# US 8,570,886 B2 · Communication system, mobile station, base station, response decision method, resource configuration decision method, and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,886 B2 - Document ID: US8570886B2 - Status: Granted - Kind: B2 - Application number: 12/920,419 - Filed: 2008-12-05 - Published: 2011-01-13 - Granted: 2013-10-29 - Earliest claimed: 2008-03-19 - Assignees: NEC Corporation - Applicants: Hiroaki Aminaka; Jinsock Lee - Inventors: Hiroaki Aminaka; Jinsock Lee - Web page: https://patentgrep.com/patent/US8570886B2 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/04: Wireless resource allocation - H04W 72/20: Control channels or signalling for resource management - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04J 13/107: {by concatenation} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number. ## Claims ### Claim 1 A communication system including at least one mobile station, said communication system further comprising: a base station which receives a preamble transmitted by said at least one mobile station, and transmits a response to the received preamble to said at least one mobile station, and in case that said response is a first response, said at least one mobile station performs a signal transmission using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a first signature included in a signal transmitted from said base station, wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a second signature used for said preamble. ### Claim 2 (depends on 1) A communications system according to claim 1, wherein said mobile station determines said default resource configuration for use in said transmission further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble. ### Claim 3 (depends on 1) A communications system according to claim 1, wherein said base station prepares a plurality of said default resource configurations for each said preamble signature. ### Claim 4 (depends on 3) A communications system according to claim 3, wherein said base station prepares a plurality of values of a parameter for calculating said default resource configuration, selects a value of said parameter, and broadcasts it. ### Claim 5 (depends on 4) A communications system according to claim 4, wherein, in a case that a predetermined condition is satisfied, said base station modifies said parameter to another value. ### Claim 6 (depends on 3) A communications system according to claim 3, wherein said base station prepares a plurality of values of the parameter for calculating said default resource configuration, and broadcasts them. ### Claim 7 (depends on 6) A communications system according to claim 6, wherein said mobile station keeps said broadcast parameter, selects one of the values of said parameter based on a predetermined condition. ### Claim 8 (depends on 7) A communications system according to claim 7, wherein said predetermined condition is time at which said preamble is transmitted. ### Claim 9 (depends on 1) A communications system according to claim 1, wherein a response to said preamble is transmitted using Acquisition Indicator Channel (AICH). ### Claim 10 (depends on 1) A communications system according to claim 1, wherein said resource configuration is Enhanced Dedicated Channel (E-DCH) resource configuration. ### Claim 11 A communication system comprised of a base station and mobile stations, wherein said base station receives a preamble transmitted by said mobile station, and transmits a response to the received preamble to said mobile station, and in a case that said response is a first response, said mobile station transmits data using information about at least a part of a default resource configuration of the own mobile station that is determined using a total number of resource configurations or a value obtained from said total number, wherein said mobile station determines said default resource configuration for use in said transmission further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and wherein said mobile station calculates said default resource configuration Dind for use in said transmission as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y. ### Claim 12 A communication system comprised of a base station and mobile stations, wherein said base station receives a preamble transmitted by said mobile station, and transmits a response to the received preamble to said mobile station, and in a case that said response is a first response, said mobile station transmits data using information about at least a part of a default resource configuration of the own mobile station that is determined using a total number of resource configurations or a value obtained from said total number, wherein said base station prepares a plurality of said default resource configurations for each said preamble signature, wherein said base station prepares a plurality of values of a parameter for calculating said default resource configuration, selects a value of said parameter, and broadcasts it, and wherein said parameter is comprised of a positional offset and a spacing offset, and said base station calculates a default resource configuration Dind for each group as Dind=(Cj×PreInd+Bi) mod Y, where the positional offset is designated as Bi (i=1, . . . , N; N is a natural number), and the spacing offset is designated as Cj (j=1, . . . , L; L is a natural number). ### Claim 13 A communication system comprised of a base station and mobile stations, wherein said base station receives a preamble transmitted by said mobile station, and transmits a response to the received preamble to said mobile station, and in a case that said response is a first response, said mobile station transmits data using information about at least a part of a default resource configuration of the own mobile station that is determined using a total number of resource configurations or a value obtained from said total number, wherein said base station prepares a plurality of said default resource configurations for each said preamble signature, wherein said base station prepares a plurality of values of a parameter for calculating said default resource configuration, selects a value of said parameter, and broadcasts it, and wherein in a case that a predetermined condition is satisfied, said base station modifies said parameter to another value, and wherein said predetermined condition is based on a utilization rate obtained from the number of default resource configurations that can be determined from the value of said parameter and the number of busy ones among them. ### Claim 14 A base station which receives a preamble from a mobile station and transmits a