WO2002093842A2

WO2002093842A2 - Method and device for transmitting data via air interface channels of a communication system

Info

Publication number: WO2002093842A2
Application number: PCT/DE2002/001731
Authority: WO
Inventors: Eva-Maria Lanig
Original assignee: Siemens Aktiengesellschaft
Priority date: 2001-05-16
Filing date: 2002-05-14
Publication date: 2002-11-21
Also published as: WO2002093842A3; DE10123851A1

Abstract

The invention relates to a method for transmitting data via air interface channels, between a first station (UE) and a network-side station (B) of a packet-switching communication system (UMTS), whereby data of a single service corresponding to different allocation criteria is transmitted via the air interface (V). In order to transmit the data in a more efficient manner, the data can also be transmitted on the network side in channels or connections which differ correspondingly.

Description

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to use different protection mechanisms (UEP: Unequal Error Protection). As a result, the air interface can be used with optimized bandwidth.

For example, in the case of AMR-coded speech, 3 bits are transmitted via a UMTS air interface for one bit of the most important bit classes (class A bit), 1/3 coding being used, while for one bit of a medium-important bit class (B bit ) two bits are transmitted (1/2 coding) and for a bit of the lowest bit class (Class C bit) only the useful bit itself is transmitted without redundancy (1/1 coding).

On the network side, the three different channels of the air interface for the terrestrial part are combined into a single physical channel. For network-based forwarding, procedures are e.g. used in UMTS according to ATM AAL2 (ATM adaptation layer no.2) or circuit-switched methods. In particular, this enables the use of standardized and existing network facilities and network methods for connection-related voice transmission.

For voice transmission through networks, the transport of which is based on the Internet protocol (IP) and the signaling protocols for establishing a connection, e.g. using the Session Initiation Protocol (SIP), a data stream is generated from one end device to the other end device, which is no longer analyzed by the network element.

Disadvantageously, the data cannot currently be specially prepared for transmission on the air interface and must be transmitted in a channel on the network side and on the air interface. This means that bandwidth-optimized transmission via the air cut parts is not possible.

The object of the invention is to provide a method and a device for simplified and efficient data transfer. ω) MP ¹

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streams or connection channels with a high priority are forwarded faster or more reliably than less important partial data. This can be done alternatively or in combination with a corresponding coordination and synchronization of partial data streams in the network.

In addition to corresponding adaptations of the functionality in network-side devices, a corresponding control device is expediently provided in the data terminal devices, in particular subscriber stations, which is designed to process the data obtained there according to a method specified above. In the simplest case, an existing control device with additional functionality can be set up by appropriate programming.

An exemplary embodiment is explained in more detail below with reference to the drawing. It shows:

Fig.l schematically different facilities of a radio communication system and logical connections in various process steps in connection with the establishment of a data transmission connection via an air interface.

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In a manner known per se, a radio interface for the requested data service is subsequently provided in a fourth method step, in which case three different channels would be provided on the radio interface in the present case. These three channels would be assigned the data bits of a particular one of the three quality of service, which would require a corresponding data conversion for the transmission via the radio interface, i.e. especially the channel coding listed above. On the network side, the three data streams are forwarded via three channels now also made available in the network. For terrestrial or network-side transmission according to the Internet protocol IP, these can optionally be combined in a single logical session with three physical channels. A conversion of the data received via the radio interface on the network side into a single data stream is advantageously no longer absolutely necessary and is not possible according to today's standards. In the case of a transmission in the reverse direction, data are already transmitted as three data streams on the network side in accordance with the Internet protocol IP and transferred to the radio interface.

In order to avoid a bandwidth-consuming connection between the radio interface and network devices in this way, several special transmission channels are thus requested and set up via the radio interface and the network in the present exemplary embodiment. This requires no or only minor adjustments to the functions and procedural steps described in previous standards.

Instead of transmitting the data via the radio interface in its own format and then forwarding it in a packet-switched manner via the further communication network, the data should advantageously already be provided in the subscriber-side station in such a way that it can already be transmitted via the air interface V in a packet-switched manner, that is to say especially the conditions of the internet o co IV ⁾ P »cn o Cn o Cn o cn

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<J P- 0 0 PJ φ Φ Φ PJ P- P- O: rt cx Hi * d PJ: o Q Hi cn 0 rt φ P- P- P- cn cn 0:

