# US 8,787,273 B2 · Base station apparatus and communication control method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,787,273 B2 - Document ID: US8787273B2 - Status: Granted - Kind: B2 - Application number: 13/058,445 - Filed: 2009-08-11 - Published: 2011-08-04 - Granted: 2014-07-22 - Earliest claimed: 2008-08-11 - Assignees: Ntt Docomo, Inc. - Applicants: Hiroyuki Ishii - Inventors: Hiroyuki Ishii - Web page: https://patentgrep.com/patent/US8787273B2 ## CPC - H04W 72/04: Wireless resource allocation - H04W 72/20: Control channels or signalling for resource management - H04L 1/1854: {Scheduling and prioritising arrangements} - H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract To avoid a collision between transmission timing of a data signal by SPS and transmission timing of an uplink control signal or a sounding reference signal, the base station apparatus has a DRX On-duration setting processing section configured to set reception duration of DRX control so as to minimize the total resource usage amount in the reception duration of DRX, and a control signal resource allocation section that allocates radio resources for a first signal in uplink for user equipment to transmit during On-duration of discontinuous reception to within predetermined time duration from the beginning of the ON-duration of discontinuous reception. The control signal resource allocation section allocates radio resources for an uplink control signal of CQI, scheduling request, etc. or sounding reference signal to the time duration (4 ms) between PDCCH for SPS and SPS PUSCH from the beginning of the reception duration of DRX control. ## Claims ### Claim 1 A base station apparatus comprising: a setting section configured to set On-duration of discontinuous reception on a user equipment performing discontinuous reception control; an allocating section configured to allocate radio resources for a first signal in uplink for the user equipment to transmit during the On-duration of discontinuous reception to within first predetermined time duration from the beginning of the ON-duration of discontinuous reception; and wherein the first predetermined time duration to which are allocated the radio resources for the first signal in uplink is time duration between reception in downlink of a control signal to allocate radio resources for a second signal in uplink and transmission in uplink of the second signal in the user equipment. ### Claim 2 (depends on 1) The base station apparatus according to claim 1, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 3 (depends on 1) The base station apparatus according to claim 1, wherein the setting section sets the On-duration of discontinuous reception so as to minimize the total resource usage amount of time frames within the On-duration of discontinuous reception. ### Claim 4 (depends on 1) The base station apparatus according to claim 1, wherein the setting section sets the On-duration of discontinuous reception so as to equalize the number of user equipments under time duration to measure reception quality per time frame. ### Claim 5 (depends on 1) The base station apparatus according to claim 1, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 6 (depends on 1) The base station apparatus according to claim 1, wherein the first predetermined time duration to which the radio resources for the first signal in uplink are allocated is time duration between reception in downlink of a downlink data signal and transmission in uplink of acknowledgement information for the downlink data signal in the user equipment. ### Claim 7 (depends on 6) The base station apparatus according to claim 6, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 8 (depends on 1) The base station apparatus according to claim 1, wherein the second signal in uplink is an uplink data signal. ### Claim 9 (depends on 8) The base station apparatus according to claim 8, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 10 (depends on 1) The base station apparatus according to claim 1, wherein the allocating section allocates the radio resources for the first signal in uplink for the user equipment to transmit during the ON-duration of discontinuous reception to time duration except second time duration within the first predetermined time duration. ### Claim 11 (depends on 10) The base station apparatus according to claim 10, wherein the second time duration is determined based on time duration required to calculate the first signal in uplink. ### Claim 12 (depends on 10) The base station apparatus according to claim 10, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 13 (depends on 11) The base station apparatus according to claim 11, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 14 (depends on 1) The base station apparatus according to claim 1, wherein the first signal in uplink is at least one of radio quality information of downlink, scheduling request and a sounding reference signal. ### Claim 15 (depends on 14) The base station apparatus according to claim 14, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 16 (depends on 14) The base station apparatus according to claim 14, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 17 (depends on 14) The base station apparatus according to claim 14, wherein the first predetermined time duration to which the radio resources for the first signal in uplink are allocated is time duration between reception in downlink of a downlink data signal and transmission in uplink of acknowledgement information for the downlink data signal in the user equipment. ### Claim 18 (depends on 17) The base station apparatus according to claim 17, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 19 (depends on 14) The base station apparatus according to claim 14, wherein the allocating section allocates the radio resources for the first signal in uplink for the user equipment to transmit during the ON-duration of discontinuous reception to time duration except second time duration within the first predetermined time duration. ### Claim 20 (depends on 19) The base station apparatus according to claim 19, wherein the second time duration is determined based on time duration required to calculate the first signal in uplink. ### Claim 21 (depends on 19) The base station apparatus according to claim 19, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 22 (depends on 20) The base station apparatus according to claim 20, wherein the setting section sets the On-duration of discontinuous reception based on a resource usage amount in each time frame. ### Claim 23 A communication control method comprising: setting On-duration of discontinuous reception on a user equipment performing discontinuous reception control; allocating radio resources for a first signal in uplink for the user equipment to transmit during the On-duration of discontinuous reception to within predetermined time duration from the beginning of the ON-duration of discontinuous reception; and wherein the first predetermined time duration to which are allocated the radio resources for the first signal in uplink is time duration between reception in downlink of a control signal to allocate radio resources for a second signal in uplink and transmission in uplink of the second signal in the user equipment.