CN100499903C - An implementation method and device for dynamically scheduling uplink resources - Google Patents
An implementation method and device for dynamically scheduling uplink resources Download PDFInfo
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- CN100499903C CN100499903C CNB2006101609277A CN200610160927A CN100499903C CN 100499903 C CN100499903 C CN 100499903C CN B2006101609277 A CNB2006101609277 A CN B2006101609277A CN 200610160927 A CN200610160927 A CN 200610160927A CN 100499903 C CN100499903 C CN 100499903C
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Abstract
The invention discloses a method for realizing dynamic scheduling of an uplink resource. The method assigns a related uplink state mark (USF) to each TBF when an uplink temporary block current (TBF) is created and includes the following steps: A. when a USF form of the TBF changes, a network side informs a terminal with the changed USF form and carries out uplink resource scheduling according to the changed USF form in the transmission process of the uplink TBF data; B. the terminal receives a notice from the network side and reads the USF carried by a downlink communication channel which is corresponding to the TBF according to the changed USF form in the notice, and sends uplink data through the uplink TBF according to the read USF value. The invention also discloses a device for realizing uplink resource scheduling. The network side of the proposal in the invention can allow the terminal to adopt a suitable form to read the USF in the downlink communication channel, thus realizing the rationality of the uplink resource scheduling and avoiding generation of source waste.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of implementation method of dynamically scheduling uplink resources and device.
Background technology
In order fully to satisfy the bandwidth demand that following radio multimedium is used, Enhanced Data rates for GSM Evolution (Enhanced Data rates for GSM Evolution, EDGE) provide one from GPRS (General Packet Radio Service is GPRS) to the transitional scheme of 3G (Third Generation) Moblie.This transition scheme and universal mobile telecommunications system (Universal MobileTelecommunications System, UMTS) shared core net, by introducing the Iu interface, evolve to GSM EDGE Radio Access Network (GSM EDGE Radio Access Network, GERAN).One of target of GERAN evolution is exactly to support the more business type, comprising delay sensitive business such as conversation class, promptly supports low time delay business on the shared channel in packet switching (PS) territory
On the GERAN shared channel, the allocation of radio resources mode is that (TemporaryBlock Flow TBF) realizes by Temporary Block Flow.TBF is travelling carriage (Mobile Station, interim connection MS) and between the network side, only just existence in the process of data forwarding.The up-downgoing resource allocation of TBF is separate, but all is the control that is subjected to network side.The TBF of down direction is by the resource allocation of network side overall planning, the up direction network side is by uplink state sign (Uplink State Flag, USF) dispatch TBF to the taking of resource, when up TBF sets up, network will be a USF value between one 0 to 7 of this TBF assignment.TBF can comprise one or more physical data channels (PhysicsData Channel, PDCH).(Temporary Flow Identity TFI) identifies TBF to adopt the Temporary Block Flow indication.The base unit that carries out allocation of radio resources and wireless transmission in the time division multiplexing of PDCH (TDMA) frame is called as radio block.
A kind of resource regulating method to up TBF as shown in Figure 1 in the prior art.In the TBF data transmission procedure, the USF in the radio block of the down channel that the terminal persistent surveillance is corresponding with up TBF, if monitor USF when setting up with TBF the USF value of network allocation equate, then can in next block period, send upstream data.Receive USF at frame N to the descending time slot 1 of frame N+3 among Fig. 1, then send data to the ascending time slot 1 of frame N+7 at frame N+4.It can also be seen that from Fig. 1 radio block is made up of the identical time slot of 4 adjacent tdma frames, each radio block sends the interval, and (TransmissionTime Interval TTI) is about 20ms, claims that this TBF is 20ms TBF.In like manner, on the down direction, USF is distributed on 4 adjacent tdma frames, is called 20ms USF.
At present, this 20ms TBF can not satisfy the demand of low time delay business such as conversation class.A method that reduces time delay is exactly transmission interval (Reduced TTI, RTTI) technology that shortens.As shown in Figure 2, radio block is made up of 2 adjacent time-slots of 2 adjacent tdma frames, and the TTI of each radio block has just reduced to 10ms.Claim that this TBF is 10ms TBF.In like manner, the USF of down direction is distributed on 2 adjacent time-slots of 2 adjacent tdma frames, is called 10ms USF.