Φ rt rt 0 rt 0 P ^> 0 rt φ 3 P- Z 0: P- 0 cn cx o Ω cx P- cn rt φ ⁾ 0

0 Φ P- 0 P- ö φ P- iP φ Z φ Φ er φ LQ rt Z P> 0 er P ¹ O α P- LP g

Hi 0 L O cn PJ P- Φ φ P- 0 0 P- Φ φ 0 α Φ 0 0 LP PJ LP φ 3 φ <

PJ cn Φ z 0 0 O et rt P- φ 0 l_l. 0 cn P ^ rr cn ιQ P- P- 0 Φ cn φ rt Φ 0 Φ H Φ er rt 0 o JH Φ Φ 0 0 cx φ x p- Φ s: P "cn 0 0 ιQ Φ cn Φ 0 x 0 cn 0

0 0 er Ω P ¹ 0 et Φ Z> Ω 0 z φ P- Φ rt P "cx er Ω 0 Φ LQ Ω cn φ O: CΛ Φ tr P φ tΛ cx φ er φ P- cn P ¹ Φ P- Φ tr cn CΛ 0 Φ er Ω

3 rt P- P- 0 tsi Z rt φ P- P- φ ** 1 0 cn rt P- 0 0 Ω 0 ß Φ

0 er P- rt rt cn P- er

Φ PJ φ φ • 0 Φ <PJ 0 P ¹ 0 0 0 cx φ • Φ PJ er Φ Φ Φ 0 P ⁾ > φ Φ P-

0: rt Φ P- 0 Φ rt cn x cn 0 φ LQ Ω Φ tr 0 • tr O: rt 0 rt cx Φ er g P- P- φ ü X CX P- Φ rt fV 0 ι-3 ≥i rt tr P- Φ rt 3 P- cn CSl φ cx

Φ 3 O Φ P- φ Φ Φ er O 0 cn 3 Φ rt • o Φ Φ rt N H Φ O Hi rt 0 Φ

0 Z 0 Φ 3 0 0 0 P- 0 Hi << P ¹ p- 0 0 CX cx «0 • 0 <1 0 P φ 0

PJ φ V 0 er 0 P- P ¹ o 1 Φ PJ Φ Φ PJ O o 0 er cn 0 PJ cx 0 P ≥J er ert cx PJ PJ Ω 3 Φ 0 0 0 0 0 Hi tö CX 0 0 d 0 P- 0

P- CX P- Φ Φ <PJ Φ z 0 0 0 tr 0 φ o S ^ P- x PJ: Hi • φ N rt M 0 0 tö rt φ φ Φ et 0 φ 0 P- φ 0 cn 0 ≥! _{^ *} 0 X o 0 tr φ P ¹ φ 0 0 Φ 0 X H- P-

P ¹ NV 0 0 LQ Φ O Φ φ cx - »P- Φ 0 cx LP 0 <LP • rt LP

^ rt φ cn O: er P- 0 0 r P- 0 rt CX 0 0 P- cn ι-3 φ PJ CΛ cn cn o cn 1 cn

0 -> 3 rt 9 P- cn Φ PJ φ N PJ 0 φ cx er 0 Hi 0 cn P- Z Ω 0 er Pi rt

0 • d PJ 3 0 rt tr <0 cn Φ 0: cn Cd 0 PJ φ PJ 0: LQ φ er P ¹ φ P ¹ Φ

IV CX Hi et P ¹ cx 3 o Ω Ω 0 er 0 cn P- 0 cn 0 0 0 CΛ CΛ 0 P- P- P- P- PJ cn P- P> P- P- 0 Φ Φ 0 er Φ 0 er P ¹ 0 cn P- cn rt p- PJ cn φ φ cn cn α

Ω Φ 0 O Ω 0 P- 0 0 <! 0 α P. Φ x iQ LP ^• d cx J rt P- φ LP Ό cn P- er LP 0 er LQ 0 cn <μ. φ rt P- P- 0: Φ CX Φ o P- rt N P- -> φ P- Φ Φ

0 Φ φ φ Φ μ. o Φ 0 0 P- φ er 0 P- 0 0 φ P- 0 cn PJ P- 0 φ 0 0

P- 0 0 0 0 cn p- Φ 0 tr er PJ 0 tö Φ φ rt O 0 P- 0 Ω α cn rt et P ⁾ <0 O rt cn Φ P- LQ lO φ 0 0 cn TJ 0 ι-3 0 LQ φ Hi er φ O rt et cn ö er Φ cn P ¹ p- Φ Φ 0 0 Φ CX 0 cx rt 0 Φ 0 φ Φ Φ cn 0 Φ zx Φ cn • d J Φ 0 * d Ω P P- cx φ JJ 0 rt cn o rt P- 0 Φ 0 CX ö φ φ rt H et Hi 0 er Φ 0 z 0 0 0 PJ Φ NNP ¹ p- 0 Φ PJ 0 0 3

