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US 2009/0023453 A1Published application
Owa converged network access architecture and method
OwnerJianhong HU, Willie LUinventors
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Abstract
As no single wireless network can provide both broadband high-speed radio transmission and seamless full mobility for commercial wireless communications in terms of technology, cost, spectrum and performance, a new wireless converged network access infrastructure based on Open Wireless Architecture (OWA) has been disclosed, wherein the spectrum is separated into low spectrum band (LSB) for wide area seamless mobility networks and high spectrum band (HSB) for very high-speed broadband wireless access systems in order to maximize the spectrum utilization efficiency for the converged multiple wireless access networks of the fully service-oriented wireless communications including multimedia broadcast and multicast service.
Claims20
An OWA (Open Wireless Architecture) Converged Access Network Architecture, said system comprising:
- a) OWA Gateway utilizing as the network access router for assigning IP (Internet Protocol) addresses to access the backbone IP core network, and containing the different radio transmission technology (RTT) user plane functions and Link Layer Control (LLC) functions for the heterogeneous open access networks,
- b) OWA Common Access Point (CAP) providing common radio transceiver functionalities with the Mobile Terminal (MT) through user plane and control plane independently, and connecting with the IP (Internet Protocol) core network directly by said Gateway to simply the complexity of the access networks and decrease the access time delay by minimizing the number of access nodes for the traffic flow, as well as transforming the data format between wireless and wired networks and packetting said IP flows into wireless frames before transmitting onto different air interfaces and vice verse,
- c) OWA Control Domain (CD) enabling an open service control and mobility management platform to load or extend services and add new services flexibly, and to execute corresponding management in the converged services and networks, and supporting control plane in said CAP with control signals through IP core networks and with said RTT bearer functionalities including cooperative open radio resource management (CORRM), said RTT selection, spectrum sharing and local balance for different access systems of open wireless architecture (OWA) convergence infrastructure, and
- d) OWA Mobile Terminal (MT) supporting open air interfaces of different said RTTs based on the OWA convergence framework.
1 more element
An OWA Common Access Point (CAP) Converged Access Control Architecture, said system comprising:
- a) OWA Cooperative Manager supporting said CORRM functionalities by cooperating with said OWA-CD or acting as the function of said OWA-CD to support local RTT medium access control (MAC), relay MAC or converged MAC as well as point-to-point (P2P) MAC for said MT's direct communications, and provide proper strategy for other MAC entities with required QoS (quality of service) for data flows in consistent with the different network formats and modes for the said OWA MT of open air interfaces, and managing the converged access control schemes including inter-system network selection and intra-system access control within the selected access network,
- b) OWA Controlling Entity receiving the control signaling from the OWA framework, the upper layer and said OWA cooperative manager to control the traffic transmission in user plane and communicate with other MAC modules,
- c) OWA Classify/Assemble/Segmentation receiving the packets from upper layer and classifying the packets according to said OWA cooperative manager and controlling signaling as well as segmenting the large packets into proper MAC protocol data unit size,
- d) OWA Priority handling module scheduling the traffic packets queuing in the buffer and receiving the control signaling from said OWA cooperative manager and said OWA controlling entity,
- e) OWA Broadcasting and Multicasting module handling the system' broadcast and multicast information management, and providing multicasting service for the converged wireless and mobile access networks,
- f) OWA Multiplexing module providing proper multiplexing schemes to traffic and control packets, and
- g) OWA HARQ module providing proper Hybrid Automatic Repeat reQuest (HARQ) scheme managed by said OWA cooperative manager and said OWA controlling entity.
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An OWA Time Division Duplex (TDD) Converged Medium Access Control (MAC) Frame Structure, said system comprising:
- a) Uplink Access Slot utilized for said MT to choose random access channel (RACH) to send the access requests for the intra-system adaptive access control scheme,
- b) Uplink Transmission Slots utilized for said MT to send data packets, and further divided into several mini-slots as the group of basic transmission unit (BTU) within each transmission slot in order to support dynamic resource allocation,
- c) Downlink Acknowledgment (ACK) Slot utilized for said CAP to send the ACK message for said MT's access request and the results of resource allocation, as well as the MCCH (Multimedia broadcast and multicast service Control Channel) message for MBMS (Multimedia Broadcast and Multicast Service) traffic,
- d) Downlink Transmission Slots utilized for said CAP to send data traffic packets to said MT,
- e) Downlink Broadcast and Multicast Slot utilized for said CAP to send said MBMS traffic,
- f) Guard Time between Uplink and Downlink transmission, and
- g) OWA Guard Time Optimizer managing the location and length of the TDD transmitting and receiving switch point critical for TDD transmission for said CORRM, said MAC, transmission convergence and spectrum utilization.
4 more elements
Dependencies are inferred from the claim text.