response to said preamble to said mobile station, wherein, in case that said response is a first response, said mobile station performs a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a first signature included in a signal transmitted from said base station, and wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a second signature used for said preamble. ### Claim 15 (depends on 14) A base station according to claim 14, wherein said base station determines said default resource configuration for use in said determination of a responsive notification further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble. ### Claim 16 (depends on 14) A base station according to claim 14, wherein said base station prepares a plurality of said default resource configurations for each said preamble signature. ### Claim 17 (depends on 16) A base station according to claim 16, wherein said base station prepares a plurality of values of a parameter for calculating said default resource configuration, selects a value of said parameter, and broadcasts it. ### Claim 18 (depends on 16) A base station according to claim 16, wherein said base station prepares a plurality of values of the parameter for calculating said default resource configuration, and broadcasts them. ### Claim 19 A base station that determines a responsive notification in response to a preamble transmitted by a mobile station based on a default resource configuration determined using a total number of resource configurations or a value obtained from said total number, wherein said base station determines said default resource configuration for use in said determination of the responsive notification further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and wherein said base station calculates said default resource configuration Dind for use in said determination of a response as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y. ### Claim 20 A mobile station, for transmitting a preamble to a base station, which receives a response to said preamble from said base station, and in case that said response is a first response, said mobile station performs a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a second signature included in a signal transmitted from said base station, wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble sing signature number for identifying a first signature used for said preamble. ### Claim 21 (depends on 20) A mobile station according to claim 20, wherein said mobile station determines said default resource configuration for use in said transmission further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble. ### Claim 22 (depends on 20) A mobile station according to claim 20, wherein said mobile station calculates said default resource configuration based on a parameter broadcast by said base station. ### Claim 23 A mobile station for transmitting a preamble to a base station, wherein said mobile station receives a response to said preamble from said base station, and in a case that said response is a first response, said mobile station transmits data using information about at least a part of a resource configuration that is determined as a default resource configuration of the own mobile station using a total number of resource configurations or a value obtained from said total number, wherein said mobile station determines said default resource configuration for use in said transmission further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and wherein said mobile station calculates said default resource configuration Dind for use in said transmission as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y. ### Claim 24 A response determination method for a base station, comprising: receiving a preamble from a mobile station, and transmitting a response to said preamble to said mobile station, in case that said response is a first response, performing, at said mobile station, a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a first signature included in a signal transmitted from said base station, wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a second signature used for said preamble. ### Claim 25 (depends on 24) A response determination method according to claim 24, comprising determining said default resource configuration for use in said determination of a responsive notification further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble. ### Claim 26 (depends on 24) A response determination method according to claim 24, wherein said base station prepares a plurality of said default resource configurations for each said preamble signature. ### Claim 27 (depends on 26) A response determination method according to claim 26, wherein said base station has steps of preparing a plurality of values of a parameter for calculating said default resource configuration, selecting a value of said parameter, and broadcasting it. ### Claim 28 (depends on 26) A response determination method according to claim 26, wherein said base station has steps of preparing a plurality of values of the parameter for calculating said default resource configuration, and broadcasting them. ### Claim 29 A response determination method for a base station, comprising: determining a responsive notification in response to a preamble transmitted by a mobile station based on a default resource configuration determined using a total number of resource configurations or a value obtained from said total number, determining said default resource configuration for use in said determination of a responsive notification further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and calculating said default resource configuration Dind for use in said determination of a response as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y. ### Claim 30 A resource configuration determination method for a mobile station, comprising: receiving a response to a preamble from a base station, and in case that said response is a first response, performing a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a second signature included in a signal transmitted from said base station, wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a first signature used for said preamble. ### Claim 31 (depends on 30) A resource configuration determination method according to claim 30, comprising determining said default resource configuration further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble. ### Claim 32 (depends on 30) A resource configuration determination method according to claim 30, wherein said mobile station calculates said default resource configuration based on a parameter broadcast by said base station.