CN101541036A - Working method and system of enhanced long-term evolution system terminal - Google Patents
Working method and system of enhanced long-term evolution system terminal Download PDFInfo
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- CN101541036A CN101541036A CN200910135590A CN200910135590A CN101541036A CN 101541036 A CN101541036 A CN 101541036A CN 200910135590 A CN200910135590 A CN 200910135590A CN 200910135590 A CN200910135590 A CN 200910135590A CN 101541036 A CN101541036 A CN 101541036A
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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
Abstract
The invention discloses a working method and a working system of an enhanced long-term evolution system terminal, comprising: the enhanced long-term evolution system terminal in a connected state works independently on a non-backward compatible carrier wave without the information support on a backward compatible carrier wave. The method is simple and effective; when transmitting data on a non-backward compatible composition carrier wave, an LTE-A terminal can work independently on one composition carrier wave of such type, without monitoring other composition carrier waves, thus being capable of providing a flexible work mechanism for the LTE-A terminal and also being conducive to the power saving of the LTE-A terminal; and the LTE-A terminal resides only on the backward compatible carrier wave when in idle state, the working mode simply and effectively resolves the problem that the downlink composition carrier wave is not clear in the process of random access. And the method has smaller effect on protocol modification.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to the method for work and the system that strengthen LTE-A terminal in Long Term Evolution (Long Term Evolution-Advanced the is called for short LTE-A) system.
Background technology
Development along with mobile industry, and the user is to the continuous growth of mobile data services demand, people are more and more higher to the requirement of the speed of mobile communication and service quality (Qos), so at 3G (Third Generation) Moblie (3rd Generation, be called for short 3G) also do not have before the extensive commercialization, person skilled has just begun the research-and-development activity to next generation mobile communication system, wherein relatively be typically third generation partner program (3rd Generation Partnership Project, abbreviation 3GPP) Long Term Evolution (the Long Term Evolution that starts, be called for short LTE) project, the available maximum spectrum bandwidth of LTE system is 20MHz (megahertz).Along with the further evolution of network, the LTE-A system can provide the spectral bandwidth up to 100MHz as the evolution system of LTE system, supports more flexible higher-quality communication, will possess better compatibility backward to the LTE system simultaneously.By a plurality of carrier waves (CC, Component Carrier) of forming, the LTE-A terminal may be simultaneously operated on one or more composition carrier waves in the LTE-A system, and a LTE terminal can only be operated on the composition carrier wave of some backward compatibility.
In the early stage of LTE-A system, standard was discussed, discussed and to have supported up-downgoing to form the asymmetrical situation of carrier number.Generally speaking in the configuration of system, descending composition carrier number is greater than up composition carrier number.Form under the asymmetrical situation of carrier number in up-downgoing, subscriber equipment is after sending the random access channel preamble sequence on the up composition carrier wave, strengthen the base station and do not know on which descending composition carrier wave of up composition carrier wave pairing therewith, to send random access channel responses, set up message (message 4) and also have descending composition carrier wave indeterminate (or being called ambiguity) problem for the control of the Radio Resource in the subsequent process (Radio Resource Control is called for short RRC) connection.
In standard [TS 36.101 840] version, increased the restriction that the LTE terminal is received and sends the data frequency interval.The LTE terminal in each frequency band reception and the centre frequency that sends data need satisfy the requirement shown in the following table at interval:
| Frequency band | The transmitting-receiving centre carrier frequency at interval |
| 1 | 190MHz |
| 2 | 80MHz. |
| 3 | 95MHz. |
| 4 | 400MHz |
| 5 | 45MHz |
| 6 | 45MHz |
| 7 | 120MHz |
| 8 | 45MHz |
| 9 | 95MHz |
| 10 | 400MHz |
| 11 | 48MHz |
| 12 | 30MHz |
| 13 | -31MHz |
| 14 | -30MHz |
| 17 | 30MHz |
Form under the asymmetrical situation of carrier number in up-downgoing, all descending composition carrier waves all can not be configured to backward compatibility, the up composition carrier wave that can insert for the LTE terminal, the descending composition centre carrier frequency of its correspondence has also just been determined, like this, when carrier number is formed in specific asymmetric up-downgoing in the sub-district, because the LTE terminal can't be worked on the transmitting-receiving frequency of non-default interval, so be that the descending composition carrier wave that non-default interval concerns is configured to non-backward compatible carrier waves with up composition carrier wave generally speaking, be configured to the backward compatibility carrier wave and will satisfy the carrier wave of going up the table restriction with up composition carrier wave, so, modal situation is, the backward compatibility descending composition carrier wave corresponding with a up composition carrier wave has only one, and the descending composition carrier wave of non-backward compatible corresponding with it has one or more.On this basis, be the problems that needs are determined existing non-backward compatible to form under the scene of carrier wave how the LTE-A terminal to work.
