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Method and system for frame size adaptation in real-time transport protocol

A technology of transmission protocol and sample size, which is applied in the field of communication network and can solve the problems of increasing transmission delay between MS and network controller

Active Publication Date: 2011-06-08
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One disadvantage is that the larger number of voice / data frames in each RTP package increases the delay in transmission between the MS and the network controller

Method used

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  • Method and system for frame size adaptation in real-time transport protocol
  • Method and system for frame size adaptation in real-time transport protocol
  • Method and system for frame size adaptation in real-time transport protocol

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Embodiment Construction

[0026] figure 1 is a simplified block diagram of an unlicensed radio access network suitable for implementing the invention. The unlicensed radio access network enables mobile stations to communicate with traditional mobile communication networks, such as core network parts of GSM networks, and via such other communication networks via unlicensed radio interfaces. The term "license-free radio" denotes any radio protocol that does not require the operator operating the mobile network to have obtained a license from the appropriate regulatory body. In general, such unlicensed radio technologies must be low power and thus of limited scope compared to licensed mobile radio services. The benefit of this lower power is that the battery life of the mobile station is longer. Furthermore, unlicensed radios may be broadband radios due to the limited range, thus providing improved voice quality. The radio interface may employ any suitable unlicensed radio protocol, such as Wireless LA...

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Abstract

A system and method for adapting circuit-switched payload transport between a mobile station, MS, (30) and an unlicensed-radio access network utilizing the Real-Time Transport Protocol, RTP. The MS (30) and an access network controller (103) negotiate the number of speech / data frames per RTP packet during the assignment of a traffic channel. The network controller notifies (62) the MS of a requested or minimum acceptable sample size, and the MS utilizes that sample size, if able, to send (86) RTP packets to the network controller. If the MS is not capable of utilizing that sample size, the MSutilizes the closest sample size that the MS can support to send (89) packets to the network controller. The network controller then calculates (90) the sample size utilized by the MS and utilizes (91) the calculated sample size in transmissions to the MS. Thereafter, if network conditions change, another negotiation is initiated (94-97) to adapt the sample size to the changed conditions.

Description

technical field [0001] The present invention relates generally to communication networks, and in particular to a system for adapting circuit-switched (CS) payload transmission between a mobile station and an unlicensed radio access network using the real-time transport protocol (RTP) and method. Background technique [0002] When voice data is transmitted over an IP network, the selected transmission protocol is generally the Real-time Transport Protocol (RTP). This protocol is traditionally used to transport different kinds of simultaneous media, such as video or voice encoded with different codecs. RTP is carried over User Datagram Protocol (UDP). To this end, the endpoints of an active voice session utilizing RTP are typically identified using an IP address, ie a network address, and a UDP port or transport level identifier. The use of RTP enables one or more speech samples to be carried in one RTP package. [0003] Unlicensed radio services use unlicensed radio frequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56H04W88/00H04W88/12H04W8/22H04W16/14H04W28/18
CPCH04W16/14H04L29/0651H04W84/105H04W8/22H04L29/06517H04L65/608H04L65/607H04L29/06027H04W28/18H04L65/65H04L65/70H04L65/752
Inventor J·威克伯格T·奈兰德H·尼斯卡T·博尼法尔
Owner TELEFON AB LM ERICSSON (PUBL)