Consider backwards compatibility, support the terminal of RTTI technology need support the foundation of 20ms TBF and 10msTBF, and can read 20ms USF and 10ms USF; When 20ms TBF has distributed identical channel with 10ms TBF, be not wasted in order to guarantee resource, multiplexing TBF all reads 20ms USF on corresponding down channel.
In setting up up TBF process, it still is 10ms USF that network side notice TBF that terminal is built need read 20ms USF, and promptly the USF bit is distributed on 1 time slot of 4 adjacent tdma frames or on 2 time slots of 2 tdma frames.Terminal reads USF from zero hour of TBF according to the mode of network side appointment, and sends data on corresponding up TBF.
The technical scheme of prior art has only been considered when up TBF sets up, the form of the descending USF of network side notice terminal; And do not consider after TBF sets up, when business carry out in the process different TTI TBF multiplexing during identical channel resource, network side need be notified the change of the descending USF form of terminal.As shown in Figure 3, existing terminal 1 is set up TBF1 with network side, takies PDCH0 and PDCH1, reads descending 10ms USF.The multiplexing PDCH1 of TBF2 of the newly-built 20ms TTI of terminal 2 this moment, and TBF2 can only read the USF of 20ms, and this moment, network side just needed notice terminal 1 should read the USF of 20ms on down channel.Otherwise, in TBF1 and TBF2 data transmission procedure, the TBF2 of 20ms TTI is released, and the TBF1 of 10ms TTI just need not read the USF of 20ms on down channel, this moment, network side need should read the USF of 10ms with the situation of change notice terminal 1 of USF form on down channel.And according to the scheme of prior art, the USF form of terminal 1 can not change in these cases, will produce waste like this when scheduling resource.
Summary of the invention
In view of this, the objective of the invention is to, propose a kind of dynamically scheduling uplink resources implementation method, can in the process that business is carried out, dynamically adjust the USF form according to the multiplexed situation of TBF.
This method for each TBF distributes corresponding uplink state sign USF, and comprises the steps: when setting up temporary up-link block flow TBF
In up TBF data transmission procedure, when the USF form of described TBF changes, USF form after network side will change by grouping time slot replacement message or many TBF time slot replacement message is notified terminal, and carries out ascending resource scheduling according to the USF form after changing;
Wherein, described terminal is in order to reading the USF that the corresponding down channel of described TBF carries according to the USF form after changing in the described notice, and according to the USF value that is read by up TBF transmission upstream data.
The present invention also aims to, propose a kind of device that is used to realize dynamically scheduling uplink resources, comprising:
The ascending resource scheduling module is used for the USF form when setting up according to TBF or from the USF form of the multiplexing detection module of TBF the ascending resource of portable terminal is dispatched, and scheduling result is sent to portable terminal by transceiver module;
Transceiver module is used for the ascending resource scheduling result from the ascending resource scheduling module is sent to portable terminal; To be sent to portable terminal from the USF form after the variation of the multiplexing detection module of TBF;
The multiplexing detection module of TBF, be used for the channel multiplexing situation of TBF is detected, when channel multiplexing or demultiplexing occurring, whether the USF form of judging TBF needs to change, USF form after will changing according to judged result is sent to the ascending resource scheduling module, and the USF form after will changing is sent to portable terminal by transceiver module.
As can be seen from the above technical solutions, in up TBF data transmission procedure, because and the multiplexing or demultiplexing of up TBF of other different TTI, the form that its corresponding down channel reads USF can change, network side is with the situation of change notice relevant terminal of this USF form, make terminal adopt suitable form to read USF, reach the reasonability of ascending resource scheduling, avoid producing the wasting of resources at down channel.
Description of drawings
Fig. 1 is a up 20ms TBF schematic diagram in the prior art;
Fig. 2 is a up 10ms TBF schematic diagram in the prior art;
Fig. 3 dynamically changes schematic diagram for up TBF reads USF;
Fig. 4 is the schematic diagram of TUF in the embodiment of the invention;
Fig. 5 is the flow chart of the embodiment of the invention;
Fig. 6 is an embodiment of the invention structure drawing of device.
Embodiment
Core content of the present invention is: when the USF of up TBF form changed, the USF form after network side will change was notified to the terminal of described TBF correspondence, made terminal read USF by the USF form after changing thereupon.
