CN101784122B - Method for processing physical random access channel configuration information - Google Patents
Method for processing physical random access channel configuration information Download PDFInfo
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- CN101784122B CN101784122B CN200910005404.9A CN200910005404A CN101784122B CN 101784122 B CN101784122 B CN 101784122B CN 200910005404 A CN200910005404 A CN 200910005404A CN 101784122 B CN101784122 B CN 101784122B
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Abstract
The invention provides a method for processing physical random access channel configuration information, which is applied to a communication system comprising a first evolution base station having a first cell and a second evolution base station having one or more identical-frequency cells adjacent to the first cell. The method comprises that: the first evolution base station receives a measurement reporting message from user equipment residing in the first cell, wherein the measurement reporting message carries PRACH configuration information of one or more identical-frequency adjacent cells; and the first evolution base station acquires the PRACH configuration information of the identical-frequency adjacent cells from the measurement reporting message. The method has the advantage of eliminating interference produced by random access.
Description
Technical field
The present invention relates to the communications field, in particular to the processing method of Physical Random Access Channel (Physical Random Access Channel, referred to as PRACH) configuration information.
Background technology
Long Term Evolution (Long Term Evolution, referred to as LTE) network comprises: evolution Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio AccessNetwork, referred to as E-UTRAN) base station, evolution base station (Evolved NodeB, referred to as eNB), evolution packet switching center, evolution block core (Evolved PacketCore, referred to as EPC).
In LTE system, there is a set of PRACH configuration parameter each community while setting up, the configuration of PRACH mainly comprises: PRACH configuration index, logic root sequence index u and circulation skew Ncs for generation of random Access Preamble sequence (Preamble), the high-speed mobile attribute of community, the frequency domain position skew (Prach-Frequency Offset) of PRACH.Above-mentioned configuration is notified to subscriber equipment (User Equipment, referred to as UE) by system broadcast information, and wherein, PRACH configuration index represents form and the PRACH channel configuration of Preamble; 64 Preamble sequences that the high speed attribute of logic root sequence index u, circulation skew Ncs and community is used for generation of this community; The frequency domain position skew of PRACH is for determining the extreme lower position skew of PRACH channel on frequency domain.
In LTE system, if UE need to be mutual with network side, first UE need to obtain uplink synchronous, now, just needs initiating random access procedure.The process that UE and network side carry out uplink synchronous mainly comprises following operation:
Step 1: UE sends according to Preamble form the random Access Preamble sequence of choosing on the PRACH channel of choosing.
Step 2: network side, after receiving the random Access Preamble sequence of UE, sends accidental access response to UE.
After this, UE, after the response that receives article one Preamble coupling, thinks with after network side has been obtained and synchronize, no longer receives other accidental access response, until send Preamble next time, follow-up UE according to accidental access response and network side continuation alternately.
Above-mentioned random access procedure can be divided into random access and the two kinds of forms based on non-competing random access based on competition.For the random access based on competition, in the PRACH configuration that all ShiUEZhe community allows of the random Access Preamble sequence of the PRACH channel in step 1 and transmission, select at random; And for the random access based on non-competing, the PRACH channel in step 1 and the Preamble sequence of transmission are all select in the PRACH of network side Zhe community permission configures and pass through UE dedicated signaling and notify UE.
In above-mentioned random access procedure, can run into interference problem under certain conditions, Fig. 1 is the schematic diagram disturbing according to the random access of correlation technique, as shown in Figure 1, community A (belonging to eNB1) and community B (belonging to eNB2) are the homogeneous-frequency adjacent-domain of LTE, and adopt identical PRACH configuration, when normally residing in the random access of UE initiation of community A, the Preamble that UE sends likely receives Hui Beiliangge community simultaneously, now, network side is due to the community that cannot determine under UE, and therefore, community A and community B can reply accidental access response to UE.Can not affect although it is so UE for the reception of this community accidental access response, but, the random access of UE has increased the random access of community B and has processed load, disturbed the reception of random access code in the B of community, may cause the mistake that in the B of community, timing advance is estimated, also increased the probability of random access collision in the B of community, and because community B may can send ascending resource authorization signaling to UE in accidental access response, the Radio Resource that so also can have influence on community B is used, and therefore may waste the ascending wireless resource of community B.
In order to reduce manual maintenance workload and the optimized network ability of network, current at next generation mobile networks (Next Generation Mobile Network, referred to as NGMN) in the demand that proposes of tissue, LTE need to support self-organizing network (Self-OrganizedNetwork, referred to as SON) function, wherein, the self-configuration function and the self-optimization function that comprise network.The PRACH that can automatically revise community by self-configuration function and the self-optimization function of network configures.But the prerequisite of self-organizing network function is to need community A and community B to know mutually the other side's PRACH configuration.Therefore,, for two homogeneous-frequency adjacent-domains that do not belong to same eNB, the PRACH configuration information that how to obtain adjacent area is the problem that needs solve.
Summary of the invention
For in correlation technique for two homogeneous-frequency adjacent-domains that do not belong to same eNB, cannot obtain adjacent area PRACH configuration information problem and the present invention is proposed, for this reason, main purpose of the present invention is to provide the processing method of PRACH configuration information, one of to address the above problem at least.
