CN105307154B - A kind of terminal report method based on TD-LTE group system - Google Patents
A kind of terminal report method based on TD-LTE group system Download PDFInfo
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- CN105307154B CN105307154B CN201410359384.6A CN201410359384A CN105307154B CN 105307154 B CN105307154 B CN 105307154B CN 201410359384 A CN201410359384 A CN 201410359384A CN 105307154 B CN105307154 B CN 105307154B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
A kind of terminal report method based on TD-LTE group system, which comprises in competition random access procedure, user UE sends first time scheduling of upstream transmissions to base station eNB；ENB determines the power grade of UE according to the first time scheduling of upstream transmissions.After the embodiment of the present invention, network side can be with the power grade of timely learning terminal.
Description
Technical field
This application involves fields of communication technology, report more particularly, to a kind of terminal based on TD-LTE group system
Method.
Background technique
TD-LTE technology is new generation broadband mobile communication wireless access technology, with existing 2G, 3G mobile communication system
Wireless access technology is compared, and has the characteristics that transmission rate is high, propagation delay time is small, high QoS guarantee.In existing TD-LTE technology
On, increase the characteristic of group service, realizes that TD-LTE wideband digital trunked communication system is the developing direction of trunked communication system.
Wideband digital trunked communication system based on TD-LTE technology can not only support the various of TD-LTE mobile communication system itself
Multimedia service, and basic trunked call service and Cluster Multimedia business can be provided, such as voice group call service, voice list
Exhale, visual group exhale, visual individual calling, broadcast & call, real-time video transmission etc..
Trunked communication system is developed, the dedicated nothing towards a variety of industrial applications to meet industry command scheduling demand
Line communication system.Trunked communication system has in public safety, communications and transportation, public utilities, petrochemical industry, industry and commerce and army
It is widely applied.Some industrial applications need still to be able to carry out when colony terminal shadow region in the cell or cell edge
The biggish business of rate, and to guarantee the service quality of the colony terminal.It, can under the premise of not changing existing network deployment
Higher data throughout is obtained to increase the peak power output of UE.Currently, the wideband digital collection based on TD-LTE technology
Group communication system, the peak power output of existing colony terminal follow 3GPP LTE protocol, current defined power
The requirement of the terminal of grade 3 is that the peak power output in channel width under any transmitted bandwidth is 23dBm, and this terminal claims
For LTE standard power colony terminal.
Provide that the power of TD-LTE terminal (UE) there are 4 grades in LTE protocol.Currently define only power grade 3
It is required that, it is desirable that for all TDD frequency ranges, the peak power output in channel width under any transmitted bandwidth is 23dBm, is held
It is limited to 2dB.
That is, a kind of terminal of power grade is only existed in LTE system at present, and the power grade information of terminal
It is not report network side.It and is to meet the needs of industry customer there are many different capacity etc. based on TD-LTE trunked communication system
The terminal of grade.It is to need to know terminal power class information that network side, which carries out wireless resource management,.For this purpose, existing in the prior art
Network side can not know the problem of power grade of terminal.
Summary of the invention
The embodiment of the present invention proposes that a kind of terminal report method based on TD-LTE group system, network side can obtain in time
Know the power grade of terminal.
The technical solution of inventive embodiments is as follows:
A kind of terminal report method based on TD-LTE group system, which comprises
In competition random access procedure, user UE sends first time scheduling of upstream transmissions to base station eNB；
ENB determines the power grade of UE according to the first time scheduling of upstream transmissions.
It does not include the of UE power grade that the UE sends first time scheduling of upstream transmissions to include: UE to eNB send to eNB
Scheduling of upstream transmissions；
The eNB determines that the power grade of UE includes: eNB according to described first according to the first time scheduling of upstream transmissions
Secondary scheduling of upstream transmissions determines that the power grade of UE is power grade 3.
The UE sends first time scheduling of upstream transmissions to eNB
For UE on common control channel CCCH channel, being sent by protocol Data Unit MAC PDU to eNB includes that cluster is whole
Hold the first time scheduling of upstream transmissions of capability report medium access control MAC Control Element, the colony terminal capability report MAC
Control unit includes UE power grade.
The MAC PDU includes: colony terminal capability report MAC Control Element and LCID is 00000 corresponding SDU.
The first time scheduling of upstream transmissions further comprises radio resource control RRC connection request message or RRC
Connection reconstruction request message.