About the working method of LTE-A terminal, the proposal of some producers (as Nortel (R1-090762), LG (R1-090779)) needs the cooperation of backward compatibility composition carrier wave to work together when relating to requirement connected state LTE-A terminal works.This mode has limited the degree of freedom of LTE-A terminal works, and the connected state LTE-A terminal that non-backward compatible is formed on the carrier wave must be worked with other backward compatibility composition carrier wave cooperation, is subjected to the restriction that other backward compatibility is formed carrier wave.
Qualcomm mentions resident carrier wave of non-backward compatible and non-backward compatible non-resident carrier notion in relevant criterion (with reference to " Qualcomm Europe; R1-090860; Notion ofanchor carrier in LTE-A; WG1_RL1 meeting 56 "), the former supports the LTE-A terminal of Idle state and connected state, support synchronous/broadcasting/paging function, the latter only supports the LTE-A terminal of connected state, UE can not reside on such carrier wave, back-up system information updating function is furnished with new synchronizing signal to keep synchronous.For the resident carrier wave of non-backward compatible, when Idle state LTE-A terminal also can be resident, during the specific asymmetric carrier aggregation in sub-district in the initial access process descending composition carrier wave unstructured problem still need to solve, the modification influence of introducing thus has to be assessed; For the non-backward compatible non-resident carrier, the LTE-A terminal still needs the cooperation of backward compatibility composition carrier wave to work together when connected state, is subjected to the restriction that other backward compatibility is formed carrier wave.
Summary of the invention
The technical problem to be solved in the present invention provides the method for work and the system of enhanced long-term evolution terminal, improves the freedom to work degree of LTE-A terminal and saves the terminal electric power resource.
Also consider deficiency at the prior art scheme at freedom to work degree, terminal power saving and to the influence of protocol modification, the present invention promptly is under the scene that has non-backward compatible carrier waves, proposed a kind of new LTE-A terminal operating mode, the modification influence of having taken all factors into consideration the degree of freedom, terminal power saving and the agreement of terminal works has provided the LTE-A working method of a kind of connected state and Idle state.
In order to solve the problems of the technologies described above, the invention provides a kind of method of work of enhanced long-term evolution terminal, comprise: the enhanced long-term evolution terminal that is in connected state does not need to work alone on non-backward compatible carrier waves by means of the information support on the backward compatibility carrier wave.
Further, above-mentioned method of work can also have following characteristics:
Strengthen the base station at the system configuration parameter that provides described enhanced long-term evolution terminal on this non-backward compatible carrier waves, to work alone on the described non-backward compatible carrier waves.
Further, above-mentioned method of work can also have following characteristics:
Described non-backward compatible carrier waves is meant the descending composition carrier wave of non-backward compatible.
Further, above-mentioned method of work can also have following characteristics:
The enhanced long-term evolution terminal that is in Idle state only resides on the descending composition carrier wave of backward compatibility.
Further, above-mentioned method of work can also have following characteristics:
Described enhanced long-term evolution terminal is after carrying out initial synchronization operation with described enhancing base station on the descending composition carrier wave of described backward compatibility, send random access guiding message on the up composition carrier wave corresponding with the descending composition carrier wave of described backward compatibility, described enhancing base station sends accidental access response after receiving described random access guiding message on the descending composition carrier wave of described backward compatibility.
Further, above-mentioned method of work can also have following characteristics:
Set up in the Radio Resource control connection process between described enhanced long-term evolution terminal and the described enhancing base station, described enhancing base station sends the Radio Resource control connection and sets up message on the descending composition carrier wave of described backward compatibility.
Further, above-mentioned method of work can also have following characteristics:
Described enhanced long-term evolution terminal resides on the backward compatibility carrier wave after transferring Idle state to from connected state.
