CN103108355A

CN103108355A - State packet delay transmission method and state packet delay transmission system

Info

Publication number: CN103108355A
Application number: CN2011103574381A
Authority: CN
Inventors: 杨立
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-11-11
Filing date: 2011-11-11
Publication date: 2013-05-15
Anticipated expiration: 2031-11-11
Also published as: CN103108355B

Abstract

The invention provides a state packet delay transmission method and a state packet delay transmission system. The state packet delay transmission method comprises that when a radio link control (RLC) data packet serial number (SN) received by user equipment (UE) has an RLC SN GAP, the duration of an NACK Delay Timer is regulated according to a correctly received RLC data packet; and the delay transmission of a state packet is carried out according to the regulated duration of the NACK Delay Timer. According to the state packet delay transmission method and the state packet delay transmission system, when the RLC data packet received by the UE has the RLC SN GAP, the duration of the NACK Delay Timer is regulated dynamically according to the correctly received RLC data packet, so that more reasonable delay transmission of the state packet is achieved, and the throughput of downlink data is improved.

Description

A kind of state packet delay sending method and system

Technical field

The present invention relates to the digital mobile communication technical field, relate in particular to a kind of state packet delay sending method and system.

Background technology

At Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, WCDMA) in network, universal land radio access web (Universal Terrestrial Radio Access Network, UTRAN) comprise radio network controller (Radio Network Controller, RNC) and base station (NodeB) two kinds of basic network elements.

development along with the WCDMA network, high-speed downstream receiver grouping access (High Speed Downlink Packet Access, HSDPA), high speed uplink sends link packet access (High Speed Uplink Packet Access, HSUPA), two carrier wave high speed downlink packet access (Dual Carrier-High Speed Downlink Packet Access, DC-HSDPA), the two carrier wave high speed downlink packet access of two-band (Dual Band-Dual Carrier-High Speed Downlink Packet Access, DB-DC-HSDPA), two carrier wave high speed uplink packet access (Dual Carrier-High Speed Uplink Packet Access, DC-HSUPA), four carrier wave high speed downlink packet access (Four Carrier-High Speed Downlink Packet Access, 4C-HSDPA) and eight carrier wave high speed downlink packet accesses (Eight Carrier-High Speed Downlink Packet Access, 8C-HSDPA) these technology are introduced into successively, make the up-downgoing data transmission rate of terminal (UE) constantly be improved.

Multi-transceiver technology for above-mentioned different dimensions, take down direction as example, an important common trait is: UE must be equipped with N descending receive data processing chain (Receiver Chain), reception ﹠ disposal is from the descending wireless connection control of sending of several carrier waves (Radio Link Control, the RLC) packet of same base station, same sector (sector) simultaneously.

In some cases, the UE that is equipped with N receive data processing chain has entered into sector-carrier and has configured when the network of M is only arranged (M is less than N), obviously has N-M receive data processing chain and can be in idle state.At this moment, for N-M the idle receive data processing chain that can take full advantage of UE, network and UE can be achieved as follows operation by adopting multiple spot downlink transfer technology: network to same base station or the different sectors of two different base stations send different RLC packets, UE simultaneously reception ﹠ disposal from the descending RLC packet that sends of single or a plurality of carrier waves of different sectors, same base station or different different sectors, base station.Cite a plain example, for the UE that possesses the DC-HSDPA ability, entered into single-frequency point network (Single Frequency Network), UE can only receive one tunnel descending RLC packet from a descending frequency, in order to give full play to the double reception link capability of this UE, adopt the multicast communication technology, can make the same descending frequency of UE different sectors or two different base station different sectors from same base station receive independently RLC packet of two-way.

Fig. 1 shows the operation chart with base station single-frequency point double reception, as shown in Figure 1, UE High-Speed Shared Control Channel (High Speed Shared Control Channel independently separately in the sector 1 of same base station and sector 2, HS-SCCH) under dispatching command is controlled, at same Transmission Time Interval (Transmission Time Interval, TTI) in, respectively independently from the sector 1 and the descending frequency F1 of sector 2 receive a RLC packet, amount to two RLC packets.Here, for the ease of understanding, can temporarily ignore rlc layer to media access control (Media Access Control, MAC) the multiplexing or distributed relation between the layer data bag, above-mentioned two RLC packets are interpreted as the RLC packet of two different sequence numbers (Sequence Number, SN).Wherein, the above-mentioned pattern that receives two different RLC packets on single frequency from two different sectors of same base station is commonly referred to the base station with frequency double small district (Intra-NodeB Single Frequency Dual Cell, Intra-NodeB SFDC) pattern, this pattern are applicable to UE and are in soft handover area with two neighbor cell edges of base station.

