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Data transmission method and device

A data transmission method and data technology, applied in network traffic/resource management, machine-to-machine/machine-type communication services, electrical components, etc., can solve problems such as large signaling overhead and lower system efficiency

Active Publication Date: 2011-12-28
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to send these data, the network and the MTC terminal also need to pass such as figure 2 In the signaling process shown, the DRB / RB and S1 / Iu bearers are established before data can be transmitted through the DRB / RB and S1 / Iu bearers. figure 2 The signaling flow shown requires a large signaling overhead, which reduces system efficiency

Method used

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  • Data transmission method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0095] This embodiment is the process of carrying a dedicated preamble in a paging message, such as Figure 5A Shown:

[0096] Step 1: When the network side (such as the MTC server) has a small amount of small data to be delivered to the UE, send a small data transmission request carrying small data to the MME;

[0097] Step 2: The MME sends the small data and the UE's identity S-TMSI to the relevant base station through a paging message. The paging message can also carry small data transmission characteristic information to inform the base station that this data transmission needs to use the non-established The data transmission mode of the RRC connection;

[0098] Step 3: The base station saves relevant information and pages the terminal through a paging message, and the paging message carries a dedicated preamble;

[0099] Step 4: The terminal uses a dedicated preamble to initiate random access, that is, sends Msg1;

[0100] Step 5: The base station returns a random acce...

Embodiment 2

[0123] This embodiment is the process of carrying the scheduling RNTI in the paging message, such as Figure 5B Shown:

[0124] Except for steps 3 to 6, other steps are the same as those in Embodiment 1, and will not be repeated here.

[0125] Step 3: The base station saves relevant information and pages the terminal through a paging message, which carries the scheduling RNTI;

[0126] Step 4: The terminal initiates random access using the contention random access preamble, that is, sends Msg1;

[0127] Step 5: The base station returns a random access response message (ie Msg2) to the terminal, which carries the uplink TA and the allocated cell RNTI;

[0128] Step 5a: After receiving Msg2, the terminal sends the scheduling RNTI to the base station in Msg3. If there is uplink data to be transmitted, BSR can be carried in Msg3;

[0129] Step 6: After receiving the Msg3 carrying the scheduling RNTI, the base station releases the RNTI carried in step 5 according to the uplink r...

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Abstract

The invention discloses a data transmission method and equipment, which relate to the technical field of the wireless communication, and are used for reducing the signaling expense of a system. A radio network temporary identifier RNTI is scheduled by a base station and is transmitted to a terminal; the base station dispatches an uplink resource and / or a downlink resource to the terminal by utilizing a physical downlink control channel PDCCH scrambled by the RNTI, the uplink data transmitted by the terminal is received on the dispatched uplink resource, and the downlink data is transmitted to the terminal on the dispatched downlink resource. The PDCCH scrambled by the dispatched RNTI is monitored and used by the terminal, and the resource dispatched by the monitored PDCCH is used for transmitting the uplink data and / or for receiving the downlink data. Due to the adoption of the method, the signaling expense of the system can be effectively reduced.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a data transmission method and equipment. Background technique [0002] Long Term Evolution (LTE) system network architecture such as figure 1 As shown, it includes the access point name (Access Point Name, APN) node, packet data gateway (Packet Data Network GW, P-GW), serving gateway (Serving GW, S-GW), mobile management entity (Mobile Management Entity) , a base station (eNB) and a user terminal (UE). [0003] In order to facilitate the development of new services, the LTE system adopts the design method of separating the user plane and the control plane, and the signaling of the control plane and the bearer of the user plane are respectively responsible for by independent network elements (namely MME and S-GW). The main functions of MME are to establish Non Access Stratum (Non Access Stratum, NAS) signaling, ensure the security of NAS signaling, establish cross-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/0446H04W72/0413H04W4/005H04W28/06H04W72/1205H04W68/00H04W72/12H04W72/21
Inventor 张惠英全海洋阮航
Owner DATANG MOBILE COMM EQUIP CO LTD
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