CN102264094A - Communication realization method between eNBs (evolved Node B), eNB equipment and user equipment - Google Patents
Communication realization method between eNBs (evolved Node B), eNB equipment and user equipment Download PDFInfo
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- CN102264094A CN102264094A CN2010101885574A CN201010188557A CN102264094A CN 102264094 A CN102264094 A CN 102264094A CN 2010101885574 A CN2010101885574 A CN 2010101885574A CN 201010188557 A CN201010188557 A CN 201010188557A CN 102264094 A CN102264094 A CN 102264094A
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Abstract
An embodiment of the invention discloses a communication realization method between eNBs (evolved Node B), eNB equipment and user equipment. The method comprises the following steps: determining user equipment used for forwarding information from served user equipment; sending a request message used for carrying out communication with an object eNB to the user equipment used for forwarding information in order to indicate the user equipment used for forwarding information to initiate a random access process, wherein the random access process is used for realization of information forwarding between a service eNB and the object eNB. According to the embodiment of the invention, using an X2 interface to transmit information is avoided in the process, information transmission of a user between eNBs without the X2 interface is realized when there is no X2 interface or time delay of the X2 is long, and reliability of information transmission between eNBs is improved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of inter base station communication implementation method, base station equipment and subscriber equipment.
Background technology
At Long Term Evolution (Long Term Evolution, be called for short: LTE) in the system, X2 interface is the interface that is used for information interaction between the base station (eNB), the content that can transmit by X2 interface comprises: Inter-Cell Interference Coordination (Inter-Cell Interference Coordination, be called for short: ICIC) (User Equipment is called for short: subscriber equipment) relevant information of Qie Huaning, eNB config update information etc. for information, subscriber equipment.If do not have X2 interface between two base stations of LTE system, above-mentioned information (for example: ICIC information) can't be carried out between the base station alternately; If have X2 interface in the LTE system, but cause the X2 interface time delay bigger because carrier network is disposed, ICIC information can not in time send to adjacent base station, thereby can influence the effect of Inter-Cell Interference Coordination.
Summary of the invention
The embodiment of the invention provides a kind of inter base station communication implementation method, base station equipment and subscriber equipment, in the message transmission that realizes under the situation that does not adopt X2 interface between the base station.
The embodiment of the invention provides a kind of inter base station communication implementation method, comprising:
From the subscriber equipment of accepting to serve, be identified for the subscriber equipment of forwarding information;
Send to the described subscriber equipment that is used for forwarding information and to be used for the request message that communicates with described target BS, to indicate the described subscriber equipment that is used for forwarding information to initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
The embodiment of the invention also provides a kind of inter base station communication implementation method, comprising:
Reception from serving BS be used for target BS between the request message of communicating by letter;
According to the indication of described request message, initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
The embodiment of the invention also provides a kind of base station equipment, comprising:
Determination module is used for being identified for from the subscriber equipment of accepting to serve the subscriber equipment of forwarding information;
Sending module, be used for sending and be used for the request message that communicates with described target BS to the described subscriber equipment that is used for forwarding information, to indicate the described subscriber equipment that is used for forwarding information to initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
The embodiment of the invention also provides a kind of subscriber equipment, comprising:
Receiver module, be used to receive from serving BS be used for target BS between the request message of communicating by letter;
Access module is used for the indication according to described request message, initiates random access procedure to described target BS, and described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
Inter base station communication implementation method, base station equipment and the subscriber equipment of the embodiment of the invention, by the request message that is used for to the subscriber equipment transmission that is used for forwarding information communicating with target BS, so that this subscriber equipment that is used for forwarding information is initiated random access procedure to target BS, because this process has been avoided use X2 interface transmission information, therefore when not having X2 interface or X2 interface time delay big, realized can not realizing passing through user device transmissions information between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of an embodiment of inter base station communication implementation method of the present invention;
Fig. 2 is the schematic flow sheet of another embodiment of inter base station communication implementation method of the present invention;
Fig. 3 is the signaling process figure of the inventive method embodiment;
Fig. 4 is another signaling process figure of the inventive method embodiment;
Fig. 5 is the schematic flow sheet of another embodiment of inter base station communication implementation method of the present invention;