Whether correctly receive in order to feed back the RLC packet, terminal, the base station further is uploaded to RNC if need to send StatusPDU state bag to the base station at the up-link wireless link.Send as sector 1 the RLC packet that sequence number is 5 (SN=5), the RLC packet that sequence number is 6 (SN=6) is sent in sector 2; When terminal has correctly received RLC packet (SN=5), and the incorrect RLC packet (SN=6) that receives, so after a period of time of network regulation, terminal is informed network by upper state bag: ACK confirms that RLC packet (SN=5) correctly receives, and the incorrect reception of NACK negative acknowledgment RLC packet (SN=6).Network based on the state bag that receives, is chosen in some sectors and retransmits RLC packet (SN=6) afterwards.

Fig. 2 shows the operation chart across base station single-frequency point double reception, as shown in Figure 2, under UE separately HS-SCCH dispatching command in the sector 1 of different base station and sector 2 is controlled, in same TTI, respectively from the base station 1 and the descending frequency F1 of base station 2 receive a PDU packet, amount to two PDU packets.Here, for the ease of understanding, can temporarily ignore rlc layer to the multiplexing or distributed relation between MAC layer data bag, above-mentioned two RLC packets are interpreted as the RLC packet of two different SN.Wherein, the pattern that above-mentioned two different sectors from different base stations receive two different RLC packets on single frequencies is commonly referred to across the base station with frequency double small district (Inter-NodeB SFDC) pattern, and this pattern is applicable to UE and is in soft handover area across two neighbor cell edges of base station.

Whether correctly receive in order to feed back the RLC packet, terminal, but this state is coated with base station 1 and base station 2 receives simultaneously if need to send StatusPDU state bag at the up-link wireless link, and further be uploaded to RNC.Send as sector 1 the RLC packet that sequence number is 7 (SN=7), the RLC packet that sequence number is 10 (SN=10) is sent in sector 2; When terminal has correctly received RLC packet (SN=10), and the incorrect RLC packet (SN=7) that receives, so after a period of time of network regulation, terminal is told network by upper state bag: ACK confirms that RLC packet (SN=10) correctly receives, and the incorrect reception of NACK negative acknowledgment RLC packet (SN=7).Network based on the state bag that receives, is chosen in some sectors and retransmits RLC packet (SN=7) afterwards.

in theory, as long as network frequency resource allows, two different sectors of same base station or two different base stations also can send two different RLC packets on different descending frequencies, and simultaneously UE from same base station or two different RLC packets of two descending frequency reception of two different sectors of two different base stations, above-mentioned pattern is called (the Intra-NodeB Dual Frequency Dual Cell with dual-frequency point double small district, base station usually, Intra-NodeB DFDC) pattern and across dual-frequency point double small district, base station (Inter-NodeB DFDC) pattern.The above-mentioned process of only having enumerated the district's reception operation of the descending double small of UE, can also expand to higher-dimension more in logic, as for the UE that the 4C-HSDPA receiving ability is arranged, it can be simultaneously carries out descending four residential quarters from the dual-frequency point of two different sectors of two different sectors of same base station or two different base stations and receives operation etc.

