Utstarcom (china) Co. Ltd.

Utstarcom Telecom Co., Ltd.

Baijun Zhao

Sheng Liu

Xiyuan Chen

Jun Hu

Ping Lin

Liu Sheng

Zhiyu Xu

The present invention sets forth a method for performing packet combined scheduling of dedicated transport channels for packet services in UMTS downlinks, comprising the following steps: a) prior to each DCH scheduling period, performing pre-selection processing of a transport format combination of each DPCH according to the predetermined restriction conditions for the DCH combined packet scheduling, so as to determine a usable transport format combination set for each DPCH; b) restricting a total downlink transmit power of DCHs for NRT packet services to a schedulable power not exceeding a schedulable power value in the estimation of a total downlink power during said scheduling period; c) based on the fairness of DCH transportation and the QoS requirements of the DCH-borne services, determining weighted values which the respective DCHs correspond to in the optimization of the DCH combined packet scheduling; and d) based on the results of steps a), b), and c), calculating the maximum number of bits which each DCH is schedulable to output, using a 0-1 programming algorithm. The present invention guarantees the fairness, priority and QoS (Quality of Service) of different DCHs and can achieve maximum total data throughput.

Method and apparatus for downlink multi-channel packet combined scheduling in mobile communication system

The present invention provides an apparatus and method of radio transmission of real-time IP packets using header compression technique. In the present invention, the size of a compressed header of an RTP packet can be adapted to length types required by the system by adding a radio link adaptation unit to the existing PDCP entity. The method comprises header-compressing the RTP packets, to obtain header-compressed RTP packets having a plurality of different header compression lengths; pre-configuring header compression lengths and length types required by the system; and PDU-size adapting the plurality of different header compression lengths of the header-compressed RTP packets, so as to comply with said lengths and length types required by the system.

Apparatus and method for radio transmission of real-time IP packets using header compression technique

The application discloses a method for resource management and a method for traffic guidance in a multimode radio network comprising a plurality of mobile communication networks of different modes that share wideband transmission links and sites of centralized base stations, the centralized base stations of the plurality of mobile communication networks being connected to a common base station controller or a common radio networks controller. A mobile terminal is made to perform real-time handover among different mobile communication networks, or, the allocation of the resources among the plurality of mobile communication networks is adjusted in real time, according to at least one of the following factors or the combination thereof: the multimode supporting capability of the mobile terminal, traffics of cells, operation policies and real-time operating conditions of the plurality of networks.

Method for resource management and method for traffic guidance in the multimode radio network

The invention provides an IP switching based radio network controller. The radio network controller comprises a plurality of functional modules, at least comprising: an ATM interface module, an interface management module, a radio signaling management module and a radio bearer processing module, characterized in that, the radio network controller replaces an ATM switch with an IP switching network to achieve data and signaling exchange among the above functional modules in the radio network controller. Said functional modules respectively comprise at least one functional board, and the functions of each of the functional modules are respectively achieved in different functional boards. The radio network controller of the invention has the advantages of low cost, simple configuration and management, and easy to achieve the system.

IP switching based distributed radio network controller

The present invention provides a method for using Differentiated Services (DiffServ) to implement the IP packet classification and the marking of a Differential Service Code Point (DSCP) for the quality of service (QoS) in the wireless access network of the IP-based universal mobile telecommunication system (UMTS). The present invention makes a classification to the data stream which is outgoing from the Iub interface at the Node B side, data stream which is outgoing from the Iub interface at the RNC side and data stream which is outgoing from the Iur interface at the RNC side according to the direction and the process of the respective data streams, and assigns and adjusts the priority of the data stream classified according to the principles for optimizing QoS and radio resources. When the network is congested, the data stream with a high level will have a higher priority than that with a lower level in queue and source occupancy, and the packet with a lower priority in the same queue is discarded. The DiffServ only contains a limited number of service levels and has little condition information, thus easy to be achieved and expanded.

Method for implementing diffserv in the wireless access network of the universal mobile telecommunication system

The present invention discloses a method for resource allocation and rate control of dedicated channels in a Wideband Code Division Multiple Access (WCDMA) communication system, the method being characterized by comprising: a) the step of determining channel states of downlink DCH channels for non-realtime data services; b) the step of determining states of the users using said downlink DCH channels; and the step of correlating the channel states determined in step a) with the user states determined in step b), and dynamically allocating the DCH channels with certain rates to the users in the different User states according to a wireless measurement result measured by a current transmission channel and based on the priority and fairness requirements. According to the present invention, the method effectively realizes the bandwidth resource allocation and rate control, improves the radio resource availability and provides users, to the maximum extent, with a data service bandwidth as high as possible.

Method of wireless channel resource allocation and rate control in a cdma communication system

The present invention provides a method for Voice Handling via Dynamic Home Agents in a Network employing All-IP Architecture, and a system for handling voice call by using this method. The method comprises the following steps: when a first RCU is about to initiate voice call with a second RCU, a first agent address FA will be assigned to a corresponding mobile RCU by the RNC in which the mobile RCU resides; when the RCUs perform the voice call, corresponding Media Gateway (MG) assigns second agent address HAand HAto the first and second RCUs, respectively. Wherein both HAand HAare only valid during this call, and when the call is terminated or dropped, HAand HAwill be released back to the pool of the IP addresses of the corresponding MG. The first and second RCUs implement the voice call based on the assigned first and second agent addresses. This method handles voice calls services via Dynamic Home Agents technique in MobileIP, so as to reduce the number of propagation of the IP header in communication channel in a wireless environment, and enhance system resources utilization efficiency.

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Guangdong, China

Baijun Zhao