Using a common media gateway node and a coordinated codec by an originating and a terminating call control node
A media gateway node and call control node technology, applied in access restriction, connection management, network flow/resource management, etc., can solve problems such as increased processing load, voice data voice quality degradation, and failure to realize network bandwidth saving, etc., to achieve Enhanced voice quality, high voice quality effect
Inactive Publication Date: 2015-07-22
ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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[0030] However, if Figure 12 The illustrated establishment of voice data transmission can also result in unnecessary consumption of the processing capacity of the media gateway node MGW-1 and degradation of the voice quality of the transmitted voice data
Since both contexts C1 and C2 are now located in the same media gateway node MGW-1, no network bandwidth savings is achieved, as PCM to PCM is used in this media gateway node MGW-1 for access and end codecs and for encoding to CS and Decoding back to PCM can degrade voice quality and will increase processing load
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[0097] The illustrations in the figures are schematic. In different drawings, similar or identical elements are provided with the same reference signs.
[0098] According to an embodiment, a mechanism for enhancing out-of-band transcoder control procedures for optimal media gateway resource usage is provided.
[0099] According to an embodiment, a call between a calling party and a called party may be established by a terminating call control node. Voice data may be sent via a common media gateway node available to both the calling party and the called party, wherein, if possible, the codec of the voice data in the common media gateway node may remain unchanged.
[0100] In order to establish data transmission during a call, the terminating call control node may receive first information and second information from the originating call control node, the first information and the second information respectively indicating at least one media gateway node available for sending d...
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A method for a call control node (MSC-S2) for setting up transmission of voice data from a calling party (BSC1) towards a called party (BSC2) via at least one media gateway node (MGW-1, MGW-2) is provided, said call control node (MSC-S2) acting as a terminating call control node being adapted for communicating with the at least one media gateway node (MGW-1) and with an originating call control node (MSC-S1), the method comprising receiving first information from the originating call control node (MSC-S1) indicative of at least one media gateway node (MGW-1, MGW-2) usable for transmitting the voice data, receiving second information from the originating call control node (MSC-S1) indicative of a codec (PCM) to be used from the calling party (BSC1) towards the at least one media gateway node (MGW-1, MGW-2) usable for transmitting the voice data, determining whether the voice data is transmittable by the at least one media gateway node (MGW-1, MGW-2) towards the called party (BSC2) encoded by said codec (PCM)1 determining whether a common media gateway node (MGW-1) is usable by both the originating call control node (MSC-S1) and the terminating call control node (MSC-S2), sending first backward information to the originating call control node (MSC-S1) indicative of the said codec (PCM), and sending second backward information to the originating call control node (MSC-S1) indicative of the common media gateway node (MGW-1).
Description
technical field [0001] The present invention relates to the field of telecommunications, in particular to a method for allowing a call control node to establish voice data transmission from a calling party via at least one media gateway node to a A terminating call control node for the transmission of voice data to a called party, a program element adapted to perform such a method, and a computer-readable medium comprising such a program element. Background technique [0002] Sending data from the calling party to the called party via the communication network is based on using a node adapted to carry out the sending of data from the calling party to the called party. The data to be sent from the calling party to the called party are exchanged in the user plane of the transmission path, wherein a node is arranged in the user plane via which the data can be exchanged. The transmitted data is generally encoded with a specific codec. In the control plane of the transmission p...
Claims
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IPC IPC(8): H04W48/20
CPCH04W28/06H04W76/022H04W88/16H04W76/12
Inventor 苏布拉塔·慕克吉郑会炜
Owner ERICSSON (CHINA) COMMUNICATION COMPANY LTD