(Intra-NodeB) multicast communication technology in the base station, RNC does not need the RLC packet is carried out across the shunting between the base station.With respect to multi-transceiver technology, although descending RLC packet comes from same frequency or a plurality of different frequent points of different sectors, but common ground is, UE still receives the scheduling controlling of HS-SCCH control channel from same base station, so, even a plurality of HS-SCCH channels in a plurality of sector participate in scheduling controlling, because the sector belongs to same base station, to each other or can the cooperative scheduling control command, there be the situation of a large amount of spaces (GAP) in the RLC packet sequence number that can not occur receiving.And across base station (Inter-NodeB) multicast communication technology, RNC needs the RLC packet is carried out across the shunting between the base station, and namely a part of RLC (SN=X) is sent by base station 1, and remainder RLC (SN=Y) is sent by base station 2.With respect to multi-transceiver technology, not only descending RLC packet comes from same frequency or a plurality of different frequent points of different sectors, and UE will receive from the different sectors of different base stations the scheduling controlling of a plurality of HS-SCCH control channels, and a plurality of HS-SCCH channels in the different sectors of different base station are due to complete strange land, thereby cooperative scheduling control command well to each other, the situation of a large amount of GAP appears in the RLC packet sequence number that may cause occurring receiving.RLC packet in these RLC SN GAP may be to have lost veritably eating dishes without rice or wine, MAC layer as UE could not retransmit recovery, rlc layer could not correctly receive etc., perhaps the RLC packet only temporarily rests in the transmission buffer memory of some base stations, and UE a period of time that may need to delay time could correctly receive.For the latter, thisly non-ly eat dishes without rice or wine to lose veritably the RLC packet and be only temporary being buffered and the phenomenon of RLC SN GAP occurs, be commonly referred to Skew.

Network or terminal should identify Skew as far as possible, if because Skew is not identified, terminal can be carried out false negative to the RLC packet in RLC SN GAP mistakenly and be confirmed NACK in the state bag that reports, and then makes network unnecessarily to retransmit the RLC packet that belongs to Skew in described RLC SN GAP.

In order to reduce the unnecessary re-transmission of network, existingly may send to UE that to contain the process that false negative confirms that the state bag of (NACK) delays time as follows: with reference to Fig. 3, RNC is split into two teams to the RLC packet, troop 1 comprises RLC packet SN=0,1,2,3,8, will the 1 interior descending transmission in the residential quarter; Troop 2 comprises RLC packet SN=4, and 5,6,7, will the 2 interior descending transmissions in the residential quarter.Should be appreciated that this moment UE in advance and do not know that what sequence number mode RNC takes shunt, therefore do not know which RLC SN will from which residential quarter.Only after UE correctly receives the RLC packet, just can know this RLC packet from which residential quarter, if take defeat, UE still and do not know this RLC packet is from which residential quarter.

At time point T0,

UE

1 and 2 correctly receives RLC (SN=0) and RLC (SN=4) from the residential quarter respectively.UE detects RLC SN GAP=1, and 2,3, and uncertain these RLC (SN=1,2,3) are from which residential quarter, so do not know it is real the loss or Skew on earth.After this originally arranged during the uploaded state bag opportunity as UE, the false negative that sends RLC (SN=1,2,3) of can delaying time is confirmed NACK, and be RLCSN GAP=1,2,3 unlatching negative acknowledgment delay timer NACKDelayTimer_1.

At time point T1, UE 1 correctly receives RLC (SN=1) from the residential quarter respectively, but can't be from the residential quarter the 2 correct RLC (SN=5) that receive.UE detects RLC SN GAP=2, and 3, and uncertain these RLC (SN=2,3) are from which residential quarter, so do not know it is real the loss or Skew on earth.After this originally arranged during the uploaded state bag opportunity as UE, the false negative that sends RLC (SN=2,3) of can delaying time is confirmed NACK, because delay timer NACKDelayTimer_1 is not yet then.

At time point T2,

UE

1 and 2 correctly receives RLC (SN=2) and RLC (SN=6) from the residential quarter respectively.UE detects RLC SN GAP=3,5, and uncertain these RLC (SN=3,5) are from which residential quarter, so uncertain be real the loss or Skew on earth.After this originally arranged during the uploaded state bag opportunity as UE, the false negative that sends RLC (SN=3,5) of can delaying time is confirmed NACK.On the one hand delay timer NACKDelayTimer_1 yet not then, in addition due to RLC SN GAP=5 and RLC SN GAP=3 discontinuous, be therefore second delay timer NACKDelayTimer_2 of RLC SN GAP=5 unlatching.

