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Integrated circuit for controlling generation, transmission and reception of resource allocation information, and data allocation based on the resource allocation information

專利號(hào)
US10057886B2
公開日期
2018-08-21
申請(qǐng)人
Sun Patent Trust(US NY New York)
發(fā)明人
Takashi Iwai; Daichi Imamura; Akihiko Nishio; Yoshihiko Ogawa; Shinsuke Takaoka
IPC分類
H04W72/04; H04L5/00; H04W28/06
技術(shù)領(lǐng)域
rbg,allocation,section,index,nrb,resource,frequency,indices,equation,terminal
地域: NY NY New York

摘要

Provided are a radio transmission apparatus and a radio transmission method whereby the increase of number of signaling bits can be suppressed and further the flexibility of frequency scheduling can be improved. A notified RBG calculating unit (203) that adds a predetermined offset value of “1” or “?1” to one of the start RBG number and the end RBG number of allocated RBG number information (b′i) output by a scheduling unit (201), thereby calculating notified RBG number information (bi). An RBG total number setting unit (204) calculates the total number of RBGs, which is to be notified, by adding “1” to the total number of allocated RBGs. A notified information generating unit (205) applies the notified RBG number information (bi) and the notified total number of RBGs (Nrb′) to a predetermined formula, thereby generating and transmitting, to terminals, notified information (r).

說明書

BACKGROUND

Technical Field

The present invention relates to a radio communication apparatus for reporting a frequency resource allocation and a method of reporting an allocation resource, and a radio communication apparatus for receiving a notification of an allocated frequency resource and a method of allocating data.

Description of the Related Art

Studies are underway to apply a non-contiguous band transmission in addition to a contiguous band transmission to an uplink of LTE-Advanced, which is the development product of 3rd Generation Partnership Project Long Term Evolution (3GPP LTE), in order to improve sector throughput.

As shown in FIG. 1A, the contiguous band transmission is a technique used to allocate a transmission signal of one terminal to the contiguous frequency band. Meanwhile, as shown in FIG. 1B, the non-contiguous band transmission is a technique used to allocate a transmission signal of one terminal to non-contiguous frequency bands. Compared to the contiguous band transmission, the non-contiguous band transmission enhances flexibility of allocating the transmission signal of each terminal to the frequency band, and thus may obtain a larger frequency scheduling effect.

In LTE-Advanced, limiting the maximum number of clusters (i.e., contiguous band block or a unit) in the non-contiguous bands to two has been studied, in order to decrease the number of signaling bits of frequency resource allocating information that is reported from a base station to a terminal.

權(quán)利要求

1
The invention claimed is:1. A communication apparatus comprising:a receiver which, in operation, receives resource allocation information that indicates at least two clusters of resource blocks allocated by a base station apparatus, each cluster including one or more consecutive resource block groups (RBGs), wherein the at least two clusters are located on frequency positions separated from each other, and wherein the resource allocation information includes a combinatorial index that is calculated by using: a starting RBG index (s1) of a first cluster; an index (e1) obtained by adding one to an ending RBG index of the first cluster; a starting RBG index (s2) of a second cluster; an index (e2) obtained by adding one to an ending RBG index of the second cluster; and a number N that is obtained by adding one to a total number of RBGs included in an uplink system bandwidth; anda transmitter which, in operation, transmits data using the at least two clusters based on the resource allocation information.2. The communication apparatus according to claim 1 wherein, when the starting RBG index equals its corresponding ending RBG index, a single RBG is allocated for a cluster with the starting RBG index.3. The terminal apparatus according to claim 1, wherein the combinatorial index is generated based on the following formula: i = 0 2 ? M - 1 ? ? N - b i 2 ? M - i ? , ? b i = { s 1 , e 1 , s 2 , e 2 } , ? s 1 < e 1 < s 2 < e 2 in which M represents the number of clusters allocated in the uplink and is 2, and N represents the number obtained by adding one to the total number of RBGs included in the uplink system bandwidth.4. The communication apparatus according to claim 1, whereina first number of signaling bits are required for the resource allocation information when one is added to the total number of RBGs included in the uplink system bandwidth,a second number of signaling bits are required for the resource allocation information when one is not added to the total number of RBGs included in the uplink system bandwidth, andone is added to the total number of RBGs included in the uplink system bandwidth to obtain the number N used in calculatioin of the combinational index only when the first number is equal to or less than the second number.5. The communication apparatus according to claim 4, wherein when the first number is equal to or greater than the second number, the combinatorial index is calculated by using the total number of RBGs included in the uplink system bandwidth without adding one to it.6. A communication method comprising:receiving resource allocation information indicating at least two clusters of resource blocks allocated by a base station apparatus, each cluster including one or more consecutive resource block groups (RBGs), wherein the at least two clusters are located on frequency positions separated from each other, and wherein the resource allocation information includes a combinatorial index that is calculated by using: a starting RBG index (s1) of a first cluster; an index (e1) obtained by adding one to an ending RBG index of the first cluster; a starting RBG index (s2) of a second cluster; an index (e2) obtained by adding one to an ending RBG index of the second cluster; and a number N that is obtained by adding one to a total number of RBGs included in an uplink system bandwidth; andtransmitting data using at least two clusters based on the resource allocation information.7. The communication method according to claim 6 wherein, when the starting RBG index equals its corresponding ending RBG index, a single RBG is allocated for a cluster with the starting RBG index.8. The communication method according to claim 6, wherein the combinatorial index is generated based on the following formula: i = 0 2 ? M - 1 ? ? N - b i 2 ? M - i ? , ? b i = { s 1 , e 1 , s 2 , e 2 } , ? s 1 < e 1 < s 2 < e 2 in which M represents the number of clusters allocated in the uplink and is 2, and N represents the number obtained by adding one to the total number of RBGs included in the uplink system bandwidth.9. The communication method according to claim 6, whereina first number of signaling bits are required for the resource allocation information when one is added to the total number of RBGs included in the uplink system bandwidth,a second number of signaling bits are required for the resource allocation information when one is not added to the total number of RBGs included in the uplink system bandwidth, andone is added to the total number of RBGs included in the uplink system bandwidth to obtain the number N used in calculatioin of the combinational index only when the first number is equal to or less than the second number.10. The communication method according to claim 8, wherein when the first number is equal to or greater than the second number, the combinatorial index is calculated by using the total number of RBGs included in the uplink system bandwidth without adding one to it.
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