CN102547842A - Vent resource allocation method for RLC (radio link control) layer, poll position retransmission method for same, vent resource allocation device for same and poll position retransmission device for same - Google Patents
Vent resource allocation method for RLC (radio link control) layer, poll position retransmission method for same, vent resource allocation device for same and poll position retransmission device for same Download PDFInfo
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- CN102547842A CN102547842A CN2010105868296A CN201010586829A CN102547842A CN 102547842 A CN102547842 A CN 102547842A CN 2010105868296 A CN2010105868296 A CN 2010105868296A CN 201010586829 A CN201010586829 A CN 201010586829A CN 102547842 A CN102547842 A CN 102547842A
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Abstract
The invention relates to a vent resource allocation method for an RLC (radio link control) layer, a poll position retransmission method for the same, a vent resource allocation device for the same and a poll position retransmission device for the same. The vent resource allocation method includes the steps of after an RLC poll retransmission timer of one of a plurality of logical signal channels is detected in overtime, determining whether the current logical signal channel has data to be retransmitted or not when the RLC poll retransmission timer is in overtime, wherein if the current logical signal channel has the data to be retransmitted, poll positions are loaded into a first carrier comprising the data to be retransmitted and the first carrier is retransmitted; and if when the current logical signal channel has no data to be retransmitted, a minimum length space is reserved for the current logical signal channel for sufficiently retransmitting a second carrier, the space length required by the second carrier is smaller than that of the first carrier, and the second carrier carrying the poll positions is retransmitted by the current logical signal channel. Therefore, vent resources can be more effectively allocated by judging whether the logical signal channel with the RLC poll retransmission timer in overtime has practical needs for vent sources or not.
Description
Technical field
The present invention relates to 3GPP LTE technology, especially relate to poll bit repeating method and the device of radio link control layer (RLC, Radio Link Control).
Background technology
Radio Link control (RLC; Radio Link Control) protocol layer is in the Radio interface protocols stack of LTE system; Be the sub-layer of layer 2 (L2), be positioned on medium access control (MAC, the Media Access Control) layer; Rlc layer mainly is used to provide segmentation and the business of retransmitting, like link control, encapsulation and reorganization, cascade, user data transmission, error correction, protocol error detection and reparation etc.Each RLC entity is by Radio Resource control (RRC; Radio Resource Control) configuration and with transparent mode (TM; Transparent Mode), Unacknowledged Mode (UM, Unacknowledged Mode) and three kinds of patterns of affirmation mode (AM, Acknowledged Mode) are operated.
With affirmation mode, transmitter side transmits after adding the necessary control protocol overhead on the high level data, and can guarantee to be delivered to peer-entities.Because have automatic repeat requests (ARQ, Automatic Repeat reQuest) ability,, promptly notify the RLC entity of opposite end to retransmit this PDU if RLC receives wrong RLC PDU (Protocol Data Unit).Owing to include serial number information among the RLC PDU, support order or out of order submit of data to high level.The AM pattern is the mode standard of packet data transmission.
ARQ in the affirmation mode; Be to send message status report (Status Report) to transmitting terminal through rlc protocol entity receiving terminal; Rlc protocol entity transmitting terminal judges that according to the affirmation of the sequence in the message status report (ACK_SN), sequence (NACK_SN) unconfirmed which PDU has been received end and has acknowledged receipt of; Which PDU or PDU fragment need to retransmit, thereby guarantee reliability of data transmission.
In 3GPP TS 36.322 agreements; The trigger mechanism that rlc protocol entity receiving terminal sends message status report has two types; Wherein one type is rlc protocol entity transmitting terminal triggering mode: rlc protocol entity transmitting terminal is with the RLC head Polling position set of PDU, when rlc protocol entity receiving terminal is whenever received a PDU, if Polling position set is found in inspection; Think that then it is a polling message, triggers a message status report.After the automatic repeat requests of the mixing of this PDU (HARQ, Hybrid Automatic Repeat reQuest) reorders (Reordering) completion, then said message status report is sent to rlc protocol entity transmitting terminal.The situation that rlc protocol entity transmitting terminal sends polling message has following three kinds:
1) this PDU is last message that sends in the rlc protocol entity transmitting terminal buffering area;
2) payload user data of rlc protocol entity transmitting terminal transmission reaches the upper limit of the poll (POLL_BYTE) of RRC configuration, or the PDU number that rlc protocol entity transmitting terminal sends reaches the POLL_PDU number upper limit that RRC disposes;
3) the poll retransmission timer (T_poll_restransmit) of rlc protocol entity transmitting terminal configuration is overtime.
