Beijing Nufront Mobile Multimedia Technology Co. Ltd.

Guangdong Nufront Computer System Chip Co., Ltd

Nufront Mobile Communications Technology Co., Ltd.

Beijing Nufront Mobile Multimedia Tech. Co., Ltd.

Quangdong Nufront Computer System Chip Co., Ltd.

Dongshan Bao

Shenfa Liu

Jing Wang

Zhigang Yan

Lijun Pan

Yubao Zhou

Huijuan Yao

XiaoYan Yu

Jun Lei

Desheng Yan

Feifei Wang

Zhizuo Yang

Qianlei Liu

Yongbo Zeng

Jiaqing Wang

Chaonan Peng

Xiaoqiang Xie

Min Ren

Junhua Qin

Disclosed in the present disclosure is a method for realizing continued transmission of user data when a user station crosses multiple wireless network cells. The method includes: constructing a continuation guide table in an access point (AP) of a wireless network cell; when a user station crosses a first cell to a second cell, configuring the continuation guide tables in the AP of the first cell and the AP of the second cell; based on the continuation guide tables, building a data link of a network layer between an correspondent station of the user station and the user station located in a terminal cell; continuously transmitting data between the correspondent station of the user station and the user station in a source cell along the data link after the user station accesses the terminal cell. Further disclosed in the present disclosure is an access point device of a wireless network cell. According to the present disclosure, uninterrupted transmission of data streams can be realized for data being transmitted during a complex condition that a user station crosses a plurality of wireless network cells, thereby improving the user experience when a user surfs the internet using a wireless network.

Method for realizing continued transmission of user data during handover crossing multiple cells

Disclosed in the present disclosure is a method for realizing wireless network convergence. The method comprises: constructing a convergence link table in an AP of a wireless network cell; arranging a user management system in an external network; when cross-cell movement of a user station occurs, the user management system configuring convergence link tables in corresponding access points (APs) of two cells; and based on the configured convergence link tables, data transmitted by the user station in an original cell being transmitted in a new cell, thereby realizing wireless network convergence.

Method for realizing wireless network convergence

Disclosed in the present invention is a method for realizing continued transmission of user data during cross-cell handover of a user station. The method comprises: constructing a continuation guide table in an AP of a wireless network cell; when cross-cell handover of a user station occurs, configuring the continuation guide table in the AP; and when handover occurs, forwarding data being transmitted by the user station according to the continuation guide table. Further disclosed in the present invention is an AP of a wireless network cell. The AP is realized by constructing a continuation guide table in an existing AP. According to the present invention, uninterrupted transmission of data streams being transmitted when a user crosses a wireless network cell can be realized, thereby improving the user experience when the user surfs the internet using a wireless network.

Method for data transmission during cross-cell handover

The present invention provides a wireless communication method for rail transit. The method comprises: performing signaling interaction with a source cell base station after entering a source cell and obtaining a handover threshold parameter, the handover threshold parameter comprising distance information between a handover point and the source cell base station and signal intensity information; determining the handoff point based on the handover threshold parameter; and performing channel measurement when the handover point is reached and performing a handover from the source cell to a destination cell.

Wireless communication method and terminal for rail transit

The present disclosure is a method for frame acknowledgment. The method includes upon completion of downlink service data scheduling and resource allocation, allocating feedback resources in the uplink of the present physical frame; or, upon completion of the uplink service data scheduling and resource allocation, allocating feedback resources in the downlink of the next frame for sending a Group ACK response. The method further includes according to the allocated feedback resources, encapsulating the corresponding control signaling used for indicating feedback resource allocation; sending the feedback resource control signaling in a control channel of the physical frame. Also disclosed is a device for frame acknowledgement. In a centralized wireless communication system having an uplink and downlink frame structure, the method and device of the present disclosure realize data packet sending and acknowledgment in the form of MAC frames at the MAC level, and achieve the least acknowledgment delay and high reliability by providing group acknowledgment with minimum complexity, thus facilitating resource scheduling and retransmission scheduling.

Method and device for frame acknowledgment

Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.

