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已解决问题
[讨论]PUCCH procedure的理解
提问者：tiffanyli
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提问时间：2010-8-17 19:07
最近在看PUCCH procedure，有很多问题不理解，想请教下：
1. PUCCH格式1b，在ACK/NACK bundling下，是用于双码字的传输，PUCCH1a，则是用于单码字的传输，这样理解对吗？
2. 在ACK/NACK multiplexing下，由于是一种空间的bundling，这个时候的PUCCH格式1b，则既可以是双码字，也可以是单码字传输，对吗？如果一个PUCCH对应的是2个下行传输，则用PUCCH格式1a，如果大于2个小于4个，则用PUCCH格式1b。这也是为什么DL-UL配置5只能用于bundling而不能multiplexing的原因？
3.the number of the first CCE used for transmission of the corresponding PDCCH in subframe n-km,是不是因为PDCCH的复用，不同PDCCH对应于不同的传输，而这里需要找出对应与本次PDSCH传输对应的PDCCH CCE的号码？
4. 我上次讲的图就是TS36.213的10.1-2~10.1-4，这几个图分别是transmission of ACK/NACK multiplexing for M=2,M-3,M=4。这些图是不是主要就是为了根据n1_PUCCH_i的i值，以及Np，n_CCE等参数计算n1_PUCCH？HARQ-ACK(0)/HARQ(1)则就是PUCCH格式对应的内容？
5. n1_PUCCH协议中说是指示用于PUCCH格式1/1a/1b的传输资源，这里的传输资源如何理解？表示传输资源块的数目？
6. Channel selection 如何理解？
Qestion 3, it just indicates that PUCCH resource for HARQ-ACK to dynamis scheduling isimplicitly determined by the first CCE number.
The logical behind is that, n1-PUCCH signalled by RRC indicates the PUCCH resources reserved for SR or semi-presistent scheduling, and the rest PUCCH resouces can be used for HARQ-ACK to dynamic scheduling, that maximum number of the PUCCH resources for this purpose is the maximum CCE number.
In total, the frequency layout for PUCCH shall like the following:
1.region for PUCCH 2/2a/2b (indicated by n2-pucch)
2.region for mixed PUCCH 1/1a/1b and PUCCH 2/2a/2b (indicated by n1-cs)
3.region for PUCCH positive SR (indicated by n1-pucch)
4.region for PUCCH HARQ-ACK or HARQ-ACK together with negtive SR
The logical behind is that, n1-PUCCH signalled by RRC indicates the PUCCH resources reserved for SR or semi-presistent scheduling, and the rest PUCCH resouces can be used for HARQ-ACK to dynamic scheduling, that maximum number of the PUCCH resources for this purpose is the maximum CCE number.
In total, the frequency layout for PUCCH shall like the following:
1.region for PUCCH 2/2a/2b (indicated by n2-pucch)
2.region for mixed PUCCH 1/1a/1b and PUCCH 2/2a/2b (indicated by n1-cs)
3.region for PUCCH positive SR (indicated by n1-pucch)
4.region for PUCCH HARQ-ACK or HARQ-ACK together with negtive SR
回答时间：2012-6-13 21:31
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