Fig. 6 is the structural representation of an embodiment of base station equipment of the present invention;
Fig. 7 is the structural representation of another embodiment of base station equipment of the present invention;
Fig. 8 is the structural representation of subscriber equipment embodiment of the present invention;
Fig. 9 realizes the structural representation of system embodiment for inter base station communication of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the schematic flow sheet of an embodiment of inter base station communication implementation method of the present invention, and as shown in Figure 1, the embodiment of the invention comprises the steps:
The inter base station communication implementation method that the embodiment of the invention provides, by the request message that is used for to the subscriber equipment transmission that is used for forwarding information communicating with target BS, initiate random access procedure with the subscriber equipment that is used in forwarding information to target BS, the information that needs to transmit can realize transmitting in random access procedure between subscriber equipment and target BS.For example, serving BS can be carried at self information and pass to subscriber equipment in the request message, and subscriber equipment is transmitted to target BS by described random access procedure with information; The also information that need obtain of portability serving BS in the described request message, subscriber equipment can obtain described information from target BS by described random access procedure.For example, can obtain described information by receiving random access response (msg2) or message 4 (msg4), and the information that obtains is sent to serving BS.Certainly, transmission information can be passed through described request message between serving BS and subscriber equipment, but passes through other signaling realization.Alternatively, described request message can comprise the lead code information such as (Preamble) that random access procedure uses.Because this process has been avoided use X2 interface transmission information, therefore when having X2 interface or X2 interface time delay big, do not realized can not realizing transmitting information by the user between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Fig. 2 in the embodiment of the invention, is called serving BS for subscriber equipment provides serving base station for the schematic flow sheet of another embodiment of inter base station communication implementation method of the present invention, and subscriber equipment base station to be accessed is a target BS; As shown in Figure 2, the embodiment of the invention comprises the steps:
Step 201, serving BS need with situation that target BS is communicated by letter under, serving BS receives the measurement report that the subscriber equipment of accepting to serve sends.Alternatively, serving BS can receive the positional information from subscriber equipment.
Step 202, serving BS are according to neighbours' signal of base station quality information that this measurement report comprised, the positional information of subscriber equipment, carrier aggregation ability (the Carrier Aggregation of subscriber equipment, be called for short: CA) or the RF capabilities of subscriber equipment (Radio Frequency, be called for short: each RF) or multinomial is identified for the subscriber equipment of forwarding information from the subscriber equipment of accepting to serve.
Wherein, the embodiment of the invention only with the RF capabilities of the carrier aggregation ability of neighbours' signal of base station quality information, positional information, subscriber equipment, subscriber equipment, in the carrier aggregation ability each or multinomial be that example illustrates, but RF ability, positional information, carrier aggregation ability can not form the restriction to the ability information described in the embodiment of the invention; In addition, serving BS can also be selected one or more subscriber equipment that is used for forwarding information, with forwarding information between assistance services base station and the target BS.
Step 203, serving BS are reshuffled the subscriber equipment that this is used for forwarding information.
Particularly, can be the duration that is identified for the space of forwarding information for this subscriber equipment that is used for forwarding information.Perhaps, reconfigurable this of serving BS is used for the carrier wave of the subscriber equipment of forwarding information, specifically can use media access control layer the control command activation this be used for the part carrier wave of the subscriber equipment of forwarding information so that this subscriber equipment that is used for forwarding information can be adjusted the rf chain of work automatically.
For example: this subscriber equipment that is used for forwarding information has only a RF chain, do not measure space (GAP) in this current configuration of subscriber equipment that is used for forwarding information, it is smaller perhaps to measure space (GAP), then serving BS can be used for the special space (GAP) of user device configuration of forwarding information for this, the measurement space (GAP) of perhaps upgrading this subscriber equipment that is used for forwarding information is the longer time, makes subscriber equipment can utilize described measurement space forwarding information on the current carrier wave; Space described in the embodiment of the invention (GAP) can be for having the space of special nature, only carry out once or limited number of times in this space (GAP), and the duration of this space (GAP) can not be subjected to measure normally the restriction of space (GAP), the duration in this space (GAP) can be determined to the duration of serving BS random access procedure according to the subscriber equipment that is used for forwarding information, and, the random access procedure of finishing this serving BS when subscriber equipment can discharge this space (GAP), space (GAP) state before perhaps this subscriber equipment that is used for forwarding information returns to and reshuffles.