The UE is high-power terminal, and the UE is further used for triggering colony terminal capability report MAC Control Element.
From in above-mentioned technical proposal as can be seen that due to competition random access procedure in, UE to eNB send for the first time adjust
Spend uplink；ENB can determine the power grade of UE according to the first time scheduling of upstream transmissions.Network side in this way can be with
The power grade of timely learning terminal.
Detailed description of the invention
Fig. 1 is competitive mode random access procedure schematic diagram；
Fig. 2 is the terminal report flow schematic diagram based on TD-LTE group system；
Fig. 3 is colony terminal capability report MAC Control Element structural schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention express to be more clearly understood, with reference to the accompanying drawing and specifically
The present invention is further described in more detail for embodiment.
In the embodiment of the present invention, in competition random access procedure, UE sends first time scheduling of upstream transmissions to eNB；eNB
The power grade of UE is determined further according to the first time scheduling of upstream transmissions.If there is no UE power in first time scheduling of upstream transmissions
Grade, then it is power grade 3 that eNB, which defaults the power grade of UE,；If there is UE power grade in first time scheduling of upstream transmissions,
ENB determines the power grade of UE according to first time scheduling of upstream transmissions.Network side can be with the power etc. of timely learning terminal in this way
Grade.
Wireless heterogeneous networks (RRC) connection management is a unusual critical process in RRC, it mainly include RRC connection this
Foundation, maintenance release and the modification process of body, further include the parameter configuration and control process carried out using RRC connection.Work as place
When the UE of idle (RRC_Idle) state wishes to initiate a calling or response paging, RRC connection establishment process can be triggered.When
In RRC connection status but when appearance exception needs to restore RRC connection, UE can trigger RRC connection re-establishment process.These all can
The random access procedure that the lower layer entities of triggering UE are at war with.For the angle of random access, in rrc-idle state
It is initially accessed under the scene of (i.e. RRC connection reconstruction) after being initially accessed (i.e. RRC connection foundation) or Radio Link Failure, UE is autonomous
Trigger the random access of competition.ENB is not the dedicated Preamble code of UE distribution for competing random access, but UE is randomly choosed
Preamble code and the random access initiated.
It is competitive mode random access procedure schematic diagram, the random access procedure master competed in LTE system referring to attached drawing 1
To include four steps:
101, UE random selection random access Preamble code (Msg1) in uplink random access channel (PRACH) carries out
It sends.
102, eNB transmits the random access response (Msg2) of MAC layer generation on downlink shared transmission channel (DL-SCH).
103, UE is shared in uplink transmits first time scheduling of upstream transmissions (Msg3) for the first time on transmission channel (UL-SCH).
After UE is properly received Msg2, according to uplink authorization in random access response for its distribution ascending resource on transmit
Msg3.The transmission of Msg3 message supports HARQ procedure, agreement to provide that the ascending resource of eNB distribution should at least support that net load is
The information of 56bit is transmitted.
It include different contents in Msg3 for different scenes.
1) it is initially accessed: carrying the RRC connection request message that rrc layer generates, do not include NAS message.
2) connection reconstruction: carrying the RRC connection reestablishment request message that rrc layer generates, and does not include NAS message.
3) switch: the C-RNTI of RRC handoff completion message and UE that transmission rrc layer generates, the case where resource allows
Under can simultaneous transmission buffer status report.
4) other scenes: the C-RNTI of UE is at least transmitted.
104, eNB is in DL-SCH channel contention resolved information (Msg4).
In view of competition random access procedure passes through the power grade information of the carrying user in Msg3, network in the present invention
Side can know terminal maximum transmission power earlier, to preferably carry out power control to terminal.In addition, as LTE is assisted
The continuous propulsion of version is discussed, reserved place before may be used in new version.In this way, can be aerial with trunked communication system
The reserved place that Interface design scheme occupies clashes.Broadband cluster communication system is progress evolution on the basis of LTE, if logical
The reserved place of some cell in RRC agreement is crossed to carry the power grade information of user, with LTE protocol clash in the future can
Energy property is bigger.Interaction between UE and eNB carries the power grade of UE, in this way during UE sends Msg3 to eNB
ENB can directly know the power grade of UE.
Technical solution of the present invention: in the group system based on TD-LTE technology, for high-power cluster terminal, competing
The content for increasing newly in Msg3 in formula random access procedure and carrying information is striven, the power grade of terminal is used to indicate；For LTE standard
Power colony terminal and standard LTE terminal do not increase this information content.After eNB receives Msg3, by whether being carried in Msg3
UE power grade judges the power grade of terminal.