To achieve these goals, according to an aspect of the present invention, provide a kind of processing method of PRACH configuration information.
According to the processing method of PRACH configuration information of the present invention, be applied to comprise the communication system of the second evolution base station of the one or more homogeneous-frequency adjacent-domains that there is the first evolution base station of the first community and there is the first community, said method comprises: the first evolution base station receives from the measurement reporting message that resides in the subscriber equipment of the first community, wherein, measure the PRACH configuration information that carries one or more homogeneous-frequency adjacent-domains in reporting message; The first evolution base station obtains the PRACH configuration information of homogeneous-frequency adjacent-domain from measure reporting message.
Preferably, before the first evolution base station receives the measurement reporting message from subscriber equipment, said method also comprises: subscriber equipment is carried out common frequency measurement, and sends measurement report to the first evolution base station, wherein, in measurement report, carry the Physical Cell Identifier of one or more homogeneous-frequency adjacent-domains; Subscriber equipment obtains PRACH configuration information from the broadcast message of the homogeneous-frequency adjacent-domain of the first evolution base station indication, and the PRACH configuration information of the homogeneous-frequency adjacent-domain obtaining is reported to the first evolution base station by measuring reporting message.
Preferably, before the first evolution base station receives the measurement reporting message from subscriber equipment, said method also comprises: subscriber equipment is carried out common frequency measurement according to the measurement indication of the first evolution base station, and measurement result is reported to the first evolution base station, wherein, in the measurement of the first evolution base station indication, carry homogeneous-frequency adjacent-domain sign to be measured; Subscriber equipment is the indication that reports based on measurement feedback according to the first evolution base station, from homogeneous-frequency adjacent-domain identifies the broadcast message of corresponding homogeneous-frequency adjacent-domain, obtain PRACH configuration information, and the PRACH configuration information of the homogeneous-frequency adjacent-domain obtaining is reported to the first evolution base station by measuring reporting message.
Preferably, after the first evolution base station obtains the PRACH configuration information of homogeneous-frequency adjacent-domain from measure reporting message, said method also comprises: the first evolution base station judges that whether the PRACH configuration information of homogeneous-frequency adjacent-domain is identical with a PRACH configuration information of the first community; If identical, the first evolution base station is that the first community arranges the PRACH configuration information different from the PRACH configuration information of all homogeneous-frequency adjacent-domains again.
Preferably, judge comprise whether identical with a PRACH configuration information of PRACH configuration information of homogeneous-frequency adjacent-domain: according to the logic root sequence index u in the PRACH configuration information of homogeneous-frequency adjacent-domain, circulation skew Ncs and community high-speed mobile attribute, determine the first set of the logic root sequence of homogeneous-frequency adjacent-domain; According to the logic root sequence index u in a PRACH configuration information, circulation skew Ncs and community high-speed mobile attribute, determine the second set of the logic root sequence of the first community; If the first set and the second set do not exist common factor, determine that the PRACH configuration information of homogeneous-frequency adjacent-domain is different from a PRACH configuration information; If existing, the first set and the second set occur simultaneously, according to the configuration index in the PRACH configuration information of homogeneous-frequency adjacent-domain and frequency domain position, be offset the 3rd set that definite homogeneous-frequency adjacent-domain sends the time-frequency domain position of random Access Preamble sequence use, according to the configuration index in a PRACH configuration information and frequency domain position skew, determine that the first community sends the 4th set of the time-frequency domain position of random Access Preamble sequence use; If there is not common factor in the 3rd set and the 4th set, the PRACH configuration information of determining homogeneous-frequency adjacent-domain is different from a PRACH configuration information, if the 3rd set and the 4th set exist, occur simultaneously, determine that the PRACH configuration information of homogeneous-frequency adjacent-domain is identical with a PRACH configuration information.
Preferably, PRACH configuration information comprises: configuration index, for generation of the logic root sequence index u of random Access Preamble sequence and circulation skew Ncs, community high-speed mobile attribute, frequency domain position skew.
To achieve these goals, according to an aspect of the present invention, also provide a kind of processing method of PRACH configuration information.
According to the processing method of PRACH configuration information of the present invention, be applied to comprise the communication system of the first evolution base station and second evolution base station of homogeneous-frequency adjacent-domain, said method comprises: the second evolution base station receives the PRACH configuration information from the first evolution base station, wherein, PRACH configuration information is the PRACH configuration information of the Serving cell in the first evolution base station.
Preferably, the first evolution base station sends PRACH configuration information by one of following message to the second evolution base station: X2 sets up request message, neighbor cell configuration information updating message.
Preferably, the first evolution base station is set up response message by X2 and is sent PRACH configuration information to the second evolution base station, before the second evolution base station receives the PRACH configuration information from the first evolution base station, said method also comprises: the second evolution base station sends X2 to the first evolution base station and sets up request message.
