TDD subframe configurations, and more The introduction of advanced functional features is discussed. Currently, there are multiple subframe configurations, and prior art carrier aggregation is implemented only for carriers with the same subframe configuration, so to better support new functional features, user equipment ( The HARQ timing relationship used during communication between the UE) and the base station is not likely to be a HARQ timing relationship corresponding to the subframe configuration notified through SIB1 on the carrier. Moreover, if the HARQ timing relationship used is not the HARQ timing relationship defined by the subframe configuration advertised through SIB1, the base station and UE will have an inconsistent understanding of the maximum number of supported HARQ processes. This can cause errors in the soft buffer size division and further communication errors.

Pantech, PUSCH HARQ / scheduling timing in inter-band CA with different TDD UL-DL configuration, 3GPP TSG-RAN WG1 Meeting # 68bis R1-121357, [online], March 20, 2012, p1-p5, [search date 2016.01.07], URL, http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_68b/Docs/R1-121357.zip NTT DOCOMO, PDCCH Enhancement for Different TDD UL-DL Configuration on Different Bands, 3GPP TSG-RAN WG1 Meeting # 68 R1-120670, [online], February 3, 2012, p1-p5, [search date 2016.01.07] , URL, http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_68/Docs/R1-120670.zip

The present invention provides a wireless communication method supporting HARQ, user equipment and a base station.
One aspect of the present invention provides a wireless communication method that supports hybrid automatic repeat request, the method comprising:
Transmitting the first hybrid automatic repeat request HARQ process amount instruction information to the user apparatus UE;
When the second HARQ process amount indication information is further transmitted to the UE, the second HARQ process amount indication information is determined according to the second HARQ process amount indication information, and the UE and the UE according to the determined second HARQ process amount. Performing data transmission.

Another aspect of the present invention provides a wireless communication method that supports hybrid automatic repeat request, the method comprising:
Receiving first hybrid automatic repeat request HARQ process amount indication information transmitted by a base station;
When the second HARQ process amount indication information transmitted by the base station is further received, the second HARQ process amount is determined according to the second HARQ process amount indication information, and the determined second HARQ process amount is determined. Performing data transmission with the base station based on

Another aspect of the invention provides a base station, which comprises:
A transmission module configured to transmit first hybrid automatic repeat request HARQ process amount indication information to the user equipment UE;
When the transmission module further transmits second HARQ process amount indication information to the UE, the second HARQ process amount is determined according to the second HARQ process amount indication information, and is transmitted according to the determined second HARQ process amount. And a processing module configured to perform data transmission with the UE through the module.

Another aspect of the present invention provides a user device, the user device comprising:
A receiving module configured to receive first hybrid automatic repeat request HARQ process amount indication information transmitted by the base station;
When the receiving module further receives the second HARQ process amount indication information transmitted by the base station, the second HARQ process amount is determined according to the second HARQ process amount indication information, and the determined second HARQ is determined. And a processing module configured to perform data transmission with the base station through the receiving module based on the process quantity.

  In the present invention, by transmitting the second HARQ process amount indication information to the UE, the base station and the user equipment can perform data communication with the UE based on different HARQ timing relationship and HARQ process amount, This makes it possible to better support UEs that employ different functional features.

  To describe the technical solutions in the embodiments of the present invention more clearly, the following introduces the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description show only some embodiments of the present invention, and those skilled in the art can further derive other drawings according to these accompanying drawings.

2 is a flowchart of a wireless communication method supporting HARQ according to an embodiment of the present invention; FIG. 4 is a schematic diagram of a method for performing dynamic reconfiguration of TDD subframe configuration by setting dynamic subframes. FIG. 2 is a schematic diagram of a method for performing dynamic reconfiguration of TDD subframe configuration by notifying dynamic subframe configuration through system messages. FIG. 4 is a schematic diagram of aggregation of TDD carriers having different subframe configurations according to an embodiment of the present invention. FIG. 3 is a schematic diagram of aggregation of FDD carrier and TDD carrier according to an embodiment of the present invention. FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention; 6 is a flowchart of a wireless communication method supporting HARQ according to another embodiment of the present invention; FIG. 3 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

  To make the objectives, technical solutions and advantages of the embodiments of the present invention more comprehensible, the technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings of the embodiments of the present invention. Explain the law clearly and completely. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

  Embodiments of the present invention have one or more advanced functional features such as aggregation of TDD carriers with different subframe configurations, aggregation of FDD carriers and TDD carriers, and dynamic reconfiguration of TDD subframe configurations. After being introduced, when the HARQ timing relationship used during the communication between the UE and the base station is not the HARQ timing relationship corresponding to the subframe configuration notified through SIB1 on the carrier, Provided is a wireless communication method that supports HARQ, user equipment and base stations to solve the problem of how to implement that support for performing communication is still well provided to the UE. The advanced functional features described in the embodiments of the present invention are one of TDD carrier aggregation with different subframe configurations, FDD carrier and TDD carrier aggregation, and dynamic reconfiguration of TDD subframe configurations. Contains one or more.

  An embodiment of the present invention provides a wireless communication method supporting HARQ as shown in FIG. 1, which method includes the following steps.

  Step 101: Send first HARQ process amount indication information to a UE.

  In this step, the first HARQ process quantity indication information is used to perform data communication with UEs that do not employ advanced functional features.

  In the LTE system, the first HARQ process amount indication information is subframe configuration information carried in the first system information block message. The base station can perform data communication with UEs that do not employ advanced functional features by using the subframe configuration in the first system information block message. In the LTE TDD system, the network side uses any of the seven types of subframe configurations described in Table 1 (Table 1) through the first system information block broadcast by the system. The user apparatus is notified of whether the frame structure is used. For each type of subframe configuration described in Table 1 (Table 1), the protocol defines strict HARQ timing relationships (HARQ timing) and corresponding HARQ process quantities. During implementation, the HARQ timing relationship and HARQ process amount corresponding to each type of subframe configuration may be stored in the base station and the UE in advance, so after obtaining the first HARQ process amount indication information, the UE The first HARQ process amount corresponding to the first HARQ process amount indication information can be determined.

  When the first HARQ process amount indication information is transmitted to the UE, the first HARQ process amount indication information may be transmitted to all UEs. For example, in an LTE TDD system, first HARQ process quantity indication information may be indicated through subframe configuration information, and the subframe configuration information is transmitted by the base station through a first system information block message that is broadcast to all UEs. May be sent to. For example, the first HARQ process quantity indication information may not be transmitted to all UEs unless it is an LTE TDD system.

  Step 102: When the second HARQ process amount indication information is further transmitted to the UE, determine the second HARQ process amount according to the second HARQ process amount indication information, and according to the determined second HARQ process amount Perform data transmission with the UE.

  In this step, the second HARQ process quantity indication information is used for the UE to determine the HARQ process quantity used when the base station performs data communication with the UE.

  In addition, this embodiment further determines the first HARQ process amount according to the first HARQ process amount indication information when the second HARQ process amount indication information is not transmitted to the UE, and determines the determined first Performing data transmission with the UE according to the HARQ process amount may be included.

  In this step, since the second HARQ process amount indication information is mainly transmitted to the UE that adopts the advanced functional feature, the UE that adopts the advanced functional feature receives the second HARQ process amount indication information. The response message can be fed back to the base station according to the second HARQ timing relationship indicated by.

  For UEs that adopt advanced functional features, the base station sets corresponding second HARQ process quantity indication information according to the advanced functional features adopted by the UE. For example, when the base station configures aggregation of TDD carriers with different subframe configurations for the UE for downlink data transmission performed on the secondary component carrier, the corresponding uplink response information is When fed back on the main component carrier, the subframe configuration of the main component carrier and the secondary component carrier is configured so that UEs adopting advanced functional features can perform data transmission according to the appropriate HARQ process amount. Considering comprehensively, it is required to set appropriate second HARQ process amount indication information. In another example, when the base station enables the dynamic reconfiguration function of the TDD subframe configuration for the UE, the base station can communicate with the UE by using subframe configuration X. Here, the subframe configuration X is variable in different wireless frames. For example, subframe configuration X may vary among subframe configurations 0-6 described in Table 1 (Table 1) according to service requirements, and for some wireless frames, subframe configuration X may further be It may be the same as the subframe configuration in the first system information block message. At this time, the base station needs to set appropriate second HARQ process amount indication information in consideration of all possible changes in the subframe configuration X.

  In this step, the second HARQ process quantity indication information may be notified to at least one UE through dedicated signaling or special system messages. Dedicated signaling may include one or more of radio resource control messages, medium access control messages, physical layer control signaling, and the like. For example, a UE that adopts advanced functional features may be notified through a radio resource control message, in which case, after transmitting the second HARQ process amount indication information to the UE through dedicated signaling, the base station transmits A response message is received that is fed back by the UE in order to determine whether the has succeeded. If the base station successfully transmits the second HARQ process amount indication information to the UE, the base station performs data transmission with the UE according to the second HARQ process amount, and the base station performs the second HARQ process amount. If the base station does not succeed in transmitting the amount indication information to the UE, the base station determines the first HARQ process amount according to the first HARQ process amount indication information, and determines the first HARQ process amount with the UE according to the determined first HARQ process amount. Execute data transmission. Special system messages may be additional system messages used for notification and may be broadcast to certain types of UEs, for example UEs that adopt advanced functional features or evolved UEs. UEs other than can not receive or determine the second HARQ process amount indication information.

  According to different application scenarios, the second HARQ process quantity indication information may have a different special design, and further below, through some applications, the special design of the second HARQ process quantity indication information. Will be explained. The UE that receives the second HARQ process amount indication information can determine the second HARQ process amount according to the received second HARQ process amount indication information, and therefore can perform data transmission according to an appropriate HARQ process amount. Is possible.

  The LTE system is a constantly evolving system, and a base station that supports advanced functional features should also be able to provide services for UEs that support only the initial version of the functional features, An evolved UE that supports advanced functional features also accesses a base station that supports only the initial version of the functional feature and performs communication with the base station by using the initial version of the functional feature. Need to be possible. In order to implement that the evolved base station can further provide services for UEs that only support the initial version of the functional features, preferably when the base station performs data communication with the UE, For a UE for which the base station has not successfully transmitted the second HARQ process amount indication information, the base station determines the UE and the UE based on the first HARQ process amount indication indicated by the first HARQ process amount indication information. Execute data transmission. In this way, after the non-evolutionary UE accesses the evolved base station, the evolved base station provides basic LTE communication services for the non-evolutionary UE by using the initial version functional features. After an evolved UE accesses a base station, the base station transmits only the first HARQ process amount indication information to the evolved UE regardless of whether the base station is an evolved base station If the second HARQ process amount indication information is not successfully transmitted, the base station can provide basic LTE communication services for the evolved UE by using the functional features of the initial version. .

When the second HARQ process amount indication information is transmitted, the base station performs data transmission with the UE based on the second HARQ process amount indicated according to the second HARQ process amount indication information, If the HARQ process amount indication information is not transmitted, the base station performs data transmission with the UE based on the first HARQ process amount indicated according to the first HARQ process amount indication information. Here, the first HARQ process variable and a second HARQ process variable may be a maximum number _{M DL_HARQ} downlink HARQ process, may be the maximum number _{M UL_HARQ} uplink HARQ process.