Resource scheduling method and device

The present disclosure provides a method and apparatus for transmitting and receiving Channel State Information. The said transmitting method includes calculating the maximum value m(k) of real part and imaginary part of each element in CSI matrix H(k) of the sub-carrier; carrying out M bit quantization to m(k) to obtain the quantization amplitude M(k); calculating the linear portion M(k) of M(k); using M(k) for carrying out Nbit quantization to real part and imaginary part of each element in H(k) respectively to obtain the quantized CSI matrix H(k); Nbeing a positive integer; and transmitting said quantization amplitude M(k) and said quantized CSI matrix H(k).

Method and apparatus for transmitting and receiving channel state information

Disclosed in present invention is a wireless communication system, comprising: a CAP, for determining a structure of a current physical frame according to scheduled transmission resources, and sending information for indicating the structure of the current physical frame in the current physical frame; and at least one STA communicating with the CAP, for determining the structure of the current physical frame according to the information for indicating the structure of the current physical frame, the length of each physical frame depending on the structure of the current physical frame and being not fixed. Also disclosed are two devices for wireless communication.

Wireless communication system, network device, and terminal device

Disclosed is a method for implementing link self-adaptation, comprising: sending a downlink sounding channel and a channel quality information CQI feedback resource indication; and receiving CQI information, and selecting a suitable transmission mode for downlink data transmission according to the CQI information. Further disclosed are a network device and a terminal device. By using the method and devices provided in the present invention, the spectrum utilization rate and system performance can be improved.

Method for implementing link self-adaptation, network device and terminal device

A method and apparatus for transmitting and receiving data are disclosed. The method for transmitting data, comprising encapsulating one or multiple media access control protocol data units (MPDU) as a group media access control protocol data unit (G-MPDU) based on a length of the group media access control protocol data unit G-MPDU; fragmenting a current MPDU according to a residual length to obtain a fragmented MPDU when the residual length is insufficient to encapsulate the current MPDU; encapsulating the fragmented MPDU to the G-MPDU; and transmitting the encapsulated G-MPDU. The method ensures a high data transmission rate and does not wasting excess time to execute the fragmentation processing. The method also ensures a high resource utilization rate, utilizing fully the remaining length of the data unit.

Method and apparatus for transmitting and receiving data

Disclosed in the present invention is a method for data transmission. The method comprises the following steps: receiving coded bit streams; mapping said coded bit streams to every spatial stream. A device for implementing stream mapping, a device for implementing rate matching and a transmitter are also disclosed in the present invention. With the method and device in the present invention, compared with the current stream mapping method, the mapping is more uniform with higher gain in high order modulation and multi-streams circumstance in a closed-loop model. And the system performance of a radio communication system could be further improved.

Method and device for data transmission

The present invention provides a method for accessing a wireless network, so as to implement acquisition of system synchronization during the process of accessing the wireless network in the situation that a physical frame structure can be configured dynamically. The method for acquiring system synchronization comprises: searching a physical frame on a current sub-channel; resolving a system information channel (SICH) and a control channel (CCH) in the found physical frame, wherein the SICH indicates a structure of the physical frame, and the CCH indicates allocation of system resources; and acquiring a system parameter from the physical frame by using the resolving result. A device for implementing the above method is further provided.

Method and device for accessing wireless network

The present disclosure provides a method and apparatus for transmitting the beamforming matrix. The method includes calculating the maximum value m(k) of the real part and imaginary part of the elements in subcarrier's beamforming matrix; carrying out a M bits quantization to m(k) and obtaining the quantization amplitude M(k), calculating the linear part M(k) of M(k); carrying out a respectively Nbits quantization to the real part and imaginary part of every element in V(k) by M(k), and obtaining the quantized beamforming matrix V(k); Nis positive integer; transmitting said quantization amplitude M(k) and said quantized beamforming matrix V(k).

Method and apparatus for transmitting and receiving beamforming matrix

In the present invention, before data transmission, a 'connection', between a requesting end and a destination end, identified by a traffic flow identifier (FID) is established or modified through traffic flow management. Therefore, when the requesting end and the destination end perform data transmission on the traffic flow, the FID alone can sufficiently serve as the identifier, so as to save the need of carrying the destination end identifier in each exchanged data packet, thereby simplifying the operation.

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Beijing, China

Dongshan Bao