Preferably, the first evolution base station sends PRACH configuration information by evolution base station configuration update message to the second evolution base station, and wherein, PRACH configuration information is the PRACH configuration information of the community of config update in the first evolution base station.
Preferably, after the second evolution base station receives the PRACH configuration information from the first evolution base station, said method also comprises: the second evolution base station judges in the Serving cell of this base station whether have predetermined cell, wherein, the PRACH configuration information of predetermined cell is identical with the PRACH configuration information receiving; If existed, the second evolution base station is again for predetermined cell arranges the PRACH configuration information different from the PRACH configuration information receiving.
Preferably, the PRACH configuration information and identical the comprising of PRACH configuration information receiving of judgement predetermined cell: first the gathering of logic root sequence of determining predetermined cell according to the logic root sequence index u of the PRACH configuration information Zhong community of predetermined cell, circulation skew Ncs and community high-speed mobile attribute; According to the logic root sequence index u of the PRACH configuration information Zhong community receiving, circulation skew Ncs and community high-speed mobile attribute, determine the second set of the logic root sequence of this community; The first evolution base station judges that whether the first set and the second set exist common factor, if there is no, determine that the PRACH configuration information of predetermined cell is different from the PRACH configuration information receiving; If existed, according to the configuration index of the PRACH configuration information Zhong community of predetermined cell and frequency domain position, be offset the 3rd set that definite predetermined cell sends the time-frequency domain position of random Access Preamble sequence use, according to the configuration index of the PRACH configuration information Zhong community receiving and frequency domain position skew, determine that this community sends the 4th set of the time-frequency domain position of random Access Preamble sequence use; Judge whether the 3rd set and the 4th set exist common factor, if there is no, the PRACH configuration information of determining predetermined cell is different from the PRACH configuration information receiving, if existed, determines that the PRACH configuration information of predetermined cell is identical with the PRACH configuration information receiving.
Preferably, PRACH configuration information comprises: configuration index, for generation of the logic root sequence index u of random Access Preamble sequence and circulation skew Ncs, community high-speed mobile attribute, frequency domain position skew.
By the present invention, adopt eNB to receive the method from the PRACH configuration information of UE or other eNB, solved in correlation technique for two homogeneous-frequency adjacent-domains that do not belong to same eNB, cannot obtain the problem of the PRACH configuration information of adjacent area, and then eliminated the interference that random access produces.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram disturbing according to the random access of correlation technique;
Fig. 2 is according to the flow chart of the processing method of the PRACH configuration information of the embodiment of the present invention one;
Fig. 3 is the schematic diagram of the processing method of the PRACH configuration information of example 1 and example 2 according to the present invention;
Fig. 4 is the flow chart of the processing method of the PRACH configuration information of example 3 and example 4 according to the present invention;
Fig. 5 is the flow chart of processing method of the PRACH configuration information of the example 5 according to the present invention;
Fig. 6 is according to the flow chart of the processing method of the PRACH configuration information of the embodiment of the present invention 6;
Fig. 7 is the flow chart that judges the processing procedure whether PRACH configuration is identical according to the embodiment of the present invention.
Embodiment
Functional overview
Consider in correlation technique for two homogeneous-frequency adjacent-domains that do not belong to same eNB, cannot obtain the problem of the PRACH configuration information of adjacent area, the embodiment of the present invention provides the processing method of PRACH configuration information, adopt eNB to obtain PRACH configuration information by the measurement reporting message receiving from UE, the X2 that also can send by other eNB sets up request message, X2 sets up response message, configuration update message or neighbor cell configuration information updating message and obtains PRACH configuration information.Can solve the interference problem of above-mentioned random access like this.
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Embodiment of the method
Embodiment mono-
According to embodiments of the invention, a kind of processing method of PRACH configuration information is provided, be applied to comprise the communication system of the eNB2 of the one or more homogeneous-frequency adjacent-domains that there is the eNB1 of the first community and there is the first community.Fig. 2 is according to the flow chart of the processing method of the PRACH configuration information of the embodiment of the present invention one, and as shown in Figure 2, the method comprises that following step S202 is to step S204:
Step S202, eNB1 receives from the measurement reporting message that resides in the UE of the first community, wherein, measures the PRACH configuration information that carries one or more homogeneous-frequency adjacent-domains in reporting message.
Step S204, eNB1 obtains the PRACH configuration information of homogeneous-frequency adjacent-domain from measure reporting message.
Before step S202, the method can comprise one of operation:
(1) UE carries out common frequency measurement, and sends measurement report to eNB1, wherein, carries the Physical Cell Identifier (Physical CellID is called for short PCI) of one or more homogeneous-frequency adjacent-domains in measurement report; UE obtains the PRACH configuration information of homogeneous-frequency adjacent-domain from the broadcast message of the homogeneous-frequency adjacent-domain of eNB1 indication, and the PRACH configuration information obtaining is reported to eNB1 by measuring reporting message.