In addition, the LTE TDD system defines the total number of soft channel bits N _soft supported by each UE capability level according to the capability levels of different UEs. N _soft gives the size of the largest soft buffer supported by the UE, and the largest soft buffer is further divided and then allocated to each HARQ process. Since the size of the soft buffer allocated to a transmission block is indicated as N _IR bits,

It is.

In Equation (1), K _MIMO is the maximum number of transmission blocks supported by the Physical Downlink Shared Channel (PDSCH) transmission mode configured for the UE, and a value of 1 or 2 Where K _C is the maximum number of bundled carriers supported by the UE capability level, has a value of 1, 2, or 5 and M _limit is a constant with a value of 8. In a subframe, the number of transmission blocks included in the HARQ process does not exceed K _MIMO . From equation (1), soft buffer size partitioning may be related to the maximum number of downlink HARQ processes M _{DL_HARQ} supported by each subframe configuration, and the value of M _{DL_HARQ} is reported in SIB1 It can be understood that it is obtained by the UE according to the subframe configuration.

In an embodiment of the present invention, when performing data transmission with the UE, the base station further performs correct soft buffer size division according to an appropriate M _{DL_HARQ} determined according to the second HARQ process amount indication information. For example, the size of the downlink HARQ soft buffer is calculated by replacing the appropriate M _{DL_HARQ} determined according to the second HARQ process amount indication information of Equation (1).

Further, when the base station determines the second HARQ process amount according to the second HARQ process amount indication information, before the base station performs data transmission with the UE, the method further includes:
The method includes transmitting downlink control information (DCI) to the UE, and the number of HARQ processes carried in the HARQ process number field in the DCI is equal to or less than the second HARQ process amount.

  In an embodiment of the present invention, by transmitting the second HARQ process amount indication information to the UE, the base station can perform data communication with the UE based on different HARQ timing relationship and HARQ process amount, This makes it possible to better support different versions of UEs. Specifically, by one or more advanced functional features such as dynamic reconfiguration of TDD subframe configurations, aggregation of TDD carriers with different subframe configurations, and aggregation of FDD and TDD carriers In the configured UE, the UE can perform data communication with the base station based on the HARQ timing relationship different from the HARQ timing relationship corresponding to the subframe configuration notified through the SIB1 message on the carrier.

  In the following, some illustrative examples of the second HARQ process quantity indication information are given by using the LTE system as an example.

  The LTE system is a constantly evolving and evolving system that includes two systems, including FDD and TDD, and in the initial version, TDD subframe configuration changes can only be completed through the system message update process, Complete in 640ms at the fastest. However, changes in the subframe configuration usually cause service interruption for a period of time. In order to reduce the impact caused by service interruption as much as possible, changes in subframe configuration are generally rare in real systems and the subframe configuration remains unchanged even after the network deployment is complete. It is. Considering the rapidity of uplink and downlink services, when the number of users is small, the subframe configuration can change frequently and quickly to better fit the current service traffic characteristics There is a need. Currently, the LTE protocol proposes support for changing the TDD subframe configuration more dynamically according to current service characteristics, where the subframe configuration is often every few hundred milliseconds or even shorter. It may need to be changed every millisecond, which is called dynamic reconfiguration of the TDD subframe configuration.

  A method for performing dynamic reconfiguration of a TDD subframe configuration is as follows. In each wireless frame, a base station uses a part of the subframe as a dynamic subframe (Flexible Sub-frame or Dynamic Sub-frame). To notify the UE which subframe is set as a dynamic subframe. At each transmission instant, according to the user equipment uplink and downlink service requirements, the dynamic subframe may be used dynamically by the base station for transmission of uplink or downlink data. . As shown in FIG. 2, the base station notifies the UE of subframe configuration 1 through SIB1. In addition, the base station further determines that subframe 3, subframe 4, subframe 8, and subframe 9 are set as dynamic subframes through a radio resource control (RRC) message. Where D represents a downlink subframe, S represents a special subframe, U represents an uplink subframe, and F represents a dynamic subframe. For dynamic subframes, the base station may explicitly indicate whether each dynamic subframe is used for uplink data transmission or downlink data transmission through signaling, eg, physical layer signaling. Or implied.

  Another method for implementing dynamic reconfiguration of TDD subframe configuration is to determine when each subframe of each wireless frame is used for uplink data transmission and when it is used for downlink data transmission. As will be understood, the base station further introduces new signaling other than the subframe configuration notified through the SIB1, and notifies the UE of the subframe configuration X actually used and its valid time. It is. As explained above, the subframe configuration notified through SIB1 requires at least 640ms to change, and through the actually used subframe configuration X notified by the new signaling introduced, The base station can perform quick subframe configuration changes without updating system messages in order to perform dynamic reconfiguration of TDD subframes, which allows UE uplink service and downlink Better fit with link service requirements. That is, the subframe configuration X is set according to the requirements of the user's uplink service and downlink service, and the base station performs communication with the UE by using the subframe configuration X, thereby transmitting the service. Implement more efficiently. For example, as shown in FIG. 3, the subframe configuration notified through the SIB1 message is the subframe configuration 1, and the base station further transmits the subframe configuration X actually used and its valid time through the RRC message. Where the subframe configuration X actually used when the base station performs communication with the UE in different periods according to the user's service requirements is subframe configuration 0, 2, 1, respectively. , And 4.

  A UE that supports carrier aggregation technology can simultaneously access two or more component carriers (Component Carrier) and perform data communication with a base station. It is called a main component carrier, another component carrier is called a secondary component carrier, and the component carrier is also commonly called a serving cell. LTE version 10 supports aggregation of only TDD carriers having the same subframe configuration, but does not support aggregation of TDD carriers having different subframe configurations, or aggregation of FDD carriers and TDD carriers. LTE version 11 proposes support for aggregation of TDD carriers with different subframe configurations, as shown in FIG. 4, and the subsequent evolved version further includes FDD carrier and TDD carrier as shown in FIG. In addition, in a carrier aggregation situation, each TDD carrier can employ a technique of dynamic reconfiguration of TDD subframe configuration.

  In the situation of carrier aggregation, for example, in aggregation of TDD carriers having different subframe configurations or aggregation of FDD carrier and TDD carrier, first HARQ process amount indication information is transmitted to the UE for at least one component carrier. In particular, the step includes the step of transmitting first HARQ process amount indication information regarding the component carrier to the UE, and if the transmission of the second HARQ process amount indication information to the UE is successful, Is second HARQ process quantity indication information for at least one component carrier, which may be supported when the base station performs data communication with the UE on the at least one component carrier To determine the RQ process variables are used by the UE. Furthermore, the at least one component carrier is a component carrier that enables a dynamic reconfiguration function of the TDD subframe configuration, or a secondary component carrier having a subframe configuration different from the main component carrier. obtain. Note that the FDD carrier and the TDD carrier are also carriers that employ different subframe configurations.

  In addition, the base station can perform communication with the UE by using multiple component carriers at the same time, where the multiple component carriers include the primary component carrier and the rest are secondary component carriers. Here, the one or more secondary component carriers may have a different subframe configuration than the primary component carrier, and the function of dynamic reconfiguration of the TDD subframe configuration further includes at least one It can be activated on one component carrier. In a secondary component carrier having a subframe configuration different from that of the main component carrier and / or a component carrier that enables the dynamic reconfiguration function of the TDD subframe configuration, the base station can receive each component carrier. The first HARQ process amount indication information related to the component carrier and the second HARQ process amount indication information related to the component carrier can be transmitted, and the same second HARQ process amount indication information for all the component carriers is notified You can also

  The second HARQ process amount indication information includes a second HARQ process amount. At this time, the step of determining the second HARQ process amount in accordance with the second HARQ process amount instruction information includes using the second HARQ process amount included in the second HARQ process amount instruction information as the second HARQ process amount. Determining.

  The second HARQ process amount indication information may include subframe configuration information. At this time, the step of determining the second HARQ process amount according to the second HARQ process amount instruction information determines the second HARQ process amount according to the subframe configuration information included in the second HARQ process amount instruction information. Includes steps. The subframe configuration information is further used to indicate to the UE a HARQ timing relationship according to when the base station performs data communication with the UE. Accordingly, the UE can determine the second HARQ process amount according to the subframe configuration information, and further determine a HARQ timing relationship according to when data communication with the base station is performed according to the subframe configuration information. can do.

  The LTE system supports physical layer HARQ technology, where for each data transmission, the data receiver feeds back response information to the data sender to determine whether the data is received correctly. There is a need. In an LTE system, for downlink data transmission, the HARQ timing relationship is the timing relationship between downlink data transmission and uplink response information transmission, that is, in which subframe the uplink response after downlink data transmission. In uplink data transmission, the HARQ timing relationship is the timing relationship between uplink data transmission and downlink response information transmission, downlink response information transmission and uplink data retransmission. And the timing relationship between transmissions.

  For example, when the base station configures aggregation of TDD carriers having different subframe configurations for the UE, the main component carrier employs subframe configuration 1 and the secondary component carrier employs subframe configuration 3. Suppose the base station performs data communication with the UE on the secondary component carrier by using subframe configuration 3. In downlink data transmission performed on the secondary component carrier, the corresponding uplink response information is fed back to the main component carrier, and the HARQ timing relationship specified for subframe configuration 3 is continuously used. The uplink response information for the secondary component carrier to be fed back in subframe 4 cannot be fed back, since subframe 4 is a downlink subframe on the main component carrier. It is. In order to solve this problem, in the secondary component carrier having a subframe configuration different from the subframe configuration of the main component carrier, subframe configuration information may be additionally notified for the UE. For example, the added subframe configuration information indicates subframe configuration 5, which is a HARQ timing relationship according to when the base station performs downlink data communication with the UE on the secondary component carrier. According to the HARQ timing relationship defined by subframe configuration 5, all uplink response information is fed back in subframe 2, and subframe 2 on the main component carrier is uplink subframe. However, it avoids the problem that the uplink response information of downlink data transmission on the secondary component carrier cannot be fed back on the main component carrier.

  In another example, if the base station enables the functionality of dynamic reconfiguration of TDD subframe configuration for the UE, eg, as shown in FIG. 2, the base station may configure subframe configuration 1 through SIB1. UE is notified that subframe 3, subframe 4, subframe 8, and subframe 9 are set as dynamic subframes through the RRC message, and each dynamic subframe is notified. Dynamically for downlink data transmission (ie, used as a downlink subframe) or for uplink data transmission (ie, used as an uplink subframe), according to service requirements Can be used. As an example, when further using downlink data transmission, according to the HARQ timing relationship defined by subframe configuration 1, uplink response information needs to be fed back, so subframe 3 and subframe 8 are downlink. Although it cannot be used dynamically as a subframe, subframe 3 and subframe 8 may not have any uplink data at this time, so the benefits provided by dynamic subframe reconfiguration are fully Can't get. In order to solve this problem, the base station can additionally notify the UE of subframe configuration information. For example, the added subframe configuration information indicates subframe configuration 2, and this information is used to indicate to the UE the HARQ timing relationship according to when the base station performs downlink data communication with the UE. In accordance with the HARQ timing relationship defined by subframe configuration 2, all uplink response information is fed back in subframe 2 and subframe 7 without being fed back in dynamic subframes. Ensure that the whole can be used dynamically for downlink data transmission or uplink data transmission, according to the requirements of uplink and downlink services.

