CN103037441B - A kind of method and system determining uplink carrier resource - Google Patents
A kind of method and system determining uplink carrier resource Download PDFInfo
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Abstract
The invention discloses a kind of method determining uplink carrier resource, comprise the steps: that source base station sends handover request to target BS；The target BS ability according to subscriber equipment, in the uplink member carrier that subscriber equipment can be supported, specifies a uplink member carrier for this subscriber equipment；Target BS sends to source base station and comprises special random access preamble sequence and the switching request acknowledgement message of specified uplink member carrier information；Source base station sends the switching command carrying described special random access preamble sequence and uplink member carrier information to subscriber equipment；Subscriber equipment determines uplink member carrier according to the uplink member carrier information carried in switching command, and sends special random access preamble sequence to target BS in determined uplink member carrier.The invention also discloses the method for other determination uplink carrier resource and system.The present invention may be used for multi-carrier aggregation system, fills up the blank of prior art.
Description
The application is application number 200910083714.2, May 7 2009 applying date, denomination of invention is the divisional application of parent application of " a kind of methods, devices and systems determining uplink carrier resource ".
Technical field
The present invention relates to mobile communication technology field, particularly to a kind of method and system determining uplink carrier resource.
Background technology
At 3GPP Long Term Evolution LTE-Advanced, (LTE is the abbreviation of LongTermEvolution, it it is the evolution system of 3-G (Generation Three mobile communication system), LTE-Advanced system is the upgrading of LTE system, it is abbreviated as LTE-A) in system, peak rate improves a lot than LTE, requirement reaches downlink peak rates and reaches 1Gbps, and upstream peak speed reaches 500Mbps.Meanwhile, lte-a system requires there is good compatibility with LTE system.Based on improving peak rate and LTE system compatibility and making full use of the needs of frequency spectrum resource, lte-a system introduces carrier aggregation (CarrierAggregation, CA) technology.
Carrier aggregation technology refers to and comprises multiple member carrier respectively at an intra-cell uplink link and downlink, rather than the pattern of only a set of carrier wave in LTE and wireless communication system earlier.In the system of carrier aggregation, each member carrier can be continuously or discontinuously, and in order to compatible with LTE system, the maximum bandwidth of each member carrier is 20MHz, and the bandwidth between each member carrier can be identical or different.
In LTE system, the situation of subscriber equipment (UE) Stochastic accessing mainly has several as follows:
1, accessing from idle condition (RRC_IDLE), this situation belongs to and is initially accessed (InitialAccess)；
2, Radio Link Failure initiates Stochastic accessing, and this situation falls within and is initially accessed；
3, UE handoff procedure between different base station needs Stochastic accessing；
4, UE has downlink data to arrive when being in connection status (RRC_CONNECTED)；
5, UE has upstream data to arrive when being in connection status.
For there being downlink data to arrive or UE switching both of these case between different base station, UE can use non-competing Random Access, and the process of non-competing Stochastic accessing is illustrated in fig. 1 shown below, and comprises the steps:
Step 101: base station is the UE distribution special random access preamble sequence (RandomAccessPreamble for non-competing Stochastic accessing, hereinafter referred to as Preamble) and Physical Random Access Channel (PhysicalRandomAccessChannel corresponding to described Preamble, PRACH) running time-frequency resource position, and described Preamble and PRACH running time-frequency resource position is sent to UE by Stochastic accessing assignment signaling.
Downlink data being arrived to the non-competing Stochastic accessing caused, base station uses Physical Downlink Control Channel (PhysicalDownlinkControlChannel, PDCCH) to send described Preamble and PRACH running time-frequency resource position；For the non-competing Stochastic accessing that switching causes, described Preamble and PRACH running time-frequency resource position is carried by switching command (handovercommand) in base station.
Step 102:UE sends special Preamble on the PRACH running time-frequency resource specified by base station to base station.
Step 103: base station sends accidental access response (RandomAccessResponse) to UE.
After introducing carrier aggregation technology, support multiple member carrier due to up simultaneously, it is thus desirable to determine in the process of non-competing Stochastic accessing shown in Fig. 1, to base station, UE sends special Preamble sends in which uplink member carrier, this does not have in current technical standard relevant regulations.
Summary of the invention
In view of this, it is an object of the invention to, it is proposed to determine the method and system of uplink carrier resource, it is possible in multi-carrier aggregation system, determine that subscriber equipment sends the uplink member carrier used by special Preamble to base station.