According to present agreement; After RLC poll retransmission timer is overtime; If transmission buffer (TRANSBUFFER) and retransmit in the buffer memory (RETRANS BUFFER) all free of data and can send out, perhaps send window is full etc., needs to select a kind of processing the in the following dual mode:
Method one): select the AMD PDU of SN=VT (S)-1 to retransmit (comprising poll bit)
Method two): select any AMD PDU who is not crossed to retransmit (comprising poll bit) by opposite end ACK.
No matter use which kind of method, on current logic channel, all need send the RLC data.These data may not be that needs retransmit, and are that current needs retransmit poll bit and have to select the carrier of a RLC AMDPDU as poll bit.Therefore, method one still is that the validity of the RLC AMD PDU data that method two retransmitted is not high.
If current also have on other logic channels have data to be transferred; The way of so above-mentioned prior art has been used limited empty resource beyond doubt; Gone to transmit the not high data of some validity, but do not had preferential select to transmit on other logic channels the real higher data of validity and go transmission.
Summary of the invention
One of the object of the invention provides a kind of device of interface-free resources distribution method of radio link control layer, to be provided at the interface-free resources utilization ratio under the occasion that needs the re-transmission poll bit.
Another object of the present invention provides a kind of poll bit repeating method and device of radio link control layer.
Based on one object of the present invention, propose a kind of poll bit repeating method of radio link control layer, following steps: the RLC poll retransmission timer of a wherein logic channel that detects a plurality of logic channels is overtime; Whether confirm has data to be passed on the overtime current logic channel of RLC poll retransmission timer; If on this current logic channel data to be transferred is arranged, poll bit is loaded in first carrier that comprises data to be transferred, and sends this first carrier; If do not have data to be transferred on this current logic channel, be that this current logic channel reserves enough minimum length spaces of transmission one second carrier, the required space length of this second carrier is less than this first carrier; And, on current logic channel, send and carry second carrier of poll bit.
In one embodiment of this invention, the step in the minimum length space of this second carrier of transmission also comprises afterwards for this current logic channel is reserved enough:
Current spendable residue interface-free resources is distributed to other logic channels to be used.
In one embodiment of this invention, this first carrier is AMD PDU, and this second carrier is AMD PDUSEG.
Based on another object of the present invention, a kind of interface-free resources distribution method of radio link control layer is proposed, may further comprise the steps: the RLC poll retransmission timer of a wherein logic channel that detects a plurality of logic channels is overtime; Whether confirm has data to be passed on the overtime current logic channel of RLC poll retransmission timer; If on this current logic channel data to be transferred is arranged, is preferably the interface-free resources that this logical channel assignment can be used; And if do not have data to be transferred on this current logic channel, for this current logic channel is reserved enough minimum length spaces of transmission poll bit.
The present invention proposes a kind of poll bit repeating method of radio link control layer in addition, may further comprise the steps.Detect the RLC poll retransmission timer of a wherein logic channel of a plurality of logic channels overtime after, whether confirm has data to be passed on the overtime current logic channel of RLC poll retransmission timer.If on this current logic channel data to be transferred is arranged, poll bit is loaded in first carrier that comprises data to be transferred, and sends this first carrier.And if do not have data to be transferred on this current logic channel, be that this current logic channel is reserved enough minimum length spaces of transmission one second carrier, the required space length of this second carrier is less than this first carrier; And, current spendable residue interface-free resources is distributed to other logic channels uses.Afterwards; Judge that other logic channels finish using remaining interface-free resources,, retransmit the carrier of poll bit according to the size decision of residue interface-free resources if do not finish using; If finish using, then on current logic channel, send and carry second carrier of poll bit.
In one embodiment of this invention; Size according to the residue interface-free resources determines the step of the carrier of re-transmission poll bit to comprise: judge whether remaining interface-free resources enough sends one first carrier; If it is enough; On current logic channel, send and carry first carrier of poll bit,, then on current logic channel, send and carry second carrier of poll bit if not enough.
In one embodiment of this invention, first carrier can be AMD PDU, and this second carrier can be AMDPDU SEG.