  In the above example, different subframe configurations may be signaled for downlink data transmission and uplink data transmission, respectively, and these subframe configurations are for HARQ timing relationship for downlink data transmission and for uplink data transmission. Note also that each is used to indicate a HARQ timing relationship.

  Existing subframe configuration notified through SIB1 and subframe configuration actually used in dynamic reconfiguration of TDD subframe configuration (determined according to dynamic subframe usage conditions or newly In addition to being notified by the base station directly through the introduced signaling), the notified subframe configuration information is used to indicate to the UE the HARQ timing relationship according to when the base station performs data communication with the UE. , Newly added and used for the UE, this may better support the UE in performing communication with the base station by adopting advanced functional features.

  Preferably, the subframe configuration information is one of the subframe configurations described in Table 1 (Table 1). At this time, the subframe configuration corresponding to the newly added subframe configuration information is different from the subframe configuration notified by SIB1 (that is, the subframe configuration indicated by the first HARQ process amount indication information). It may be the same as the subframe configuration notified by SIB1, where the difference is that the newly added subframe configuration information indicates when the base station performs data communication with the UE. The following HARQ timing relationship is shown to the UE and is used to determine the second HARQ process amount when data communication with the UE is performed. At this time, the subframe configuration actually used when the base station performs data communication with the UE is actually the subframe configuration notified by SIB1 or the dynamic reconfiguration of the TDD subframe configuration. It may be the subframe configuration used. The subframe configuration information included in the second HARQ process quantity indication information is used to indicate the subframe configuration actually used in data transmission, instead of when the base station performs data communication with the UE The subframe configuration (ie, the first HARQ process quantity indication information) used to indicate to the UE the HARQ timing relationship according to the above and provided via SIB1 provides backward compatibility for the initial version of the UE, It can be seen that it is used to perform data communication with an evolved UE that does not employ advanced functional features. Accordingly, the subframe configuration information included in the second HARQ process amount indication information in the embodiment of the present invention has a purpose and usage different from those of the first HARQ process amount indication information.

  In this embodiment, by notifying the subframe configuration information included in the second HARQ process amount indication information, the UE can change the subframe configuration actually used when the actual subframe configuration can be changed. Determines independent HARQ timing relationships, thereby better supporting the UE in performing communications with the base station by employing advanced functional features. When dynamic reconfiguration of TDD subframe configuration is adopted, the base station indicates a total of three types of subframe configuration information to the UE, where one is subframe configuration notified through SIB1 (Ie, first HARQ process amount indication information), one is a subframe configuration actually used for data transmission, and the other is a second described in the embodiment of the present invention. This is subframe configuration information included in HARQ process amount indication information. The subframe configuration notified through SIB1 provides backward compatibility for the initial version of the UE, is used to perform data communication with the evolved UE that does not adopt advanced functional features, and is actually used in data transmission. The subframe configuration used is used to determine whether each subframe in the wireless frame is used for uplink data transmission or downlink data transmission, and second HARQ process quantity indication information The second subframe configuration information included in is used to indicate to the UE a HARQ timing relationship according to when the base station performs data communication with the UE. At this time, both the base station and the UE perform data communication with the help of the HARQ timing relationship corresponding to the subframe configuration indicated by the subframe configuration information included in the second HARQ process amount indication information and the HARQ process amount. Can be executed. For example, in the dynamic reconfiguration of the TDD subframe configuration, by using FIG. 2 as an example, SIB1 informs subframe configuration 1, ie “DSUDUDDSUUD”, and the UE further transmits the subframe through the RRC message. 3 and notified that subframe 4, subframe 8, and subframe 9 are set as dynamic subframes. At this time, the PDSCH HARQ design needs to take into account the extreme case where all dynamic subframes are used for downlink service transmission, ie “DSUDDDDUDD”. The base station may notify the UE that the second HARQ process amount indication information is used for PDSCH HARQ through the RRC message, where the second HARQ process amount indication information is a subframe configuration. 2, that is, “DSUDDDDSUDD”. By using FIG. 3 as an example, SIB1 informs subframe configuration 1, and the UE further uses subframe configuration 0, in turn, in subframe configuration 0, in order to actually use in data transmission through the RRC message. It is notified that it is subframe configuration 2, subframe configuration 1, and subframe configuration 4. At this time, the PDSCH HARQ design needs to consider all possible actual used subframe configurations, i.e. PDSCH HARQ, subframe configuration 0, subframe configuration 2, subframe configuration 1, and subframe configuration After considering frame configuration 4 comprehensively, the UE may be notified through the RRC message that the second HARQ process quantity indication information is used for PDSCH HARQ, where the second HARQ The process quantity instruction information indicates subframe configuration 5. In the aggregation of TDD carriers with different subframe configurations, by using FIG. 4 as an example, the primary component carrier uses subframe configuration 2 and the secondary component carrier uses subframe configuration 1. In PDSCH transmission on the secondary component carrier, the uplink response information is transmitted on the main component carrier. At this time, the UE may be notified through the RRC message that the subframe configuration 5 is used for the secondary component carrier PDSCH HARQ, i.e., at this time, for the secondary component carrier. , The base station can notify the UE that the first HARQ process amount indication information of the secondary component carrier is subframe configuration 1, and through the RRC message, the second of the secondary component carrier The UE can be notified that the subframe configuration information included in the HARQ process amount indication information is the subframe configuration 5. Similarly, for the aggregation of FDD carrier and TDD carrier, for example, the FDD carrier is the primary component carrier, the TDD carrier is the secondary component carrier, and in the secondary component carrier, the base station also , Through the RRC message, subframe configuration 0 is used for secondary component carrier PDSCH HARQ, that is, the second subframe configuration information of the secondary component carrier is subframe configuration 0 Can be notified to the UE.

  In addition to the subframe configuration notified through the system message and the subframe configuration actually used for data transmission in the dynamic reconfiguration of the TDD subframe configuration, it is notified by the base station and newly added for the UE. In addition, through the subframe configuration information included in the second HARQ process amount indication information, the base station determines the HARQ timing relationship corresponding to the subframe configuration included in the second HARQ process amount indication information and the corresponding second Based on the HARQ process amount, data transmission with the UE can be performed, whereby dynamic reconfiguration of TDD subframe configuration, aggregation of carriers with different subframe configurations, and FDD and TDD carriers Effectively supporting the aggregation of It may be the solution.

  In this example, the function and effect of the subframe configuration information for only the subframe configuration information included in the second HARQ process amount indication information is analyzed. However, the second HARQ process amount indication information is different from that of the embodiment of the present invention. Note that the function and effect of the second HARQ process amount indication information is the same as the function and effect of the subframe configuration information, and will not be repeatedly described herein, including the implementation scheme in the example of FIG.

  The second HARQ process amount indication information includes a HARQ timing relationship. At this time, the step of determining the second HARQ process amount according to the second HARQ process amount instruction information is a step of determining the second HARQ process amount according to the HARQ timing relationship included in the second HARQ process amount instruction information. including. The HARQ timing relationship is used to indicate to the UE the HARQ timing relationship that is used when the base station performs data communication with the UE. In addition to notifying the UE of the subframe configuration information so that the UE determines the corresponding HARQ timing relationship and the second HARQ process amount according to the subframe configuration information, in this example, the base station also transmits the HARQ timing. Since the relationship can be notified directly to the UE, the UE determines the second HARQ process amount according to the notified HARQ timing relationship. As an example where the FDD carrier is the primary component carrier and the TDD carrier is the secondary component carrier, by using the aggregation of the FDD carrier and the TDD carrier, the base station can use the TDD carrier PDSCH HARQ through the RRC message. The UE can be informed that the satisfied HARQ timing relationship is for PDSCH transmission performed on subframe n, and the uplink response information is fed back in subframe n + 4, ie 4 after PDSCH transmission. In the second subframe, uplink response information is transmitted.

  The second HARQ process amount indication information is information on enabling dynamic reconfiguration of TDD subframe configuration, configuration information of aggregation of TDD carriers having different subframe configurations, or configuration of aggregation of FDD carriers and TDD carriers. Contains information.

When the second HARQ process amount indication information is the dynamic reconfiguration validation information of the TDD subframe configuration, the dynamic reconfiguration validation information of the TDD subframe configuration is the dynamic information of the TDD subframe configuration. This is information for notifying the UE that valid reconfiguration is to be enabled. In this example, TDD subframe configuration dynamic reconfiguration validation information may be signaled through independent signaling, and TDD subframe configuration dynamic reconfiguration validation information exists in the prior art. It can be represented by using signaling. For example, dynamic subframe configuration information may be used to represent enabling dynamic reconfiguration of TDD subframe configuration, and when the UE receives the dynamic subframe configuration information, the UE , It can know that dynamic reconfiguration of TDD subframe configuration has been enabled, or it is actually used by data transmission and notified through new signaling other than subframe configuration notified through system messages. Additional subframe configuration information may be used to represent enabling the dynamic reconfiguration of the TDD subframe configuration (i.e., the foregoing for performing the dynamic reconfiguration of the TDD subframe configuration. Signaling used to signal subframe configuration X that is actually used by the data transmission in another method). At this time, the step of determining the second HARQ process amount according to the second HARQ process amount instruction information determines the second HARQ process amount as a pre-defined value according to the second HARQ process amount instruction information. Includes steps. Preferably, the predefined value is greater than or equal to 8. The following predefined values are the same as the predefined values here and will not be described repeatedly. Since M _limit is a constant having a value of 8, equation (1) can be further simplified at this time. For example, if the predefined value is 8, ie, M _{DL_HARQ} = 8, equation (1) may be simplified as follows:

Or
When the second HARQ process amount indication information includes the dynamic reconfiguration validation information of the TDD subframe configuration, the dynamic reconfiguration validation information of the TDD subframe configuration is the dynamic subframe setting information. Alternatively, the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes subframe configuration information that is actually used in data transmission may be dynamic subframe setting information or a TDD subframe. According to the combination of subframe configuration information actually used in the data transmission included in the configuration dynamic reconfiguration validation information, the second HARQ process amount and all supported dynamic subframe settings Can be used by looking for a pre-stored association between or with a second HARQ process quantity By looking for correlation that is pre-stored between all combinations of sub-frame configuration information that may include the step of determining a second HARQ process variable. The combination of subframe configuration information that is actually used in data transmission is subframe configuration information included in a combination of subframe configurations that may be used, or subframe configuration information of a subframe configuration that is actually used. including. The second HARQ process quantity includes a maximum number of downlink HARQ processes and / or a maximum number of uplink HARQ processes. The association may be stored at the base station and UE through a predefined table. In the protocol, a table may be predefined, where all supported dynamic subframe settings are listed in the table, and the supported second HARQ process quantity is determined for each type of motion. Specified for general subframe configuration. For example, for the dynamic subframe configuration shown in FIG. 2, ie, subframe configuration in which subframe 3, subframe 4, subframe 8, and subframe 9 are configured as dynamic subframes, It can be defined in the table that the maximum number of link HARQ processes is 10 and the maximum number of uplink HARQ processes is 7. Alternatively, in the protocol, the table may be predefined, where all combinations of subframe configurations that may be used are listed in the table, and the supported second HARQ process quantity is Defined for each type of subframe configuration combination that may be used. For example, the combination of the subframe configurations shown in FIG. 3, that is, the actually used subframe configuration X may be a combination of subframe configuration 0, subframe configuration 1, subframe configuration 2, and subframe configuration 4. For the combination, it may be defined in the table that the maximum number of downlink HARQ processes is 15 and the maximum number of uplink HARQ processes is 7. The combination of all possible subframe configurations reported in the TDD subframe configuration dynamic reconfiguration validation information directly translates into all possible subframe configurations. The subframe configuration information included may be an index of a combination of subframe configurations actually used, and the subframe configuration information included in the combination may be acquired through the index. All possible subframe configurations constitute all possible subframe configuration combinations, and all possible subframe configuration combinations second Corresponding to the amount of HARQ process. The meaning of the combination in this specification is the same as this.

