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Data issuing method and system

A technology of data and data volume, applied in the field of data distribution, can solve the problems of high signaling priority, uncertain interaction delay, multiple underlying transmission resources, etc., to avoid the hidden danger of windowing

Active Publication Date: 2012-09-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Disadvantages of the single-user scheduling scheme: the actual physical resources of the MACc and MACd entities are uncertain, and their interaction delay is also uncertain. Using this scheme is easy to cause the downlink Iub to go out of the window; there may be a deadlock situation. MACd->MACc data volume notification message or MACc->MACd TFC selection result indication message is discarded, then the downlink data packet cannot be sent smoothly; MACd->MACc data volume notification message occupies more underlying transmission resources, especially in multiple FACH In the case of concurrent users
[0009] Disadvantages of the multi-user scheduling scheme: the round-robin scheduling problem of the same priority is not considered. If there are two users with the same priority and the first user always has data, the second user is always in a hungry state and cannot be scheduled; another problem is It is necessary to distinguish between the user's downlink signaling (DCCH) and PS (Packet Switched, packet switching) service (DTCH), and the priority of signaling is high

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0031] A data distribution method of the embodiment of the present invention is as figure 1 As shown, including the following steps:

[0032] Step S101: MACd sends a data volume notification message of downlink data to MACc.

[0033] Step S102, when the TTI expires, the MACc selects the forward traffic channel FACH user dedicated control channel DCCH / dedicated traffic channel DTCH transmission format combination.

[0034] Step S103: MACc sends a transmission format combination selection instruction message to MACd;

[0035] Step S104: MACd sends downlink data to MACc.

[0036] Step S105: MACc buffers the downlink data.

[0037] Step S106: In the subsequent TTI, the MACc sends the stored downlink data to the user.

Embodiment 2

[0039] A data distribution method of the embodiment of the present invention is as figure 2 As shown, including the following steps:

[0040] In step S201, it is judged whether there is data notified to MACc before, if not, step S202 is performed, and a timer is started at the same time, and the current downlink data amount is retransmitted if the Tfc Ind message is not received over time.

[0041] Step S202: MACd sends a data volume notification message of downlink data to MACc.

[0042] Step S203: When the TTI expires, the MACc selects the FACH user DCCH / DTCH transmission format combination.

[0043] Step S204: MACc sends a transmission format combination selection instruction message to MACd.

[0044] Step S205: MACd notifies MACc of the amount of data remaining in the current RLC buffer, and if the amount of data remaining in the current RLC buffer is not 0, a timer is started.

[0045] Step S206: MACd sends downlink data to MACc.

[0046] Step S207: MACc buffers the downlink data.

...

Embodiment 3

[0049] Because AOA (Angle Of Arrival, signal arrival angle) processing needs to be considered on FACH, and the influence of inter-frequency neighbor cell measurement needs to be considered, downlink data cannot be scheduled during this period, so to simplify scheduling design, cell CCCH\BCCH data and FACH User DCCH\DTCH data is operated separately. Cell CCCH\BCCH data needs to be processed with the highest priority. FACH user DCCH\DTCH data scheduling is considered when there is no cell data in the current TTI. Reference image 3 The specific implementation of this embodiment is as follows:

[0050] FACH user MACd sends a downlink data data volume notification message MACD_TO_MACC_DATA_NOTIFY to MACc to notify MACc of the data volume; MACc sets the user's data presence status flag according to the downlink data data volume notification message, and records the current RLC buffered data volume; TTI At that time, MACc determines whether there is cell CCCH / BCCH data to be processed...

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Abstract

The invention discloses a data issuing method which comprises the following steps that: MACd issues a data quantity notification message of downlink data to MACc; when TTI arrives, MACc selects an FACH user DCCH / DTCH transmission format combination; MACc sends a transmission format combination selection instruction message to MACd; MACd sends the downlink data to MACc; the MACc caches the downlink data; and in follow-up TTI, MACc sends the downlink data to a user. The invention also discloses a data issuing system. In the invention, MACc first caches the downlink data, and then sends the downlink data to the user in the follow-up TTI, so as to prevent the hidden hazard that the downlink data Iub of the FACH user goes out of a window; and a user processing sequence is determined according to the access user priority and the principle of the cycle scheduling with the priority, so as to realize fair, reasonable and effective FACH user scheduling.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a method and system for data distribution. Background technique [0002] For users in CELLFACH mode, their data flow in the RNC (Radio Network Controller) network needs to pass through Macc <-> Macd mapping, this function has been defined in the existing MAC (Media Access Control, media access control) specification, but the specific interaction between the two is not clearly described. [0003] For the uplink service, the situation is relatively simple. The MACc entity can directly send the uplink data to the MACd according to the mapping table; the downlink service is relatively complicated. Currently, a cell is generally configured with a FACH channel. Therefore, the following conditions should be considered for downlink scheduling: [0004] Cell CCCH (Common Control Channel, common control channel)\BCCH (Broadcast Control Channel, broadcast control channe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/00H04L1/18H04B7/26
Inventor 唐洪川梁剑王鑫
Owner DATANG MOBILE COMM EQUIP CO LTD
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