From another viewpoint, the present invention proposes a kind of poll bit retransmission arrangement of radio link control layer, comprising: the overtime device of RLC poll retransmission timer that is used to detect a wherein logic channel of a plurality of logic channels; Be used for confirming whether to have on the overtime current logic channel of RLC poll retransmission timer the device of data to be passed; If be used on this current logic channel data to be transferred being arranged, poll bit be loaded in first carrier that comprises data to be transferred, and send the device of this first carrier; If be used for not having data to be transferred on this current logic channel, for this current logic channel is reserved enough devices in the minimum length space of transmission one second carrier, the required space length of this second carrier is less than this first carrier; And the device that is used on current logic channel, sending second carrier that carries poll bit.
The present invention proposes a kind of poll bit retransmission arrangement of radio link control layer in addition, comprising: the overtime device of RLC poll retransmission timer that is used to detect a wherein logic channel of a plurality of logic channels; Be used for confirming whether to have on the overtime current logic channel of RLC poll retransmission timer the device of data to be passed; If be used on this current logic channel data to be transferred being arranged, poll bit be loaded in first carrier that comprises data to be transferred, and send the device of this first carrier; If be used for not having data to be transferred on this current logic channel, for this current logic channel is reserved enough devices in the minimum length space of transmission one second carrier, the required space length of this second carrier is less than this first carrier; Be used for current spendable residue interface-free resources is distributed to the device that other logic channels use; And be used to judge that other logic channels finish using remaining interface-free resources; If do not finish using; Carrier according to the size decision re-transmission poll bit that remains interface-free resources if finish using, then sends the device of second carrier that carries poll bit on current logic channel.
The present invention also proposes a kind of interface-free resources distributor of radio link control layer, comprising: the overtime device of RLC poll retransmission timer that is used to detect a wherein logic channel of a plurality of logic channels; Be used for confirming whether to have on the overtime current logic channel of RLC poll retransmission timer the device of data to be passed; If be used on this current logic channel data to be transferred being arranged, be preferably the device of the interface-free resources that this logical channel assignment can use; And if be used for not having data to be transferred on this current logic channel, for this current logic channel is reserved enough devices in the minimum length space of transmission poll bit.
Based on the summarization techniques scheme of above description, it is that the poll retransmission timer is overtime that the present invention can only pass through, but need not transmit the minimum resource space of logic channel reservation of real data, when upstream data sends, resource is preferentially given other logic channels.Thereby on interface-free resources, send the higher information of validity as much as possible, improve the utilization ratio of interface-free resources.
Description of drawings
For let above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, elaborate below in conjunction with the accompanying drawing specific embodiments of the invention, wherein:
Fig. 1 illustrates the protocol layer logic of LTE terminal equipment.
Fig. 2 illustrates the repeating method flow process of the RLC poll bit of first embodiment of the invention.
Fig. 3 illustrates the repeating method flow process of the RLC poll bit of second embodiment of the invention.
Embodiment
In the protocol layer logic of LTE terminal equipment shown in Figure 1, RLC (Radio Link Control) layer 20 is positioned under RRC (the Radio Resource Control) layer 10, and is positioned on MAC (the Media Access Control) layer 30.
Logic channel is between rlc layer 20 and MAC layer, and the MAC layer provides data transmission service on logic channel.Logic channel is divided according to the data transmission service type that the MAC layer provides.Logic channel is divided into two types usually: control channel and Traffic Channel.Control channel only is used for the transmission of control plane information, comprises BCCH (BCCH), Paging Control Channel (PCCH), CCCH (CCCH), DCCH (DCCH), SHCCH Shared Channel Control Channel (SHCCH).Traffic Channel only is used for the transmission of user plane channel, comprising: Dedicated Traffic Channel (DTCH), CTCH Common Traffic Channel (CTCH).Rlc layer 20 transmits PDU through each logic channel to the MAC layer.The terminal equipment limited empty resource will satisfy the transmission requirement of above-mentioned these logic channels.
Usually, overtime when the RLC of a certain logic channel poll retransmission timer, available interface-free resources will at first satisfy the transmission demand of this logic channel at present.After this, remaining interface-free resources is distributed to the lower logic channel of priority.But, if do not have data to be transferred on this logic channel, and still to distribute enough interface-free resources of transmission AMD PDU, this method of salary distribution can reduce the service efficiency of interface-free resources.