  When the second HARQ process amount indication information includes configuration information of aggregation of TDD carriers having different subframe configurations, the second HARQ process amount is the HARQ process amount of the secondary component carrier, and the different subframes The configuration information of the aggregation of the TDD carrier having the configuration includes a subframe configuration of the main component carrier and a subframe configuration of the secondary component carrier, and the second HARQ process amount is determined according to the second HARQ process amount indication information. The determining step may include determining the HARQ process amount of the secondary component carrier as a pre-defined value according to the configuration information of aggregation of TDD carriers having different subframe configurations. A component carrier has a sub-frame configuration different from the primary component carrier.

Or
When the second HARQ process amount indication information includes configuration information of aggregation of TDD carriers having different subframe configurations, the second HARQ process amount is the HARQ process amount of the secondary component carrier, and the different subframes The configuration information of the aggregation of the TDD carrier having the configuration includes a subframe configuration of the main component carrier and a subframe configuration of the secondary component carrier, and the second HARQ process amount is determined according to the second HARQ process amount indication information. In the determining step, the HARQ process amount of the secondary component carrier is the same as the HARQ process amount of the main component carrier according to the configuration information of aggregation of TDD carriers having different subframe configurations. Determining the HARQ process amount of the secondary component carrier as the greater of the HARQ process amount of the primary component carrier and the HARQ process amount of the secondary component carrier; Alternatively, the method may include determining the HARQ process amount of the secondary component carrier as the smaller of the HARQ process amount of the main component carrier and the HARQ process amount of the secondary component carrier, The main component carrier has a different subframe configuration from the main component carrier, and the HARQ process amount of the main component carrier is determined according to the subframe configuration of the main component carrier. A process variable, the HARQ process of secondary component carrier is a HARQ process variable which is determined in accordance with the sub-frame structure of the secondary component carrier. The configuration information of aggregation of TDD carriers having different subframe configurations includes a subframe configuration of a main component carrier and a subframe configuration of a secondary component carrier.

Or
When the second HARQ process amount indication information includes configuration information of aggregation of TDD carriers having different subframe configurations, the second HARQ process amount is the HARQ process amount of the secondary component carrier. The step of determining the second HARQ process amount according to the second HARQ process amount indication information includes subframe configuration and secondary of the main component carrier included in the configuration information of aggregation of TDD carriers having different subframe configurations. A mapping between the second HARQ process quantity and all supported combinations of the primary component carrier subframe configuration and the secondary component carrier subframe configuration according to the subframe configuration of the primary component carrier Searching may include determining a HARQ process amount of the secondary component carrier, where the secondary component carrier has a different subframe configuration than the primary component carrier. In the protocol, this mapping may be a predefined table, where all supported combinations of primary component carrier subframe configurations and secondary component carrier subframe configurations are listed in the table. And the amount of HARQ process supported on secondary component carriers is defined for each type of subframe configuration combination. The association may be stored in advance at the base station and the UE. The amount of HARQ processes supported on the secondary component carrier includes the maximum number of downlink HARQ processes and / or the maximum number of uplink HARQ processes. For example, if the subframe configuration of the main component carrier is subframe configuration 2 and the subframe configuration of the secondary component carrier is subframe configuration 4, the maximum downlink HARQ process of the secondary component carrier It may be specified in the table that the number of is 15 and the maximum number of secondary component carrier uplink HARQ processes is 4. If multiple secondary component carriers have a different subframe configuration than the primary component carrier, the supported HARQ process amount for each secondary component carrier can be determined by referring to the table: It may be obtained according to a combination of the subframe configuration of the secondary component carrier and the subframe configuration of the main component carrier. In all the above supported combinations of the primary component carrier subframe configuration and the secondary component carrier subframe configuration, the feedback of data transmission and response information is the aggregation of TDD carriers with different subframe configurations. , Each can be performed on a different component carrier. For example, for downlink data transmission performed on a secondary component carrier, the corresponding uplink response information is fed back on the main component carrier. Therefore, the setting of the second HARQ process amount needs to comprehensively consider the subframe configurations of the main component carrier and the secondary component carrier.

  When the second HARQ process amount indication information includes the configuration information of the aggregation of the FDD carrier and the TDD carrier, the second HARQ process amount is the HARQ process amount of the secondary component carrier, and the second HARQ process amount indication Determining the second HARQ process amount according to the information may include determining the HARQ process amount of the secondary component carrier as a pre-defined value according to the configuration information of the aggregation of the FDD carrier and the TDD carrier. .

Or
When the second HARQ process amount indication information is the configuration information of the aggregation of the FDD carrier and the TDD carrier, the second HARQ process amount is the HARQ process amount of the secondary component carrier, and the aggregation of the FDD carrier and the TDD carrier The configuration information includes a subframe configuration of the TDD carrier, and the step of determining the HARQ process amount according to the second HARQ process amount indication information includes determining the HARQ process amount of the secondary component carrier, the HARQ process amount of the FDD carrier , Determining as a larger one of the HARQ process amounts determined according to the subframe configuration of the TDD carrier, or determining the HARQ process amount of the secondary component carrier as the HARQ process amount of the FDD carrier It may include determining the smaller of the determined HARQ process variable in accordance with the sub-frame structure of the TDD carrier. Alternatively, when the second HARQ process amount indication information is configuration information of the aggregation of the FDD carrier and the TDD carrier, the step of determining the HARQ process amount according to the second HARQ process amount indication information includes the aggregation of the FDD carrier and the TDD carrier. If the secondary component carrier is a TDD carrier in accordance with the configuration information of the above, the HARQ process amount of the secondary component carrier is determined as the HARQ process amount of the FDD carrier, and the secondary component carrier is an FDD carrier. In some cases, the method may include determining the HARQ process amount of the secondary component carrier as the HARQ process amount determined according to the subframe configuration of the TDD carrier. Since the HARQ process amount of the FDD carrier is unchanged, the HARQ process amount of the FDD carrier can be directly determined.

  In an embodiment of the present invention, by transmitting the second HARQ process amount indication information to the UE, the base station can perform data communication with the UE based on different HARQ timing relationship and HARQ process amount, This makes it possible to better support UEs that employ different functional features. Specifically, in a UE configured with advanced functional features such as dynamic reconfiguration of TDD subframe configuration, aggregation of TDD carriers with different subframe configurations, and aggregation of FDD and TDD carriers. The base station is more effective with UEs configured with advanced functional features by using a HARQ timing relationship different from the HARQ timing relationship corresponding to the subframe configuration reported through the SIB1 message on the carrier. Data communication can be executed.

  This embodiment further provides a base station, where the base station can perform a wireless communication method supporting HARQ according to the above-described embodiments of the present invention. As shown in FIG. 6, the base station includes a transmission module 601 and a processing module 602.

The transmission module 601 is configured to transmit the first HARQ process amount indication information to the UE,
When the transmission module 601 further transmits the second HARQ process amount indication information to the UE, the processing module 602 determines the second HARQ process amount according to the second HARQ process amount indication information, and the determined second Is configured to perform data transmission with the UE through the transmission module 601 according to the amount of HARQ process.

  The processing module 602 further determines the first HARQ process amount according to the first HARQ process amount indication information when the transmission module 601 does not transmit the second HARQ process amount indication information to the UE, and the determined first Is configured to perform data transmission with the UE through the transmission module 601 according to the amount of HARQ process.

In this embodiment, the second HARQ process quantity determined by the processing module 602 is the maximum number of downlink HARQ processes M _{DL_HARQ} or the maximum number of uplink HARQ processes M _{UL_HARQ} ,
The processing module further calculates the size of the HARQ soft buffer, divides the soft buffer according to the maximum number of downlink HARQ processes M _{DL_HARQ} , and data with the UE based on the divided soft buffer and the second HARQ process amount. Configured to perform transmission.

In the carrier aggregation situation, the transmission module 601 specifically transmits the first HARQ process amount indication information of at least one component carrier to the UE for at least one component carrier, and the second HARQ process amount indication information is If further transmitted, the second HARQ process amount indication information of at least one component carrier is configured to be transmitted to the UE;
When the processing module performs data transmission with the UE, the processing module performs data transmission with the UE on at least one component carrier according to the second HARQ process amount,
At least one component carrier is a component carrier that enables a dynamic reconfiguration function of a time division duplex TDD subframe configuration, or a secondary component carrier having a subframe configuration different from the main component carrier It is.

  In this embodiment, when performing communication with a UE on multiple carriers simultaneously for aggregation of carriers with different subframe configurations, the transmission module 601 specifically addresses each secondary component carrier. , Configured to send second HARQ process amount indication information of each secondary component carrier to the UE, wherein the secondary component carrier has a different subframe configuration than the primary component carrier. Have.

  The transmission module 601 is particularly configured to transmit the first HARQ process amount indication information to the UE through the first system information block message, and the first HARQ process amount indication information is included in the first system information block message. This is the same in the following and will not be described repeatedly.