(2) UE carries out common frequency measurement according to the measurement indication of eNB1, and measurement result is reported to eNB1, wherein, carries homogeneous-frequency adjacent-domain sign to be measured in measurement indication; UE is the indication that reports based on measurement feedback according to eNB1, from homogeneous-frequency adjacent-domain identifies the broadcast message of corresponding homogeneous-frequency adjacent-domain, obtain the PRACH configuration information of homogeneous-frequency adjacent-domain, and the PRACH configuration information of the homogeneous-frequency adjacent-domain obtaining is reported to eNB1 by measuring reporting message.
Realize situation for above-mentioned two kinds, will in the example following 1 and example 2, be described in detail.
After step S204, said method can also comprise that whether the PRACH configuration information of the homogeneous-frequency adjacent-domain that following operation: eNB1 judges that UE reports is identical with a PRACH configuration information of the first community; If identical, eNB1 is that the first community arranges the PRACH configuration information different from homogeneous-frequency adjacent-domain PRACH configuration information again.Wherein, for judging that the operation whether homogeneous-frequency adjacent-domain PRACH configuration information is identical with a PRACH configuration information will be described in detail in Fig. 7.
Wherein, the PRACH configuration information in foregoing description comprises but is not limited to following content: PRACH configuration index, for generation of logic root sequence index u and the circulation skew high-speed mobile attribute of Ncs, community and the frequency domain position of the PRACH skew (Prach-FrequencyOffset) of random access Preamble (prefix sequence).
By this embodiment, the measurement reporting message of employing reception UE obtains the method for the PRACH configuration information of homogeneous-frequency adjacent-domain, can eliminate Serving cell, base station disturbs for the random access of homogeneous-frequency adjacent-domain, reduce the random access of adjacent area UE because disturbing delay and the failed probability bringing, reduce the random access load of adjacent area, can also avoid disturbing because of random access the waste of the Radio Resource bringing simultaneously.
Below in conjunction with Fig. 3, the application example 1 of embodiment of the method one and the implementation procedure of example 2 are described in detail, for convenience of description, in following two embodiment, the situation that eNB1 Zhong community A and eNB2 Zhong community B be homogeneous-frequency adjacent-domain of only take describes.
Example 1
Fig. 3 is the schematic diagram of the processing method of the PRACH configuration information of example 1 and example 2 according to the present invention, and as shown in Figure 3, this example comprises following operation:
Step 1, if the Serving cell A in eNB1 supports Automatic Neighboring Relation function (Automatic Neighbor Relation Function, referred to as ANRF) community, a part as normal call flow process, eNB1 indicates UE to carry out common frequency measurement by dedicated signaling, the report condition that wherein comprises measurement, such as the signal strength threshold of measuring etc.
Step 3, eNB1 receives the measurement report from UE, and indicates UE to read the PRACH configuration information of community B.
Step 4, UE, according to the indication of eNB1, reads the broadcast message of community B, and therefrom obtains the PRACH configuration information of community B.
The PRACH configuration information of step 5 ，UEJiang community B (its structure is as shown in table 1) reports eNB1 by measurement report.
Table 1PRACH configuration information structure
| Cell title | Cell type and reference value |
| PRACH configuration index | Integer (0 ... 63) |
| Logic root sequence index u | Integer (0 ... 837) |
| Circulation skew Ncs | Integer (0 ... 15) |
| Community high-speed mobile attribute | Boolean |
| The skew of PRACH frequency domain position | Integer (0 ... 104) |
Step 6, by above-mentioned steps, if there is identical PRACH configuration in eNB1 lookup service community A and community B, by self-configuring again for Serving cell A selection a set of from its all homogeneous-frequency adjacent-domains all different PRACH configure.
Example 2
Fig. 3 is the schematic diagram of the processing method of the PRACH configuration information of example 1 and example 2 according to the present invention, and as shown in Figure 3, this example comprises following operation:
Step 1, a part as normal call flow process, eNB1 indicates UE to carry out common frequency measurement by dedicated signaling, in the dedicated signaling here, can carry the list of co-frequency neighbor cell, this list comprises community B, in addition, in signaling, also comprise the report condition of each measurement, such as the signal strength threshold of measuring etc.
Step 3, if eNB1 finds the measurement result of community B and meets predetermined condition, eNB 1 indication UE obtains the PRACH configuration information of community B and reports, for example, the predetermined condition here can be the threshold value of signal strength signal intensity, that is to say, if the signal strength signal intensity of community B reaches this threshold value ，Ze Gai, community B meets predetermined condition.
Step 4, UE attempts reading the broadcast message of community B according to the indication of eNB1.
Step 5, if UE can obtain the PRACH configuration information of community B, reports to eNB1 by measuring reporting message.
Step 6, by above-mentioned steps, if there is identical PRACH configuration in eNB1 lookup service community A and community B, by self-configuring again for Serving cell selection a set of from its all homogeneous-frequency adjacent-domains all different PRACH configure.
By above-mentioned example 1 and example 2, eNB notice UE carries out homogeneous-frequency adjacent-domain and measures, in the measurement reporting message of UE, increase the PRACH configuration information of adjacent area, example 1 is with the difference of example 2: when eNB1 notice UE carries out common frequency measurement, the eNB 1 indication UE of example 1 measures and finds and report homogeneous-frequency adjacent-domain, the community of not specifying UE to measure, and the community that the eNB1 of example 2 has specified UE to measure.