Again for example: if this subscriber equipment that is used for forwarding information has two RF chains and current all in use, then serving BS can utilize reconfiguration course to allow this wherein RF chain free time that is used for the subscriber equipment of forwarding information get off, the subscriber equipment of forwarding information is current to have a plurality of carrier waves using if be used for, serving BS can reduce the work carrier wave of this subscriber equipment that is used for forwarding information by reshuffling or deactivate signaling, thereby makes wherein RF chain of this subscriber equipment that is used for forwarding information become the free time or still less task is arranged.Thereby can do necessary preparation for this subscriber equipment and communicating by letter of target BS that is used for forwarding information; If this subscriber equipment that is used for forwarding information can be realized receiving and dispatching in two carrier waves by adjusting center frequency point, and does not influence current ongoing business, also can not use this space (GAP) and/or idle RF chain on a RF chain; Further, if this current configuration of subscriber equipment that is used for forwarding information satisfies the demands, or this subscriber equipment that is used for forwarding information can realize that then step 203 can be omitted and not carry out by adjusting the RF center frequency point.
Step 204, send to this subscriber equipment that is used for forwarding information and to be used for the request message that communicates with target BS, initiate random access procedure to indicate this subscriber equipment that is used for forwarding information to target BS, wherein, random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
For example: the subscriber equipment that is used for forwarding information sends information or receives information from target BS to target BS; Can comprise the information that subscriber equipment that necessary needs are used for forwarding information sends to target BS in this request message, also can comprise the lead code information such as (Preamble) that random access procedure uses, the frequency information that can also comprise this target BS, for example: if not execution in step 204 time, then need to this subscriber equipment that is used for forwarding information indicate this serving BS cell identifier (sub-district ID), insert frequency information etc. need information transmitted so that this subscriber equipment that is used for forwarding information identifies Target cell and/or target BS and transmission.
Step 205, this is used for the system message of the subscriber equipment receiving target base station broadcast of forwarding information.
Step 206, this subscriber equipment that is used for forwarding information obtain execution from this system message and insert required random access resource at random.
Step 207, this subscriber equipment that is used for forwarding information are carried out random access procedure on random access resource.If special-purpose lead code that serving BS has been user device configuration, then subscriber equipment can also use special-purpose lead code to insert at random.
Wherein, in above-mentioned steps 205～step 207, if carrying out according to request message at least two spaces (GAP), this subscriber equipment that is used for forwarding information initiates random access procedure to this target BS, for example realize with this target BS synchronous at first space (GAP), and the system message of receiving target base station broadcast, random access procedure is carried out in second space (GAP), then need keep synchronous in the middle of two spaces (GAP) between this subscriber equipment that is used for forwarding information and this target BS.
Step 208, being used to of receiving that this subscriber equipment that is used for forwarding information returns are confirmed the affirmation information of communicating by letter and finishing with this target BS; In addition, if subscriber equipment makes a mistake in the process of this target BS communication attempting, then this subscriber equipment that is used for forwarding information can also be to serving BS feeding back unsuccessful message; Further, acknowledge message and failed message can be same class message, can be acknowledge message or failed message by the identification of the information content in such message.
The inter base station communication implementation method that the embodiment of the invention provides, by the request message that is used for to the subscriber equipment transmission that is used for forwarding information communicating with target BS, so that this subscriber equipment that is used for forwarding information is initiated random access procedure to target BS, because this process has been avoided use X2 interface transmission information, therefore when not having X2 interface or X2 interface time delay big, realized can not realizing passing through user device transmissions information between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Fig. 3 is the signaling process figure of the inventive method embodiment, in the embodiment of the invention, is called serving BS for subscriber equipment provides serving base station, and subscriber equipment base station to be accessed is a target BS; As shown in Figure 3, the embodiment of the invention comprises the steps:
The decision of step 301, serving BS communicates with target BS, and communicating by letter between serving BS and the target BS is specifically as follows: serving BS need send information to target BS, and perhaps serving BS is determined and need be received information from target BS.