The embodiment of the present invention proposes a kind of method determining uplink carrier resource, comprises the steps:
Subscriber equipment is from source base station to target BS handoff procedure, and source base station sends handover request to target BS；
The target BS ability according to subscriber equipment, in the uplink member carrier that subscriber equipment can be supported, specifies more than one uplink member carrier for this subscriber equipment；
Target BS sends switching request acknowledgement message to source base station, comprises special random access preamble sequence and specified uplink member carrier information in described switching request acknowledgement message；
Source base station sends the switching command carrying described special random access preamble sequence and uplink member carrier information to subscriber equipment；
Subscriber equipment receives switching command, determines uplink member carrier according to the uplink member carrier information carried in switching command, and sends special random access preamble sequence to target BS in determined uplink member carrier.
The embodiment of the present invention proposes another method determining uplink carrier resource, comprises the steps:
Base station, according to the Stochastic accessing information on load on UE capability and each uplink member carrier, specifies this subscriber equipment to send the operable uplink member carrier of special random access preamble sequence under the principle of load balancing；
Base station sends to subscriber equipment and carries special random access preamble sequence and the Physical Downlink Control Channel signaling of specified uplink member carrier information；
Subscriber equipment receives Physical Downlink Control Channel signaling, carries instructions field according to the up member of described Physical Downlink Control Channel signaling and determines uplink member carrier, sends special random access preamble sequence in determined uplink member carrier.
The embodiment of the present invention proposes a kind of system determining uplink carrier resource, and including subscriber equipment, source base station and target BS, subscriber equipment switches from source base station to target BS,
Described source base station is for sending handover request to target BS；And receive the switching request acknowledgement message from target BS, described switching request acknowledgement message comprises special random access preamble sequence and specified uplink member carrier information, and sends the switching command carrying described special random access preamble sequence and uplink member carrier information to subscriber equipment；
Described target BS is for receiving after the handover request of source base station, ability according to subscriber equipment, in the uplink member carrier that subscriber equipment can be supported, more than one uplink member carrier is specified for this subscriber equipment, and send switching request acknowledgement message to source base station, described switching request acknowledgement message comprises special random access preamble sequence and specified uplink member carrier information；
Described subscriber equipment is used for receiving switching command, determines uplink member carrier according to the uplink member carrier information carried in switching command, and sends special random access preamble sequence to target BS in determined uplink member carrier.
The embodiment of the present invention proposes another kind and determines the system of uplink carrier resource, including base station and subscriber equipment,
Described base station is according to the Stochastic accessing information on load on UE capability and each uplink member carrier, specify this subscriber equipment to send the operable uplink member carrier of special random access preamble sequence under the principle of load balancing, and carry special random access preamble sequence and the Physical Downlink Control Channel signaling of specified uplink member carrier information to subscriber equipment transmission；
Described subscriber equipment is used for receiving Physical Downlink Control Channel signaling, carries instructions field according to the up member of described Physical Downlink Control Channel signaling and determines uplink member carrier, sends special random access preamble sequence in determined uplink member carrier.
As can be seen from the above technical solutions, the present invention program can utilize the binding relationship between UL/DL member carrier to determine and send the special Preamble uplink member carrier used, or use UE special (UE-specific) up main carrier or cell-specific (cell-specific) up main carrier as sending the special Preamble uplink member carrier used, or determine that the mode of uplink member carrier notifying user equipment determines the subscriber equipment special Preamble of the up transmission uplink member carrier used by base station, fill up the blank of prior art.
Accompanying drawing explanation
Fig. 1 is non-competing random access procedure figure of the prior art；
Fig. 2 is the non-competing random access procedure figure of the embodiment of the present invention 1；
Fig. 3 is the non-competing random access procedure figure of the embodiment of the present invention 2；
Fig. 4 is the non-competing random access procedure figure of the embodiment of the present invention 3；
Fig. 5 is the non-competing random access procedure figure of the embodiment of the present invention 4.
Detailed description of the invention
For have employed the multicarrier system of carrier aggregation technology, up support multiple member carrier simultaneously.The present invention is directed to this situation and give a kind of method determining uplink carrier resource, determine in non-competing random access procedure, UE sends the special Preamble uplink member carrier used to base station.Uplink member carrier determines that mode can including but not limited to several as follows:
(1) if up-downgoing member carrier has up-link (Uplink, UL)/downlink (Downlink, DL) binding relationship, it is possible to use the binding relationship between UL/DL member carrier determines the special Preamble of the transmission uplink member carrier used；
(2), use UE special (UE-specific) up main carrier or cell-specific (cell-specific) up main carrier as sending the special Preamble uplink member carrier used；
(3), base station according to UE ability, can be randomly assigned the UE uplink member carrier that can support, and signal UE by wireless heterogeneous networks (RRC) message or PDCCH；
(4), base station can according to the Stochastic accessing load of UE ability and each uplink member carrier, it is intended that available uplink member carrier set, and signals UE by RRC information or PDCCH.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with embodiment, the present invention is further elaborated.