In order to solve the problems of the technologies described above, the present invention also provides a kind of work system of enhanced long-term evolution terminal, comprise the enhanced long-term evolution terminal and strengthen the base station, described enhanced long-term evolution terminal, be used for when being in connected state, do not need to work alone on non-backward compatible carrier waves by means of the information support of backward compatibility carrier wave; Described enhancing base station is at the system configuration parameter that provides described enhanced long-term evolution terminal to work alone on this non-backward compatible carrier waves on the described non-backward compatible carrier waves.
Further, said system can also have following characteristics:
Described enhanced long-term evolution terminal also is used for when being in Idle state, only resides on the descending composition carrier wave of backward compatibility.
Further, said system can also have following characteristics:
Described enhancing base station, also be used on the descending composition carrier wave of described backward compatibility, carrying out initial synchronization operation with described enhanced long-term evolution terminal, after receiving random access guiding message on the up composition carrier wave corresponding, on the descending composition carrier wave of described backward compatibility, send accidental access response with the descending composition carrier wave of described backward compatibility; And and set up between the described enhanced long-term evolution terminal in the Radio Resource control connection process, on the descending composition carrier wave of described backward compatibility, send the Radio Resource control connection and set up message.
Method of the present invention is simply effective, the LTE-A terminal can work alone when non-backward compatible is formed the carrier wave transmitting data on such composition carrier wave, need not monitor other and form carrier wave, can be the LTE-A terminal working mechanism flexibly is provided, also help simultaneously the power saving of LTE-A terminal, the LTE-A terminal only resides in the working method of backward compatibility carrier wave at Idle state, has solved the indefinite problem of descending composition carrier wave in the random access procedure simply and effectively.And method of the present invention is less to effect on protocol modification.
Description of drawings
Fig. 1 is the schematic diagram of LTE-A terminal works method among the embodiment;
Fig. 2 is the schematic diagram of up composition carrier wave and descending composition carrier wave in the specific embodiment.
Embodiment
Method of the present invention is applicable to the LTE-A system that exists non-backward compatible to form carrier wave.For example, when the LTE-A system descending is formed carrier number greater than up composition carrier number, because different band configurations transmitting-receiving frequencies has different fixed intervals (normative reference TS 36.101 840) among the LTE, when system descending is formed carrier number greater than up composition carrier number, also just exist non-backward compatible to form the situation of carrier wave.
Non-backward compatible carrier waves refers among the embodiment, does not support the carrier wave of LTE terminal in the LTE-A system.The connected state of LTE-A terminal is meant that the LTE-A terminal set up the RRC connection; The Idle state of LTE-A terminal is meant that the LTE-A terminal do not set up RRC and connect.
The work system of LTE-A terminal comprises LTE-A terminal and enhancing base station,
The LTE-A terminal is used for when being in connected state, does not need to work alone on non-backward compatible carrier waves by means of the information support of backward compatibility carrier wave; Also be used for when being in Idle state, only reside on the descending composition carrier wave of backward compatibility;
Strengthen the base station, at the system configuration parameter that provides described LTE-A terminal on this non-backward compatible carrier waves, to work alone on the described non-backward compatible carrier waves; Also be used on the descending composition carrier wave of backward compatibility, carrying out the Idle state park operation with the LTE-A terminal, after receiving random access guiding message on the up composition carrier wave corresponding, after this on the descending composition carrier wave of compatibility, sending accidental access response with the descending composition carrier wave of backward compatibility; And and set up between the LTE-A terminal in the RRC connection procedure, set up message after this on the descending composition carrier wave of compatibility, sending the Radio Resource control connection.
As shown in Figure 1, the method for work of enhanced long-term evolution terminal comprises:
(1) be in connected state LTE-A terminal and be operated in independently on the non-backward compatible carrier waves, need be by means of the information support of backward compatibility carrier wave.
Strengthen the base station can work alone relevant configuration information on this non-backward compatible carrier waves of connected state LTE-A terminal is being provided on this non-backward compatible carrier waves, as synchronously/system information/paging etc., make connected state LTE-A terminal can be operated in independently on the non-backward compatible carrier waves (be connected state LTE-A terminal can not need by the cooperation and the information support of other backward compatibility carrier wave, just can on this non-backward compatible carrier waves, work).
