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A technology of resource allocation and virtual resource blocks, applied in the field of resource allocation of physical downlink control channels, can solve problems such as interference, and achieve the effect of simple implementation and low interference
Inactive Publication Date: 2008-08-27
ZTE CORP
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Because there is a greater possibility of interference between mobile terminals of adjacent control channel units, if the same time-domain orthogonal ...
Method used
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application example 1
[0082] Assume, under regular cyclic prefixes, that N CCE =36,N ACK =36, c=2, then, according to the mapping relationship given by the present invention, the index of the control channel unit where the downlink data-related control signaling is located and the physical uplink control channel that sends the corresponding ACK / NACK control signaling are established. The mapping relationship between indexes, such as figure 1 Shown:
[0083] Specifically, assuming that the CCE index i=0, according to the formula (1) of the present invention, the calculated index of the virtual resource block where the corresponding ACK / NACK channel is located is:
[0084]
[0085] The ACK / NACK channel code index is:
[0086] j=mod((i+1)×c, N ACK +1)-1
[0087] =mod(2,37)-1
[0088] = 1
[0089] Depend on figure 1 The corresponding relationship between the ACK / NACK channel and the cyclic shift amount and the time-domain spreading code in the upper part of the above shows that for the ACK...
application example 2
[0096] Assume, under regular cyclic prefixes, that N CCE =18,N ACK =18, c=2, then, according to the mapping relationship given by the present invention, the minimum index of the control channel unit where the downlink data-related control signaling is located and the physical uplink control channel for sending the corresponding ACK / NACK control signaling are established. The mapping relationship between the indexes, such as figure 2 shown.
application example 3
[0098] Assume, under regular cyclic prefixes, that N CCE =18,N ACK =18, c=3, then, according to the mapping relationship given by the present invention, the minimum index of the control channel unit where the downlink data-related control signaling is located and the physical uplink control channel for sending the corresponding ACK / NACK control signaling are established. The mapping relationship between the indexes, such as image 3 shown.
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Abstract
The invention relates to a resource allocation method. A base station utilizes a control channel unit of a physical downlink control channel to transmit control signaling related to the downstream data to a mobile terminal; after the mobile terminal receives the control signaling, the mobile terminal obtains virtual resource block index mapped by the corresponding physical uplink response control channel, and physical uplink reply control channel index which is determined by mapped circulating motion amount index and time domain orthogonal code index in the virtual resource block according to the index of the control channel unit, and the set mapping method; the mobile terminal returns positive/negative acknowledgement control signaling on the physical uplink response control channel to the base station; when the set mapping method ensures the physical uplink response control channel corresponding to adjacent control channel unit indexes to be mapped to an identical virtual resource block, the mapped time domain orthogonal code indexes are different or identical, but the circulating motion amount indexes are not adjacent, therefore the interference between the physical uplink response control channels corresponding to the adjacent control channel units is minimized.
Description
technical field [0001] The present invention relates to a resource allocation method in the communication field, in particular, to a resource allocation method for a Physical Uplink Control Channel (PUCCH) for sending positive / negative acknowledgment control signaling, and a physical uplink control channel (PUCCH) resource allocation method. A resource allocation method for a downlink control channel. Background technique [0002] In the HARQ (Hybrid Automatic Repeat Request, Hybrid Automatic Repeat Request) 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 decoder at the receiving end first checks the error situation, and if it is within the error correction capability of the code, it will automatically correct the error; The receiving end sends a decision signal to the sending end through the feedback channel, requesting the sending end to resend the information. I...
Claims
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