For non-competing Stochastic accessing, have been set up wireless heterogeneous networks (RRC) between UE and base station and connect, so the UE that can also be based on that the configuration between UL/DL member carrier can be based on the unified configuration in community individually configures.If adopting the unified configuration in community, then base station needs by broadcast, cell-level UL/DL member carrier corresponding relation to be notified UE before non-competing Stochastic accessing；If the corresponding relation between UL/DL member carrier is based on UE, then base station needs signaled the corresponding relation between the UL/DL member carrier of this UE of UE before non-competing Stochastic accessing by UE special RRC.The non-competing random access procedure of the embodiment of the present invention 1 is as in figure 2 it is shown, comprise the steps:
Step 201: base station is the UE distribution special Preamble for non-competing Stochastic accessing, and determine the downlink member carrier for sending described Preamble to UE, and described Preamble and PRACH running time-frequency resource position is sent to UE by determined downlink member carrier.
Step 202:UE receives described Preamble, by the downlink member carrier receiving described Preamble, according to the binding relationship between the UL/DL member carrier being pre-configured with, it is determined that corresponding uplink member carrier.
Step 203:UE sends special Preamble in determined uplink member carrier to base station.
Step 204: base station is according to the binding relationship between the aforementioned downlink member carrier determined and the UL/DL member carrier that is pre-configured with, obtain UE and send the uplink member carrier used by special Preamble, described uplink member carrier receives special Preamble, and sends accidental access response to UE.
When there being downlink data to arrive, UE receives the up Preamble of transmission of Preamble and UE and uses the resource of same community, therefore can utilize the binding relationship between UL/DL member carrier.But UE being switched between different base station to the non-competing Stochastic accessing caused, UE receives the resource of the up Preamble of transmission of Preamble and the UE not Shi Yige community used, and the method for embodiment 1 is just no longer applicable for this situation.
The non-competing random access procedure of embodiment 2 is as it is shown on figure 3, comprise the steps:
Step 301: base station is the UE distribution special Preamble for non-competing Stochastic accessing, and sends described special Preamble on certain downlink member carrier；
Step 302:UE sends described special Preamble on cell-specific (cell-specific) main carrier or user equipment specific (UE-specific) main carrier to base station；
Step 303: base station receives described special Preamble on cell-specific main carrier or user equipment specific main carrier, and sends accidental access response to UE.
The present embodiment method uses cell-specific main carrier or user equipment specific main carrier to send special Preamble, is effectively equivalent to base station and subscriber equipment both sides arrange to use certain specified upstream carrier wave.In practical application, it is also possible to arrange other specified upstream carrier wave, for instance, about it is decided to be in the neighboring upstream carrier wave of cell-specific main carrier.The non-competing Stochastic accessing that the present embodiment scheme switches between different base station for UE and downlink data arrival causes is all applicable.
Embodiment 3 is that subscriber equipment switches the non-competing random access procedure caused between base station, and its flow chart as shown in Figure 4, comprises the steps:
Step 401: subscriber equipment is from source base station to target BS handoff procedure, and source base station sends handover request to target BS.
Step 402: target BS is according to UE ability, in the UE uplink member carrier that can support, specifies a uplink member carrier for this UE；The mode of described appointment uplink member carrier can be randomly assigned, or specifies according to certain strategy.Such as, the UE for this process specifies i-th uplink member carrier, specifies i+1 uplink member carrier for the UE processed next time.
nullStep 403: target BS sends switching request acknowledgement message (HANDOVERREQUESTACKNOWLEDGE) to source base station，In the transparent vessel (TargeteNBToSourceeNBTransparentContainer) that this message comprises，Except comprising the preamble special for non-competing Stochastic accessing、Also need to comprise a Stochastic accessing preamble outside PRACH information and send the uplink member carrier instructions field used，This instructions field can be numbering or the frequency point information of uplink member carrier，Represent with " cc_info "，Value size as " cc_info " territory is then taken at system uplink member carrier number，Owing to current standard not yet specifying，So representing with N here.
Step 404: described transparent vessel is carried and is sent to UE in switching command (HandoverCommand) by source base station.
