Method of operating an HARQ buffer for a dynamic sub-frame change and an apparatus for same
A soft buffer, subframe configuration technology, applied in receiver-dedicated devices, link quality-based transmission modification, transmission path subchannel allocation, etc.
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no. 1 example
[0080] The first embodiment of the invention proposes the Figure 9 Fixed soft buffer splitting scheme in the state.
[0081] In more detail, although a new UL-DL configuration is reconfigured, the maximum number of soft buffers for the DL HARQ process and the DL HARQ process are operated based on the UL-DL configuration of the previously received system information block (SIB) information split method. In other words, even in the case of a new UL-DL configuration whose number of DL subframes is larger than that of an existing UL-DL configuration, the soft buffer size for each DL HARQ process and the DL HARQ process The maximum number is equally maintained as the case based on SIB information. In this case, although the problem occurs because the soft buffer is insufficient, this problem can be solved by the application of the common soft buffer.
[0082] Furthermore, considering the impact on legacy user equipment UE that occurs if a new UL-DL configuration is reconfigured...
no. 2 example
[0088] A second embodiment of the invention proposes the Figure 9 A dynamic soft buffer partitioning scheme in the state of .
[0089] In more detail, when a new UL-DL configuration is reconfigured, a soft buffer partition method for a DL HARQ process and a maximum number of DL HARQ processes are operated based on a previously received UL-DL configuration. In other words, if the user equipment UE is allocated from the eNB, the number of DL subframes through it is larger than the number of DL subframes of the existing SIB-based UL-DL configuration (i.e., the maximum number of DLHARQ processes = K_MAX_SIB for each DL Soft buffer size of HARQ processes = S_total / K_MAX_SIB) and the maximum number of HARQ processes is the new UL-DL configuration of K_MAX_RECONFIG, the maximum number of DL HARQ processes after the new UL_DL configuration is applied and with The soft buffer size for each DL HARQ process becomes K_MAX_RECONFIG and S_total / K_MAX_RECONFIG respectively.
[0090] In ad...
no. 3 example
[0097] When a new UL-DL configuration is additionally reconfigured, the maximum number of DL HARQ processes that actually operate follows the UL-DL configuration of the previously received SIB information, and the soft buffer partition method for DL HARQ processes can consider using the new The maximum number of DL HARQ processes for the received UL-DL configuration.
[0098] When considering the impact on the legacy user equipment UE, the number of DL subframes and the maximum number of DL HARQ processes of the newly received UL-DL configuration are generally larger than the number of SIB information based on the UL-DL configuration. Therefore, if the soft buffer size for each DL HARQ process is configured using the maximum number of DL HARQ processes of the newly received UL-DL configuration, compared with the size of the UL-DL configuration based on SIB information, relatively The soft buffer size for each DL HARQ process is reduced more.
[0099] However, the maximum nu...
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