Embodiment bis-
According to embodiments of the invention, a kind of processing method of PRACH configuration information is also provided, be applied to comprise the communication system of the different e NB (such as eNB1 and eNB2) of homogeneous-frequency adjacent-domain, the method comprises: eNB2 receives the PRACH configuration information from eNB1, wherein, PRACH configuration information is the PRACH configuration information of all Serving cells in eNB1.
Particularly, eNB1 sends PRACH configuration information by one of following message to eNB2: X2 sets up request message, X2 sets up response message, eNB configuration update message, neighbor cell configuration information updating message (this message is in the message default according to the embodiment of the present invention).
Wherein, if eNB1 sets up response message by X2, to eNB2, send PRACH configuration information,, before eNB2 receives the PRACH configuration information from eNB1, eNB2 sends X2 to eNB1 and sets up request message.
If eNB1 sends PRACH configuration information by eNB configuration update message to eNB2, PRACH configuration information is the PRACH configuration information of the community of config update in eNB1.
Further, after eNB2 receives the PRACH configuration information from eNB1, in the Serving cell of eNB2 judgement oneself, whether have predetermined cell, wherein, the PRACH configuration information of predetermined cell is identical with the PRACH configuration information of the homogeneous-frequency adjacent-domain receiving; If existed, eNB2 is this predetermined cell configuration PRACH configuration information different from its all homogeneous-frequency adjacent-domains PRACH configuration information again.Wherein, for the PRACH configuration information that judges predetermined cell, the operation whether identical with the PRACH configuration information of the homogeneous-frequency adjacent-domain receiving will be described in detail in Fig. 7.
Wherein, above-mentioned PRACH configuration information can include but not limited to following content: configuration index, for generation of the logic root sequence index u of random Access Preamble sequence and circulation skew Ncs, community high-speed mobile attribute, frequency domain position skew.
By this embodiment, the method of homogeneous-frequency adjacent-domain PRACH configuration information is obtained in employing from other eNB, can eliminate Serving cell, base station disturbs for the random access of homogeneous-frequency adjacent-domain, reduce the random access of adjacent area UE because disturbing delay and the failed probability bringing, reduce the random access load of adjacent area, can also avoid disturbing because of random access the waste of the Radio Resource bringing simultaneously.
Implementation procedure below in conjunction with example 3 to 6 pairs of application embodiments of the method two of example is described in detail, wherein, following instance comprised eNB1 by X2 set up request message, X2 sets up one of response message, eNB configuration update message, these four kinds of message of neighbor cell configuration information updating message and to eNB2, sends the situation of PRACH configuration information.
Example 3
Fig. 4 is the flow chart of the processing method of the PRACH configuration information of example 3 and example 4 according to the present invention, and as shown in Figure 4, this example comprises following operation (step S402 is to step S404):
Step S402, eNB1 initiates X2 to eNB2 and sets up request process, and eNB1 sends X2 to eNB2 and sets up request message, preferably, can set up in the service cell information of request message at X2, carry the PRACH configuration information (the structure reference table 1 of PRACH configuration information) of all communities of this eNB.
Step S404, eNB2 receives after X2 that eNB1 sends sets up request message, eNB2 returns to X2 to eNB1 and sets up response message, and set up at X2 the cell information that carries eNB2 local service community in response message, in the cell information of Serving cell, the PRACH configuration information that comprises all communities of this eNB (PRACH configuration information structure reference table 1).
After this, if eNB1 successfully receives X2 and sets up response message, and eNB1 finds that certain Serving cell in this eNB exists PRACH to configure identical homogeneous-frequency adjacent-domain, by self-configuring again for this Serving cell select a set of and its all homogeneous-frequency adjacent-domains all different PRACH configure.
Example 4
Fig. 4 is the flow chart of the processing method of the PRACH configuration information of example 3 and example 4 according to the present invention, and as shown in Figure 4, this example comprises following operation (step S402 is to step S404):
Step S402, eNB1 initiates X2 to eNB2 and sets up request process, eNB1 sends X2 to eNB2 and sets up request message, and sets up in the service cell information of request message at X2, carries the PRACH configuration information (the structure reference table 1 of PRACH configuration information) of all communities of this eNB;
Step S404, eNB2 receives after X2 that eNB1 sends sets up request message, and eNB2 returns to X2 to eNB 1 and sets up response message.Preferably, can set up the cell information that carries eNB2 local service community in response message at X2, in the cell information of Serving cell, the PRACH configuration information that comprises all communities of this eNB (the structure reference table 1 of PRACH configuration information).
In step S404, if eNB2 finds the Serving cell in this eNB, exist PRACH to configure identical homogeneous-frequency adjacent-domain, by self-configuring again for this Serving cell select a set of and its all homogeneous-frequency adjacent-domains all different PRACH configure.
By above-mentioned example 3 and example 4, eNB sets up message by X2, the service cell information the inside of setting up message at X2 increases the PRACH configuration information of community, correspondingly, increases the PRACH configuration information of community in the X2 of target BS sets up the service cell information of target BS of response message.
