# US 9,521,689 B2 · Method and apparatus for controlling serving grant of user terminal of neighboring cell > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,689 B2 - Document ID: US9521689B2 - Status: Granted - Kind: B2 - Application number: 14/997,833 - Filed: 2016-01-18 - Published: 2016-05-19 - Granted: 2016-12-13 - Earliest claimed: 2011-12-30 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Chuanfeng He - Web page: https://patentgrep.com/patent/US9521689B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/0466: {the resource being a scrambling code} - H04W 76/27: Transitions between radio resource control [RRC] states - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Embodiments of the disclosure provide a method, an apparatus, and a system for controlling a serving grant of a user terminal (UE) of a neighboring cell. The method is used for controlling a UE in a CELL-FACH state or in an idle state of a neighboring cell through a common E-RGCH. The method includes: obtaining a control command by monitoring the common E-RGCH of the neighboring cell; determining whether the UE satisfies at least one further configured controlled condition; and when the UE satisfies the at least one controlled condition, adjusting the serving grant of the UE based on the obtained control command. Through the method and the apparatus according to the embodiments of the disclosure, throughput of the UE may be prevented from being reduced excessively, thereby improving communication performance. ## Claims ### Claim 1 A method for controlling a serving grant of a user equipment (UE) through a common enhanced dedicated channel relative grant channel (E-RGCH) of a neighboring cell of a cell to which the UE belongs, wherein the UE in a cell-forward access channel (CELL-FACH) state or in an idle state, comprising: setting, by a radio network controller (RNC), at least one controlled condition; sending, by the RNC, the at least one controlled condition to the UE, the at least one controlled condition comprises a serving grant threshold, wherein the serving grant threshold is for the UE determining whether the serving grant of the UE is higher than the serving grant threshold, and adjusting the serving grant based on a control command obtained from the common E-RGCH when the serving grant of the UE is higher than the serving grant threshold. ### Claim 2 (depends on 1) The method according to claim 1, wherein the serving grant threshold is for the UE neglecting the control command when the serving grant of the UE is lower than the serving grant threshold. ### Claim 3 (depends on 2) The method according to claim 2, wherein the adjusting the serving grant comprising: lowering the serving grant. ### Claim 4 (depends on 1) The method according to claim 1, wherein the adjusting the serving grant comprising: lowering the serving grant. ### Claim 5 An apparatus for controlling a serving grant of a user equipment (UE) through a common enhanced dedicated channel relative grant channel (E-RGCH) of a neighboring cell of a cell to which the UE belongs, wherein the UE in a cell-forward access channel (CELL-FACH) state or in an idle state, comprising: a processor; and a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to: set at least one controlled condition; send the at least one controlled condition to the UE, the at least one controlled condition comprises a serving grant threshold, wherein the serving grant threshold is for the UE determining whether the serving grant of the UE is higher than the serving grant threshold, and adjusting the serving grant based on a control command obtained from the common E-RGCH when the serving grant of the UE is higher than the serving grant threshold. ### Claim 6 (depends on 5) The apparatus according to claim 5, wherein the serving grant threshold is for the UE neglecting the control command when the serving grant of the UE is lower than the serving grant threshold. ### Claim 7 (depends on 6) The apparatus according to claim 6, wherein the adjusting the serving grant comprising: lowing the serving grant. ### Claim 8 (depends on 5) The apparatus according to claim 5, wherein the adjusting the serving grant comprising: lowing the serving grant. ### Claim 9 A radio network controller (RNC) for controlling a serving grant of a user equipment (UE) through a common enhanced dedicated channel relative grant channel (E-RGCH) of a neighboring cell of a cell to which the UE belongs, wherein the UE in a cell-forward access channel (CELL-FACH) state or in an idle state, comprising: a processor; and a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to: set at least one controlled condition; send the at least one controlled condition to the UE, the at least one controlled condition comprises a serving grant threshold, wherein the serving grant threshold is for the UE determining whether the serving grant of the UE is higher than the serving grant threshold, and adjusting the serving grant based on a control command obtained from the common E-RGCH when the serving grant of the UE is higher than the serving grant threshold. ### Claim 10 (depends on 9) The RNC according to claim 9, wherein the serving grant threshold is for the UE neglecting the control command when the serving grant of the UE is lower than the serving grant threshold. ### Claim 11 (depends on 10) The RNC according to claim 10, wherein the adjusting the serving grant comprising: lowing the serving grant. ### Claim 12 (depends on 9) The RNC according to claim 9, wherein the adjusting the serving grant comprising: lowing the serving grant.