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Transmission method, transmission device and receiving device for relay link

A relay link and transmission method technology, applied in the field of transmission devices and receiving devices, can solve the problems that the resources of the backhaul link cannot be effectively used, cannot include and distinguish instructions at the same time, and cannot fully adapt to transmission, etc.

Active Publication Date: 2011-03-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In the relay system, the transmission of MAC SDU and MAC CE on the access link between RN and R-UE can follow the above-mentioned existing MAC PDU format between eNB and UE, but the backhaul link between eNB and RN In fact, the existing MAC PDU format of LTE cannot fully meet the requirements of MAC SDU and MAC CE transmission between eNB and RN. The reason is that: on the one hand, the original MAC PDU encapsulates the MAC SDU and MAC CE of the same UE. All the information contained in belongs to the same UE; while the transmission on the backhaul link may contain U-MAC SDUs of multiple R-UEs, R-MAC SDUs and R-MAC CEs between RN and eNB. In the above-mentioned existing MAC PDU format, there will be a problem that the information indicating the RN and multiple R-UEs cannot be included and distinguished at the same time
On the other hand, if the U-MAC SDU of multiple UEs under the RN and the R-MAC SDU and R-MAC CE between the RN and the eNB are used on the backhaul link, if the format of the above-mentioned existing MAC PDU is used respectively Independent encapsulation and transmission, there will be problems that the resources of the backhaul link cannot be effectively utilized, and at the same time, effective scheduling and transmission cannot be performed according to the needs of each UE or RN
In short, the two problems existing on the backhaul link of the relay system will affect the transmission performance on the relay link
At present, for the above two problems, no effective solution has been proposed to improve the transmission performance on the relay link

Method used

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  • Transmission method, transmission device and receiving device for relay link
  • Transmission method, transmission device and receiving device for relay link
  • Transmission method, transmission device and receiving device for relay link

Examples

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example 1

[0223] The eNB encapsulates 5 MAC SDUs belonging to 5 R-UEs under the RN, a MAC SDU of the RN, and 3 items of R-MAC CE information into an R-MAC PDU and transmits it to the RN on the relay link. - UEs are respectively represented as R-UE1 to R-UE5, and three R-MA CEs are respectively represented as R-MACCE1 to R-MAC CE 3, according to the R-MAC PDU scheme 1 proposed by the present invention, the R-MACPDU is obtained, as Figure 22 shown.

[0224] In the header part of the R-MAC PDU, respectively encapsulated in sequence:

[0225] 3 R / R / E / LCID subheaders corresponding to R-MAC CE, respectively corresponding to R-MAC CE 1 to R-MAC CE 3 in the payload part, the subheader format is as follows Figure 5 shown.

[0226] 6 R / R / E / LCID / F / L / Node ID sub-headers corresponding to the MAC SDU, corresponding to the 5 MAC SDUs of the payload part R-UE 1 to R-UE 5 and the eNB transmitted to the RN 1 MAC SDU. Among them, the C-RNTI of the corresponding R-UE is used as the UE ID identifier, ...

example 2

[0230] RN encapsulates 5 MAC SDUs of 4 subordinate R-UEs, 1 MAC SDU and 2 items of R-MAC CE information transmitted by itself to eNB into one R-MAC PDU and transmits it to eNB on the relay link. The R-UEs are denoted as R-UE1 to R-UE4, and the two R-MAC CEs are denoted as R-MAC CE1 and R-MAC CE 2, among which R-UE 3 has 2 MAC SDUs, and the other R-UEs each There is a MAC SDU, according to the R-MAC PDU scheme one proposed by the present invention, the R-MAC PDU is obtained, such as Figure 23 shown.

[0231] In the header part of the R-MAC PDU, respectively encapsulated in sequence:

[0232] 2 R / R / E / LCID subheaders corresponding to R-MAC CE, respectively corresponding to R-MAC CE 1 to R-MAC CE 3 in the payload part, the subheader format is as follows Figure 5 shown.

[0233] 6 R / R / E / LCID / F / L / Node ID sub-headers corresponding to the MAC SDU, respectively corresponding to 6 MAC SDUs of the payload part R-UE 1 to R-UE 4 and RN. Among them, other UE IDs that can uniquely iden...

example 3

[0237] The eNB encapsulates 6 MAC SDUs and 3 items of R-MAC CE information belonging to 2 R-UEs under the RN into an R-MAC PDU and transmits it to the RN on the relay link. The two R-UEs are respectively denoted as R -UE 1 and R-UE 2, the three R-MAC CEs are denoted as R-MAC CE1 to R-MAC CE 3 respectively, among which there are 2 MAC SDUs belonging to R-UE 1 and 2 MAC SDUs belonging to R-UE 2 There are 4, according to the R-MAC PDU scheme two that the present invention proposes, obtain R-MAC PDU, as Figure 24 shown.

[0238] In the header part of the R-MAC PDU, respectively encapsulated in sequence:

[0239] 3 R / R / E / LCID subheaders corresponding to R-MAC CE, respectively corresponding to R-MAC CE 1 to R-MAC CE 3 in the payload part, the subheader format is as follows Figure 5 shown.

[0240] 2 S sub-headers, corresponding to R-UE 1 and R-UE 2 respectively, the S sub-header of R-UE 1 is in front, indicating that R-UE 1 contains 2 MAC SDU sub-headers in this R-MAC PDU heade...

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Abstract

The invention discloses a transmission method for a relay link. The method comprises the following step of: after packaging a relay MAC (Medium Access Control) control element (R-MAC CE) to be transmitted between an evolved node B (eNB) and a relay node (RN) and an MAC service data unit (MAC SDU) attributed to all nodes in an effective load of the R-MAC protocol data unit (R-MAC PDU), transmitting the R-MAC PDU on a return link between the eNB and the RN. The invention also discloses a transmission device and a receiving device for the relay link. In the transmission device, a packaging unit is used for packaging the R-MAC CE to be transmitted between the eNB and the RN and the MAC SDU attributed to all the nodes in the effective load of the R-MAC PDU and transmitting the R-MAC PDU to a transmission unit. By adopting the method and the device of the invention, the transmission performance on the relay link can be improved.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a transmission method, a transmission device and a receiving device for a relay link in a mobile communication system containing a relay station (RN, Relay Node). Background technique [0002] At present, the development of mobile communication requires support for higher transmission rate, better signal coverage and higher resource utilization. In order to achieve a high transmission rate, the communication system will use a higher frequency band to transmit signals, but on the other hand, high frequency will bring large path loss, which will affect network coverage. In order to effectively improve network coverage, improve network capacity and resource utilization, relay technology has become a hot research direction in mobile communication systems. [0003] In the mobile communication system that introduces RN, the user terminal (UE, User Equipment) has two ways to...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04B7/15
CPCH04W84/047H04W28/06
Inventor 杨瑾梁枫毕峰袁明吴栓栓
Owner ZTE CORP
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