Step 405:UE receives switching command, determines uplink member carrier according to the uplink member carrier instructions field that wherein transparent vessel carries, and sends special Preamble to target BS in determined uplink member carrier.
Embodiment 4 reaches the non-competing Stochastic accessing handling process caused for downlink data, as it is shown in figure 5, comprise the steps:
Step 501: base station, according to the Stochastic accessing information on load in UE ability and each uplink member carrier, specifies this UE to send the operable uplink member carrier of special Preamble under the principle of load balancing；Described load balancing principle can have different implementation, such as can select the minimum member carrier of Stochastic accessing load or the minimum carrier wave of current business transmission load.The specific implementation of load balancing is not made restriction by the present invention.
Step 502: base station sends PDCCH signaling to UE, described PDCCH signaling is carried the dedicated preamble of Stochastic accessing, in order to indicate the special Preamble of the up transmission of the UE uplink member carrier used, also need to PDCCHDCIformat1A form is modified, PDCCH order increases the special Preamble up member used and carries instructions field, this instructions field can be the frequency point information of uplink member carrier numbering or uplink member carrier, represent with " cc_info ", value size as " cc_info " territory then depends on system uplink member carrier number, owing to current standard not yet specifying, so representing with N here.
Step 503:UE receives PDCCH signaling, carries instructions field according to the up member of described PDCCH signaling and determines uplink member carrier, sends special Preamble in determined uplink member carrier.
Embodiment four proposes a kind of base station, including:
Distribution module, for distributing the special random access preamble sequence carrying out non-competing Stochastic accessing for subscriber equipment；
Sending module, for determining the downlink member carrier sending the special random access preamble sequence that described distribution module is distributed, is sent described special random access preamble sequence to subscriber equipment by determined downlink member carrier；
Corresponding relation module, for preserving the binding relationship between the downlink/uplink member carrier being pre-configured with, send the downlink member carrier that special random access preamble sequence uses and the binding relationship preserved according to described sending module, obtain the uplink member carrier of correspondence；
Receiver module, receives special random access preamble sequence in the uplink member carrier obtained in corresponding relation module.
Embodiment five proposes a kind of subscriber equipment, including:
First user receiver module, is used for receiving special random access preamble sequence；
User's corresponding relation module, for preserving the binding relationship between the downlink/uplink member carrier being pre-configured with, the downlink member carrier of described special random access preamble sequence is received, according to described binding relationship, it is determined that corresponding uplink member carrier by user's receiver module；
First user sending module, for sending special random access preamble sequence in the uplink member carrier that described user's corresponding relation module is determined to base station.
Embodiment six proposes another kind of subscriber equipment, including:
Second user's receiver module, is used for receiving special random access preamble sequence；
Second user's sending module, for sending the special random access preamble sequence that described second user's receiver module receives on cell-specific main carrier or user equipment specific main carrier to base station.
Embodiment seven proposes a kind of system determining uplink carrier resource, and including subscriber equipment, source base station and target BS, subscriber equipment switches from source base station to target BS,
Described source base station is for sending handover request to target BS；And receive the switching request acknowledgement message from target BS, described switching request acknowledgement message comprises special random access preamble sequence and specified uplink member carrier information, and sends the switching command carrying described special random access preamble sequence and uplink member carrier information to subscriber equipment；
Described target BS is for receiving after the handover request of source base station, ability according to subscriber equipment, in the uplink member carrier that subscriber equipment can be supported, more than one uplink member carrier is specified for this subscriber equipment, and send switching request acknowledgement message to source base station, described switching request acknowledgement message comprises special random access preamble sequence and specified uplink member carrier information；
Described subscriber equipment is used for receiving switching command, determines uplink member carrier according to the uplink member carrier information carried in switching command, and sends special random access preamble sequence to target BS in determined uplink member carrier.
Embodiment eight proposes another kind and determines the system of uplink carrier resource, including base station and subscriber equipment,
Described base station is according to the Stochastic accessing information on load on UE capability and each uplink member carrier, specify this subscriber equipment to send the operable uplink member carrier of special random access preamble sequence under the principle of load balancing, and carry special random access preamble sequence and the Physical Downlink Control Channel signaling of specified uplink member carrier information to subscriber equipment transmission；
Described subscriber equipment is used for receiving Physical Downlink Control Channel signaling, carries instructions field according to the up member of described Physical Downlink Control Channel signaling and determines uplink member carrier, sends special random access preamble sequence in determined uplink member carrier.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (3)
1. the method determining uplink carrier resource, it is characterised in that comprise the steps:
Subscriber equipment is from source base station to target BS handoff procedure, and source base station sends handover request to target BS；
The target BS ability according to subscriber equipment, in the uplink member carrier that subscriber equipment can be supported, specifies a uplink member carrier for this subscriber equipment；
Target BS sends switching request acknowledgement message to source base station, comprises special random access preamble sequence and specified uplink member carrier information in described switching request acknowledgement message；
Source base station sends the switching command carrying described special random access preamble sequence and uplink member carrier information to subscriber equipment；
Subscriber equipment receives switching command, determines uplink member carrier according to the uplink member carrier information carried in switching command, and sends special random access preamble sequence to target BS in determined uplink member carrier.