Φ Φ Φ x PJ 0: φ 0 O φ μ. 0 tr P- Hi LQ 0 Hl φ CX 0 0 iP 0 kills O:

H Ω 0 P- tr 0 0 CX 0 0 LP N CΛ rt 0 cn 0 α er ⁾ 0 P ¹ P- φ Φ LP LP er φ 0 LQ CΛ Φ P. z rt PJ: m 0 Ω P> 0 PJ rt cx φ s: rt 0 0 φ

Φ φ P- cn Φ P ¹ ^ rt 0 0 <1 • PJ rt P- LQ er 0 0 0 Φ P- Φ & 1 3 P-

0 0 Φ 0 P- PJ PJ φ O rt 0 P- cn φ rt 0 x et 0 P-: Ω

Ω rt 0: et fr 0 tr P- x 0 fr φ * d 0 cn φ 0 cx φ z I o

<J cx CX 0 So er φ PJ ΪT P "p- er NJ Φ O Φ P- O: CX o rt 3 0 Φ 0 PJ φ er cx 0 φ 0 ^• » o Φ cn 0 Φ PJ 0 Ω 0 P ¹ 0 PJ P- 0 ιQ 0 P. cn 0 φ PJ

P- φ et 0 J 0 0 Φ P- 0 Φ tr 0 P- rt 0 Φ O: -3 cn 0 cn P- 0 cx

0 3 cn et cx 0 z P- 0 er 0 σ rt Φ Ω 0 Hl 3 Φ • d er 0 Φ u 0 Ct φ s: ^» d Hi PJ Hi φ cx et Φ φ Φ P- 0 0 er Φ • < J Φ rt Φ iP 0 PJ φ Φ 0

H er H Φ cn O 0 M P- P- P- 0 P- X φ 0 cn rt Φ N o P- cn rt 0 0 φ

LP P- Φ 0 0 0 Φ ιQ 0 et P- 0 LP cn rt N K 0 PJ rt 1 0 Φ Φ 0 φ 1 0 ≥. 1 Q cn Φ Φ φ cn φ o Φ P- er σ O cx 0 0 0

N 0 rt Φ cx Φ Φ 0 rt rt 0 3 H 0 P- LP Φ 1 Φ 1 1 u

0 Φ rt P- 1 Φ P- 0 Φ 1 0 PJ

0 N φ rt 1 1 1

ω U) r N> P ¹ P ¹

Cπ o cπ Cπ o cπ

co IV) fO P ¹ P ¹ o Cπ o Cπ o Cn

0 y

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0

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Ω tr

Claims

claims

1. Method for data transmission via air interface channels between a first station (UE) and a network-side station (B) of a packet-switching communication system (UMTS), in which data from a single service according to different allocation criteria in different channels or connections via the air interface (V) are transmitted, characterized in that the data are also transmitted on the network side from / to further network-side devices in different channels or connections.

2. The method according to claim 1, in which data of different partial data streams, data streams, priorities and / or speech content portions of the service are used as the allocation criterion.

3. The method according to claim 1 or 2, wherein one or more of the connections or channels on the air interface (V) are extended on the network side.

4. The method according to claim 3, in which the plurality of connections or channels for partial data streams are managed on the network side as a single physical channel or a single session.

5. The method as claimed in claim 1, in which - a plurality of data to be transmitted via the air interface (V) is broken down and / or encoded in the first station (UE) for transmission via a plurality of connection channels or in the first station ( UE), data received over the air interface (V) over a multiplicity of connection channels are assembled and / or decoded in this first station (UE) and - The corresponding reverse processing is carried out only at a remote end station.

6. The method according to any one of the preceding claims, in which data to be sent via the air interface (V) as IP

Data is provided and transferred.

7. The method according to any one of the preceding claims, in which separate error corrections are applied to data to be sent via the air interface channels before sending or after receiving in the first, subscriber-side station (UE) per channel or connection.

8. The method according to any one of the preceding claims, in which partial data streams are coordinated and / or synchronized on a plurality of connection channels in network-side and / or end-side stations (UE) and transport devices (B, RNC, SGSN, GGSN, MGW).

9. The method according to any one of the preceding claims, in which data to be transmitted via the air interface channels and network-side devices (B, RNC, SGSN, GGSN, MGW) are separated into partial data streams of different priority.

10. Device in a station or device of a packet-switching communication system (UMTS) with an air interface (V) between at least a first station (UE) and a network-side station (B), with data from a single service corresponding to different allocation criteria in different channels or Connections are transmitted over the air interface (V) and

- The device has at least one control device for managing and processing the data to be transmitted, characterized in that the control device also for the network-side transmission of the data in different channels or connections according to a method is formed according to one of the preceding claims.