# US 5,345,474 A · Temporary address system in a radio communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,345,474 A - Document ID: US5345474A - Status: Granted - Kind: A - Application number: 08/126,010 - Filed: 1993-09-24 - Granted: 1994-09-06 - Earliest claimed: 1990-10-04 - Assignees: Small Power Communication Systems Research Laboratories Co., Ltd. - Inventors: Toshiya Hoshikawa - Web page: https://patentgrep.com/patent/US5345474A ## CPC - H04L 61/5038: for local use, e.g. in LAN or USB networks, or in a controller area network [CAN] - H04L 61/5084: Providing for device mobility (network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04) - H04W 8/26: Network addressing or numbering for mobility support - H04W 60/00: Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration - H04L 2101/604: Address structures or formats - H04L 2101/622: Layer-2 addresses, e.g. medium access control [MAC] addresses - H04W 16/12: Fixed resource partitioning - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract According to the temporary address system in the radio communications system of the present invention, as a temporary address data, an identification number determined based on the number of repeated zones in which the pattern of the same frequency is repeated, is assigned to a radio base station, and a temporary identification number, which is valid temporarily in the area of the base station is assigned to a terminal device. Real address data, which corresponds to said temporary address data, and is used to specify a terminal device, is stored in a not-yet-used transmission data field during traffic of control data, which is conducted for setting up a radio link between a base station and a terminal device, and is transmitted. Thus, in the radio communication system, using an address field having a limited number of bits, more number of terminal devices than that is possible with the bit length, can be used in the area of a base station. ## Claims ### Claim 1 A temporary address system in a radio communication system comprising: frame for transmitting the stored digital code data by radio of one of a frequency out of a frequency group, said frame means including a bit and frame sync field, frame count field, address field, control field, transmission data field, and frame check and correct sequence field; a radio base station forming an area to/from which said digital code data stored in said frame can be transmitted/received; and at least one portable radio terminal device for conducting transmission and reception of a signal with respect to said radio base station in said area; wherein said radio base station registers a temporary address for a terminal device every time a radio link is set upon either transmission request from a terminal device, or reception request from the radio base station, and erase the temporary address after completion of communications, and a temporary identification data is assigned to an address field of said frame, and the temporary identification data is repeatedly set to the radio terminal device with which the radio link is formed. ### Claim 2 A radio system using a temporary address system comprising: frame for transmitting a stored digital code data by radio of a plurality of frequencies or a plurality of frequency groups, said frame including a bit and frame sync field, frame count field, address field, control field, transmission data field, and frame check and correct sequence field; and zones each formed of a radio base station forming an area to/from which said digital code data stored in said frame means can be transmitted/received, and at least one portable radio terminal device for conducting transmission and reception of a signal with respect to said radio base station in said area, a frequency group is assigned to each of the zones, wherein said zones are made into a group in which areas of frequencies are arranged such that areas of the same frequency group are not located adjacent to each other, and said radio base station registers a temporary address for a terminal device every time a radio link is set upon either transmission request from a terminal device, or reception request from the radio base station, and erase the temporary address after completion of communications. ### Claim 3 (depends on 2) A radio system according to claim 2, wherein when the radio link is set between the terminal device and its base station in each of these zones, and between the base stations of these zones, the link is formed and the link between the base stations may also be formed through other communications networks. ### Claim 4 (depends on 2) A radio system according to claim 2, wherein a real address for specifying said base station and said terminal device, corresponding to said temporary identification data, is stored in the transmission data field of each of said station and device upon setting of the radio link, and transmitted to each other. ### Claim 5 (depends on 2) A radio system according to claim 2, wherein said address field includes a plurality of bits, a predetermined number of which indicates the temporary address of the radio base station and the rest of the bits indicates that of the terminal device. ### Claim 6 A temporary address system in a radio communication system, comprising: a plurality of zones, each of which has at least one radio terminal device in an area of a radio base station for transmitting/receiving a signal, said plurality of zones being grouped such that areas of a same frequency are not arranged adjacent with each other, thereby the same frequency is repeatedly used; and an address field which stores identification data of a radio base station and radio terminal device, said address field being located in a frame for transmitting digital code data by radio; and wherein data based on the number of zone groups is assigned to said address field as the identification data of the radio base station. ### Claim 7 A temporary address system in a radio communication system, comprising: a plurality of zones, each of which has at least one radio terminal device in an area of a radio base station for transmitting/receiving a signal, said plurality of zones being grouped such that areas of a same frequency are not arranged adjacent with each other, thereby the same frequency is repeatedly used; and an address field which stores identification data of a radio base station and radio terminal device, said address field being located in a frame for transmitting digital code data by radio; and wherein temporary identification data of a radio terminal device, which is effective only when a radio link is constituted between the radio base station and the radio terminal device, is assigned to said address field as the identification data of the radio terminal device. ### Claim 8 (depends on 6) A temporary address system in a radio communication system according to claim 6, wherein a real address data of the radio base station is stored in a target field which is designed for transmitting data while setting a radio link, and then transmitted. ### Claim 9 (depends on 7) A temporary address system in a radio communication system according to claim 7, wherein a real address data of the radio terminal device is stored in a target field which is designed for transmitting data while setting the radio link, and then transmitted.