For example: serving BS is determined be subjected to interference from target BS at this subscriber equipment under the serving BS on certain or some carrier waves according to the measurement report of the subscriber equipment under this serving BS, the annoyance level that serving BS is subjected to according to the subscriber equipment under the serving BS determines that needs send interference coordination information to target BS, and then this interference coordination information is the information that serving BS need send to target BS; Further, interference coordination information can be the transmitting power that the indication target BS reduces carrier wave, can also be the information such as indication that the indication target BS is changed the carrier wave that uses.
Step 302, serving BS obtain the ability information of accepting the subscriber equipment of serving; Wherein, subscriber equipment that accepting under the serving BS served will be separately ability information such as RF ability, CA ability send to serving BS, also can be that the subscriber equipment under the serving BS answers the requirement of serving BS to ability information such as serving base stations report RF ability, carrier aggregation abilities.Serving BS can just obtain aforementioned capabilities information and be stored in the serving BS after subscriber equipment enters connection mode.The described flow process of obtaining various information may not be the flow process that present embodiment needs, and present embodiment is not done qualification to this.
Subscriber equipment under step 303, the serving BS is controlled to the serving base stations report measurement report according to the measurement of serving BS; Wherein, serving BS can just be configured and reporting measurement reports after subscriber equipment enters connection mode.
Step 304, serving BS are identified for the subscriber equipment of forwarding information according at least a information in the RF ability of the subscriber equipment under this serving BS, CA ability, positional information, the measurement report, and this subscriber equipment that is used for forwarding information is for relatively being adapted at sending between serving BS and the target BS/receiving the subscriber equipment of information; Further, serving BS can be selected one or more subscriber equipment that is used for forwarding information, with forwarding information between assistance services base station and the target BS.
Step 305, communicate (transmission/reception information) for satisfying by this subscriber equipment and target BS that is used for forwarding information, serving BS carries out reshuffling of necessity to this subscriber equipment that is used for forwarding information; For example: this subscriber equipment that is used for forwarding information has only a RF chain, do not measure space (GAP) in this current configuration of subscriber equipment that is used for forwarding information, it is smaller perhaps to measure space (GAP) duration, then serving BS can be used for the special space (GAP) of user device configuration of forwarding information for this, the duration in measurement space (GAP) that perhaps this is used for the subscriber equipment of forwarding information is updated to longer duration, for example: the duration of measuring space (GAP) is 6 milliseconds, and then the duration in this special space (GAP) can be greater than 6 milliseconds.
Again for example: if this subscriber equipment that is used for forwarding information has two RF chains and current all in use, then serving BS can utilize the control information of carrier wave reconfiguration course or media access control layer to allow this wherein RF chain free time that is used for the subscriber equipment of forwarding information get off, the subscriber equipment of forwarding information is current to have a plurality of carrier waves using if this is used for, then serving BS can reduce the work carrier wave of this subscriber equipment that is used for forwarding information by reshuffling or deactivate signaling, thereby makes wherein RF chain of this subscriber equipment that is used for forwarding information become the free time or still less task is arranged.Thereby for this subscriber equipment and communicating by letter of target BS that is used for forwarding information is done necessary preparation; Further, if this current configuration of subscriber equipment that is used for forwarding information satisfies the demands, perhaps this subscriber equipment that is used for forwarding information is received and sent messages when the RF chain is realized on a plurality of carrier waves by adjusting, do not use space (GAP) can realize and the communicating by letter of target BS, then can not carry out this step 305.
