# US 10,375,715 B2 · Electronic device and method for scheduling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,375,715 B2 - Document ID: US10375715B2 - Status: Granted - Kind: B2 - Application number: 15/903,540 - Filed: 2018-02-23 - Published: 2018-08-23 - Granted: 2019-08-06 - Earliest claimed: 2017-02-23 - Assignees: Samsung Electronics Co., Ltd.; The Regents of the University of California - Applicants: Samsung Electronics Co., Ltd. - Inventors: Seok-Ki Ahn; Kwang-Taik Kim; Young-Han Kim; Yong-Seok Kim; Chi-Woo Lim - Web page: https://patentgrep.com/patent/US10375715B2 ## CPC - H04W 72/542: using measured or perceived quality - H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems - H04B 7/0854: {using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion} - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/187: {Details of sliding window management} - H04W 24/02: Arrangements for optimising operational condition - H04B 7/02: Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas (RAKE receivers H04B1/7115) - H04L 1/0042: {Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape (H04L1/0067 takes precedence)} - H04L 1/0047: {Decoding adapted to other signal detection operation (in conjunction with sequence estimation or equalization H04L25/03286)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for performing scheduling by a first base station over a wireless communication network, and an apparatus therfor are provided. The method includes receiving first channel status information (CSI) measured by at least one user equipment (UE) positioned in coverage of the first base station and second CSI, determining a first transmission rate for any one of the at least one UE positioned in the coverage of the first base station and a second transmission rate for any one of the at least one UE positioned in the coverage of the second base station, determining a third transmission rate for a first UE among the at least one UE positioned in the coverage of the first base station and a fourth transmission rate for a second UE among the at least one UE positioned in the coverage of the second base station, and performing scheduling. ## Claims ### Claim 1 A method for performing scheduling by a first base station over a wireless communication network including the first base station and a second base station, the method comprising: receiving first channel status information (CSI) measured by at least one user equipment (UE) positioned in coverage of the first base station and second CSI measured by at least one UE positioned in coverage of the second base station; determining a first transmission rate for any one of the at least one UE positioned in the coverage of the first base station and a second transmission rate for any one of the at least one UE positioned in the coverage of the second base station, when data coding for interference cancellation is not used, based on the first CSI and the second CSI; determining a third transmission rate for a first UE among the at least one UE positioned in the coverage of the first base station and a fourth transmission rate for a second UE among the at least one UE positioned in the coverage of the second base station, when the data coding for interference cancellation is used, based on the first CSI and the second CSI; and performing scheduling to allow the first UE to use the data coding for the interference cancellation based on the first transmission rate through the fourth transmission rate, wherein, when the sum of the first transmission rate and the second transmission rate is smaller than the sum of the third transmission rate and the fourth transmission rate, the scheduling is performed so that the first UE uses the data coding for the interference cancellation. ### Claim 2 (depends on 1) The method of claim 1, wherein the sum of the first transmission rate and the second transmission rate is larger than the sum of a transmission rate for any one of the at least one UE positioned in the coverage of the first base station when the data coding for the interference cancellation is used and a transmission rate for any one of the at least one UE positioned in the second coverage when the data coding for the interference cancellation is used. ### Claim 3 (depends on 1) The method of claim 1, wherein the coverage of the first base station and the coverage of the second base station include more than a preset number of UEs that are influenced with a preset value of interference strength or more. ### Claim 4 (depends on 1) The method of claim 1, wherein the first UE is influenced with a preset interference strength or more by the second base station, and wherein the second UE is influenced with less than the preset interference strength by the first base station. ### Claim 5 (depends on 1) The method of claim 1, wherein the data coding for the interference cancellation is coding that sequentially superposes a data code transmitted from the first base station to the first UE and a data code transmitted from the second base station to the first UE. ### Claim 6 (depends on 1) The method of claim 1, wherein the data coding for the interference cancellation is sliding window superposition coding (SWSC). ### Claim 7 A first base station performing scheduling over a wireless communication network including the first base station and a second base station, the first base station comprising: a receiver for receiving first channel status information (CSI) measured by at least one user equipment (UE) positioned in coverage of the first base station and second CSI measured by at least one UE positioned in coverage of the second base station; and at least one processor configured to: determine a first