For achieving the above object, the embodiment of the invention in the clean culture control messages, add Temporary Block Flow uplink state sign format (TBF USF FORMAT, information word TUF) (Information Element, IE).As shown in Figure 4, the length of TUF is 8 bits, and each bit is represented the USF form of a up PDCH channel correspondence.Wherein, " 0 " expression 20ms USF, " 1 " expression 10ms USF to not distributing to the PDCH channel of any TBF, can be changed to " 0 " or " 1 ", represents with " x " among Fig. 4.The length of TUF also can be 1 bit, represents the USF form of up TBF, and promptly the USF form of all channels of TBF is all identical.Wherein, the value of TUF is that all channels of " 0 " expression TBF all are 20ms USF, represents that for " 1 " all channels of TBF all are 10ms USF.
10ms TTI TBF need be distributed into right channel, and therefore when TUF was 8 bits, the number of " 1 " was even number certainly.From the minimum channel of channel number, descending scheduling USF form is that the channel of 10msUSF is that the channel of 10ms makes up in twos with the nearest descending scheduling USF form in its right side always, constitutes a 10ms TTI channel to (PDCH pairs).Among Fig. 4, it is right that up channel 2 and up channel 4 constitute a 10ms TTI channel, and it is right that up channel 6 and up channel 7 constitute a 10ms TTI channel.
For any one terminal, only need the descending scheduling USF form of the shared PDCH channel of the care TBF corresponding with self.Such as, after the terminal 1 among Fig. 3 receives the clean culture control messages of carrying the TUF that encodes as shown in Figure 4, PDCH0 that 1 care TBF1 corresponding with self of terminal takies and the corresponding value of PDCH1.
The flow process of the embodiment of the invention comprises the steps: as shown in Figure 5
Step 501: in up TBF data transmission procedure, because channel multiplexing or demultiplexing between the TBF of different TTI, the USF form of the current up TBF of network scheduling changes, network side generates the point-to-point control messages that comprises TUF IE, wherein TUF IE carries the descending scheduling USF form after the variation, and at up TBF corresponding downstream packet associated control channel (Packet AssociatedControl Channel//Downlink PACCH/D) goes up and to send described point-to-point control messages to terminal.
Described point-to-point control messages can be grouping time slot replacement message (PACKET TIMESLOTRECONFIGURE) or many TBF time slot replacement message (MULTIPLE TBF TIMESLOTRECONFIGURE) or packet uplink affirmation/non-acknowledge message (PACKET UPLINKACK/NACK etc.).The correlation reserved block period (RRBP) that is provided with in the described point-to-point control messages head is effective, and terminal is responded point-to-point control messages.Can also comprise TBF zero-time (TBF STARTING TIME) in the described clean culture control messages.
Step 502: the terminal of described TBF correspondence receives the point-to-point control messages of network side transmitted and is correctly decoded, and obtains TUF and TBF zero-time; Described then terminal sends response message to network side.
Step 503: network side judges whether to receive the response message of self terminal from the TBF zero-time, if then execution in step 504, otherwise goes to step 501.
Step 504: network side USF form according to the indication of TUF on down channel carries out ascending resource scheduling.
Step 505: from the TBF zero-time, terminal reads the USF that down channel carries according to the indicated USF form of the TUF in the paid-in point-to-point control messages, if the USF of network allocation equated when USF that reads and TBF set up, then terminal sends data by up TBF to network side at next cycle.
The described network of step 501 also can not carry the TBF zero-time in the point-to-point control messages that terminal sends, then the described point-to-point control messages of step 502 decoding terminals is had to TUF.
Correspondingly, in the step 503, network side postpones a period of time after sending point-to-point control messages, judge whether to receive the response message of self terminal then.The time span that described network side postpones is set according to actual needs by network side;
Correspondingly, in the step 505, terminal reads the zero-time of descending scheduling USF, begins to send data by up TBF to network side from the next block period of the control messages place block period that receives.
Through after the above-mentioned steps, terminal and network side continue and can carry out normal up TBF data transmission procedure according to prior art.
In the above-mentioned steps 502, terminal can not returned response message to network side yet, and then following steps 503 ' can be used to step 504 in step 503～505 ' replace:
Step 503 ': if network has carried the TBF zero-time in point-to-point control messages, network side is from the TBF zero-time so, on down channel according to the USF form dispatching uplink resource of TUF indication.If network does not carry the TBF zero-time in point-to-point control messages, network side postpones a period of time after sending point-to-point control messages so, then the USF form dispatching uplink resource of indicating according to TUF on down channel.Determine according to actual needs by network side during this period of time.
