Alcatel Lucent

Gemalto Sa

Jimin Liu

Gang Shen

Wu Zheng

Xiaobing Leng

Wei Zou

Dongyao Wang

Feng Han

Qun Zhao

Shan Jin

Wei Ni

Erwu Liu

Jiang Qi

Qi Jiang

Wei Wang

Kaibin Zhang

Dong Li

Zhaojun Xu

Jin Cai Shan

Erwu2c/o Alcatel-Lucent Shanghai Bell CoLtd Liu

The present invention provides a method and a device for adjusting the sleep mode of a mobile station in order to solve the problem in current multi-hop relay systems of long time delays in data transmission caused when data packets have to wait for the next listening window to reach the mobile station because of packet errors. Wherein, a relay apparatus judges whether the previous hop network apparatus needs to retransmit data packets to the mobile station; when the previous hop network apparatus needs to retransmit data packets to the mobile station, the relay apparatus transmits to the mobile station the adjustment related information for adjusting the sleep mode of the mobile station. The mobile station adjusts the sleep mode according to the adjustment related information. Preferably, the adjustment related information comprises indicating information for indicating that the mobile station is in triggered listening status within predetermined time interval. In addition, the relay apparatus may also report the adjustment related information to the previous hop network apparatus. The technical solution provided by the present invention obtains shorter time delays, utilizes wireless resources efficiently, and decreases demand on relay apparatus.

Method and device for adjusting sleep mode of mobile station

A relay method and device, wherein the control signal and the data signal which are in the same subframe are directly sent to a lower level device respectively by an upper level device and a relay function device. In one example, the relay function device transmits data signal using subscriber special reference signal to make the lower level device estimate an access channel correctly; in another example, the relay function device carries out precoding of the data signal correlative with the access channel so as to cancel the influence of the access channel, thereby make the lower level device receive data signal correctly. Retransmission control signaling is sent to the lower level device in each subframe by the upper level device to ensure the fixed sequential relationship of feedback retransmission.

Methods and devices for wireless relays

The present invention provides a network access method and system for Machine Type Communications (MTC), wherein the method comprises the following steps: an MTC device sends a preamble to a base station; the base station sends a Random Access Response (RAR) to the MTC device; if the RAR does not contain a temporary access resource assignment indication, the MTC device sends a Layer 2/Layer 3 message to the base station; otherwise, the MTC device re-attempts to perform network access; the base station sends a contention resolution message to the MTC device; if the contention resolution message contains a self-identification contained in the Layer 2/Layer 3 message sent by the MTC device, the network access is completed; if the contention resolution message contains the temporary access resource assignment indication, the MTC device re-attempts to perform the network access; otherwise, the MTC device attempts to perform the network access using the originally used access resource again. According to the present invention, it is enabled to dynamically and quickly perform assignment and release of MTC access resources based on actual access resource collisions, which thereby avoids waste of uplink resources in a semi-static configuration, reduces the possibility of collision, and protects normal access of non-MTC devices.

Network access method and system for machine type communications

The invention provides a temporary mobile station identity TMSI allocation method, comprising steps of: notifying a mobility management entity MME device of a corresponding mobility attribute based on a type of a Machine Type Communication MTC application, wherein the mobility attribute indicates whether a mobility of the MTC application is high or low; determining, by the MME device, a mobility layer associated with the MTC application according to the mobility attribute, and then allocating a TMSI from an available address space to a MTC device applying the MTC application based on a predetermined criterion, according to the determined mobility layer. The present invention further provides corresponding MTC server, MME device, network attachment method and location area update method.

TMSI allocation device and method thereof, and network attachment and location area update methods in M2M communication

The present invention is directed to provide a relay method in a wireless access system, including comprising the following steps: in downlink direction, receiving downlink data from a base station, wherein the downlink data include control information for relay operation; constructing downlink data to be retransmitted; retransmitting the constructed downlink data to wireless communication terminals according to a profile specified by the control information; and, in uplink direction, receiving uplink data from the wireless communication terminals according to a profile specified by the control information; recovering the uplink data of the wireless communication terminals; and retransmitting the uplink data to the base station according to the profile specified by the control information. The present invention further provides the corresponding base station device, relay device and wireless relay system. Through the present invention, the base station is able to perform centralized control of the entire mobile multi-hop relay system, which effectively reduces the complexity of the relay device and can realize a transparent transportation with respect to wireless communication terminals.