Among the embodiment that will describe below, whether there is actual needs, comes to distribute more efficiently interface-free resources interface-free resources through differentiating that overtime logic channel of RLC poll retransmission timer.When this logic channel only is need to retransmit poll bit and during the free of data transmission demand, the interface-free resources that it should be assigned with will be lowered.The interface-free resources of saving thus will more preferably be distributed to other logic channels and use.See that from a certain angle this method of salary distribution improves the service efficiency of interface-free resources through slightly reducing the overtime logic channel of RLC poll retransmission timer in the priority of obtaining aspect the interface-free resources.
Fig. 2 illustrates the repeating method flow process of the RLC poll bit of first embodiment of the invention, and wherein the dotted line top is the allocation flow of interface-free resources, and the dotted line below is the poll bit transfer process.In this embodiment, if find that in step S10 the RLC poll retransmission timer of a certain logic channel in a plurality of logic channels is overtime, flow process gets into step S11 so, confirms whether data to be passed are arranged on this logic channel.If on this logic channel data to be transferred is arranged, flow process jumps to step S14, then according to existing method, with current all available interface-free resources preferentially to this logical channel assignment.At step S15, flow process can be loaded into poll bit among the AMDPDU.Poll bit will be transmitted with the AMD PDU that carries data like this.
On the contrary, if do not have data to be transferred on this logic channel, flow process enters into step S12.In this step, only enough send the minimum length space of poll bit for this logical channel assignment.Usually, the space length of reservation only needs the carrier of enough poll bit to send.
With regard to present agreement, AMD PDU SEG may diminish to and only takies 5 bytes.Therefore select for use AMD PDU SEG as the carrier that sends.And, with the space length of 5 bytes as reservation.The quantity that is appreciated that " 5 bytes " only shows the minimum space length that present embodiment can be reserved at this, is not as restriction of the present invention.
At step S13, can send the AMD PDU SEG of 5 bytes, and carry poll bit.
Like this, for the overtime logic channel of RLC poll retransmission timer occurring, it retransmits the required interface-free resources of poll bit and will reduce significantly.Thereby the interface-free resources that discharges thus can be applied to other aspects, for example other logic channels.
Fig. 3 illustrates the embodiment that the residue interface-free resources is applied to other logic channels, and wherein the dotted line top is the allocation flow of interface-free resources, and the dotted line below is a transfer process.With reference to shown in Figure 3, in this second embodiment, if find that in step S20 the RLC poll retransmission timer of a certain logic channel in a plurality of logic channels is overtime, flow process gets into step S21 so, confirms whether data to be passed are arranged on this logic channel.If on this logic channel data to be transferred is arranged, flow process jumps to step S27, with current all available interface-free resources preferentially to this logical channel assignment.At step S28, flow process can be loaded into poll bit among the AMD PDU.Poll bit will be transmitted with the AMD PDU that carries data like this.
On the contrary, if do not have data to be transferred on this logic channel, flow process enters into step S22.In this step, only enough send the minimum length space of poll bit for this logical channel assignment.Of last embodiment, therefore select for use AMD PDU SEG as the carrier that sends.And, with the space length of 5 bytes as reservation.
Flow process gets into step S23 then, current spendable residue interface-free resources is distributed to other logic channels use.These logic channels have lower priority than current logic channel usually.Through this distribution, can compress the resource occupation on the current logic channel, guarantee the higher data of prioritised transmission validity on eating dishes without rice or wine.
At step S24, remaining interface-free resources is finished using if find other logic channels, then in step S25, the AMD PDU SEG that on current logic channel, only to send a length be 5 bytes, and carry poll bit.If other logic channels still have surplus resources after using resource; In the carrier of step S26 according to the size decision re-transmission of surplus resources, if residual resource is enough sent AMD PDU, then flow process is in step S28 so; On current logic channel, retransmit AMD PDU, and carry poll bit.Otherwise flow process jumps to step S25, the AMD PDUSEG that on current logic channel, only to send a length be 5 bytes, and carry poll bit.
The above embodiment that describes of the present invention through only reserving minimum resource space (only enough retransmitting poll bit gets final product) for the overtime logic channel of poll retransmission timer, when upstream data sends, preferentially gives other logic channels with resource.Thereby on interface-free resources, send the higher information of validity as much as possible, improve the utilization ratio of interface-free resources.