At time point T3,

UE

1 and 2 correctly receives RLC (SN=3), RLC (SN=7) from the residential quarter respectively.UE detects RLC SN GAP=5.Disappearance along with RLC SN GAP=3, UE can stop cancelling NACKDelayTimer_1, because the continuous sequence RLC packet from residential quarter 1 all correctly receives, UE originally can be according to uploaded state bag on opportunity originally, to promote advancing of RNC one side RLC send window.But due to the existence of RLC SN GAP=5, UE still will allow NACKDelayTimer_2 continue timing, and then has still stoped UE according to uploaded state bag on opportunity originally, and RNC one side RLC send window still can not advance.

At time point T4, UE 1 correctly receives RLC (SN=8) from the residential quarter, by the Iub interface Flow Control, does not have new RLC packet 2 to send from the residential quarter.This moment, because be 8 from the maximum sequence number of the RLC packet of residential quarter 1, and be 7 from the maximum sequence number of the RLC packet of residential quarter 2, this moment, UE can determine that RLC (SN=5) has lost eating dishes without rice or wine veritably, stop cancelling NACKDelayTimer_2, UE allows on next opportunity the uploaded state bag, thereby promotes advancing of RNC one side RLC send window.

In above-mentioned NACKDelayTimer delay strategy, although can maximum possible avoid UE to send the state bag that may contain vicious reception negative acknowledgment NACK, because only have after terminal is through time-delay for a long time, determined that certain RLC packet really lost, just allow up transmission state bag, thereby network side just can carry out real significant re-transmission.But there is an obvious shortcoming in this method, exactly because the state bag had both comprised confirmation ACK to correct reception RLC packet, comprise again there is no correctly to receive the negative acknowledgment NACK of RLC packet, time-delay negative acknowledgment NACK's confirmation ACK must also delay time, thereby RNC side RLC send window can be hindered to advance, and the downlink data throughput can be affected.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of state packet delay sending method and system, can adjust the delay time of state bag, improves the downlink data throughput.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of state packet delay sending method, described method comprises:

When space (RLC SN GAP) appears in the RLC packet sequence number of UE reception, adjust the duration of NACKDelayTimer according to the RLC packet that correctly receives;

Carry out the time-delay transmission of state bag according to the duration of the NACKDelayTimer after adjusting.

Further, described method also comprises:

RNC arranges the duration of NACKDelayTimer and sends to UE according to the size of RLC send window.

Further, before the RLC packet that described basis correctly receives was adjusted the duration of NACKDelayTimer, described method also comprised:

When the UE initial examination and measurement arrives RLC SN GAP, the total length of storage GAP, the initialization probability factor is 1, opens NACKDelayTimer in the moment of the up transmission state bag of self next script.

Wherein, the RLC packet that correctly receives of described basis is adjusted the duration of NACKDelayTimer and is:

After UE correctly receives new RLC packet again, again detect RLC SN GAP, the total length of storage GAP, and compare with the total length of the GAP of last stored;

During less than the total length of the GAP of last stored, UE shortens the duration of described NACKDelayTimer when the total length of the GAP of this storage;

When the total length of the GAP of this storage equaled the total length of GAP of last stored, the duration of described NACKDelayTimer remained unchanged;

During greater than the total length of the GAP of last stored, UE extends the duration of described NACKDelayTimer when the total length of the GAP of this storage.

Wherein, described UE shortens to the duration of described NACKDelayTimer:

Described probability factor and coefficient (1-a) are multiplied each other, obtain new probability factor, wherein a is default static coefficient, and span is greater than 0 and less than 1;

Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being shortened.

Wherein, described UE is extended for the duration of described NACKDelayTimer:

Described probability factor and coefficient (1+a) are multiplied each other, obtain new probability factor, wherein a is default static coefficient, and span is greater than 0 and less than 1;

Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being extended.

Wherein, the time-delay of carrying out the state bag of described duration according to the NACKDelayTimer after adjusting is sent as:

The duration of NACKDelayTimer is updated to the duration of the NACKDelayTimer after adjustment, the NACKDelayTimer stop value before adjust continues timing simultaneously;

When described NACKDelayTimer was overtime, UE carried out the transmission of state bag in the moment of self next up transmission state bag.