Optionally,
The second HARQ process amount indication information transmitted by the transmission module 601 includes the second HARQ process amount, and the processing module 602 specifically indicates the second HARQ process amount indication included in the second HARQ process amount indication information. Configured to determine as a HARQ process amount of 2, or
The second HARQ process amount indication information transmitted by the transmission module 601 includes the HARQ timing relationship, and the processing module 602 particularly determines the second HARQ process amount according to the HARQ timing relationship included in the second HARQ process amount indication information. Configured to determine, or
The second HARQ process amount indication information transmitted by the transmission module 601 includes subframe configuration information, and the processing module 602 specifically includes the second HARQ process according to the subframe configuration information included in the second HARQ process amount indication information. Configured to determine the amount, or
The second HARQ process quantity indication information transmitted by the transmission module 601 includes dynamic reconfiguration validation information of time division duplex TDD subframe configuration, wherein the base station further includes a second HARQ process Including a storage module 603 configured to store a predefined value for the quantity, and the processing module 602 specifically includes a second HARQ in accordance with the dynamic reconfiguration validation information of the TDD subframe configuration. Activation information for dynamic reconfiguration of the TDD subframe configuration configured to determine the process quantity as a predefined value stored in the storage module 603 or transmitted by the transmission module 601 is dynamic The base station further includes a second HARQ process amount and all supported dynamic subframes. A storage module 603 configured to store the associations between the subframe configuration and the processing module 602 in particular, the dynamic sub-configuration included in the dynamic reconfiguration validation information of the TDD sub-frame configuration According to the frame setting information, the second HARQ process amount is determined by looking for an association between the second HARQ process amount and all supported dynamic subframe settings stored in the storage module 603. Or the dynamic reconfiguration validation information of the TDD subframe configuration transmitted by the transmission module 601 includes a combination of subframe configuration information actually used in data transmission, and the base station Furthermore, between the second HARQ process amount and all combinations of subframe configuration information that may be used. Including a storage module 603 configured to store the association, and the processing module 602 specifically includes subframe configuration information that is actually used in data transmission and included in the dynamic reconfiguration validation information of the TDD subframe configuration In accordance with the combination of the second HARQ process amount and the second HARQ by looking for an association between all combinations of subframe configuration information that may be used stored in the storage module 603. Configured to determine the process volume,
Or
The second HARQ process amount indication information transmitted by the transmission module 601 includes aggregation information of aggregation of TDD carriers having different subframe configurations, and the second HARQ process amount is the HARQ process amount of the secondary component carrier. And the configuration information of the aggregation of TDD carriers having different subframe configurations includes the subframe configuration of the main component carrier and the subframe configuration of the secondary component carrier, and the secondary component carrier is the main component The processing module 602 has a subframe configuration different from that of the carrier, and in particular, the HARQ of the secondary component carrier according to the configuration information of the aggregation of the TDD carrier having the different subframe configuration. The process amount is configured to be determined as a pre-defined value stored in the storage module 603, wherein the base station further stores a pre-defined value for the second HARQ process amount. Or configured to determine a secondary component carrier process quantity as a HARQ process quantity determined according to a main component carrier subframe configuration, or a secondary component carrier process quantity The HARQ process amount of a major component carrier is determined as the larger of the HARQ process amount determined according to the subframe configuration of the main component carrier and the HARQ process amount determined according to the subframe configuration of the secondary component carrier Configured as well as The HARQ process amount of the secondary component carrier is smaller than the HARQ process amount determined according to the subframe configuration of the main component carrier and the HARQ process amount determined according to the subframe configuration of the secondary component carrier. Stored according to the subframe configuration of the main component carrier and the subframe configuration of the secondary component carrier included in the configuration information of the aggregation of TDD carriers having different subframe configurations. The second HARQ process quantity stored in module 603 and all supported combinations of primary component carrier subframe configuration and secondary component carrier subframe configuration Is configured to determine the HARQ process amount of the secondary component carrier by looking for an association between the second and second component carriers, wherein the base station further includes the second HARQ process amount and the main component carrier A storage module 603 configured to store an association between the subframe configuration and all supported combinations of secondary component carrier subframe configurations;
Or
The second HARQ process amount indication information transmitted by the transmission module 601 includes the configuration information of the aggregation of the FDD carrier and the TDD carrier, and the second HARQ process amount is the HARQ process amount of the secondary component carrier, The configuration information of the aggregation of the FDD carrier and the TDD carrier includes the subframe configuration of the TDD carrier, and the processing module 602 particularly stores the HARQ process amount of the secondary component carrier according to the configuration information of the aggregation of the FDD carrier and the TDD carrier. Configured to determine as a predefined value stored in module 603, wherein the base station is further configured to store a predefined value for the second HARQ process quantity. Memory module Or configured to determine the HARQ process amount of the secondary component carrier as the larger of the HARQ process amount of the FDD carrier and the HARQ process amount determined according to the subframe configuration of the TDD carrier. Or configured to determine the HARQ process amount of the secondary component carrier as the smaller of the HARQ process amount of the FDD carrier and the HARQ process amount determined according to the subframe configuration of the TDD carrier, Alternatively, when the secondary component carrier is a TDD carrier, it is configured to determine the HARQ process amount of the secondary component carrier as the HARQ process amount of the FDD carrier, and the secondary component carrier is the FDD key. If a rear, configured to determine the HARQ process of secondary component carrier as HARQ process variable which is determined in accordance with the sub-frame structure of the TDD carrier.

  Preferably, the predefined value stored in the storage module 603 is greater than or equal to 8.

  Preferably, the subframe configuration information is one of the seven types of subframe configurations described in Table 1 (Table 1).

  It should be noted that in the method according to an aspect of the embodiment of the present invention, the module of the base station performs contents such as an information exchange and execution process. Specifically, reference may be made to the description of the method embodiments. Moreover, this embodiment of the base station is based on the same idea as the method embodiment according to the aforementioned aspect, and the technical effect brought about thereby is the same as the technical effect of the method embodiment of the present invention. . For specific contents, reference may be made to the description of the method embodiments of the present invention, which will not be repeated here.

  In another aspect, another embodiment of the present invention further provides a wireless communication method that supports HARQ. As shown in FIG. 7, the method includes the following steps.

  Step 701: Receive first HARQ process amount indication information transmitted by a base station.

  In this step, the first HARQ process quantity indication information is the subframe configuration to be used, which is carried in the first system information block message.

  Step 702: If the second HARQ process amount indication information transmitted by the base station is further received, determine the second HARQ process amount according to the second HARQ process amount indication information, and determine the determined second Data transmission with the base station is executed based on the HARQ process amount.

  The embodiment further determines the first HARQ process amount according to the first HARQ process amount indication information when the second HARQ process amount indication information transmitted by the base station is not received, and determines the determined first Performing data transmission with the base station according to the amount of HARQ process.

  Regarding the second HARQ process amount indication information, it is possible to refer to the description of the above-described embodiment, and how to determine the second HARQ process amount according to the second HARQ process amount indication information, Reference may be made to the corresponding descriptions of the foregoing embodiments, which are not repeated here.

In this embodiment, the second HARQ process quantity is the maximum number of downlink HARQ processes M _{DL_HARQ} , or the maximum number of uplink HARQ processes M _{UL_HARQ} , before performing data transmission with the base station. The method of the embodiment may further comprise the step of calculating the size of the HARQ soft buffer and dividing the soft buffer according to the maximum number of downlink HARQ processes M _{DL_HARQ, the base} according to the determined second HARQ process amount. The step of performing data transmission with the station includes, in particular, performing data transmission with the base station according to the divided soft buffer and the second HARQ process amount.

In this embodiment, in the situation of carrier aggregation, the step of receiving the first HARQ process amount indication information and the step of receiving the second HARQ process amount indication information are:
In the state of carrier aggregation, for at least one component carrier, the first HARQ process amount indication information is the first HARQ process amount indication information of at least one component carrier, and the second HARQ process amount indication information is Second HARQ process amount indication information of at least one component carrier;
Performing data transmission with a base station on a component carrier according to a second HARQ process amount when performing data transmission with the base station;
At least one component carrier is a component carrier that enables a dynamic reconfiguration function of a time division duplex TDD subframe configuration, or a secondary component carrier having a subframe configuration different from the main component carrier It is.

  In an embodiment of the present invention, by receiving the second HARQ process amount indication information transmitted by the base station, the UE uses the different HARQ timing relationship and HARQ process amount to perform data communication with the base station. Can be executed.

  In addition, in LTE TDD systems, data transmission is based on scheduling, scheduling information for data transmission (eg information such as resource allocation and data transmission format) is carried in downlink control information (Downlink Control Information, DCI), The DCI includes a 4-bit HARQ process number field that indicates the number of HARQ processes used by the current data transmission. By using a system message that reports subframe configuration 0 as an example, it can be seen from Table 2 (Table 2) that the maximum number of downlink HARQ processes is 4, when the UE has DCI After receiving and obtaining the 4-bit HARQ process number field through the decision, the UE considers the value of the HARQ process number field as valid only if the value is between 0 and 3, and the value is 4 If the value is between 15 and 15, the value of the HARQ process number field is regarded as invalid, and the corresponding data is not received or transmitted. In the embodiment of the present invention, when determining the second HARQ process amount according to the second HARQ process amount indication information, the HARQ process number field in the DCI is determined according to the second HARQ process amount indication information. Need to be determined by using the quantity. When the second HARQ process amount indication information is not transmitted and the HARQ process amount is determined according to the first HARQ process amount indication information, the HARQ process number field in the DCI is determined according to the first HARQ process amount indication information. Determined by using the amount of HARQ process to be performed.

  In an embodiment of the present invention, by receiving the second HARQ process amount indication information transmitted by the base station, the UE uses the different HARQ timing relationship and HARQ process amount to perform data communication with the base station. And the number of HARQ processes in DCI field can be determined accordingly. Specifically, in a UE configured with advanced functional features such as dynamic reconfiguration of TDD subframe configuration, aggregation of TDD carriers with different subframe configurations, and aggregation of FDD and TDD carriers. The data communication can be performed by the base station by using a HARQ timing relationship different from the HARQ timing relationship corresponding to the subframe configuration notified through the SIB1 message on the carrier.

  Based on the method provided in the foregoing another embodiment, this embodiment further provides a user equipment, which performs the wireless communication method supporting HARQ of the foregoing other embodiment of the present invention. can do. As shown in FIG. 8, the user device includes a receiving module 801 and a processing module 802.

The receiving module 801 is configured to receive the first hybrid automatic repeat request HARQ process amount indication information transmitted by the base station,
The processing module 802 determines the second HARQ process amount according to the second HARQ process amount indication information when the receiving module 801 further receives the second HARQ process amount indication information transmitted by the base station, and determines The data transmission with the base station through the reception module 801 is performed based on the determined second HARQ process amount.

  Moreover, the processing module 802 further determines the first HARQ process amount according to the first HARQ process amount indication information when the receiving module 801 does not receive the second HARQ process amount indication information transmitted by the base station. And configured to perform data transmission with the base station through the receiving module 801 according to the determined first HARQ process amount.

In this embodiment, the second HARQ process quantity determined by the processing module 802 is the maximum number of downlink HARQ processes M _{DL_HARQ} or the maximum number of uplink HARQ processes M _{UL_HARQ} ,
The processing module 802 further calculates the size of the HARQ soft buffer, divides the soft buffer according to the maximum number of downlink HARQ processes M _{DL_HARQ} , and determines the base station based on the divided soft buffer and the second HARQ process amount. Configured to perform data transmission.

In this embodiment, in the situation of carrier aggregation, the receiving module is particularly adapted to receive first HARQ process quantity indication information of at least one component carrier transmitted by the base station for at least one component carrier. Configured, if the second HARQ process amount indication information is further received, the second HARQ process amount indication information received by the receiving module is the second HARQ process amount indication information of at least one component carrier;
When the processing module performs data transmission with the base station, the processing module performs data transmission with the base station on at least one component carrier according to the second HARQ process amount,
The at least one component carrier is a component carrier that enables a dynamic reconfiguration function of the TDD subframe configuration, or a secondary component carrier having a subframe configuration different from the main component carrier.