It is the terminal report method flow diagram based on TD-LTE group system referring to attached drawing 2, specifically includes following step
It is rapid:
201, in competition random access procedure, UE sends first time scheduling of upstream transmissions to eNB.
If UE does not include UE power grade information into the first time scheduling of upstream transmissions that eNB is sent, illustrate the UE
Power grade be defaulted as power grade 3.
If UE includes UE power grade information into the first time scheduling of upstream transmissions that eNB is sent, illustrate that the UE is big
Power colony terminal.
For high-power cluster terminal, colony terminal capability report MAC Control Element is increased newly, for reporting colony terminal energy
Force information, including UE power grade.Passed through based on colony terminal capability report MAC Control Element in TD-LTE trunked communication system
The MAC PDU subheader of LCID is carried to identify.Include colony terminal power etc. in colony terminal capability report MAC Control Element
The field of grade.
Colony terminal capability report is generated in the form of MAC Control Element.MAC Control Element is included in agreement by UE
ENB is sent in data cell (MAC PDU).Mono- TB block of each UE can only at most transmit a MAC PDU.One MAC
PDU includes a MAC header, zero or more service data unit (MAC SDU), zero or more MAC Control Element, Yi Jisui
The fill part of machine.
One MAC PDU include one or more MAC PDU subheader；Each subheader correspond to a MAC SDU or
One MAC Control Element either fill part.
When LCID is 00000 in MAC PDU, i.e. MAC PDU is carried on CCCH channel, can be by colony terminal capability report
MAC Control Element and LCID are that 00000 corresponding SDU forms a MAC PDU, and is sent to eNB.At this point, increasing in Msg3
Colony terminal capability report MAC Control Element.
Because being initially accessed the competitive mode random access carried out, the RRC connection request message that rrc layer generates is carried in Msg3
(RRC Connection Request)；Because of the competitive mode random access of connection reconstruction, the RRC that rrc layer generates is carried in Msg3
Connection reconstruction request message (RRC Connection Reestablishment Request).These message are to be carried on CCCH
On channel.
202, eNB determines the power grade of UE according to the first time scheduling of upstream transmissions.
When UE to eNB send do not include UE power grade first time scheduling of upstream transmissions, eNB is according to the first time tune
Degree uplink determines that the power grade of UE is power grade 3.
When UE is on CCCH channel, sending to eNB includes dispatching colony terminal capability report MAC Control Element for the first time
Uplink, colony terminal capability report MAC Control Element include UE power grade.ENB is according to colony terminal capability report MAC
UE power grade knows the power grade of terminal in control unit.
In order to make it easy to understand, illustrating technical solution of the present invention below with reference to specific embodiment.
It include the word of colony terminal power grade based on colony terminal capability report format in TD-LTE trunked communication system
Section, field length can be determined according to colony terminal power grade type number.It is long with colony terminal power grade field below
For degree is 3bits, colony terminal capability report format is provided, as shown in Fig. 3.Table 1 is colony terminal power grade.Its
In, the domain PowerClass is colony terminal power grade field, is used to indicate the power grade of colony terminal, and field length is
3bits；R is reserved.
Table 1
| Index | Power Class |
| 0 | Power grade 1 |
| 1 | Power grade 2 |
| 2 | Power grade 3 |
| … | … |
| 6 | Power grade 7 |
| 7 | Power grade 8 |
When UE is high-power terminal, and MAC PDU includes the corresponding SDU of CCCH, it will triggering colony terminal ability
The transmission of report.Colony terminal capability report MAC Control Element and LCID are that 00000 corresponding SDU forms a MAC by UE
PDU, and it is sent to eNB.At this point, increasing colony terminal capability report MAC Control Element in Msg3.