Example 5
Fig. 5 is the flow chart of processing method of the PRACH configuration information of the example 5 according to the present invention, and as shown in Figure 5, this example comprises following operation (step S502 is to step S504):
Step S502, eNB1 initiates eNB config update process to eNB2, eNB1 sends eNB configuration update message to eNB2, and in the service cell information of eNB configuration update message, carries the PRACH configuration information (the structure reference table 1 of PRACH configuration information) of this eNB config update community;
Step S504, after eNB2 receives the eNB configuration update message of eNB1 transmission, preferably, can preserve the information of the renewal community of eNB1, wherein, the information of the renewal community of eNB1 comprises the PRACH configuration information of community, then, eNB2 returns to eNB config update acknowledge message to eNB1.
In step S504, if eNB config update process success, and eNB2 finds that the Serving cell in this eNB exists PRACH to configure identical homogeneous-frequency adjacent-domain, by self-configuring again for Serving cell select a set of and its all homogeneous-frequency adjacent-domains all different PRACH configure.
By this example, eNB increases the PRACH configuration information of Serving cell in the service cell information that sends to target eNB configuration update message.
Example 6
Fig. 6 is according to the flow chart of the processing method of the PRACH configuration information of the embodiment of the present invention 6, and as shown in Figure 6, this example comprises following operation (step S602 is to step S604):
Step S602, the neighbor cell configuration information updating process that eNB1 initiates to eNB2, eNB1 sends neighbor cell configuration information updating message to eNB2, and in neighbor cell configuration information updating message, carries the PRACH configuration information (the structure reference table 1 of PRACH configuration information) of the Serving cell of eNB1.
Step S604, eNB2 preferably, can preserve the PRACH configuration information of the Serving cell of eNB1 after receiving the neighbor cell configuration information updating message of eNB1 transmission, and then, eNB2 returns to neighbor cell configuration information updating acknowledge message to eNB1.
In step S604, if eNB2 finds the Serving cell of this eNB, exist PRACH to configure identical homogeneous-frequency adjacent-domain, by self-configuring again for this Serving cell select a set of and its all homogeneous-frequency adjacent-domains all different PRACH configure.
By this example, eNB, by the message of other X2 interface, obtains the PRACH configuration information of the homogeneous-frequency adjacent-domain of Serving cell.
In above-mentioned 6 examples, all related to and judged the whether identical processing of PRACH configuration, below the process of this processing is described in detail.
Fig. 7 is the flow chart that judges the processing procedure whether PRACH configuration is identical according to the embodiment of the present invention, as shown in Figure 7, having provided a kind of judging whether need to carry out the method for reprovision Serving cell PRACH parameter by self-configuring, comprise following operation (step S702 is to step S712):
Step S702, eNB determines that according to the logic root sequence index u of Serving cell, circulation skew Ncs and community high-speed mobile attribute Serving cell produces the set U1 of the logic root sequence of 64 Preamble uses.
Step S704, determines that according to the high-speed mobile attribute of the logic root sequence index u of community, adjacent area, circulation skew Ncs and adjacent area adjacent area produces the set U2 of the logic root sequence of 64 Preamble uses.
Step S706, judges that whether set U1 and U2 that above-mentioned steps S702 and step S704 produce exist common factor, if above-mentioned set U1 and U2 have common factor, proceed to step S708; Otherwise, proceed to step S714.
Step S708, eNB determines that according to the frequency domain position skew (Prach-FrequencyOffset) of the PRACH configuration index of Serving cell, PRACH Serving cell sends the set P1 that Preamble is used time-frequency domain position.
Step S710, determines that according to the frequency domain position skew (Prach-FrequencyOffset) of the PRACH configuration index of adjacent area, PRACH adjacent area sends the set P2 that Preamble is used time-frequency domain position.
Step S712, judges that whether set P1 and P2 that above-mentioned steps S708 and step S710 produce exist common factor, if above-mentioned set P1 and P2 have common factor, proceed to step S716; Otherwise, proceed to step S714.
Step S714, PRACH configuration is not identical.
Step S716; PRACH configuration is identical.
In sum, by the above embodiment of the present invention, the method that provides eNB to obtain homogeneous-frequency adjacent-domain PRACH configuration information, eNB can be according to the PRACH configuration information of the homogeneous-frequency adjacent-domain obtaining, reconfigure the PRACH configuration of Serving cell, avoid or reduce the interference between homogeneous-frequency adjacent-domain.Wherein, for the criterion that reconfigures Serving cell PRACH configuration, can be according to the whether identical principle of above-mentioned several parameters, but be not limited to which, also comprise that above-mentioned message part is identical, part is different but cause the identical situation of root sequence of preamble.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. the processing method of a Physical Random Access Channel PRACH configuration information, be applied to comprise the communication system of the second evolution base station of the one or more homogeneous-frequency adjacent-domains that there is the first evolution base station of the first community and there is described the first community, it is characterized in that, described method comprises:
Described the first evolution base station receives from the measurement reporting message that resides in the subscriber equipment of described the first community, wherein, carries the PRACH configuration information of described one or more homogeneous-frequency adjacent-domains in described measurement reporting message;
Described the first evolution base station obtains the PRACH configuration information of described homogeneous-frequency adjacent-domain from described measurement reporting message.
