# US 2013/0153298 A1 · Method and apparatus for enhancing cell-edge user performance and signaling radio link failure conditions via downlink cooperative component carriers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153298 A1 - Document ID: US20130153298A1 - Status: Published application - Kind: A1 - Application number: 13/577,549 - Filed: 2010-02-19 - Published: 2013-06-20 - Earliest claimed: 2009-02-19 - Assignees: InterDigital Patent Holdings, Inc. - Inventors: Philip J. Pietraski; Rui Yang; Kai Li; Carl Wang; Tao Deng; Samian Kaur; Erdem Bala; Ravikumar V. Pragada - Web page: https://patentgrep.com/patent/US20130153298A1 ## CPC - H04W 52/346: {distributing total power among users or channels} - E21B 7/04: Directional drilling - E21B 47/022: of the borehole, e.g. using geomagnetism - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - H04L 5/0062: {Avoidance of ingress interference, e.g. ham radio channels} - H04L 5/0073: {Allocation arrangements that take into account other cell interferences} - H04W 16/08: Load shedding arrangements - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 36/00835: {Determination of neighbour cell lists} - H04W 36/00837: {Determination of triggering parameters for hand-off} - H04W 52/143: {Downlink power control} - H04W 52/242: {taking into account path loss} - H04W 52/325: {Power control of control or pilot channels} - H04W 52/40: during macro-diversity or soft handoff - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 52/283: {Power depending on the position of the mobile} - H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading - H04W 52/343: {taking into account loading or congestion level} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A wireless communication network and method are described for enhancing cell-edge performance of a wireless transmit/receive unit (WTRU). The WTRU may establish a connection with a plurality of sites via respective downlinks (DLs). Each DL may include at least one DL component carrier (CC) that operates on a frequency that is the same or different than one or more of the other CCs. The sites may manipulate their transmit power for a particular CC operating frequency such that the distance from a particular one of the sites to its cell boundary may become larger by increasing its transmit power on the particular frequency, and the distance from at least one of the other sites to its respective cell boundary may become smaller by decreasing its transmit power on the particular frequency. Thus, a coverage overlap between different CC frequencies may be created while maintaining a frequency reuse pattern of one. ## Claims ### Claim 1 A method of enhancing cell-edge performance of a wireless transmit/receive unit (WTRU), the method comprising: the WTRU establishing a connection with a plurality of sites via respective downlinks (DLs), each DL including at least one DL component carrier (CC) that operates on a frequency that is the same or different than one or more of the other DL CCs; and the sites manipulating their transmit power for a particular DL CC operating frequency, wherein the distance from a particular one of the sites to its cell boundary becomes larger by increasing its transmit power on the particular DL CC operating frequency, and the distance from at least one of the other sites to its respective cell boundary becomes smaller by decreasing its transmit power on the particular DL CC operating frequency. ### Claim 2 (depends on 1) The method of claim 1 wherein a coverage overlap between different CC frequencies is created while maintaining a frequency reuse pattern of one. ### Claim 3 (depends on 1) The method of claim 1 further comprising: the WTRU establishing additional connections with the sites via respective uplinks (ULs), each UL including at least one UL CC that operates on a frequency that is the same or different than one or more of the other UL CCs. ### Claim 4 (depends on 3) The method of claim 3 further comprising: the WTRU transmitting UL control information (UCI) via at least one of the UL CCs or an X2 interface connected between two of the sites. ### Claim 5 (depends on 1) The method of claim 1 where the WTRU is configured to receive data from any of the sites, or simultaneously from two or more of the sites. ### Claim 6 (depends on 1) The method of claim 1 wherein the sites include at least one of a Node-B, an evolved Node-B (eNB), a remote radio head (RRH) associated with a base station, or one of several sector transmit antennas of a Node-B or an eNB. ### Claim 7 (depends on 1) The method of claim 1 wherein a power usage pattern is defined for each CC in a reuse set. ### Claim 8 (depends on 1) The method of claim 1 wherein an antenna pattern is defined for each CC in a reuse set. ### Claim 9 (depends on 1) The method of claim 1 wherein individual CC activation or CC deactivation is used in addition to a handover procedure to effectively support a CC-specific handover to maintain a desired reception quality. ### Claim 10 (depends on 1) The method of claim 1 further comprising: the WTRU detecting a CC failure; and the WTRU sending a partial radio link failure (RLF) report to a CC of a cooperating site. ### Claim 11 (depends on 10) The method of claim 10 further comprising: establishing an X2 interface, a common control channel (CCCH) or a dedicated control channel (DCCH) between the cooperating site and a serving site to forward a partial RLF indication from the cooperating site to the serving site. ### Claim 12 A wireless transmit/receive unit (WTRU) in communication with a plurality of sites configured to manipulate their transmit power for a particular downlink (DL) component carrier (CC) operating frequency, the WTRU configured to establish a connection with the sites via respective DLs, each DL including at least one DL CC that operates on a frequency that is the same or different than one or more of the other DL CCs, wherein the distance from a particular one of the sites to its cell boundary becomes larger by increasing its transmit power of the particular DL CC operating frequency, and the distance from at least one of the other sites to its respective cell boundary becomes smaller by decreasing its transmit power on the particular DL CC operating frequency. ### Claim 13 (depends on 12) The WTRU of claim 12 wherein the WTRU is further configured to establish additional connections with the sites via respective uplinks (ULs), each UL including at least one UL CC that operates on a frequency that is the same or different than one or more of the other UL CCs. ### Claim 14 (depends on 13) The WTRU of claim 13 wherein the WTRU is further configured to transmit UL control information (UCI) via at least one of the UL CCs or an X2 interface connected between two of the sites. ### Claim 15 (depends on 12) The WTRU of claim 12 where the WTRU is configured to receive data from any of the sites, or simultaneously from two or more of the sites. ### Claim 16 (depends on 12) The WTRU of claim 12 wherein the WTRU is configured to send a partial radio link failure (RLF) report to a CC of a cooperating site on a condition that the WTRU detects a CC failure. ### Claim 17 A wireless communication network comprising: a plurality of sites configured to manipulate their transmit power for a particular downlink (DL) component carrier (CC) operating frequency; and a wireless transmit/receive unit (WTRU) configured to establish a connection with the sites via respective DLs, each DL including at least one DL CC that operates on a frequency that is the same or different than one or more of the other DL CCs, wherein the distance from a particular one of the sites to its cell boundary becomes larger by increasing its transmit power of the particular DL CC operating frequency, and the distance from at least one of the other sites to its respective cell boundary becomes smaller by decreasing its transmit power on the particular DL CC operating frequency. ### Claim 18 (depends on 17) The network of claim 17 wherein a coverage overlap between different CC frequencies is created while maintaining a frequency reuse pattern of one. ### Claim 19 (depends on 17) The network of claim 17 wherein the sites include at least one of a Node-B, an evolved Node-B (eNB), a remote radio head (RRH) associated with a base station, or one of several sector transmit antennas of a Node-B or an eNB. ### Claim 20 (depends on 17) The network of claim 17 wherein the sites include at least one of a Node-B, an evolved Node-B (eNB), a remote radio head (RRH) associated with a base station, or one of several sector transmit antennas of a Node-B or an eNB.