Patent application number | Description | Published |
20090088164 | HANDOVER CONTROL METHOD IN A WIRELESS ACCESS SYSTEM, RELAY STATION AND BASE STATION - The present invention provides a handover control method in a wireless access system, a relay station and a base station for performing handover control in a mobile multi-hop relay wireless access system such that the wireless access system is enabled to cover a wider area. To achieve the above object, the present invention provides a handover control method in a wireless access system, wherein the wireless access system comprises a mobile station and a base station, which receive and send message via a wireless channel, and further comprises a relay station for forwarding message from the mobile station and the base station under control of the base station, characterized in that the method comprising a relay station measure and arbitration step in which the relay station measures the message and arbitrates whether to relay the message, and a base station measure and handover step in which the base station measures the message and arbitrates whether to perform handover. | 04-02-2009 |
20090103472 | METHOD AND DEVICE FOR COOPERATIVE RELAY WITH MULTIPLE RELAY STATIONS IN WIRELESS TELECOMMUNICATION NETWORK - The invention provides a method and device for cooperative relay with multiple relay stations in the wireless telecommunication network. To be specific, according to the invention, in single-hop or multi-hop relay telecommunication link, the relay device and other relay devices within the same hop select space diversity or space multiplexing to carry out cooperative relay operation according to the processing indicating information from the base station, thus obtaining space diversity gain and space multiplexing gain. | 04-23-2009 |
20090116423 | METHOD AND DEVICE FOR COOPERATIVE RELAY IN WIRELESS COMMUNICATION NETWORK - The invention provides a method and device for cooperative relay with multiple relay stations in the wireless telecommunication network. The invention is proposed to improve the quality of relayed signals, reduce the resources needed for relaying and solve the problems when performing the switch between relay devices. The method and device according to the invention are characterized in that, the received signals are processed according to the indicating information from a BS, before sending them to the next level network nodes. Compared with the prior art, the present invention can achieve better spatial diversity gain or spatial multiplexing gain, even both of them. Further, the present invention does not require a high level synchronization. Therefore, the performance of the signals received can be considerably improved, the resources needed for relaying are also reduced. Further, the present invention is very practical. | 05-07-2009 |
20090313518 | METHOD AND APPARATUS FOR HYBRID AUTOMATIC REPEAT REQUEST - The present invention provides two primary Hybrid Automatic Repeat reQuest (HARQ) mechanisms for a multi-hop network, i.e. an active Mobile Multi-hop Relaying (MMR) HARQ and a passive Mobile Multi-hop Relaying (MMR) HARQ. According to the solution of the present invention, there are provided a method and a device for HARQ retransmission in relay stations of a wireless communication network, wherein in HARQ retransmission, the HARQ procedure is implemented based on resource allocated by a base station; and a method and device for HARQ in a base station, characterized in that a HARQ procedure is implemented in-between one or more relay stations and a mobile station. With the methods of the present invention, the HARQ problems existing in a multi-hop network are overcome, the correction rate of data transmission is improved, while time delay for data transmission is reduced. | 12-17-2009 |
20100182946 | METHODS AND DEVICES FOR TRANSMITTING DATA IN THE RELAY STATION AND THE BASE STATION - A new data packet transmission solution is provided in the present invention. Firstly, a source network equipment sends a duplicate of a data packet to a sponsor relay station and other one or more assistant relay stations; then the one or more assistant relay stations transmit the duplicate of the data packet received to the sponsor relay station. After the sponsor relay station receives the duplicate directly transmitted by the source and a plurality of duplicates which are transmitted by one or more assistant relay stations, it applies a joint processing of several duplicates of the data packet, and then transmits the result of the joint processing to a corresponding network equipment. Preferably, after one or more assistant relay stations transmit the duplicates of the data packet to the sponsor relay station, the destination network equipment also receives one or more duplicates, and applies a joint processing of the one or more duplicates and a duplicate of the data packet which is received from the sponsor relay station. | 07-22-2010 |
20110007689 | SYSTEM FOR TRANSMITTING INTERACTING DATA BETWEEN NEIGHBORING BSS VIA MS AND METHOD THEREOF - The present invention provides a system for transmitting interacting data between neighboring BSs via a MS and a method thereof The system comprises a first BS which transmits the interacting data to the MS, and a MS which receives the interacting data from the first BS and transmits the received interacting data to a second BS that neighbors to the first BS. The invention also provides a communication system and a method thereof, wherein a MS communicates with a first BS using an established first communication channel, and the MS to communicates with the second BS using an established second communication channel. The system of the invention uses a MS within the overlapped coverage area of neighboring BSs to perform transmission of interacting data such as control information for coordination, so as to reduce latency required for interacting data transmission between neighboring BSs. Compared to legacy BS coordination via a backbone, the BS coordination via a MS of the invention is predictable and requires less latency. | 01-13-2011 |
20150065139 | HANDOVER CONTROL METHOD IN A WIRELESS ACCESS SYSTEM, RELAY STATION AND BASE STATION - The present invention provides a handover control method in a wireless access system, a relay station and a base station for performing handover control in a mobile multi-hop relay wireless access system such that the wireless access system is enabled to cover a wider area. To achieve the above object, the present invention provides a handover control method in a wireless access system, wherein the wireless access system comprises a mobile station and a base station, which receive and send message via a wireless channel, and further comprises a relay station for forwarding message from the mobile station and the base station under control of the base station, characterized in that the method comprising a relay station measure and arbitration step in which the relay station measures the message and arbitrates whether to relay the message, and a base station measure and handover step in which the base station measures the message and arbitrates whether to perform handover. | 03-05-2015 |
20150163772 | METHOD AND APPARATUS OF COMPRESSING A MULTI-CARRIER MODULATION SIGNAL IN FREQUENCY DOMAIN - The invention provides a method and an apparatus, of compressing a multi-carrier modulation signal in frequency domain. By setting a modulation mode indicator, the preferable technical scheme could be changed dynamically according to the modulation mode, so as to select the corresponding bits for the different modulation mode. Moreover, according the preferable technical scheme of the present invention, the signal of the data channel in the resource element after extracting the second scale factor is represented by the bits which are occupied by a pair of I/Q signal. Thus, more bits are saved and compression ratio is enhanced. | 06-11-2015 |