2. method according to claim 1, it is characterised in that described uplink member carrier information is numbering or the frequency point information of specified uplink member carrier.
3. determining a system for uplink carrier resource, including subscriber equipment, source base station and target BS, subscriber equipment switches from source base station to target BS, it is characterised in that
Described source base station is for sending handover request to target BS；And receive the switching request acknowledgement message from target BS, described switching request acknowledgement message comprises special random access preamble sequence and specified uplink member carrier information, and sends the switching command carrying described special random access preamble sequence and uplink member carrier information to subscriber equipment；
Described target BS is for receiving after the handover request of source base station, ability according to subscriber equipment, in the uplink member carrier that subscriber equipment can be supported, a uplink member carrier is specified for this subscriber equipment, and send switching request acknowledgement message to source base station, described switching request acknowledgement message comprises special random access preamble sequence and specified uplink member carrier information；
Described subscriber equipment is used for receiving switching command, determines uplink member carrier according to the uplink member carrier information carried in switching command, and sends special random access preamble sequence to target BS in determined uplink member carrier.
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| CN201310002431.7A CN103037441B (en) | 2009-05-07 | 2009-05-07 | A kind of method and system determining uplink carrier resource |
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| CN201310002431.7A CN103037441B (en) | 2009-05-07 | 2009-05-07 | A kind of method and system determining uplink carrier resource |
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| CN2009100837142A Division CN101883398A (en) | 2009-05-07 | 2009-05-07 | Method, device and system for determining uplink carrier resource |
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| WO2015061948A1 (en) * | 2013-10-28 | 2015-05-07 | 华为技术有限公司 | Random access method, random access configuration method, device and system |
| US11516779B2 (en) * | 2016-05-13 | 2022-11-29 | Huawei Technologies Co., Ltd. | Uplink information sending method and apparatus, base station, and user equipment |
| CN110381602B (en) | 2016-11-04 | 2021-10-15 | 华为技术有限公司 | Communication method, network device, communication system, and computer-readable storage medium |
| CN108738087B (en) * | 2017-04-24 | 2022-01-25 | 中兴通讯股份有限公司 | Switching method, base station and terminal |
| CN109151836A (en) * | 2017-06-19 | 2019-01-04 | 中国移动通信有限公司研究院 | A kind of cut-in method, the network equipment and mobile communication terminal |
| CN109121207B (en) * | 2017-06-22 | 2024-04-26 | 华为技术有限公司 | Communication method and device |
| CN107820719B (en) * | 2017-07-14 | 2020-11-03 | 深圳前海达闼云端智能科技有限公司 | Terminal switching method, device, base station and storage medium |
| CN117715231A (en) * | 2017-10-30 | 2024-03-15 | 北京小米移动软件有限公司 | Random access method and device |
| CN109803332B (en) | 2017-11-16 | 2021-02-05 | 华为技术有限公司 | Communication method, communication device and system |
| CN113556824B (en) * | 2017-11-17 | 2024-04-16 | 华为技术有限公司 | Random access method and device |
| CN109842953A (en) * | 2017-11-24 | 2019-06-04 | 中兴通讯股份有限公司 | Accidental access method and user equipment |
| US11310696B2 (en) | 2017-12-08 | 2022-04-19 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for transmitting information by selecting target uplink carrier, terminal device, and network device |
| CN110351033B (en) * | 2018-04-03 | 2022-01-07 | 成都鼎桥通信技术有限公司 | LTE (Long term evolution) main carrier selection method and device based on carrier aggregation |
| CN113170433A (en) * | 2018-11-30 | 2021-07-23 | 上海诺基亚贝尔股份有限公司 | Transmission scheduling in dual connectivity |
| CN113826438B (en) * | 2019-04-26 | 2024-07-05 | 上海诺基亚贝尔股份有限公司 | Random access procedure |
| CN112118634B (en) * | 2019-06-20 | 2023-03-28 | 中国电信股份有限公司 | Communication method, device, system, base station and terminal |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210609 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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