  In this embodiment, due to the aggregation of carriers with different subframe configurations, the receiving module 801, especially when the base station simultaneously performs communication with the user equipment UE on multiple carriers, Configured to receive second HARQ process quantity indication information for each secondary component carrier transmitted to the UE by the base station for the component carrier, respectively, wherein the secondary component carrier is a primary component carrier Has a different subframe configuration.

  For the second HARQ process amount indication information received by the reception module 801, the description of the above-described embodiment can be referred to, and the processing module 802 determines the second HARQ process amount according to the second HARQ process amount indication information. With regard to how to determine, reference can also be made to the corresponding description of the previous embodiments, which will not be repeated here. In accordance with certain requirements, the user equipment is further configured to store a pre-defined value for the second HARQ process quantity or the second HARQ process quantity and all supported dynamic Configured to store associations between subframe settings, or stores associations between the second HARQ process quantity and all combinations of subframe configuration information that may be used Or an association between the second HARQ process quantity and all supported combinations of the primary component carrier subframe configuration and the secondary component carrier subframe configuration. A storage module 803 configured to store may be included. Specifically, the storage module 603 can be referred to.

  In addition, the processing module 802 further provides a HARQ process in the downlink control information DCI according to the second HARQ process amount when the receiving module 801 further receives the second HARQ process amount indication information transmitted by the base station. Configured to determine a number field.

  It should be noted that in a method according to another embodiment of the present invention, a module of the user equipment executes content such as an information transfer and execution process. Specifically, reference may be made to the description of the method embodiments. Moreover, the user device embodiment is based on the same idea as the method embodiment of the above-described method embodiment, and the technical effect brought about thereby is the same as the technical effect of the method embodiment of the present invention. is there. For specific contents, reference may be made to the description of the method embodiments of the present invention, which will not be repeated here.

  In the user equipment and base station embodiments, the division of the functional modules is only an example, and in actual application, the functionality is determined according to the requirements, for example, considering the corresponding hardware configuration requirements or software implementation convenience. Different functional modules may be allocated for implementation, ie the internal structure of the user equipment and the base station is divided into different functional modules in order to implement all or part of the functions described above. Moreover, in practical applications, the corresponding functional modules in this embodiment may be implemented by corresponding hardware or by corresponding hardware executing corresponding software. For example, the transmission module may be hardware that performs the functions of the transmission module, eg, a transmitter, and may be a general processor or another computer program capable of executing a corresponding computer program for implementing the functions. It may be a hardware device. In another example, a processing module may be a processing module, eg, hardware that performs the functions of a processor, and is another hardware device capable of executing a corresponding computer program for implementing the functions. May be. In yet another example, the receiving module may be hardware that performs the functions of the receiving module, eg, a receiver, and may execute a general processor or a corresponding computer program for implementing the functions. It may be another possible hardware device. (The principles of the foregoing description may apply to all embodiments provided in this specification.)

  Moreover, certain embodiments of the present invention further provide a wireless communication system that supports HARQ, which includes the user equipment and base station described in the previous embodiments. The specific configurations and functions of the user apparatus and the base station can be referred to the above-described embodiment, and will not be described repeatedly in this specification.

  One skilled in the art can appreciate that all or some of the method steps of the embodiments may be implemented by a program that instructs the associated hardware. The program may be stored in a computer readable storage medium, which may include read only memory (ROM), random access memory (RAM), random access memory, magnetic disk, or optical disk.

  The method, user equipment, and base station provided in the embodiments of the present invention will be described in detail. Specific examples are used to illustrate the principle, and the manner of implementation of the present invention will be described through specific examples. The descriptions of the embodiments of the present invention are merely used to help understand the method and core ideas of the present invention. One skilled in the art can make changes to the present invention with respect to specific implementation schemes and scopes in accordance with the inventive idea. Accordingly, the content described herein should not be construed as a limitation on the present invention.

601 Transmission module 602 Processing module 603 Storage module 801 Reception module 802 Processing module 803 Storage module

Claims (34)

A wireless communication method supporting hybrid automatic repeat request,
Transmitting the first hybrid automatic repeat request HARQ process amount instruction information to the user apparatus UE;
When the second HARQ process amount indication information is further transmitted to the UE, the second HARQ process amount indication information is determined according to the second HARQ process amount indication information, and the second HARQ process amount indication information is determined according to the determined second HARQ process amount. Performing data transmission with the UE. The second HARQ process amount is a maximum number of downlink HARQ processes M _{DL_HARQ} , or a maximum number of uplink HARQ processes M _{UL_HARQ} ;
The method further comprises calculating a size of a HARQ soft buffer and dividing the soft buffer according to the maximum number of downlink HARQ processes M _{DL_HARQ} before the step of performing data transmission with the UE. ,
The step of performing data transmission with the UE according to the determined second HARQ process amount, in particular, performing data transmission with the UE according to the divided soft buffer and the second HARQ process amount. The method of claim 1 comprising: In the state of carrier aggregation, for at least one component carrier, the first HARQ process amount indication information is the first HARQ process amount indication information of the at least one component carrier, and the second HARQ process Quantity indication information is the second HARQ process quantity indication information of the at least one component carrier;
Performing the data transmission with the UE comprises performing data transmission with the UE on the at least one component carrier according to the second HARQ process amount;
The at least one component carrier enables a function of dynamic reconfiguration of a time division duplex TDD subframe configuration, or a secondary component having a subframe configuration different from the main component carrier The method according to claim 1, wherein the method is a carrier.   When the second HARQ process amount indication information is not transmitted to the UE, the first HARQ process amount indication information is determined according to the first HARQ process amount indication information, and the first HARQ process amount indication information is determined according to the determined first HARQ process amount. The method according to any one of claims 1 to 3, further comprising performing data transmission with the UE. The second HARQ process amount indication information includes the second HARQ process amount, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the second HARQ process amount Determining the second HARQ process amount included in the quantity indication information as the second HARQ process amount; or
The second HARQ process amount indication information includes HARQ timing relation, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the second HARQ process amount indication information in the second HARQ process amount indication information Determining the second HARQ process amount according to the included HARQ timing relationship, or
The second HARQ process amount indication information includes subframe configuration information, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the second HARQ process amount indication information. Determining the second HARQ process amount according to the subframe configuration information included in
Determining the number of HARQ processes according to the second HARQ process quantity indication information, wherein the second HARQ process quantity indication information includes dynamic reconfiguration enabling information of a time division duplex TDD subframe configuration; Determining the second HARQ process amount as a predefined value according to the dynamic reconfiguration validation information of the TDD subframe configuration, or the dynamic of the TDD subframe configuration The reconfiguration enabling information includes dynamic subframe configuration information, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the step of determining the dynamic of the TDD subframe configuration In accordance with the dynamic subframe configuration information included in the valid reconfiguration validation information, the second HARQ process amount and all the Determining the second HARQ process amount by looking for a pre-stored association with the ported dynamic subframe configuration, or including the dynamic of the TDD subframe configuration The step of determining the second HARQ process amount according to the second HARQ process amount indication information, wherein reconfiguration validation information includes a combination of subframe configuration information actually used in the data transmission; According to the combination of subframe configuration information actually used in the data transmission included in the dynamic reconfiguration validation information of the TDD subframe configuration, the second HARQ process amount and the possibility of being used By searching for a pre-stored association between all combinations of subframe configuration information with Comprises determining a second HARQ process variable,
Or
The second HARQ process amount indication information includes configuration information of aggregation of TDD carriers having different subframe configurations, and the second HARQ process amount is a HARQ process amount of the secondary component carrier, which is different The configuration information of aggregation of a TDD carrier having a subframe configuration includes a subframe configuration of a main component carrier and a subframe configuration of the secondary component carrier, and the secondary component carrier is the main component Aggregation of a TDD carrier having the subframe configuration different from a carrier and determining the second HARQ process amount according to the second HARQ process amount indication information, wherein the step of determining the second HARQ process amount has a different subframe configuration. Determining the HARQ process amount of the secondary component carrier as the predefined value according to the configuration information of the secondary component carrier, or determining the HARQ process amount of the secondary component carrier as the primary Determining as a HARQ process amount determined according to the subframe configuration of a major component carrier, or determining the HARQ process amount of the secondary component carrier according to the subframe configuration of the primary component carrier Determining as the larger of the HARQ process amount and the HARQ process amount determined according to the subframe configuration of the secondary component carrier, or the HA of the secondary component carrier Q process amount is defined as the smaller of the HARQ process amount determined according to the subframe configuration of the main component carrier and the HARQ process amount determined according to the subframe configuration of the secondary component carrier Determining or according to the subframe configuration of the primary component carrier and the subframe configuration of the secondary component carrier included in the configuration information of aggregation of TDD carriers having different subframe configurations, An association between a second HARQ process quantity and all supported combinations of the subframe configuration of the primary component carrier and the subframe configuration of the secondary component carrier Determining the HARQ process amount of the secondary component carrier by searching;
Or
The second HARQ process amount indication information includes configuration information of aggregation of frequency division duplex FDD carrier and TDD carrier, and the second HARQ process amount is the HARQ process amount of the secondary component carrier The step of determining the HARQ process amount in accordance with the second HARQ process amount indication information, wherein the configuration information of the aggregation of the FDD carrier and the TDD carrier includes a subframe configuration of the TDD carrier. Determining the HARQ process amount of the secondary component carrier as a predefined value according to the configuration information of the aggregation, or determining the HARQ process amount of the secondary component carrier as the F Determining the HARQ process amount of the D carrier and the HARQ process amount determined according to the subframe configuration of the TDD carrier, or the HARQ process amount of the secondary component carrier, as the larger one A step of determining as a smaller one of the HARQ process amount of an FDD carrier and the HARQ process amount determined according to the subframe configuration of the TDD carrier, or the secondary component carrier is the TDD carrier If the HARQ process amount of the secondary component carrier is determined as the HARQ process amount of the FDD carrier, and the secondary component carrier is the FDD carrier, the secondary component carrier It comprises determining the HARQ processes of preparative carrier as the HARQ process variable which is determined in accordance with the sub-frame structure of the TDD carrier, the method according to any one of claims 1 to 4. The subframe configuration information is one of the subframe configurations in the following table;

