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Effect test
Embodiment 1
[0077] When the cyclic prefix is a regular cyclic prefix, the orthogonal codes are {1, 1, 1, 1}, {1, -1, 1, -1}, {1, 1, -1, -1} and {1, -1, -1, 1}, the sequence number of the orthogonal code is (#0, #1, #2, #3). Assume that there are 16 PHICHs (#0, #1, ..., #15) in the current system, which are divided into two PHICH groups (#0, #1), then the PHICH group number corresponding to the i-th PHICH is p, in The corresponding PHICH sequence number in PHICH group p is r, and the specific mapping is as follows figure 1 Shown, where p=i mod M; r=floor(i / M);
[0078] When i=0, p=0 mod 2=0, r=floor(0 / 2)=0;
[0079] When i=1, p=1 mod 2=1, r=floor(1 / 2)=0;
[0080] When i=2, p=2 mod 2=0, r=floor(2 / 2)=1;
[0081] ...
[0082] When i=15, p=15 mod 2=1, r=floor(15 / 2)=7
[0083] The mapping relationship of the I channel / Q channel and the orthogonal code corresponding to the PHICH sequence number r in each PHICH group is performed in the order shown in Table 1, that is, when the number of ...
Embodiment 2
[0085] When the cyclic prefix is an extended cyclic prefix, the orthogonal codes are {1, 1} and {1, -1}, and the sequence numbers of the orthogonal codes are (#0, #1), assuming that there are 16 PHICHs in the current system ( #0, #1,..., #15), two PHICH groups (#0, #1), then the PHICH group sequence number corresponding to the i-th PHICH is p, and the corresponding sequence number in the PHICH group p is r, Specific mapping such as image 3 Shown, where p=i modM; r=floor(i / M);
[0086] When i=0, p=0 mod 2=0, r=floor(0 / 2)=0;
[0087] When i=1, p=1 mod 2=1, r=floor(1 / 2)=0;
[0088] When i=2, p=2 mod 2=0, r=floor(2 / 2)=1;
[0089] ...
[0090] When i=15, p=15 mod 2=1, r=floor(15 / 2)=7
[0091] The mapping relationship of the I channel / Q channel and the orthogonal code corresponding to the PHICH sequence number r in each PHICH group is performed in the order shown in Table 2, that is, when the number of PHICHs is less than or equal to 4, it is assigned two PHICH groups. Diff...
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Abstract
The invention relates to a method for distributing physical mixed retransmitted indicated communication channel resources, which comprises following steps: evenly dividing all physical mixed retransmitted indicated communication channels PHICH of resources which will be distributed to a plurality of arranged PHICH groups by a sending end, distributing different orthogonal codes to different I / Q positions under different PHICH groups for PHICH or distributing different orthogonal codes to different I / Q positions under different PHICH groups or under different PHICH sub groups for the PHICH. The invention gives out a concrete solving scheme between PHICH and the PHICH groups and between the orthogonal codes and an I / Q path, which not only realizes the HARQ functions in an actual system but also guarantees that the interval distance between the PHICH in a PHICH group is maximum, and thereby the interference between PHICH signals in the same PHICH group is minimized.
Description
technical field [0001] The invention relates to a method for allocating physical channel resources in a mobile communication system, in particular to a method for allocating physical hybridretransmission indication channel resources in a broadbandwirelesssystem. Background technique [0002] The rapid development of digital communication systems has put forward higher requirements for the reliability of data communication. However, in harsh channel environments, especially in high data rate or high-speed mobile environments, serious multipath interference and Doppler shift affect system performance. Therefore, effective error control technology, especially HybridAutomatic Repeat Request (HARQ, HybridAutomatic Repeat Request) technology has become a research hotspot in the communication field. [0003] In the HARQ mode, the code sent by the originating end can not only detect errors, but also have certain error correction capabilities. After receiving the codeword, the...
Claims
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