Among the embodiment, the non-backward compatible carrier waves that connected state LTE-A terminal works alone is meant one or more descending non-backward compatible carrier waves.
Be in connected state LTE-A terminal and be operated in independently on the non-backward compatible carrier waves, need then need not monitor other and form carrier wave, help the terminal power saving by means of the information support of backward compatibility carrier wave.
(2) the LTE-A terminal that is in Idle state only resides on the backward compatibility carrier wave;
" resident " that be in the LTE-A terminal of Idle state in of the present invention relates to all operations of LTE-A terminal at Idle state, for example receives broadcast, beep-page message or the like.
And the LTE-A terminal is resident on the backward compatibility carrier wave when cell selecting or sub-district gravity treatment, and does not carry out resident on non-backward compatible carrier waves; The LTE-A terminal is resident to the backward compatibility carrier wave when connected state forwards Idle state to.
After the LTE-A terminal that system configuration or agreement agreement is in Idle state only resides on the backward compatibility carrier wave, the LTE-A terminal is in random access procedure, its up composition carrier wave that can insert descending composition carrier wave corresponding to a backward compatibility, strengthen the base station and receive that at a certain up-link carrier the RACH of LTE-A terminal transmission is leading, just can know the descending composition carrier wave that terminal initial is resident, on the descending composition carrier wave of compatibility, send the leading response of RACH after this so strengthen the base station, and in follow-up Radio Resource control connection process, strengthen the base station and also set up message (message 4) after this on the descending composition carrier wave of compatibility, sending the Radio Resource control connection.Like this, to initial access descending carrier unstructured problem, strengthening the base station does not need to send accidental access response on all descending composition carrier waves corresponding with up composition carrier wave, saves the system descending resource; And, do not need special selection strategy to select a descending composition carrier wave to be used to send accidental access response from a plurality of descending composition carrier waves, simplify the operation that strengthens the base station.
Further specify the inventive method with specific embodiment below.
As shown in Figure 2, in this embodiment LTE-A sub-district by 5 descending carrier waves of forming, 3 up composition carrier waves, as shown in Figure 2, wherein backward compatibility is formed carrier wave to being descending composition carrier wave 2 and up composition carrier wave 1, descending composition carrier wave 3 and up composition carrier wave 2, descending composition carrier wave 5 and up composition carrier wave 3 respectively.Non-backward compatible is formed carrier wave to being descending composition carrier wave 1 and descending composition carrier wave 1, descending composition carrier wave 4 and up composition carrier wave 2 respectively.Wherein, configurating downlink is formed the center carrier frequencies of carrier wave 1 and descending composition carrier wave 4 not on 100KHz, the base station issues the connected state terminal and works alone and form essential configuration on the carrier wave at such with forming carrier wave 4 at descending composition carrier wave 1, as synchronously/system information/paging etc.
To the LTE-A terminal, Cell searching is searched for by the frequency of 100KHz integral multiple, if initial downlink is synchronized on the descending composition carrier wave 2, and then reception broadcasting, know that by broadcast it matches up composition carrier wave 1, the LTE-A terminal sends the RACH targeting sequencing at up composition carrier wave 1, after eNodeB receives the RACH targeting sequencing, know that the resident descending composition carrier wave of LTE-A is descending composition carrier wave 2, and in descending composition carrier wave 2 transmission RACH responses, the LTE-A terminal receives that RACH response back sends message 3 at up composition carrier wave 1, eNodeB and then send message 4 at descending composition carrier wave 2.
The LTE-A terminal of the connected state in office one descending composition carrier wave that can work alone.
When the LTE-A terminal when connected state forwards Idle state to, eNodeB is configured to descending backward compatibility carrier wave with it, as forming on the carrier wave 2, this terminal and then reside in descending composition carrier wave 2.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, the method for work of enhanced long-term evolution terminal comprises:
The enhanced long-term evolution terminal that is in connected state does not need to work alone on non-backward compatible carrier waves by means of the information support on the backward compatibility carrier wave.
2, the method for claim 1 is characterized in that,
Strengthen the base station at the system configuration parameter that provides described enhanced long-term evolution terminal on this non-backward compatible carrier waves, to work alone on the described non-backward compatible carrier waves.
3, method as claimed in claim 2 is characterized in that,
Described non-backward compatible carrier waves is meant the descending composition carrier wave of non-backward compatible.