A kind of state packet delay transmitting system, described system comprises: UE is used for adjusting the duration of NACKDelayTimer according to the RLC packet that correctly receives when RLC SN GAP appears in the RLC packet that receives; Carry out the time-delay transmission of state bag according to the duration of the NACKDelayTimer after adjusting.

Further, described system also comprises: RNC, be used for the size according to the RLC send window, and the duration of NACKDelayTimer is set and sends to UE.

Further, described UE, when also being used for initial examination and measurement to RLC SN GAP, the total length of storage GAP, the initialization probability factor is 1, and opens NACKDelayTimer in the moment of the up transmission state bag of self next script.

Wherein, described UE, concrete being used for detected RLC SN GAP again after again correctly receiving new RLC packet, the total length of storage GAP, and compare with the total length of the GAP of last stored; When the total length of the GAP of this storage during less than the total length of the GAP of last stored, the duration of described NACKDelayTimer is shortened; When the total length of the GAP of this storage equaled the total length of GAP of last stored, the duration of described NACKDelayTimer remained unchanged; When the total length of the GAP of this storage during greater than the total length of the GAP of last stored, the duration of described NACKDelayTimer is extended.

Wherein, described UE, concrete being used for multiplied each other described probability factor and coefficient (1-a), obtains new probability factor, and wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being shortened.

Wherein, described UE, concrete being used for multiplied each other described probability factor and coefficient (1+a), obtains new probability factor, and wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being extended.

Wherein, described UE, the concrete duration that is used for NACKDelayTimer is updated to the duration of the NACKDelayTimer after adjustment, and the NACKDelayTimer stop value before adjust continues timing simultaneously; When described NACKDelayTimer is overtime, carry out the transmission of state bag in the moment of self next up transmission state bag.

The present invention when RLC SN GAP appears in the RLC packet that receives, according to the RLC packet that correctly receives, dynamically adjusts the duration of NACKDelayTimer by UE, realizes that more rational state packet delay sends, and improves the throughput of downlink data.

Description of drawings

Fig. 1 is the operation chart with base station single-frequency point double reception;

Fig. 2 is the operation chart across base station single-frequency point double reception;

Fig. 3 is for the reception schematic diagram of RLC SN GAP occurring across the base station;

Fig. 4 is the realization flow schematic diagram of state packet delay sending method of the present invention;

Fig. 5 is the structural representation of state packet delay transmitting system of the present invention;

Fig. 6 is the reception schematic diagram that RLC SN GAP appears in state packet delay sending method embodiment two of the present invention.

Embodiment

Basic thought of the present invention is: when space RLC SNGAP appears in the RLC packet sequence number of UE reception, adjust the duration of NACKDelayTimer according to the RLC packet that correctly receives; Carry out the time-delay transmission of state bag according to the duration of the NACKDelayTimer after adjusting.

For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.

Fig. 4 shows the realization flow of state packet delay sending method of the present invention, and as shown in Figure 4, described method comprises the steps:

Step 401 when RLC SN GAP appears in the RLC packet sequence number of UE reception, is adjusted the duration of NACKDelayTimer according to the RLC packet that correctly receives;

Particularly, before this step, described method also comprises: RNC is according to the demand of UE business downlink data throughput, in conjunction with the algorithm of self, for UE determines the size of suitable RLC data package size, RLC send window and according to the size of RLC send window, the duration of NACKDelayTimer is set and sends to UE; When the UE initial examination and measurement arrives RLC SN GAP, the total length of storage GAP, the initialization probability factor is 1, and opens NACKDelayTimer in the moment of the up transmission state bag of self next script.

Wherein, the duration of adjusting negative acknowledgment delay timer NACKDelayTimer according to the RLC packet that correctly receives is: after UE correctly receives new RLC packet again, again detect RLC SN GAP, the total length of storage GAP, and compare with the total length of the GAP of last stored; During less than the total length of the GAP of last stored, UE shortens the duration of described NACKDelayTimer when the total length of the GAP of this storage; When the total length of the GAP of this storage equaled the total length of GAP of last stored, the duration of described NACKDelayTimer remained unchanged; During greater than the total length of the GAP of last stored, UE extends the duration of described NACKDelayTimer when the total length of the GAP of this storage.