Step 306, serving BS send a request message to the subscriber equipment that this is used for forwarding information, ask this subscriber equipment that is used for forwarding information and target BS to communicate, for example: this subscriber equipment that is used for forwarding information sends information or receives information from target BS to target BS; Can comprise the information that necessary this subscriber equipment that is used for forwarding information of needs sends to target BS in this request message, also can comprise the lead code (Preamble) that random access procedure uses, can also comprise target BS cell identifier, insert information such as frequency need information transmitted so that this subscriber equipment that is used for forwarding information identifies Target cell and/or target BS and transmission.
Step 307, this subscriber equipment that is used for forwarding information are initiated random access procedure to target BS, this subscriber equipment that is used for forwarding information is carried out the process that communicates with target BS, and for example: this subscriber equipment that is used for forwarding information is used for the information of the subscriber equipment reception of forwarding information from target BS to target BS transmission information or this; Further, related random access procedure mainly contains following two kinds in this step 307: one, based on the competition access at random, two, based on non-competing access at random.This subscriber equipment that is used for forwarding information sends to the information of target BS and can carry in the message 3 (msg3) of random access procedure, thereby realizes that this subscriber equipment that is used for forwarding information sends interference coordination information to target BS; This subscriber equipment that is used for forwarding information receives and can carry in the message 2 (msg2) or the message 4 (msg4) of random access procedure from the information of target BS, thereby realizes the interference coordination information that this subscriber equipment receiving target base station that is used for forwarding information sends.Suppose: serving BS has two carrier waves (CC1 and CC2), target BS has a work carrier wave CC1: if this subscriber equipment that is used for forwarding information only has a RF (intra-band CA), this subscriber equipment that is used for forwarding information is operated in CC1, then this subscriber equipment that is used for forwarding information need be in the space (GAP) and target BS communicate; If this subscriber equipment that is used for forwarding information only has a RF (intra-band CA), this subscriber equipment that is used for forwarding information is operated in CC2, if CC1 and CC2 are (intra-band) carrier waves in the band, then this subscriber equipment that is used for forwarding information can be by adjusting the center frequency point of RF, thereby realize receiving and sending messages and receiving and sending messages on CC2 with target BS at CC1 with serving BS simultaneously, can not need space (GAP) this moment; If this subscriber equipment that is used for forwarding information has a more than RF, and this subscriber equipment that is used for forwarding information is operated in CC1, this subscriber equipment that is used for forwarding information need be in the space (GAP) and target BS communicate; If this subscriber equipment that is used for forwarding information has a more than RF, and this subscriber equipment that is used for forwarding information is operated in CC2, and this subscriber equipment that is used for forwarding information can use another RF chain and target BS to communicate; If this subscriber equipment that is used for forwarding information has a more than RF, and this subscriber equipment that is used for forwarding information is operated in CC1 and CC2, then serving BS can be dispatched this and is used for the subscriber equipment of forwarding information on a RF, perhaps allow this subscriber equipment that is used for forwarding information only be operated in one of them CC, this subscriber equipment that is used for forwarding information can use another RF chain and target BS to communicate, and this subscriber equipment that is used for forwarding information also can utilize space (GAP) and target BS to communicate certainly; Can inform that by serving BS this is used for the subscriber equipment of forwarding information by above-mentioned steps 306, also can decide in its sole discretion from aforesaid way and determine to select suitable manner by this subscriber equipment that is used for forwarding information.
Step 308, this subscriber equipment that is used for forwarding information send acknowledge message to serving BS, to confirm that this subscriber equipment that is used for forwarding information finished the process that communicates with serving BS, for example: this subscriber equipment that is used for forwarding information has been finished to target BS and has been sent information or finished the process of the information of receiving target base station.Can carry the information that target BS need send to serving BS in this acknowledge message.If failure has taken place in executive communication process (transmission information or reception information) in this subscriber equipment that is used for forwarding information, perhaps, receive the affirmation message of this random access procedure mistake of indication that this subscriber equipment that is used for forwarding information returns, then this subscriber equipment that is used for forwarding information need clearly be indicated this procedure failure to serving BS.
Wherein, above-mentioned steps 307 there is no temporal strict demand with step 308, also can be first execution in step 308 execution in step 307 again, the affirmation message that sending this moment is used to confirm communicate by letter with this target BS finishes or the affirmation message of indication random access procedure mistake only represent whether this subscriber equipment that is used for forwarding information possesses the primary condition that execution inserts at random to target BS.