2. method according to claim 1, is characterized in that, before described the first evolution base station receives the described measurement reporting message from described subscriber equipment, described method also comprises:
Described subscriber equipment is carried out common frequency measurement, and sends measurement report to described the first evolution base station, wherein, carries the Physical Cell Identifier of described one or more homogeneous-frequency adjacent-domains in described measurement report;
Described subscriber equipment obtains PRACH configuration information from the broadcast message of the homogeneous-frequency adjacent-domain of described the first evolution base station indication, and the PRACH configuration information of the described homogeneous-frequency adjacent-domain obtaining is reported to described the first evolution base station by described measurement reporting message.
3. method according to claim 1, is characterized in that, before described the first evolution base station receives the described measurement reporting message from described subscriber equipment, described method also comprises:
Described subscriber equipment is carried out common frequency measurement according to the measurement indication of described the first evolution base station, and measurement result is reported to described the first evolution base station, wherein, carries homogeneous-frequency adjacent-domain sign to be measured in the measurement of described the first evolution base station indication;
Described subscriber equipment is the indication that reports based on described measurement feedback according to described the first evolution base station, from described homogeneous-frequency adjacent-domain identifies the broadcast message of corresponding homogeneous-frequency adjacent-domain, obtain PRACH configuration information, and the PRACH configuration information of the described homogeneous-frequency adjacent-domain obtaining is reported to described the first evolution base station by described measurement reporting message.
4. method according to claim 1, is characterized in that, after described the first evolution base station obtains the PRACH configuration information of described homogeneous-frequency adjacent-domain from described measurement reporting message, described method also comprises:
Described the first evolution base station judges that whether the PRACH configuration information of described homogeneous-frequency adjacent-domain is identical with a PRACH configuration information of described the first community;
If identical, described the first evolution base station is that described the first community arranges the PRACH configuration information different from the PRACH configuration information of described all homogeneous-frequency adjacent-domains again.
5. method according to claim 4, is characterized in that, the PRACH configuration information that judges described homogeneous-frequency adjacent-domain and a described PRACH configuration information whether identical comprising:
According to the logic root sequence index u in the PRACH configuration information of described homogeneous-frequency adjacent-domain, circulation skew Ncs and community high-speed mobile attribute, determine the first set of the logic root sequence of described homogeneous-frequency adjacent-domain;
According to the logic root sequence index u in a described PRACH configuration information, circulation skew Ncs and community high-speed mobile attribute, determine the second set of the logic root sequence of described the first community;
If described the first set and described the second set do not exist common factor, determine that the PRACH configuration information of described homogeneous-frequency adjacent-domain is different from a described PRACH configuration information;
If existing, described the first set and described the second set occur simultaneously, according to the configuration index in the PRACH configuration information of described homogeneous-frequency adjacent-domain and frequency domain position, be offset the 3rd set that definite described homogeneous-frequency adjacent-domain sends the time-frequency domain position of random Access Preamble sequence use, according to the configuration index in a described PRACH configuration information and frequency domain position skew, determine that described the first community sends the 4th set of the time-frequency domain position of random Access Preamble sequence use;
If there is not common factor in described the 3rd set and described the 4th set, the PRACH configuration information of determining described homogeneous-frequency adjacent-domain is different from a described PRACH configuration information, if described the 3rd set and described the 4th set exist, occur simultaneously, determine that the PRACH configuration information of described homogeneous-frequency adjacent-domain is identical with a described PRACH configuration information.
6. according to the method described in any one in claim 1 to 5, it is characterized in that, described PRACH configuration information comprises:
Configuration index, for generation of the logic root sequence index u of random Access Preamble sequence and circulation skew Ncs, community high-speed mobile attribute, frequency domain position skew.
7. a processing method for Physical Random Access Channel PRACH configuration information, is applied to comprise it is characterized in that the communication system of the first evolution base station and second evolution base station of homogeneous-frequency adjacent-domain, and described method comprises:
Described the second evolution base station receives the PRACH configuration information from described the first evolution base station, and wherein, described PRACH configuration information is the PRACH configuration information of the Serving cell in described the first evolution base station.
8. method according to claim 7, is characterized in that, described the first evolution base station sends described PRACH configuration information by one of following message to described the second evolution base station:
X2 sets up request message, neighbor cell configuration information updating message.
9. method according to claim 7, it is characterized in that, described the first evolution base station is set up response message by X2 and is sent described PRACH configuration information to described the second evolution base station, before described the second evolution base station receives the described PRACH configuration information from described the first evolution base station, described method also comprises:
Described the second evolution base station sends X2 to described the first evolution base station and sets up request message.
10. method according to claim 7, it is characterized in that, described the first evolution base station sends described PRACH configuration information by evolution base station configuration update message to described the second evolution base station, wherein, described PRACH configuration information is the PRACH configuration information of the community of config update in described the first evolution base station.