Particularly, described UE shortens to the duration of described NACKDelayTimer: described probability factor and coefficient (1-a) are multiplied each other, obtain new probability factor, wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being shortened.Specifically can also be expressed as follows formula: Skew_Probability '=Skew_Probability * (1-a); NACKDelayTimer '=NACKDelayTimer * Skew_Probability '; Wherein, Skew_Probability is old probability factor, and Skew_Probability ' is new probability factor, and NACKDelayTimer is the duration of old NACKDelayTimer, and NACKDelayTimer ' is the duration of new NACKDelayTimer.

Particularly, described UE is extended for the duration of described NACKDelayTimer: described probability factor and coefficient (1+a) are multiplied each other, obtain new probability factor, wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being extended.Specifically can also be expressed as follows formula: Skew_Probability '=Skew_Probability * (1+a); NACKDelayTimer '=NACKDelayTimer * Skew_Probability '; Wherein, Skew_Probability is old probability factor, and Skew_Probability ' is new probability factor, and NACKDelayTimer is the duration of old NACKDelayTimer, and NACKDelayTimer ' is the duration of new NACKDelayTimer.

Step 402 is carried out the time-delay transmission of state bag according to the duration of the NACKDelayTimer after adjusting;

Be specially the duration that duration with NACKDelayTimer is updated to the NACKDelayTimer after adjustment, the NACKDelayTimer stop value before adjust continues timing simultaneously; When described NACKDelayTimer was overtime, UE carried out the transmission of state bag in the moment of self next up transmission state bag.

After should be appreciated that this step, initial value or RNC that described NACKDelayTimer is reduced in step 401 arrange according to the size of RLC send window again.

Fig. 5 shows the structure of state packet delay transmitting system of the present invention, and as shown in Figure 5, described system comprises: UE 52, is used for adjusting the duration of NACKDelayTimer according to the RLC packet that correctly receives when RLC SN GAP appears in the RLC packet that receives; Carry out the time-delay transmission of state bag according to the duration of the NACKDelayTimer after adjusting.

Further, described system also comprises: RNC 51, are used for the size according to the RLC send window, the duration of NACKDelayTimer is set and sends to UE 52.

Wherein, described UE 52, when also being used for initial examination and measurement to RLC SN GAP, the total length of storage GAP, the initialization probability factor is 1, and opens NACKDelayTimer in the moment of self next up transmission state bag.

Wherein, described UE 52, concrete being used for detected RLC SN GAP again after again correctly receiving new RLC packet, the total length of storage GAP, and compare with the total length of the GAP of last stored; When the total length of the GAP of this storage during less than the total length of the GAP of last stored, the duration of described NACKDelayTimer is shortened; When the total length of the GAP of this storage equaled the total length of GAP of last stored, the duration of described NACKDelayTimer remained unchanged; When the total length of the GAP of this storage during greater than the total length of the GAP of last stored, the duration of described NACKDelayTimer is extended.

Wherein, described UE 52, concrete being used for multiplied each other described probability factor and coefficient (1-a), obtains new probability factor, and wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being shortened.

Wherein, described UE 52, concrete being used for multiplied each other described probability factor and coefficient (1+a), obtains new probability factor, and wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being extended.

Wherein, described UE 52, the concrete duration that is used for NACKDelayTimer is updated to the duration of the NACKDelayTimer after adjustment, and the NACKDelayTimer stop value before adjust continues timing simultaneously; When described NACKDelayTimer was overtime, UE 52 carried out the transmission of state bag in the moment of self next up transmission state bag.Here, should be appreciated that after described UE 52 sends the state bags, can described NACKDelayTimer be reduced to initial value or receive RNC 51 duration of NACKDelayTimer is set according to the size of RLC send window again.

Below in conjunction with specific embodiment, said method is elaborated.

Embodiment one

101: when UE is in when operating across base station single-frequency point double reception, demand according to UE business downlink data throughput, the RNC lateral root is according to self prewired algorithm, for UE determines the size (RLC transmission window size) of suitable RLC data package size (RLC PDU size), RLC send window and the duration of NACKDelayTimer;

Particularly, in embodiment one, the duration of RNC configuration NACKDelayTimer is 100ms, and controls (Radio Resource Control) to UE configuration above-mentioned parameter and other parameters according to existing RRC agreement necessity by the Radio Resource of RRC message.