transmission rate for any one of the at least one UE positioned in the coverage of the first base station and a second transmission rate for any one of the at least one UE positioned in the coverage of the second base station, when data coding for interference cancellation is not used, based on the first CSI and the second CSI, determine a third transmission rate for a first UE among the at least one UE positioned in the coverage of the first base station and a fourth transmission rate for a second UE among the at least one UE positioned in the coverage of the second base station, when the data coding for interference cancellation is used, based on the first CSI and the second CSI, and perform scheduling to allow the first UE to use the data coding for the interference cancellation based on the first transmission rate through the fourth transmission rate, wherein, when the sum of the first transmission rate and the second transmission rate is smaller than the sum of the third transmission rate and the fourth transmission rate, the at least one processor is further configured to perform the scheduling so that the first UE uses the data coding for the interference cancellation. ### Claim 8 (depends on 7) The first base station of claim 7, wherein the sum of the first transmission rate and the second transmission rate is larger than the sum of a transmission rate for any one of the at least one UE positioned in the coverage of the first base station when the data coding for the interference cancellation is used and a transmission rate for any one of the at least one UE positioned in the second coverage when the data coding for the interference cancellation is used. ### Claim 9 (depends on 7) The first base station of claim 7, wherein the coverage of the first base station and the coverage of the second base station include more than a preset number of UEs that are influenced with a preset value of interference strength or more. ### Claim 10 (depends on 7) The first base station of claim 7, wherein the first UE is influenced with a preset interference strength or more by the second base station, and wherein the second UE is influenced with less than the preset interference strength by the first base station. ### Claim 11 (depends on 7) The first base station of claim 7, wherein the data coding for the interference cancellation comprises coding that sequentially superposes a data code transmitted from the first base station to the first UE and a data code transmitted from the second base station to the first UE. ### Claim 12 (depends on 7) The first base station of claim 7, wherein the data coding for the interference cancellation comprises sliding window superposition coding (SWSC). ### Claim 13 A core unit controlling a first base station and a second base station, the core unit comprising: a receiver for receiving first channel status information (CSI) measured by at least one user equipment (UE) positioned in coverage of the first base station and second CSI measured by at least one UE positioned in coverage of the second base station; and at least one processor configured to: determine a first transmission rate for any one of the at least one UE positioned in the coverage of the first base station and a second transmission rate for any one of the at least one UE positioned in the coverage of the second base station, when data coding for interference cancellation is not used, based on the first CSI and the second CSI, determine a third transmission rate for a first UE among the at least one UE positioned in the coverage of the first base station and a fourth transmission rate for a second UE among the at least one UE positioned in the coverage of the second base station, when the data coding for interference cancellation is used, based on the first CSI and the second CSI, and control the first base station and the second base station to allow the first UE and the second UE to use the data coding for the interference cancellation based on the first transmission rate through the fourth transmission rate, wherein, when the sum of the first transmission rate and the second transmission rate is smaller than the sum of the third transmission rate and the fourth transmission rate, the at least one processor is further configured to perform the control so that the first UE and the second UE use the data coding for the interference cancellation. ### Claim 14 (depends on 13) The core unit of claim 13, wherein the sum of the first transmission rate and the second transmission rate is larger than the sum of a transmission rate for any one of the at least one UE positioned in the coverage of the first base station when the data coding for the interference cancellation is used and a transmission rate for any one of the at least one UE positioned in the second coverage when the data coding for the interference cancellation is used. ### Claim 15 (depends on 13) The core unit of claim 13, wherein the coverage of the first base station and the coverage of the second base station include more than a preset number of UEs that are influenced with a preset value of interference strength or more. ### Claim 16 (depends on 13) The core unit of claim 13, wherein the first UE is influenced with a preset interference strength or more by the second base station, and wherein the second UE is influenced with less than the preset interference strength by the first base station. ### Claim 17 (depends on 13) The core unit of claim 13, wherein the data coding for the interference cancellation comprises coding that sequentially superposes a data code transmitted from the first base station to the first UE and a data code transmitted from the second base station to the first UE.