Step 504 ': network side is judged dispatching on the up channel of terminal, whether is received the data that terminal is sent, if then carry out the corresponding business data interaction with terminal, otherwise go to step 501.
Among the above embodiment, be used for carrying the TUF of USF form in point-to-point control messages.Described TUF can also be placed on down wireless link control (Radio Link Control, RLC)/(Media Access Control is MAC) in the data block in the medium access control.Terminal also needs to read the TUF in the RLC/MAC piece reading descending USF simultaneously, and from next block period, terminal reads USF according to the USF form of TUF indication.
The device of the embodiment of the invention comprises as shown in Figure 6 as the lower part:
Ascending resource scheduling module 601, the USF form that is used for when setting up according to TBF is dispatched the ascending resource of portable terminal, and scheduling result is sent to portable terminal by transceiver module 602; When receive timing determining device 604 enable to indicate the time, ascending resource scheduling module 601 is carried out ascending resource scheduling according to the USF form after changing, and scheduling result is sent to portable terminal by transceiver module 602.Can also comprise a delay timer in the ascending resource scheduling module 601, be used to set the time of delay of carrying out before the ascending resource scheduling, when receiving the described then start delay timer that enables to indicate, when this timer expiry then carries out ascending resource scheduling.
Ascending resource scheduling module 601 realizes the concrete mode of ascending resource scheduling
Be the prior art content, do not belong to the present invention program's scope.
The multiplexing detection module 603 of TBF, be used for the channel multiplexing situation of TBF is detected, when channel multiplexing or demultiplexing occurring, whether the USF form of judging TBF needs to change, if the USF form after then will changing is sent to ascending resource scheduling module 601, and the USF form after will changing is sent to portable terminal by transceiver module 602; When the repeating transmission notice of receiving timing determining device 604 is then passed through the USF form of transceiver module 602 after portable terminal sends variation once more.
The USF form of TBF need change in following situation: between the TBF1 of 10ms USF and the TBF2 of 20msUSF channel multiplexing takes place, then the USF form of TBF1 will become 20ms; Under the described in the above situation, the channel demultiplexing takes place again in TBF1 and TBF2, and then the USF form of TBF1 becomes 10ms again again.When between the identical TBF of form channel multiplexing or demultiplexing taking place, need not to change the USF form.
According to the replacement scheme of the embodiment of the invention, portable terminal can not return response message, and then ascending resource scheduling module 601 is received from the USF form after the variation of the multiplexing detection module 603 of TBF and just begun to carry out ascending resource scheduling; And being judged as of timing determining device 604: judge the upstream data that whether transceiver module 602 is received from portable terminal before the scheduling timer expiry, if stop to dispatch timer; Otherwise the multiplexing detection module 603 of notice TBF resends the USF form after the variation, and restarts the scheduling timer.
Among the above embodiment, the TUF that is used for carrying the USF form can also be placed on the point-to-multipoint control messages, and a plurality of up TBF place terminal that described point-to-multipoint control messages can be re-used reads.The handling process basically identical of the point-to-point control messages carrying of its concrete handling process and above-mentioned employing TUF is so repeat no more.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of implementation method of dynamically scheduling uplink resources for each TBF distributes corresponding uplink state sign USF, is characterized in that this method comprises the steps: when setting up temporary up-link block flow TBF
In up TBF data transmission procedure, when the USF form of described TBF changes, USF form after network side will change by grouping time slot replacement message or many TBF time slot replacement message is notified terminal, and carries out ascending resource scheduling according to the USF form after changing;
Wherein, described terminal is in order to reading the USF that the corresponding down channel of described TBF carries according to the USF form after changing in the described notice, and according to the USF value that is read by up TBF transmission upstream data.
2, method according to claim 1, it is characterized in that, USF form notice terminal behind described will the variation is: generate TUF according to the USF form after changing, described TUF is carried in the down wireless link control RLC/ media access control MAC piece, and sends described RLC/MAC piece to terminal.