Lower mask body describes in conjunction with the reception that RLC SN GAP occurs across the base station shown in Fig. 3.

102: at time point T0=0ms,

UE

1 and 2 correctly receives RLC (SN=0) and RLC (SN=4) from the residential quarter respectively, and UE detects RLC SN GAP=1,2,3, record the total length L of GAP (old)=3 this moment, initialization probability factor S kew_Probability=1.

Particularly, UE since 0 reverse countdown, does not allow UE to send any state bag at self next former NACKDelayTimer that should allow the moment open configuration of up transmission state bag before described NACKDelayTimer is overtime.

103: at time point T1=20ms, UE 1 correctly receives RLC (SN=1) from the residential quarter, but can't be from the residential quarter the 2 correct RLC (SN=5) that receive, UE detects RLC SN GAP=2,3, record the total length L of GAP (newly)=2 this moment, and compare L (newly) and L (old).

Due to L (old)＞L (newly), upgrade Skew_Probability '=Skew_Probability * (1-a)=0.9, upgrade NACKDelayTimer '=NACKDelayTimer * Skew_Probability=90ms, and the NACKDelayTimer stop value at state bag delivery time that next UE allows before upgrade continues timing, upgrades L (old)=2.

104: at time point T2=40ms,

UE

1 and 2 correctly receives RLC (SN=2) and RLC (SN=6) from the residential quarter respectively.UE detects RLC SN GAP=3, and 5,, record the total length L of GAP (newly)=2 this moment, and compare L (newly) and L (old).

Due to L (old)=L (newly), keep Skew_Probability=0.9 and NACKDelayTimer=90ms, and then last time, the NACKDelayTimer stop value continued timing.

105: at time point T3=60ms,

UE

1 and 2 correctly receives RLC (SN=3) and RLC (SN=7) from the residential quarter respectively.UE detects RLC SN GAP=5, records the total length L of GAP (newly)=1 this moment, and compares L (newly) and L (old).

Due to L (old)＞L (newly), upgrade Skew_Probability '=Skew_Probability * (1-a)=0.9 * 0.9=0.81, upgrade NACKDelayTimer '=NACKDelayTimer * Skew_Probability=90ms * 0.81=73ms, and then last time, the NACKDelayTimer stop value continued timing, upgraded L (old)=1.

106: before time point T4=80ms, the NACKDelayTimer of UE is overtime, then send immediately the state bag on next opportunity, to promote advancing of RNC side RLC send window.Skew_Probability, NACKDelayTimer reduction initial value or receive RNC again according to the value of the size configure of RLC send window.

Embodiment two

201: when UE is in when operating across base station single-frequency point double reception, demand according to UE business downlink data throughput, the RNC lateral root is according to self prewired algorithm, for UE determines the size (RLC transmission window size) of suitable RLC data package size (RLC PDU size), RLC send window and the duration of NACKDelayTimer;

Particularly, in embodiment two, the duration of RNC configuration NACKDelayTimer is 100ms, and controls (Radio Resource Control) to UE configuration above-mentioned parameter and other parameters according to existing RRC agreement necessity by the Radio Resource of RRC message.

Lower mask body describes in conjunction with the reception that RLC SN GAP appears in the embodiment two shown in Fig. 6.

202: at time point T0=0ms,

UE

203: at time point T1=20ms, UE respectively from the residential quarter 1 and residential quarter 2 correctly receive RLC (SN=1) and RLC (SN=5), UE detects RLC SN GAP=2,3, record the total length L of GAP (newly)=2 this moment, and compare L (newly) and L (old).

204: at time point T2=40ms, UE respectively can not be from the

residential quarter

1 and 2 correctly receives RLC (SN=2) and RLC (SN=6).UE detects RLC SN GAP=2, and 3, record the total length L of GAP (newly)=2 this moment, and compare L (newly) and L (old).