Pass through said process, be used to carry out the request message of communicating by letter between serving BS and the target BS by sending to the subscriber equipment that is used for forwarding information, initiate random access procedure with the subscriber equipment that is used in forwarding information to target BS, because this process has been avoided use X2 interface transmission information, therefore when not having X2 interface or X2 interface time delay big, realized can not realizing passing through user device transmissions information between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Fig. 4 is another signaling process figure of the inventive method embodiment, in the embodiment of the invention, is called serving BS for subscriber equipment provides serving base station, and subscriber equipment base station to be accessed is a target BS; As shown in Figure 4, the embodiment of the invention comprises the steps:
The decision of step 401, serving BS communicates with target BS, and communicating by letter between serving BS and the target BS is specifically as follows: serving BS need send information to target BS, and perhaps serving BS is determined and need be received information from target BS.
For example: serving BS is determined be subjected to interference from target BS at the certain customers' equipment under the serving BS service on certain or some carrier waves according to the measurement report of the subscriber equipment under this serving BS, the annoyance level that serving BS is subjected to according to subscriber equipment determines that needs send interference coordination information to target BS, this interference coordination information can be the transmitting power that the indication target BS reduces carrier wave, and perhaps the information such as indication of the carrier wave that uses are changed in the indicating target base station.
Subscriber equipment under step 402, the serving BS is being accepted the service from serving BS, accepting RF capabilities, carrier aggregation (the Carrier Aggregation of the subscriber equipment of serving, be called for short: CA) etc. ability information has reported to serving BS, the subscriber equipment that accepting under the serving BS served also can answer the requirement of serving BS to ability information such as serving base stations report RF ability, carrier aggregation abilities, and serving BS can just obtain aforementioned capabilities information and be stored in the serving BS after subscriber equipment enters connection mode.
Subscriber equipment under step 403, the serving BS is controlled to serving base stations report measurement report separately according to the measurement of serving BS; Wherein, can be after subscriber equipment enters connection mode just allocating and measuring control and measurement report, and this measurement report reported serving BS, serving BS can upgrade the measurement control of subscriber equipment as required.
Step 404, serving BS are identified for the subscriber equipment of forwarding information according in the current RF ability of accepting the subscriber equipment of serving, CA ability, measurement report, the positional information at least one, and this subscriber equipment relatively is fit to the information of transmission/receiving target base station; Further, serving BS can be selected one or more subscriber equipment that is used for forwarding information, with forwarding information between assistance services base station and the target BS.
Step 405, communicate (transmission/reception information) for satisfying by subscriber equipment and the target BS that is used for forwarding information, serving BS carries out reshuffling of necessity to this subscriber equipment that is used for forwarding information; For example: the subscriber equipment that is used for forwarding information has only a RF chain, do not measure space (GAP) in the current configuration of the subscriber equipment that is used for forwarding information, it is smaller perhaps to measure space (GAP) duration, then serving BS can be used for the special space of user device configuration (GAP) of forwarding information for this, the measurement space (GAP) of perhaps upgrading this subscriber equipment that is used for forwarding information is the longer time, this special space (GAP) can be for provisional, then discharge this special space (GAP) when this subscriber equipment that is used for forwarding information executes with communicating by letter of target BS, perhaps return to space (GAP) state before reshuffling.
Again for example: if this subscriber equipment that is used for forwarding information has two RF chains and current all in use, then serving BS can utilize reconfiguration course to allow this wherein RF chain free time that is used for the subscriber equipment of forwarding information get off, the subscriber equipment of forwarding information is current to have a plurality of carrier waves using if this is used for, serving BS can reduce the work carrier wave of this subscriber equipment that is used for forwarding information by reshuffling or deactivate signaling, thereby makes wherein RF chain of this subscriber equipment that is used for forwarding information become the free time or still less task is arranged.Thereby can do necessary preparation for this subscriber equipment and communicating by letter of target BS that is used for forwarding information; Further, if this current configuration of subscriber equipment that is used for forwarding information satisfies the demands, if perhaps this subscriber equipment that is used for forwarding information can be received and dispatched when the RF chain is realized on a plurality of carrier waves by adjusting, do not use space (GAP) thus realize and the communicating by letter of target BS that then this step 405 can be omitted and not carry out.