11. methods according to claim 7, is characterized in that, after described the second evolution base station receives the described PRACH configuration information from described the first evolution base station, described method also comprises:
Described the second evolution base station judges in the Serving cell of this base station whether have predetermined cell, and wherein, the PRACH configuration information of described predetermined cell is identical with the described PRACH configuration information receiving;
If existed, described the second evolution base station is again for described predetermined cell arranges the PRACH configuration information different from the described PRACH configuration information receiving.
12. methods according to claim 11, is characterized in that, judge the PRACH configuration information of described predetermined cell and identical the comprising of described PRACH configuration information receiving:
According to the logic root sequence index u of the PRACH configuration information Zhong community of described predetermined cell, circulation skew Ncs and community high-speed mobile attribute, determine the first set of the logic root sequence of described predetermined cell;
According to the logic root sequence index u of the described PRACH configuration information Zhong community receiving, circulation skew Ncs and community high-speed mobile attribute, determine the second set of the logic root sequence of this community;
Described the first evolution base station judges that whether described the first set and described the second set exist common factor, if there is no, determine that the PRACH configuration information of described predetermined cell is different from the described PRACH configuration information receiving;
If existed, according to the configuration index of the PRACH configuration information Zhong community of described predetermined cell and frequency domain position, be offset the 3rd set that definite described predetermined cell sends the time-frequency domain position of random Access Preamble sequence use, according to the configuration index of the described PRACH configuration information Zhong community receiving and frequency domain position skew, determine that this community sends the 4th set of the time-frequency domain position of random Access Preamble sequence use;
Judge whether described the 3rd set and described the 4th set exist common factor, if there is no, the PRACH configuration information of determining described predetermined cell is different from the described PRACH configuration information receiving, if existed, determine that the PRACH configuration information of described predetermined cell is identical with the described PRACH configuration information receiving.
13. according to the method described in any one in claim 7 to 12, it is characterized in that, described PRACH configuration information comprises:
Configuration index, for generation of the logic root sequence index u of random Access Preamble sequence and circulation skew Ncs, community high-speed mobile attribute, frequency domain position skew.
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| US9578649B2 (en) * | 2011-01-20 | 2017-02-21 | Qualcomm Incorporated | Method and apparatus to facilitate support for multi-radio coexistence |
| CN103297953B (en) | 2012-02-24 | 2016-06-01 | 华为技术有限公司 | Physical Cell Identifier configuration, logical root sequence index collocation method and base station equipment |
| CN103781112B (en) * | 2012-10-25 | 2017-11-24 | 华为技术有限公司 | Cell measuring method, device, terminal, network side equipment and system |
| CN103067961B (en) * | 2012-12-18 | 2015-10-28 | 上海大唐移动通信设备有限公司 | A kind of method and system detected with Pin Tongma community |
| CN105103598B (en) * | 2013-04-05 | 2019-02-26 | 瑞典爱立信有限公司 | Operate the method and relevant network node of wireless access network base station |
| CN104703204B (en) * | 2013-12-05 | 2018-08-28 | 中国移动通信集团浙江有限公司 | A kind of the interference acquisition methods and device of timesharing long evolving system |
| CN108243508A (en) * | 2016-12-23 | 2018-07-03 | 北京佰才邦技术有限公司 | A kind of resource allocation method, method for sending information, base station and terminal |
| CN109104766A (en) * | 2017-06-20 | 2018-12-28 | 大唐移动通信设备有限公司 | A kind of Physical Random Access Channel PRACH anti-interference method and device |
| WO2021232332A1 (en) * | 2020-05-21 | 2021-11-25 | Qualcomm Incorporated | Inter-operator measurement configuration for multimedia broadcast multicast services |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200711357A (en) * | 2005-08-23 | 2007-03-16 | Interdigital Tech Corp | Method and apparatus for accessing an uplink random access channel in a single carrier frequency division multiple access system |
| EP1811691A2 (en) * | 2006-01-20 | 2007-07-25 | LG - Nortel Co., Ltd. | Apparatus and method for transmitting and receiving a RACH signal in SC-FDMA system |
| CN101296514A (en) * | 2007-04-28 | 2008-10-29 | 日本电气株式会社 | Method and device for resource allocation control in radio communications system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101390356B (en) * | 2006-02-24 | 2013-07-10 | 华为技术有限公司 | Method and apparatus for wireless resource allocation |
-
2009
- 2009-01-16 CN CN200910005404.9A patent/CN101784122B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200711357A (en) * | 2005-08-23 | 2007-03-16 | Interdigital Tech Corp | Method and apparatus for accessing an uplink random access channel in a single carrier frequency division multiple access system |
| EP1811691A2 (en) * | 2006-01-20 | 2007-07-25 | LG - Nortel Co., Ltd. | Apparatus and method for transmitting and receiving a RACH signal in SC-FDMA system |
| CN101296514A (en) * | 2007-04-28 | 2008-10-29 | 日本电气株式会社 | Method and device for resource allocation control in radio communications system |
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