# US 8,543,126 B2 · Method and apparatus for supporting high-speed mobile terminals in a distributed antenna system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,543,126 B2 - Document ID: US8543126B2 - Status: Granted - Kind: B2 - Application number: 13/345,591 - Filed: 2012-01-06 - Published: 2012-07-12 - Granted: 2013-09-24 - Earliest claimed: 2011-01-07 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Su-Ryong Jeong; Tae-Young Kim - Inventors: Su-Ryong Jeong; Tae-Young Kim - Web page: https://patentgrep.com/patent/US8543126B2 ## CPC - H01Q 23/00: Antennas with active circuits or circuit elements integrated within them or attached to them - H04W 36/322: {by location data} - H04W 36/324: {by mobility data, e.g. speed data} - H04W 88/085: {Access point devices with remote components} - Y02D 30/70: in wireless communication networks - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A method and apparatus for supporting a high-speed mobile terminal in a distributed antenna system. The method includes acquiring information on a position and a speed of each terminal of a plurality of terminals, mapping the plurality of terminals to at least one or more terminal groups based on at least one or more of the position or the speed of the terminal, determining a service end time point at a serving antenna node and a service start time point at a target antenna node, using position and speed information associated with the terminal group, and switching an antenna node for the terminal group, according to the service end time point at the serving antenna node and the service start time point at the target antenna node. ## Claims ### Claim 1 A method for supporting terminal communication in a distributed antenna system, the method comprising: mapping, by a base station, a plurality of terminals to at least one or more terminal groups based on acquired information associated with at least one or more of a position and a speed of each terminal of the plurality of terminals; determining a service end time point at a serving antenna node and a service start time point at a target antenna node using position and speed information associated with each terminal group; and switching an antenna node for the terminal group according to the service end time point at the serving antenna node and the service start time point at the target antenna node. ### Claim 2 (depends on 1) The method of claim 1, further comprising: allocating a resource region for each terminal group based on at least one or more of the position and speed information associated with the terminal group; and servicing the terminal group using the allocated resource region, wherein the allocated resource region is distributed among the serving antenna node and the target antenna node. ### Claim 3 (depends on 2) The method of claim 2, wherein allocating the resource region for each terminal group comprises: delineating each resource region into a plurality of subbands according to the number of terminal groups; and mapping the plurality of subbands to the terminal groups. ### Claim 4 (depends on 1) The method of claim 1, wherein acquiring the information on the position and speed of each terminal from the plurality of terminals comprises: transmitting a synchronous signal for identifying if it is a distributed antenna cell supporting mobility, to the terminal; after receiving an initial ranging signal from the terminal, transmitting a ranging response signal to the terminal; and after transmitting the ranging response signal, receiving at least one or more signal that is used to indicate the position and the speed of the terminal. ### Claim 5 (depends on 1) The method of claim 1, wherein acquiring the information on the position and speed of each terminal from the plurality of terminals comprises: requesting that the terminal report at least one or more of the position and the speed of the terminal; and receiving, by the base station, at least one or more of the position and the speed from the terminal. ### Claim 6 A method for supporting terminal communication in a distributed antenna system, the method comprising: determining, by a terminal, if a received signal is transmitted from a distributed antenna cell supporting mobility; if the received signal is transmitted from the distributed antenna cell supporting the mobility, providing information on a position and a speed of a terminal to a Base Station (BS), wherein the BS determines a service end time point at a serving antenna node and a service start time point at a target antenna node using position and speed information associated with each terminal group; receiving information associated with a resource region based on at least one or more of a position and a speed information associated with a terminal group from the BS; and communicating with the BS using an allocated resource region. ### Claim 7 (depends on 6) The method of claim 6, further comprising receiving information on a service end time point at a serving antenna node and a service start time point at a target antenna node from the BS. ### Claim 8 (depends on 6) The method of claim 6, further comprising distributing the allocated resource region among the serving antenna node and the target antenna node. ### Claim 9 (depends on 6) The method of claim 6, further comprising estimating a position and a speed of the terminal. ### Claim 10 (depends on 9) The method of claim 9, further comprising reporting the estimated position and the speed of the terminal to the BS in at least one of a periodic manner and a random manner. ### Claim 11 An apparatus for supporting terminal communication in a distributed antenna system, the apparatus comprising: a receiver configured to acquire information on a position and a speed of each terminal of a plurality of terminals; and a centralized control unit configured to map the plurality of terminals to at least one or more terminal groups based on at least one or more of the position and the speed of each terminal, determining a service end time point at a serving antenna node and a service start time point at a target antenna node using a position and a speed information associated with each terminal group, and switching an antenna node for the terminal group according to the service end time point at the serving antenna node and the service start time point at the target antenna node. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the centralized control unit is configured to allocate a resource region by terminal group based on at least one or more of the position and speed information associated with the terminal group, and service the terminal group using the allocated resource region, and wherein the allocated resource region is distributed among the serving antenna node and the target antenna node. ### Claim 13 (depends on 11) The apparatus of claim 11, wherein the centralized control unit is configured to delineate the resource region into a plurality of subbands according to the number of terminal groups, and map the plurality of subbands to the terminal groups. ### Claim 14 (depends on 11) The apparatus of claim 11, wherein the centralized control unit is configured to transmit a synchronous signal for identifying whether it is a distributed antenna cell supporting mobility to the terminal, transmit a ranging response signal to the terminal after receiving an initial ranging signal from the terminal, and receive at least one or more of the position and the speed from the terminal after transmitting the ranging response signal. ### Claim 15 (depends on 11) The apparatus of claim 11, wherein the centralized control unit is configured to request that the terminal report at least one or more of the position and the speed of the terminal, and receive at least one or more of the position and the speed from the terminal. ### Claim 16 An apparatus for supporting terminal communication in a distributed antenna system, the apparatus comprising a controller configured to: identify if the distributed antenna system comprises a distributed antenna cell supporting mobility, if the distributed antenna system comprises a distributed cell supporting mobility, provide information on a position and a speed of a terminal to a Base Station (BS), wherein the BS determines a service end time point at a serving antenna node and a service start time point at a target antenna node using position and speed information associated with each terminal group; allocate a resource region based on at least one or more of position and speed information associated with a terminal group from the BS, and communicate with the BS using the allocated resource region. ### Claim 17 (depends on 16) The apparatus of claim 16, further comprising a receiver configured to receive information on a service end time point at a serving antenna node and a service start time point at a target antenna node from the BS. ### Claim 18 (depends on 16) The apparatus of claim 16, wherein the controller is configured to distribute the resource region among the serving antenna node and the target antenna node. ### Claim 19 (depends on 16) The apparatus of claim 16, further comprising a position measurer configured to estimate the position and the speed of the terminal. ### Claim 20 (depends on 19) The apparatus of claim 19, further comprising a transmitter configured to report the estimated position and speed of the terminal to the BS in at least one of a period manner or a random manner.