4, as claim 1,2 or 3 described methods, it is characterized in that,
The enhanced long-term evolution terminal that is in Idle state only resides on the descending composition carrier wave of backward compatibility.
5, method as claimed in claim 4 is characterized in that,
Described enhanced long-term evolution terminal is after carrying out initial synchronization operation with described enhancing base station on the descending composition carrier wave of described backward compatibility, send random access guiding message on the up composition carrier wave corresponding with the descending composition carrier wave of described backward compatibility, described enhancing base station sends accidental access response after receiving described random access guiding message on the descending composition carrier wave of described backward compatibility.
6, method as claimed in claim 4 is characterized in that,
Set up in the Radio Resource control connection process between described enhanced long-term evolution terminal and the described enhancing base station, described enhancing base station sends the Radio Resource control connection and sets up message on the descending composition carrier wave of described backward compatibility.
7, method as claimed in claim 4 is characterized in that,
Described enhanced long-term evolution terminal resides on the backward compatibility carrier wave after transferring Idle state to from connected state.
8, the work system of enhanced long-term evolution terminal comprises the enhanced long-term evolution terminal and strengthens the base station, it is characterized in that,
Described enhanced long-term evolution terminal is used for when being in connected state, does not need to work alone on non-backward compatible carrier waves by means of the information support of backward compatibility carrier wave;
Described enhancing base station is at the system configuration parameter that provides described enhanced long-term evolution terminal to work alone on this non-backward compatible carrier waves on the described non-backward compatible carrier waves.
9, system as claimed in claim 8 is characterized in that,
Described enhanced long-term evolution terminal also is used for when being in Idle state, only resides on the descending composition carrier wave of backward compatibility.
10, system as claimed in claim 9 is characterized in that,
Described enhancing base station, also be used on the descending composition carrier wave of described backward compatibility, carrying out initial synchronization operation with described enhanced long-term evolution terminal, after receiving random access guiding message on the up composition carrier wave corresponding, on the descending composition carrier wave of described backward compatibility, send accidental access response with the descending composition carrier wave of described backward compatibility; And and set up between the described enhanced long-term evolution terminal in the Radio Resource control connection process, on the descending composition carrier wave of described backward compatibility, send the Radio Resource control connection and set up message.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011110040A1 (en) * | 2010-03-10 | 2011-09-15 | 中兴通讯股份有限公司 | Processing method for idle mode |
| CN102196532A (en) * | 2010-03-05 | 2011-09-21 | 中兴通讯股份有限公司 | Network access method and system |
| CN102598838A (en) * | 2009-11-02 | 2012-07-18 | 瑞典爱立信有限公司 | Methods and arrangements for providing proper system information at carrier aggregation in a wireless communication system |
| CN105592521A (en) * | 2010-01-12 | 2016-05-18 | 富士通株式会社 | Wireless communication device, wireless terminal device, and wireless communication method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101039208B (en) * | 2006-03-13 | 2011-04-06 | 大唐移动通信设备有限公司 | Method for updating working state of user terminal |
| CN101047949B (en) * | 2006-03-27 | 2010-05-12 | 华为技术有限公司 | Bear control method of service data flow |
| CN101404539A (en) * | 2008-11-18 | 2009-04-08 | 中兴通讯股份有限公司 | Data transmission method for mixed time division duplex large band width system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102598838A (en) * | 2009-11-02 | 2012-07-18 | 瑞典爱立信有限公司 | Methods and arrangements for providing proper system information at carrier aggregation in a wireless communication system |
| US8812006B2 (en) | 2009-11-02 | 2014-08-19 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and arrangements in a wireless communication system |
| CN102598838B (en) * | 2009-11-02 | 2016-06-08 | 瑞典爱立信有限公司 | For the method and apparatus providing suitable system information in a wireless communication system when carrier aggregation |
| CN105592521A (en) * | 2010-01-12 | 2016-05-18 | 富士通株式会社 | Wireless communication device, wireless terminal device, and wireless communication method |
| CN102196532A (en) * | 2010-03-05 | 2011-09-21 | 中兴通讯股份有限公司 | Network access method and system |
| WO2011110040A1 (en) * | 2010-03-10 | 2011-09-15 | 中兴通讯股份有限公司 | Processing method for idle mode |
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| CN101541036B (en) | 2015-05-20 |
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