Though the present invention discloses as above with preferred embodiment; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little modification and perfect, so protection scope of the present invention is when being as the criterion with what claims defined.
Claims (17)
1. the poll bit repeating method of a radio link control layer may further comprise the steps:
The RLC poll retransmission timer of a wherein logic channel that detects a plurality of logic channels is overtime;
Whether confirm has data to be passed on the overtime current logic channel of RLC poll retransmission timer;
If on this current logic channel data to be transferred is arranged, poll bit is loaded in first carrier that comprises data to be transferred, and sends this first carrier;
If do not have data to be transferred on this current logic channel, be that this current logic channel reserves enough minimum length spaces of transmission one second carrier, the required space length of this second carrier is less than this first carrier; And
On current logic channel, send and carry second carrier of poll bit.
2. the method for claim 1 is characterized in that, the step of reserving the minimum length space of enough sending this second carrier for this current logic channel also comprises afterwards:
Current spendable residue interface-free resources is distributed to other logic channels to be used.
3. the method for claim 1 is characterized in that, this first carrier is AMD PDU, and this second carrier is AMD PDU SEG.
4. the interface-free resources distribution method of a radio link control layer may further comprise the steps:
The RLC poll retransmission timer of a wherein logic channel that detects a plurality of logic channels is overtime;
Whether confirm has data to be passed on the overtime current logic channel of RLC poll retransmission timer;
If on this current logic channel data to be transferred is arranged, is preferably the interface-free resources that this logical channel assignment can be used; And
If do not have data to be transferred on this current logic channel, for this current logic channel is reserved the minimum length space of enough sending poll bit.
5. method as claimed in claim 4 is characterized in that, the step of reserving the minimum length space of enough sending poll bit for this current logic channel also comprises afterwards:
Current spendable residue interface-free resources is distributed to other logic channels to be used.
6. method as claimed in claim 4 is characterized in that, this minimum length space of enough sending poll bit is used to send AMD PDU SEG and carries poll bit.
7. the poll bit repeating method of a radio link control layer may further comprise the steps:
The RLC poll retransmission timer of a wherein logic channel that detects a plurality of logic channels is overtime;
Whether confirm has data to be passed on the overtime current logic channel of RLC poll retransmission timer;
If on this current logic channel data to be transferred is arranged, poll bit is loaded in first carrier that comprises data to be transferred, and sends this first carrier;
If do not have data to be transferred on this current logic channel, be that this current logic channel reserves enough minimum length spaces of transmission one second carrier, the required space length of this second carrier is less than this first carrier;
Current spendable residue interface-free resources is distributed to other logic channels to be used; And
Judge that other logic channels finish using remaining interface-free resources; If do not finish using; Carrier according to the size decision re-transmission poll bit that remains interface-free resources if finish using, then sends on current logic channel and carries second carrier of poll bit.
8. method as claimed in claim 7 is characterized in that, the step that retransmits the carrier of poll bit according to the size decision that remains interface-free resources comprises:
Judge whether remaining interface-free resources enough sends one first carrier,, on current logic channel, send and carry first carrier of poll bit,, then on current logic channel, send and carry second carrier of poll bit if not enough if enough.
9. like claim 7 or 8 described methods, it is characterized in that this first carrier is AMD PDU, this second carrier is AMD PDU SEG.
10. the poll bit retransmission arrangement of a radio link control layer comprises:
Be used to detect the overtime device of RLC poll retransmission timer of a wherein logic channel of a plurality of logic channels;
Be used for confirming whether to have on the overtime current logic channel of RLC poll retransmission timer the device of data to be passed;
If be used on this current logic channel data to be transferred being arranged, poll bit be loaded in first carrier that comprises data to be transferred, and send the device of this first carrier;
If be used for not having data to be transferred on this current logic channel, for this current logic channel is reserved enough devices in the minimum length space of transmission one second carrier, the required space length of this second carrier is less than this first carrier; And
Be used on current logic channel, sending the device of second carrier that carries poll bit.
11. device as claimed in claim 10 is characterized in that, also comprises:
Be used for current spendable residue interface-free resources is distributed to the device that other logic channels use.
12. device as claimed in claim 10 is characterized in that, this first carrier is AMD PDU, and this second carrier is AMD PDU SEG.