205: at time point T3=60ms, UE can not be from the residential quarter 1 correctly receives RLC (SN=3), but 2 correctly receives RLC (SN=7) from the residential quarter.UE detects RLC SN GAP=2, and 3,6, record the total length L of GAP (newly)=3 this moment, and compare L (newly) and L (old).

Due to L (old)＜L (newly), upgrade Skew_Probability '=Skew_Probability * (1+a)=0.9 * 1.1=0.99, upgrade NACKDelayTimer '=NACKDelayTimer * Skew_Probability=90ms * 0.99=90ms, and then last time, the NACKDelayTimer stop value continued timing, upgraded L (old)=3.

206: before time point T4=80ms, the NACKDelayTimer of UE does not have overtime, and UE does not allow to send the state bag, and RNC side RLC send window is prevented from advancing.Until the NACKDelayTimer of UE is overtime, then send immediately the state bag on next opportunity, to promote advancing of RNC side RLC send window.Skew_Probability, NACKDelayTimer reduce initial value.

The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.

Claims

1. a state packet delay sending method, is characterized in that, described method comprises:

When space RLC SNGAP appears in the wireless connection control RLC packet sequence number of user terminal UE reception, adjust the duration of negative acknowledgment delay timer NACKDelayTimer according to the RLC packet that correctly receives;

2. method according to claim 1, is characterized in that, described method also comprises:

Radio network controller (RNC) arranges the duration of NACKDelayTimer and sends to UE according to the size of RLC send window.

3. method according to claim 1, is characterized in that, before the RLC packet that described basis correctly receives was adjusted the duration of NACKDelayTimer, described method also comprised:

4. method according to claim 3, is characterized in that, the duration that the RLC packet that described basis correctly receives is adjusted negative acknowledgment delay timer NACKDelayTimer is:

5. method according to claim 4, is characterized in that, described UE shortens to the duration of described NACKDelayTimer:

6. method according to claim 4, is characterized in that, described UE is extended for the duration of described NACKDelayTimer:

7. the described method of according to claim 1 to 6 any one, is characterized in that, the time-delay that described duration according to the NACKDelayTimer after adjusting carries out the state bag is sent as:

8. a state packet delay transmitting system, is characterized in that, described system comprises: UE is used for adjusting the duration of NACKDelayTimer according to the RLC packet that correctly receives when RLC SN GAP appears in the RLC packet that receives; Carry out the time-delay transmission of state bag according to the duration of the NACKDelayTimer after adjusting.

9. system according to claim 8, is characterized in that, described system also comprises: RNC, be used for the size according to the RLC send window, and the duration of NACKDelayTimer is set and sends to UE.

10. system according to claim 8, is characterized in that, described UE, when also being used for initial examination and measurement to RLC SN GAP, the total length of storage GAP, the initialization probability factor is 1, and opens NACKDelayTimer in the moment of the up transmission state bag of self next script.

11. system according to claim 10 is characterized in that, described UE, and concrete being used for detected RLC SN GAP again after again correctly receiving new RLC packet, the total length of storage GAP, and compare with the total length of the GAP of last stored; When the total length of the GAP of this storage during less than the total length of the GAP of last stored, the duration of described NACKDelayTimer is shortened; When the total length of the GAP of this storage equaled the total length of GAP of last stored, the duration of described NACKDelayTimer remained unchanged; When the total length of the GAP of this storage during greater than the total length of the GAP of last stored, the duration of described NACKDelayTimer is extended.

12. system according to claim 10 is characterized in that, described UE, and concrete being used for multiplied each other described probability factor and coefficient (1-a), obtains new probability factor, and wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being shortened.

13. system according to claim 10 is characterized in that, described UE, and concrete being used for multiplied each other described probability factor and coefficient (1+a), obtains new probability factor, and wherein a is default static coefficient, and span is greater than 0 and less than 1; Duration and the described new probability factor of described NACKDelayTimer are multiplied each other, the NACKDelayTimer after being extended.

14. the described system of according to claim 8 to 13 any one, it is characterized in that, described UE, the concrete duration that is used for NACKDelayTimer is updated to the duration of the NACKDelayTimer after adjustment, and the NACKDelayTimer stop value before adjust continues timing simultaneously; When described NACKDelayTimer is overtime, carry out the transmission of state bag in the moment of self next up transmission state bag.