The subscriber equipment that step 406, serving BS utilization eat dishes without rice or wine to be used for to this forwarding information sends a request message, ask this subscriber equipment that is used for forwarding information and target BS to communicate, for example: this subscriber equipment that is used for forwarding information sends information or receives information from target BS to target BS; Can comprise the information that necessary this subscriber equipment that is used for forwarding information of needs sends to target BS in this request message, also can comprise the lead code information such as (Preamble) that random access procedure uses, can also comprise target BS cell identifier, insert information such as frequency need information transmitted so that this subscriber equipment that is used for forwarding information identifies Target cell and/or target BS and transmission.
By above-mentioned steps 401～step 406, make this subscriber equipment that is used for forwarding information initiate random access procedure to target BS, this transmission random access procedure specifically can comprise following process:
Step 407, this subscriber equipment that is used for forwarding information are carried out the down-going synchronous to target BS, if this subscriber equipment that is used for forwarding information is synchronous with target BS, then this step 407 can be omitted.
Step 408, this subscriber equipment that is used for forwarding information receive necessary system message from target BS, obtain and carry out the required random access resource of random access procedure (as Random Access Channel etc.).
Step 409, this subscriber equipment that is used for forwarding information are carried out the random access procedure to target BS.
In above-mentioned steps 407～step 409, can be according to the length of space (GAP), this subscriber equipment that is used for forwarding information can be finished above-mentioned steps 407～step 409 in a space (GAP), this subscriber equipment that is used for forwarding information also can be in first space (GAP) completing steps 407 and step 408, at second space (GAP) completing steps 409, between two spaces (GAP), this subscriber equipment that is used for forwarding information need keep with target BS synchronously.This subscriber equipment that is used for forwarding information also can be carried out above-mentioned steps 407～step 409 respectively in 3 spaces (GAP), at this moment, this subscriber equipment that is used for forwarding information need keep synchronous with target BS between 3 spaces (GAP).
Step 410, this subscriber equipment that is used for forwarding information send acknowledge message to serving BS, to confirm that this subscriber equipment that is used for forwarding information finished the process that communicates with serving BS, for example: this subscriber equipment that is used for forwarding information has been finished to target BS and has been sent information or finished the process of the information of receiving target base station.Can carry the information that target BS need send to serving BS in this acknowledge message.If failure has taken place in executive communication process (information of transmission information or reception) in this subscriber equipment that is used for forwarding information, then this subscriber equipment that is used for forwarding information need send the affirmation message of this random access procedure mistake of indication to serving BS, clearly to indicate this random access procedure failure of serving BS.
Certainly, also can be in execution in step 410 after the execution of step 406, that is to say, there is no temporal strict demand between step 407 and the step 410, at this moment, confirm to communicate by letter with this target BS affirmation message finished or the affirmation message of this random access procedure mistake of this indication of being used to of transmission only represents whether this subscriber equipment that is used for forwarding information possesses the primary condition that execution inserts at random to target BS.
Pass through said process, pass through said process, by the request message that is used for to the subscriber equipment transmission that is used for forwarding information communicating with described target BS, initiate random access procedure with the subscriber equipment that is used in forwarding information to target BS, because this process has been avoided use X2 interface transmission information, therefore when not having X2 interface or X2 interface time delay big, realized can not realizing passing through user device transmissions information between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Fig. 5 is the schematic flow sheet of another embodiment of inter base station communication implementation method of the present invention, and as shown in Figure 5, the embodiment of the invention comprises the steps:
Step 501, receive from serving BS be used for target BS between the request message of communicating by letter;
Step 502, according to the indication of this request message, initiate random access procedure to target BS, interim, random access procedure is used to be implemented in forwarding information between serving BS and target BS.