3, method according to claim 1 is characterized in that, described network side carries out further comprising before the ascending resource scheduling according to the USF form after changing: network side is with TBF zero-time notice terminal;
Then described network side carries out ascending resource scheduling according to the USF form after changing: network side begins to carry out ascending resource scheduling according to the USF form after changing in described TBF zero-time;
Describedly read the USF that the corresponding down channel of described TBF carries and be: terminal reads the USF in the downlink data block from described TBF zero-time.
4, method according to claim 1, it is characterized in that, described network side carries out further comprising before the ascending resource scheduling according to the USF form after changing: network side postpones one self-defined period, and the self-defined time span of described delay is set according to actual needs by network side;
Describedly read the USF that the corresponding down channel of described TBF carries and be: from the next block period of the moment place block period that receives described grouping time slot replacement message or many TBF time slot replacement message, terminal reads the USF that down channel carries.
5, according to each described method of claim 1 to 4, it is characterized in that, described method further comprises: after the USF form notice terminal after network side will change by grouping time slot replacement message or many TBF time slot replacement message, and the response message that the network side receiving terminal returns.
6, method according to claim 5 is characterized in that, described method further comprises:
After the USF form notice terminal after described network side will change by grouping time slot replacement message or many TBF time slot replacement message, network side judges whether to receive the response message of self terminal, if then carry out ascending resource scheduling according to the USF form after changing, otherwise the USF form notice terminal after will changing by grouping time slot replacement message or many TBF time slot replacement message again.
7, according to each described method of claim 1～4, it is characterized in that, described method further comprises: network side is judged the upstream data of whether receiving terminal on the up TBF that is dispatched, if then the normal reception of network side comes the upstream data of self terminal.
8, a kind of device that is used to realize ascending resource scheduling is characterized in that, comprising:
The ascending resource scheduling module is used for the USF form when setting up according to TBF or from the USF form of the multiplexing detection module of TBF the ascending resource of portable terminal is dispatched, and scheduling result is sent to portable terminal by transceiver module;
Transceiver module is used for the ascending resource scheduling result from the ascending resource scheduling module is sent to portable terminal; To be sent to portable terminal from the USF form after the variation of the multiplexing detection module of TBF;
The multiplexing detection module of TBF, be used for the channel multiplexing situation of TBF is detected, when channel multiplexing or demultiplexing occurring, whether the USF form of judging TBF needs to change, USF form after will changing according to judged result is sent to the ascending resource scheduling module, and the USF form after will changing is sent to portable terminal by transceiver module.
9, device according to claim 8 is characterized in that, described ascending resource scheduling module further comprises delay timer, is used to set the time of delay that begins to carry out before the ascending resource scheduling.
10, device according to claim 9, it is characterized in that, this device further comprises and has the timing judge module of dispatching timer, when the ascending resource scheduling module is received from the USF form after the variation of the multiplexing detection module of TBF, then starts the scheduling timer; Judge whether the preceding transceiver module of described scheduling timer expiry receives the upstream data from portable terminal, send the scheduling enable signal according to judged result to up scheduler module, perhaps restart described scheduling timer and notify the multiplexing detection module of the TBF USF form after portable terminal sends variation once more.
11, device according to claim 10 is characterized in that, described transceiver module is further used for receiving the response message from portable terminal;
Then the timing judge module is further used for, judge whether the preceding transceiver module of described scheduling timer expiry receives the response message from portable terminal, send the scheduling enable signal according to judged result to up scheduler module, perhaps restart described scheduling timer and notify the multiplexing detection module of the TBF USF form after portable terminal sends variation once more.
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| US8374133B2 (en) * | 2009-02-06 | 2013-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Shared Uplink Notification Bursts (SUNB) |
| CN102238623B (en) * | 2010-05-06 | 2014-04-09 | 中兴通讯股份有限公司 | Method for accelerating status response of control window of wireless link and base station subsystem |
| CN102752794B (en) * | 2011-04-18 | 2016-10-05 | 华为技术有限公司 | Method, device and the transmission system that a kind of data block sends, receives |
| CN104796994B (en) * | 2015-04-28 | 2018-07-10 | 江苏物联网研究发展中心 | The resource regulating method of wireless communication system |
| CN104994588B (en) * | 2015-05-18 | 2018-12-25 | 熊猫电子集团有限公司 | A kind of GMR-1 3G terminal RLC/MAC data dispatching method |
| CN106169947A (en) * | 2016-07-11 | 2016-11-30 | 美的集团股份有限公司 | Data transmission method, the first equipment and the second equipment |
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