13. the interface-free resources distributor of a radio link control layer comprises:
Be used to detect the overtime device of RLC poll retransmission timer of a wherein logic channel of a plurality of logic channels;
Be used for confirming whether to have on the overtime current logic channel of RLC poll retransmission timer the device of data to be passed;
If be used on this current logic channel data to be transferred being arranged, be preferably the device of the interface-free resources that this logical channel assignment can use; And
If be used for not having data to be transferred on this current logic channel, for this current logic channel is reserved the device that enough sends the minimum length space of poll bit.
14. device as claimed in claim 13 is characterized in that, also comprises:
Be used for current spendable residue interface-free resources is distributed to the device that other logic channels use.
15. device as claimed in claim 13 is characterized in that, this minimum length space of enough sending poll bit is used to send AMD PDU SEG and carries poll bit.
16. the poll bit retransmission arrangement of a radio link control layer comprises:
Be used to detect the overtime device of RLC poll retransmission timer of a wherein logic channel of a plurality of logic channels;
Be used for confirming whether to have on the overtime current logic channel of RLC poll retransmission timer the device of data to be passed;
If be used on this current logic channel data to be transferred being arranged, poll bit be loaded in first carrier that comprises data to be transferred, and send the device of this first carrier;
If be used for not having data to be transferred on this current logic channel, for this current logic channel is reserved enough devices in the minimum length space of transmission one second carrier, the required space length of this second carrier is less than this first carrier;
Be used for current spendable residue interface-free resources is distributed to the device that other logic channels use; And
Be used to judge that other logic channels finish using remaining interface-free resources; If do not finish using; Carrier according to the size decision re-transmission poll bit that remains interface-free resources if finish using, then sends the device of second carrier that carries poll bit on current logic channel.
17. device as claimed in claim 16 is characterized in that, this first carrier is AMD PDU, and this second carrier is AMD PDU SEG.
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| CN201010586829.6A CN102547842B (en) | 2010-12-14 | 2010-12-14 | Vent resource allocation method for RLC (radio link control) layer, poll position retransmission method for same, vent resource allocation device for same and poll position retransmission device for same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105050057A (en) * | 2015-06-15 | 2015-11-11 | 哈尔滨海能达科技有限公司 | Non-real-time voice calling method, trunking communication system, and control apparatus and terminal thereof |
| WO2019153937A1 (en) * | 2018-02-09 | 2019-08-15 | 夏普株式会社 | Wireless communication method and equipment |
| CN112671515A (en) * | 2020-12-09 | 2021-04-16 | 中国电子科技集团公司第五十四研究所 | Method for transmitting limited retransmission data of radio link control layer |
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| CN1422086A (en) * | 2001-11-24 | 2003-06-04 | Lg电子株式会社 | System and method for polling transmitting protocol data unit in buffer memory |
| WO2007078156A2 (en) * | 2006-01-05 | 2007-07-12 | Lg Electronics Inc. | Transmitting data in a mobile communication system |
| WO2008137594A1 (en) * | 2007-05-01 | 2008-11-13 | Qualcomm Incorporated | Method and apparatus for polling in a wireless communication system |
| CN101699782A (en) * | 2009-11-06 | 2010-04-28 | 中兴通讯股份有限公司 | Processing method and device of wireless link retransmitted data |
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| CN1422086A (en) * | 2001-11-24 | 2003-06-04 | Lg电子株式会社 | System and method for polling transmitting protocol data unit in buffer memory |
| WO2007078156A2 (en) * | 2006-01-05 | 2007-07-12 | Lg Electronics Inc. | Transmitting data in a mobile communication system |
| WO2008137594A1 (en) * | 2007-05-01 | 2008-11-13 | Qualcomm Incorporated | Method and apparatus for polling in a wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105050057A (en) * | 2015-06-15 | 2015-11-11 | 哈尔滨海能达科技有限公司 | Non-real-time voice calling method, trunking communication system, and control apparatus and terminal thereof |
| CN105050057B (en) * | 2015-06-15 | 2018-06-15 | 哈尔滨海能达科技有限公司 | Non-real time voice method of calling, trunked communication system and its control device and terminal |
| WO2019153937A1 (en) * | 2018-02-09 | 2019-08-15 | 夏普株式会社 | Wireless communication method and equipment |
| CN112671515A (en) * | 2020-12-09 | 2021-04-16 | 中国电子科技集团公司第五十四研究所 | Method for transmitting limited retransmission data of radio link control layer |
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| CN102547842B (en) | 2014-11-05 |
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