ENB can determine the power grade of the terminal according to Msg3 is received.ENB carries out the corresponding MAC PDU of Msg3
It splits and demultiplexes, if not including colony terminal capability report MAC Control Element in the MAC PDU, eNB thinks the terminal
Power grade is 3；If including colony terminal capability report MAC Control Element in the MAC PDU, eNB is according to colony terminal energy
UE power grade knows the power grade of the terminal in power report MAC Control Element.In this way, eNB can know the power of terminal
Grade knows the maximum transmission power of the terminal further according to the power grade of terminal.ENB combination UE power grade, Ke Yigeng
Resource allocation and power control are carried out for user well, as much as possible reduction inter-cell interference, more reasonable distribution and effectively pipe
Limited radio resource in trunked communication system is managed, so that system performance and capacity reach joint optimum state.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (6)
1. a kind of terminal report method based on TD-LTE group system, which is characterized in that the described method includes:
In competition random access procedure, user UE sends first time scheduling of upstream transmissions to base station eNB；
ENB determines the power grade of UE according to the first time scheduling of upstream transmissions, comprising: if in first time scheduling of upstream transmissions
There is no UE power grade, it is determined that the power grade of UE is power grade 3；If there is UE power etc. in first time scheduling of upstream transmissions
Grade, then determine the power grade of UE according to the UE power grade in the first time scheduling of upstream transmissions.
2. according to claim 1 based on the terminal report method of TD-LTE group system, which is characterized in that the UE to
It includes: that UE is passed to the first time dispatching uplink that eNB transmission does not include UE power grade that eNB, which sends first time scheduling of upstream transmissions,
It is defeated；
The eNB determines that the power grade of UE includes: eNB according to the first time tune according to the first time scheduling of upstream transmissions
Degree uplink determines that the power grade of UE is power grade 3.
3. according to claim 1 based on the terminal report method of TD-LTE group system, which is characterized in that the UE to
ENB sends first time scheduling of upstream transmissions
For UE on common control channel CCCH channel, being sent by protocol Data Unit MAC PDU to eNB includes colony terminal energy
Power reports the first time scheduling of upstream transmissions of medium access control MAC Control Element, the colony terminal capability report MAC control
Unit includes UE power grade.
4. according to claim 3 based on the terminal report method of TD-LTE group system, which is characterized in that the MAC
PDU includes: colony terminal capability report MAC Control Element and LCID is 00000 corresponding SDU.
5. according to claim 3 based on the terminal report method of TD-LTE group system, which is characterized in that the first time
Scheduling of upstream transmissions further comprises radio resource control RRC connection request message or RRC connection reestablishment request message.
6. according to claim 3 based on the terminal report method of TD-LTE group system, which is characterized in that the UE is big
Power terminal, the UE are further used for triggering colony terminal capability report MAC Control Element；Wherein, high-power terminal is most
The big terminal of big output power value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410359384.6A CN105307154B (en) | 2014-07-25 | 2014-07-25 | A kind of terminal report method based on TD-LTE group system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410359384.6A CN105307154B (en) | 2014-07-25 | 2014-07-25 | A kind of terminal report method based on TD-LTE group system |
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| CN105307154A CN105307154A (en) | 2016-02-03 |
| CN105307154B true CN105307154B (en) | 2019-04-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107438232B (en) * | 2016-05-25 | 2019-11-19 | 大唐移动通信设备有限公司 | A kind of service condition of cluster group UE report and acquisition methods, device |
| WO2018061322A1 (en) * | 2016-09-29 | 2018-04-05 | 株式会社Ｎｔｔドコモ | User device and base station |
| CN110831224B (en) * | 2018-08-07 | 2021-10-01 | 维沃移动通信有限公司 | Random access method and terminal equipment |
| EP4018732A1 (en) * | 2019-08-23 | 2022-06-29 | Sony Group Corporation | Multiple power class operation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101272608A (en) * | 2007-03-21 | 2008-09-24 | 华为技术有限公司 | Interception reference signal transmission method and device |
| CN101998660A (en) * | 2009-08-12 | 2011-03-30 | 大唐移动通信设备有限公司 | Method, system and device for sending signaling |
| CN103546981A (en) * | 2012-07-16 | 2014-01-29 | 普天信息技术研究院有限公司 | Method and device for realizing competition-type random access |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8130667B2 (en) * | 2008-09-19 | 2012-03-06 | Texas Instruments Incorporated | Preamble group selection in random access of wireless networks |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101272608A (en) * | 2007-03-21 | 2008-09-24 | 华为技术有限公司 | Interception reference signal transmission method and device |
| CN101998660A (en) * | 2009-08-12 | 2011-03-30 | 大唐移动通信设备有限公司 | Method, system and device for sending signaling |
| CN103546981A (en) * | 2012-07-16 | 2014-01-29 | 普天信息技术研究院有限公司 | Method and device for realizing competition-type random access |
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