Relay method of wireless access systems and base station, relay device and replay system thereof

Disclosed are method and apparatus for transmitting/receiving audio/video content data in wireless access networks. The method comprises the steps of: encoding the audio/video content data into a basic stream having a first level of quality and an advanced stream, combination of the basic stream and the advanced stream has a second level of quality higher than the first level of quality; and transmitting the basic stream and the advanced stream with a first power and a second power lower than the first power on antennas, respectively. With the method and apparatus of the invention, the low SINR users are able to maintain the low data rate receiving the basic stream and the high SINR user can receive both the basic stream and advanced stream from two logical channels.

Method and apparatus for transmitting/receiving audio/video contents in wireless access networks

The present invention proposes new method(s) and apparatus(es) used for request and allocation of uplink transmission resource in wireless access network, which enables the mobile terminal to use non-contention resources closely spaced on time domain to trigger or adjust reallocation of uplink resource, so that quick response of the base station to the resource allocation request of a mobile terminal is effectively realized, and the demand of delay sensitive service is satisfied.

Method and apparatus for requesting and handling uplink resource allocation in wireless access network

To address the drawbacks of the current bandwidth requesting and allocation in the wireless broadband access network, the present invention proposes a technical solution of fast bandwidth requesting and allocation, wherein the MS sends a bandwidth allocation request message to the BS for only once, and the interactions between the BS and the MS are decreased so as to increase the efficiency of bandwidth requesting and allocation, effectively shorten the transmission waiting time of traffic data, and especially improve the support for latency-sensitive data traffic. Due to the fact that the interactions between the BS and the MS are decreased, various processing resources in the BS and the MS are spared. Additionally, the BS can also adjust the size of the time/frequency resource block on which each mobile station sends the bandwidth allocation request message according to the number of the mobile stations covered by the base station, and/or according to the traffic types in each mobile station, so as to make the whole wireless communication system operate efficiently.

Method and device for requesting and allocating bandwidths in wireless communication systems

A method for extending a coverage of a base station in a wireless communication network is disclosed, characterized in that a relay station transfers control information and communication related information between the base station and the mobile station according to an indication of the base station.

Relay station, base station and method for extending a coverage area of a base station in a radio network

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.

Method and apparatus for hybrid automatic repeat request

The invention relates to methods and devices for setting up connection for wireless relay network, wherein, mobile station utilizes the primary transmission path from itself and relay stations in the initial ranging and network entry procedure to send a request signal to base station. After the base station receives the request signal, it allocates a transmission path for the mobile station, and sends the information to the relay station on the path along the primary transmission path, and sends a response message to the mobile station. When the mobile station and the related relay stations obtain the corresponding response message and transmission path information, the signal sent by the mobile station is sent to the base station via relay stations along the transmission path.

Method and device for setting up connection between mobile station and base station in multi-hop relay network

The present invention relates to a wireless self-backhaul technique in a wireless communication network, especially in a WiMAX network, which implements wireless backhaul between base stations by using radio resources (frequency, sub-band or timeslot) of base stations' own. More specifically, uplink and downlink backhaul channels are formed between a master base station and a slaver base station using base stations' inherent resources and through offsetting the frame start time of the slaver base station for a period of time in relation to the master base station. The slaver base station operates in base station mode during local user access and operates in subscriber station mode during implementing wireless backhaul traffic with the master base station. Therefore, the slaver base station needs to switch between these two operating modes.

Self-backhaul method and apparatus in wireless communication networks

The present invention discloses a method and a base station for allocating bandwidth for subscriber stations and a backhaul station through taking into joint consideration uplink and down bandwidth requests from respective subscriber stations in a wireless single-hop self-backhaul network. Upon receipt of information on bandwidth requests from the subscriber stations, the base station takes uplink and downlink bandwidth requests into joint consideration, allocates bandwidth for the subscriber stations and the backhaul station, and then notifies the subscriber stations and the backhaul station. Since bandwidth allocation is no longer based on uplink and downlink resources separately, a relatively high system bandwidth utilization ratio can be achieved and uplink and downlink bandwidth fairness for asymmetric traffic be ensured even if the network is overloaded.

Growing community of inventors

Shanghai, China

Jimin Liu