6. The method of claim 5, wherein D represents a downlink subframe, U represents an uplink subframe, and S represents a special subframe.   The method according to claim 5 or 6, wherein the predefined value is greater than or equal to 8.   The step of transmitting the first HARQ process amount indication information to the UE includes transmitting the first HARQ process amount indication information to the UE through a first system information block message. The method according to claim 1 or 2, wherein the HARQ process amount indication information is subframe configuration information in the first system information block message. A wireless communication method supporting hybrid automatic repeat request,
Receiving first hybrid automatic repeat request HARQ process amount indication information transmitted by a base station;
When second HARQ process amount indication information transmitted by the base station is further received, a second HARQ process amount is determined according to the second HARQ process amount indication information, and the determined second Performing data transmission with the base station based on a HARQ process amount. The second HARQ process amount is a maximum number of downlink HARQ processes M _{DL_HARQ} or a maximum number of uplink HARQ processes M _{UL_HARQ} , and before the step of performing data transmission with the base station, Calculating the size of a HARQ soft buffer and further dividing the soft buffer according to the maximum number M _{DL_HARQ of} downlink HARQ processes;
The step of performing data transmission with the base station according to the determined second HARQ process amount performs data transmission with the base station according to the divided soft buffer and the second HARQ process amount. The method of claim 9, comprising steps. In the state of carrier aggregation, for at least one component carrier, the first HARQ process amount indication information is the first HARQ process amount indication information of the at least one component carrier, and the second HARQ process Quantity indication information is the second HARQ process quantity indication information of the at least one component carrier;
Performing the data transmission with the base station comprises performing data transmission with the base station on the at least one component carrier according to the second HARQ process amount;
The at least one component carrier enables a function of dynamic reconfiguration of a time division duplex TDD subframe configuration, or a secondary component having a subframe configuration different from the main component carrier The method according to claim 9 or 10, which is a carrier. The second HARQ process amount indication information includes the second HARQ process amount, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the second HARQ process amount Determining the second HARQ process amount included in the quantity indication information as the second HARQ process amount; or
The second HARQ process amount indication information includes HARQ timing relation, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the second HARQ process amount indication information in the second HARQ process amount indication information Determining the second HARQ process amount according to the included HARQ timing relationship, or
The second HARQ process amount indication information includes subframe configuration information, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the second HARQ process amount indication information. Determining the second HARQ process amount according to the subframe configuration information included in
Determining the HARQ process amount according to the second HARQ process amount indication information, wherein the second HARQ process amount indication information includes dynamic reconfiguration enabling information of a time division duplex TDD subframe configuration; Determining the second HARQ process amount as a pre-defined value according to the dynamic reconfiguration validation information of the TDD subframe configuration, or the dynamic amount of the TDD subframe configuration The reconfiguration enabling information includes dynamic subframe setting information, and the step of determining the second HARQ process amount according to the second HARQ process amount indication information includes the step of determining the dynamic amount of the TDD subframe configuration. According to the dynamic subframe setting information included in the reconfiguration validation information, the second HARQ process amount and all the subframe configuration information are included. Determining the second HARQ process amount by looking for a pre-stored association with the activated dynamic subframe configuration, or the dynamic of the TDD subframe configuration The step of determining the second HARQ process amount according to the second HARQ process amount indication information, wherein valid reconfiguration validation information includes a combination of subframe configuration information actually used in the data transmission The second HARQ process amount, and may be used according to the combination of subframe configuration information actually used in the data transmission included in the dynamic reconfiguration validation information of the TDD subframe configuration By searching for a pre-stored association between all combinations of the characteristic subframe configuration information Wherein the step of determining a second HARQ process variable,
Or
The second HARQ process amount indication information includes configuration information of aggregation of TDD carriers having different subframe configurations, and the second HARQ process amount is a HARQ process amount of a secondary component carrier, and has different subframes. The configuration information of aggregation of a TDD carrier having a frame configuration includes a subframe configuration of a main component carrier and a subframe configuration of the secondary component carrier, and the secondary component carrier is the main component carrier Aggregation of TDD carriers having a different subframe configuration, wherein the step of determining the second HARQ process amount in accordance with the second HARQ process amount indication information comprises a different subframe configuration Determining the HARQ process amount of the secondary component carrier as a predefined value according to the configuration information, or determining the HARQ process amount of the secondary component carrier of the primary component carrier Determining the HARQ process amount determined according to the subframe configuration, or determining the HARQ process amount of the secondary component carrier as the HARQ process amount determined according to the subframe configuration of the primary component carrier Determining the larger of the amount of HARQ processes determined according to the subframe configuration of the secondary component carrier, or the HARQ process of the secondary component carrier Determining as the smaller of the HARQ process quantity determined according to the subframe configuration of the primary component carrier and the HARQ process quantity determined according to the subframe configuration of the secondary component carrier Or according to the subframe configuration of the primary component carrier and the subframe configuration of the secondary component carrier included in the configuration information of aggregation of TDD carriers having different subframe configurations. By looking for an association between the HARQ process amount and all supported combinations of the subframe configuration of the primary component carrier and the subframe configuration of the secondary component carrier And determining the HARQ process amount of the secondary component carrier,
Or
The second HARQ process amount indication information includes configuration information of aggregation of frequency division duplex FDD carrier and TDD carrier, and the second HARQ process amount is the HARQ process amount of the secondary component carrier The step of determining the second HARQ process amount according to the second HARQ process amount indication information, wherein the configuration information of the aggregation of the FDD carrier and the TDD carrier includes a subframe configuration of the TDD carrier; Determining the HARQ process amount of the secondary component carrier as a predefined value according to the configuration information of the aggregation of the TDD carrier, or the HARQ process amount of the secondary component carrier, Determining a larger one of the HARQ process amount of the FDD carrier and the HARQ process amount determined according to the subframe configuration of the TDD carrier, or the HARQ process amount of the secondary component carrier, Determining as a smaller one of the HARQ process amount of the FDD carrier and the HARQ process amount determined according to the subframe configuration of the TDD carrier, or when the secondary component carrier is the TDD carrier In some cases, the HARQ process amount of the secondary component carrier is determined as the HARQ process amount of the FDD carrier, and when the secondary component carrier is the FDD carrier, the secondary component carrier is determined. Comprises determining the HARQ processes of chromatography whereof carrier as the HARQ process variable, wherein it is judged in accordance with the sub-frame structure of the TDD carrier, the method according to any one of claims 9 11. The subframe configuration information is one of the subframe configurations in the following table;

The method of claim 12, wherein D represents a downlink subframe, U represents an uplink subframe, and S represents a special subframe.   14. A method according to claim 12 or 13, wherein the predefined value is greater than or equal to 8. Prior to the step of performing data transmission with the base station, the second HARQ process amount indication information transmitted by the base station is further received;
15. The method according to any one of claims 9 to 14, further comprising determining a HARQ process number field in downlink control information DCI according to the second HARQ process quantity.   When the second HARQ process amount indication information transmitted by the base station is not received, a first HARQ process amount is determined according to the first HARQ process amount indication information, and the determined first HARQ is determined. The method according to any one of claims 9 to 15, further comprising performing data transmission with the base station according to a process quantity.   The step of receiving the first HARQ process amount indication information transmitted by the base station receives the first HARQ process amount indication information transmitted by the base station through a first system information block message. The method according to claim 9 or 10, wherein the first HARQ process amount indication information is subframe configuration information in the first system information block message. A transmission module configured to transmit first hybrid automatic repeat request HARQ process amount indication information to the user equipment UE;
When the transmission module further transmits second HARQ process amount indication information to the UE, the second HARQ process amount is determined according to the second HARQ process amount indication information, and the determined second HARQ is determined. A processing module configured to perform data transmission with the UE through the transmission module according to a process quantity. The second HARQ process quantity determined by the processing module is a maximum number of downlink HARQ processes M _{DL_HARQ} or a maximum number of uplink HARQ processes M _{UL_HARQ} ;
The processing module further calculates a size of a HARQ soft buffer, divides the soft buffer according to the maximum number of downlink HARQ processes M _{DL_HARQ,} and based on the divided soft buffer and the second HARQ process amount The base station according to claim 18, wherein the base station is configured to perform data transmission with the UE. In the situation of carrier aggregation, the transmission module transmits the first HARQ process amount indication information of the at least one component carrier to the UE, particularly for at least one component carrier, and the second HARQ process If quantity indication information is further transmitted, the second HARQ process quantity indication information of the at least one component carrier is configured to be transmitted to the UE;
The processing module is specifically configured to perform data transmission with the UE on the at least one component carrier according to the second HARQ process quantity;
The at least one component carrier enables a function of dynamic reconfiguration of a time division duplex TDD subframe configuration, or a secondary component having a subframe configuration different from the main component carrier The base station according to claim 18 or 19, which is a carrier.   The processing module further determines a first HARQ process amount according to the first HARQ process amount indication information when the transmission module does not transmit the second HARQ process amount indication information to the UE, and the determination 21. The base station according to any one of claims 18 to 20, configured to perform data transmission with the UE through the transmission module according to a first HARQ process amount that is made. The second HARQ process amount indication information transmitted by the transmission module includes the second HARQ process amount, and the processing module particularly includes the second HARQ process amount indication information included in the second HARQ process amount indication information. Configured to determine a process quantity as the second HARQ process quantity, or
The second HARQ process amount indication information transmitted by the transmission module includes a HARQ timing relationship, and the processing module particularly includes the second HARQ process amount indication information according to the HARQ timing relationship included in the second HARQ process amount indication information. Configured to determine HARQ process volume, or
The second HARQ process amount indication information transmitted by the transmission module includes subframe configuration information, and the processing module specifically includes the second HARQ process amount indication information according to the subframe configuration information included in the second HARQ process amount indication information. Configured to determine a HARQ process amount of 2, or
The second HARQ process quantity indication information transmitted by the transmission module includes dynamic reconfiguration validation information of time division duplex TDD subframe configuration, and the base station further includes the second HARQ process A storage module configured to store a predefined value for the quantity, wherein the processing module specifically according to the dynamic reconfiguration validation information of the TDD subframe configuration, the second Enabling dynamic reconfiguration of the TDD subframe configuration configured to determine a HARQ process quantity as the predefined value stored in the storage module or transmitted by the transmission module The information includes dynamic subframe configuration information, and the base station further supports the second HARQ process quantity and all supported A storage module configured to store an association with a typical subframe configuration, wherein the processing module is notably included in the dynamic reconfiguration validation information of the TDD subframe configuration. By searching for the association between the second HARQ process quantity and all supported dynamic subframe settings stored in the storage module in accordance with general subframe configuration information. Subframe configuration that is configured to determine the HARQ process amount of the TDD subframe configuration or the dynamic reconfiguration validation information of the TDD subframe configuration transmitted by the transmission module is actually used in the data transmission Including a combination of information, and the base station may further be used with the second HARQ process quantity. Including a storage module configured to store associations between all combinations of frame configuration information, wherein the processing module is used in particular in the data transmission and is dynamically used to dynamically reconfigure the TDD subframe configuration. All combinations of the second HARQ process amount and subframe configuration information that may be used, stored in the storage module, according to the combination of subframe configuration information included in configuration validation information Is configured to determine the second HARQ process amount by looking for the association between
Or
The second HARQ process amount indication information transmitted by the transmission module includes configuration information of aggregation of TDD carriers having different subframe configurations, and the second HARQ process amount indicates the secondary component carrier The configuration information of aggregation of TDD carriers having different subframe configurations, which is a HARQ process amount, includes a subframe configuration of a main component carrier and a subframe configuration of the secondary component carrier, and the secondary information A component carrier has the subframe configuration different from the main component carrier, and the processing module particularly according to the configuration information of aggregation of TDD carriers having a different subframe configuration. Configured to determine the HARQ process amount of the active component carrier as the predefined value stored in the storage module, wherein the base station further determines the second HARQ process amount with respect to the second HARQ process amount. The storage module configured to store the predefined value, or the processing module is configured to store the process quantity of the secondary component carrier in the subframe configuration of the primary component carrier. Or determining the HARQ process amount of the secondary component carrier as the HARQ process amount determined according to the subframe configuration of the primary component carrier. The secondary component Configured to determine the larger of the HARQ process quantities determined according to the subframe configuration of carriers, or to determine the HARQ process quantity of the secondary component carrier to the sub-component of the primary component carrier The HARQ process amount determined according to a frame configuration and the HARQ process amount determined according to the subframe configuration of the secondary component carrier are configured to be determined as a smaller one, or different subframe configurations Stored in the storage module according to the subframe configuration of the primary component carrier and the subframe configuration of the secondary component carrier included in the configuration information of the aggregation of the TDD carrier having Said association between said second HARQ process quantity and all supported combinations of said subframe configuration of said primary component carrier and said subframe configuration of said secondary component carrier The base station is further configured to determine the HARQ process amount of the secondary component carrier, wherein the base station further includes the second HARQ process amount and the primary component carrier of the primary component carrier. The storage module configured to store the association between a subframe configuration and all supported combinations of the subframe configurations of the secondary component carriers;
Or
The second HARQ process amount indication information transmitted by the transmission module includes FDD carrier and TDD carrier aggregation configuration information, and the second HARQ process amount is the HARQ process amount of the secondary component carrier. The configuration information of the aggregation of the FDD carrier and the TDD carrier includes a subframe configuration of the TDD carrier, and the processing module specifically includes the secondary component according to the configuration information of the aggregation of the FDD carrier and the TDD carrier. Configured to determine the HARQ process amount of a carrier as the pre-defined value stored in the storage module, wherein the base station further pre-defines the second HARQ process amount with respect to the second HARQ process amount. Before defined The storage module configured to store a value, or the processing module includes the HARQ process quantity of the secondary component carrier, the HARQ process quantity of the FDD carrier, and the TDD carrier of the TDD carrier. The HARQ process amount of the secondary component carrier is configured to be determined as a larger one of the HARQ process amounts determined according to the subframe configuration, or the HARQ process amount of the FDD carrier Configured to be determined as the smaller of the HARQ process quantities determined according to the subframe configuration of a TDD carrier, or when the secondary component carrier is the TDD carrier, the secondary In front of the component carrier If the HARQ process quantity is configured to be determined as the HARQ process quantity of the FDD carrier, and the secondary component carrier is the FDD carrier, the HARQ process quantity of the secondary component carrier is determined as the TDD. The base station according to any one of claims 18 to 21, wherein the base station is configured to determine the HARQ process amount determined according to the subframe configuration of a carrier. The subframe configuration information transmitted by the transmission module is one of the subframe configurations in the following table;

