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Broadcast hand-over in a wireless network

A broadcast channel and cell switching technology, applied in the field of broadcast transmission, can solve problems such as increased delay, waste of CPU time, packet loss, etc.

Inactive Publication Date: 2010-05-12
NOKIA TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Time spent parsing these parameters during handover can add latency, waste CPU time, and cause significant packet loss

Method used

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  • Broadcast hand-over in a wireless network
  • Broadcast hand-over in a wireless network
  • Broadcast hand-over in a wireless network

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Embodiment Construction

[0015] In the following description of various embodiments, reference is made to the accompanying drawings which form a part hereof, and show by way of illustration various embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized and various structural and functional modifications may be made without departing from the scope of the present invention.

[0016] figure 1 Illustrate a wireless communication network 10 according to one embodiment of the present invention. For simplicity, the wireless communication network 10 includes a pair of adjacent wireless broadcast cells 12, 14, and a wireless mobile device entering a second cell 14 from the first cell 12 16 (eg, mobile phone, PDA, mobile terminal, etc.). For example, the wireless network 10 may be a second generation mobile multimedia network, such as a Global System for Mobile Communications (GSM) network. However, networks with higher bandwidth are preferred, such...

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Abstract

A system and method are disclosed for providing multicast channel handover in a mobile device (16) within a mobile network 10. First and second transmitters (18, 20) within first and second cells (12,14) broadcast datagrams associated with a logical identifier according to link-level access parameters common to the first and second transmitters (18, 20). A mobile device (16) receives the broadcastdatagrams for the logical identifier from the first transmitter (12) by configuring the common link-level access parameters. As part of handover from the first cell(12) to the second cell (14), the mobile device (16) continues receiving the broadcast datagrams from the second transmitter (20) by maintaining the common link-level access parameters. In one embodiment, the datagrams are IP datagramstransmitted in an MPEG2 transport stream. The link-level access parameters may include time slice parameters associated with burst transmissions from the first and second transmitters (18,20) according to an embodiment of the invention.

Description

technical field [0001] The present invention relates to broadcast transmission of audio data, video data, control data or other information, and more particularly to a system and method for providing broadcast switching in a wireless network. Background technique [0002] The popularity of video streaming, data streaming, and broadband digital broadcast programming in wireless network applications is gradually increasing. Likewise, wireless data packets can be sent to multiple receivers (eg, network-enabled mobile devices) simultaneously, which is known as multicasting or datacasting. Currently, systems such as WLANs, Digital Video Broadcasting (DVB) systems, and Digital Audio Broadcasting (DAB) systems can be used to transmit multicast data. In the future, UMTS or GPRS networks may also have the ability to support IP multicast. [0003] When a network-enabled mobile device receives multicast data (eg, an IP datagram) as part of a broadcast service, it must parse the datag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W36/08
CPCH04W36/08H04W72/005H04W36/0007H04W72/30H04W8/02H04W36/22
Inventor 托尼·佩拉阿里·珀科南
Owner NOKIA TECH OY