# US 2008/0186880 A1 · Wireless communication system and wireless communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0186880 A1 - Document ID: US20080186880A1 - Status: Published application - Kind: A1 - Application number: 12/010,848 - Filed: 2008-01-30 - Published: 2008-08-07 - Earliest claimed: 2007-02-06 - Assignees: Fujitsu Limited; Ntt Docomo, Inc. - Inventors: Hiroyuki Seki; Dai Kimura; Tsuyoshi Shimomura; Hiroyuki Ishii; Yoshihisa Kishiyama; Kenichi Higuchi; Sadayuki Abeta - Web page: https://patentgrep.com/patent/US20080186880A1 ## CPC - H04W 72/54: based on quality criteria - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present invention is a wireless communication system having a mobile station and a wireless base station, wherein the wireless base station further having a scheduling processing unit which divides system bandwidth into a plurality of wireless resource blocks in a frequency domain, performs scheduling so that other channels are not assigned to the wireless resource blocks which are adjacent to a first channel when the first channel whose frequency characteristic is not orthogonal to the other channels is assigned to a certain wireless resource block resulting from the division, and creates scheduling information on the scheduling that is performed; and a transmission unit which transmits the scheduling information created by the scheduling processing unit to the mobile station, and the mobile station transmits a channel signal to the wireless base station on the basis of the scheduling information and the wireless base station receives the channel signal transmitted from the mobile station. ## Claims ### Claim 1 A wireless communication system comprising: a mobile station; and a wireless base station, wherein the wireless base station further comprising a scheduling processing unit which divides system bandwidth into a plurality of wireless resource blocks in a frequency domain, performs scheduling so that other channels are not assigned to the wireless resource blocks which are adjacent to a first channel when the first channel whose frequency characteristic is not orthogonal to the other channels is assigned to a certain wireless resource block resulting from the division, and creates scheduling information on the scheduling that is performed; and a transmission unit which transmits the scheduling information created by the scheduling processing unit to the mobile station, and the mobile station transmits a channel signal to the wireless base station on the basis of the scheduling information and the wireless base station receives the channel signal transmitted from the mobile station. ### Claim 2 (depends on 1) The wireless communication system according to claim 1, wherein the first channel is a random access channel. ### Claim 3 (depends on 1) The wireless communication system according to claim 1, wherein the scheduling processing unit performs scheduling so that the channels which have a transmission rate equal to or more than a threshold value are not assigned to the wireless resource blocks which are adjacent to the first channel. ### Claim 4 (depends on 3) The wireless communication system according to claim 3, wherein the transmission rate is a value that is calculated from a modulation order and a coding rate on the basis of the channel information transmitted from the mobile station. ### Claim 5 (depends on 1) The wireless communication system according to claim 1, wherein the scheduling processing unit performs scheduling so that the channels which have a transmission rate equal to or less than a threshold value are not assigned to the wireless resource blocks which are adjacent to the first channel, when the base station is performing transmission power control with respect to the mobile station. ### Claim 6 (depends on 1) The wireless communication system according to claim 1, wherein the scheduling processing unit performs scheduling so that the channels which require a low delay characteristic are not assigned to the wireless resource blocks which are adjacent to the first channel. ### Claim 7 (depends on 6) The wireless communication system according to claim 6, wherein the channels which require the low delay characteristic are packet data for real-time services including sound or games. ### Claim 8 (depends on 1) The wireless communication system according to claim 1, wherein the scheduling processing unit performs scheduling so that channels of a narrow bandwidth are not assigned to the wireless resource blocks which are adjacent to the first channel. ### Claim 9 (depends on 8) The wireless communication system according to claim 8, wherein the scheduling processing unit performs scheduling so that the channels of the narrow bandwidth are not assigned by ensuring that the wireless resource blocks which are adjacent to the first channel are not assigned when the proportion of the wireless resource blocks which are adjacent to the first channel among the assigned wireless resource blocks is equal to or more than a threshold value. ### Claim 10 A wireless communication method in a wireless communication system having a mobile station and a wireless base station, comprising the steps of: dividing system bandwidth into a plurality of wireless resource blocks in a frequency domain, scheduling so that other channels are not assigned to the wireless resource blocks which are adjacent to a first channel when the first channel whose frequency characteristic is not orthogonal to the other channels is assigned to a certain wireless resource block resulting from the division, and creating scheduling information on the scheduling that is performed, by the wireless base station; transmitting the scheduling information to the mobile station, by the wireless base station; and transmitting a channel signal to the wireless base station on the basis of the scheduling information by the mobile station and receiving the channel signal transmitted from the mobile station by the wireless base station.