The base station according to claim 22, wherein D represents a downlink subframe, U represents an uplink subframe, and S represents a special subframe.   24. A base station according to claim 22 or 23, wherein the predefined value stored in the storage module is greater than or equal to eight.   The transmission module is particularly configured to transmit the first HARQ process amount indication information to the UE through a first system information block message, and the first HARQ process amount indication information is the first system. The base station according to claim 18 or 19, which is subframe configuration information in an information block message. A receiving module configured to receive first hybrid automatic repeat request HARQ process amount indication information transmitted by the base station;
When the receiving module further receives second HARQ process amount indication information transmitted by the base station, a second HARQ process amount is determined according to the second HARQ process amount indication information, and the determined And a processing module configured to perform data transmission with the base station through the receiving module based on a second HARQ process quantity. The second HARQ process amount determined by the processing module is a maximum number of downlink HARQ processes M _{DL_HARQ} or a maximum number of uplink HARQ processes M _{UL_HARQ} , and the processing module further includes a HARQ soft buffer _And divides the soft buffer according to the maximum number of downlink HARQ processes M _{DL_HARQ,} and performs data transmission with the base station according to the divided soft buffer and the second HARQ process amount. 27. The user equipment according to claim 26, configured as follows. In a carrier aggregation situation, the receiving module is particularly configured to receive the first HARQ process quantity indication information of the at least one component carrier transmitted by the base station for at least one component carrier. And when the second HARQ process amount indication information is further received, the second HARQ process amount indication information received by the receiving module is the second HARQ process amount indication of the at least one component carrier. Information,
When the processing module performs data transmission with the base station, performs data transmission with the base station on the at least one component carrier according to the second HARQ process amount;
The at least one component carrier enables a function of dynamic reconfiguration of a time division duplex TDD subframe configuration, or a secondary component having a subframe configuration different from the main component carrier 28. User equipment according to claim 26 or 27, wherein the user equipment is a carrier. The second HARQ process amount indication information received by the receiving module includes the second HARQ process amount, and the processing module particularly includes the second HARQ process amount indication information included in the second HARQ process amount indication information. Configured to determine a process quantity as the second HARQ process quantity, or
The second HARQ process amount indication information received by the receiving module includes a HARQ timing relationship, and the processing module, in particular, according to the HARQ timing relationship included in the second HARQ process amount indication information. Configured to determine HARQ process volume, or
The second HARQ process amount indication information received by the receiving module includes subframe configuration information, and the processing module specifically includes the second HARQ process amount indication information according to the subframe configuration information included in the second HARQ process amount indication information. Configured to determine a HARQ process amount of 2, or
The second HARQ process amount indication information received by the receiving module includes dynamic reconfiguration validation information of time division duplex TDD subframe configuration, and the user equipment further includes the second HARQ process A storage module configured to store a predefined value for the quantity, wherein the processing module specifically according to the dynamic reconfiguration validation information of the TDD subframe configuration, the second Enabling dynamic reconfiguration of the TDD subframe configuration configured to determine a HARQ process amount as the predefined value stored in the storage module or received by the receiving module Information includes dynamic subframe configuration information, and the user equipment further includes the second HARQ process amount and all support The storage module configured to store an association between the dynamic subframe configuration and the processing module in particular in the dynamic reconfiguration validation information of the TDD subframe configuration By searching for the correspondence between the second HARQ process quantity and all supported dynamic subframe settings stored in the storage module according to the dynamic subframe setting information included The TDD subframe configuration dynamic reconfiguration validation information configured to determine the second HARQ process amount or received by the receiving module is actually used in the data transmission. The user equipment is further used with the second HARQ process amount. Said storage module configured to store associations between all combinations of capable subframe configuration information, said processing module being used in particular in said data transmission and said TDD subframe The second HARQ process amount stored in the storage module and a subframe that may be used according to the combination of subframe configuration information included in configuration dynamic reconfiguration validation information Configured to determine the second HARQ process amount by looking for the association between all combinations of configuration information;
Or
The second HARQ process amount indication information received by the receiving module includes configuration information of aggregation of TDD carriers having different subframe configurations, and the second HARQ process amount includes the secondary component carrier The configuration information of aggregation of TDD carriers having different subframe configurations, which is a HARQ process amount, includes a subframe configuration of a main component carrier and a subframe configuration of the secondary component carrier, and the secondary information A component carrier has the subframe configuration different from the main component carrier, and the processing module particularly according to the configuration information of aggregation of TDD carriers having a different subframe configuration. Configured to determine the HARQ process amount of the active component carrier as the pre-defined value stored in the storage module, wherein the user equipment is further configured for the second HARQ process amount The storage module configured to store the predefined value, or the processing module is configured to store the process quantity of the secondary component carrier in the subframe configuration of the primary component carrier. Or determining the HARQ process amount of the secondary component carrier as the HARQ process amount determined according to the subframe configuration of the primary component carrier. The secondary component Or determining the HARQ process amount of the secondary component carrier as the main component carrier of the primary component carrier. The HARQ process amount determined according to a subframe configuration and the HARQ process amount determined according to the subframe configuration of the secondary component carrier are configured to be determined as a smaller one, or different subframes According to the subframe configuration of the main component carrier and the subframe configuration of the secondary component carrier included in the configuration information of the aggregation of the TDD carrier having the configuration, the storage module The correspondence between the stored second HARQ process quantity and all supported combinations of the subframe configuration of the primary component carrier and the subframe configuration of the secondary component carrier stored The user equipment is further configured to determine the HARQ process amount of the secondary component carrier by searching for a subscript, wherein the user equipment further includes the second HARQ process amount and the primary component carrier The storage module configured to store the association between the subframe configuration and all supported combinations of the subframe configurations of the secondary component carriers;
Or
The second HARQ process amount indication information received by the receiving module includes FDD carrier and TDD carrier aggregation configuration information, and the second HARQ process amount is the HARQ process amount of the secondary component carrier. The configuration information of the aggregation of the FDD carrier and the TDD carrier includes a subframe configuration of the TDD carrier, and the processing module specifically includes the secondary component according to the configuration information of the aggregation of the FDD carrier and the TDD carrier. Configured to determine the HARQ process amount of a carrier as the pre-defined value stored in the storage module, wherein the user equipment further pre-defines the second HARQ process amount Defined The storage module configured to store the value, or the processing module includes the HARQ process quantity of the secondary component carrier, the HARQ process quantity of the FDD carrier, and the TDD carrier of the TDD carrier. Configured to determine the larger of the HARQ process quantities determined according to the subframe configuration, or the HARQ process quantity of the secondary component carrier, and the HARQ process quantity of the FDD carrier, Configured to be determined as the smaller of the HARQ process quantities determined according to the subframe configuration of the TDD carrier, or if the secondary component carrier is the TDD carrier, the secondary Component carrier If the HARQ process amount is configured to be determined as the HARQ process amount of the FDD carrier, and the secondary component carrier is the FDD carrier, the HARQ process amount of the secondary component carrier is 29. The user equipment according to any one of claims 26 to 28, configured to determine as the HARQ process amount determined according to the subframe configuration of a TDD carrier. The subframe configuration information received by the receiving module is one of the subframe configurations in the following table;

30. The user equipment according to claim 29, wherein D represents a downlink subframe, U represents an uplink subframe, and S represents a special subframe.   31. User equipment according to claim 29 or 30, wherein the predefined value stored in the storage module is greater than or equal to 8 or equal to 4.   When the processing module further receives the second HARQ process amount indication information transmitted by the base station, the processing module further includes HARQ in downlink control information DCI according to the second HARQ process amount. 32. A user equipment according to any one of claims 26 to 31 configured to determine a process number field.   The processing module further determines a first HARQ process amount according to the first HARQ process amount indication information when the receiving module does not receive the second HARQ process amount indication information transmitted by the base station. 33. The user equipment according to any one of claims 26 to 32, configured to perform data transmission with the base station through the receiving module according to the determined first HARQ process amount.   The receiving module is specifically configured to receive the first HARQ process amount indication information transmitted by the base station through a first system information block message, wherein the first HARQ process amount indication information is The user apparatus according to claim 26 or 27, which is subframe configuration information in the first system information block message.

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