The inter base station communication implementation method that the embodiment of the invention provides, by from serving BS be used for target BS between the request message of communicating by letter initiate random access procedure to target BS, because this process has been avoided use X2 interface transmission information, therefore when having X2 interface or X2 interface time delay big, do not realized can not realizing transmitting information by the user between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
In one case, above-mentioned embodiment illustrated in fig. 5 in, can also comprise:
Subscriber equipment is reshuffled according to described serving BS, obtains the duration in the definite space that is used for forwarding information of serving BS; Then step 502 can specifically comprise:
In described space, initiate random access procedure to described target BS.
Wherein, initiating random access procedure to described target BS in described space specifically can comprise: initiate random access procedure to described target BS at least two spaces, then also comprise: keep synchronously with described target BS between described at least two spaces.
In another case, on above-mentioned basis embodiment illustrated in fig. 5, can also comprise:
Receive the control command of the media access control layer that serving BS sends, reshuffle or deexcitation part carrier wave according to the indication of described control command, with the rf chain of described part carrier wave correspondence as the rf chain that is used for forwarding information; Then step 502 can specifically comprise: utilize the described rf chain that is used for forwarding information to initiate random access procedure to described target BS.
Fig. 6 is the structural representation of an embodiment of base station equipment of the present invention, and as shown in Figure 6, present embodiment comprises: determination module 61, sending module 62;
Wherein, determination module 61 is identified for the subscriber equipment of forwarding information from the subscriber equipment of accepting to serve; Sending module 62 sends to the described subscriber equipment that is used for forwarding information and is used for the request message that communicates with described target BS, to indicate the described subscriber equipment that is used for forwarding information to initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
The base station equipment that the embodiment of the invention provides, send to the subscriber equipment that is used for forwarding information by sending module 62 and to be used for the request message that communicates with target BS, initiate random access procedure with the subscriber equipment that is used in forwarding information to target BS, because this process has been avoided use X2 interface transmission information, therefore when not having X2 interface or X2 interface time delay big, realized can not realizing passing through user device transmissions information between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Fig. 7 is the structural representation of another embodiment of base station equipment of the present invention, and as shown in Figure 7, present embodiment comprises: determination module 71, reshuffle module 72, sending module 73;
Wherein, determination module 71 is identified for the subscriber equipment of forwarding information from the subscriber equipment of accepting to serve; Reshuffling 72 pairs of described subscriber equipmenies that are used for forwarding information of module reshuffles, duration with the space that is identified for forwarding information, the perhaps described module 72 of reshuffling can be used for using the control command of media access control layer to reshuffle or the described part carrier wave that is used for the subscriber equipment of forwarding information of deexcitation, so that the rf chain of the subscriber equipment of described part carrier wave correspondence can be used to forwarding information; Sending module 73 sends to the described subscriber equipment that is used for forwarding information and is used for the request message that communicates with described target BS, to indicate the described subscriber equipment that is used for forwarding information to initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
The base station equipment that the embodiment of the invention provides, send to the subscriber equipment that is used for forwarding information by sending module 73 and to be used for the request message that communicates with described target BS, initiate random access procedure with the subscriber equipment that is used in forwarding information to target BS, because this process has been avoided use X2 interface transmission information, therefore when not having X2 interface or X2 interface time delay big, realized can not realizing passing through user device transmissions information between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Fig. 8 is the structural representation of subscriber equipment embodiment of the present invention, and as shown in Figure 8, present embodiment comprises: receiver module 81, access module 82;
Wherein, receiver module 81 receive from serving BS be used for target BS between the request message of communicating by letter; Access module 82 is initiated random access procedure according to the indication of described request message to described target BS, and described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
The subscriber equipment that the embodiment of the invention provides, by receiver module 81 receive from serving BS be used for target BS between the request message of communicating by letter, access module 82 is initiated random access procedure to target BS, because this process has been avoided use X2 interface transmission information, therefore when having X2 interface or X2 interface time delay big, do not realized can not realizing transmitting information by the user between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Further, above-mentioned embodiment illustrated in fig. 8 in, can also comprise: first acquisition module, be used for according to the reshuffling of described serving BS, obtain the duration in the space that is used for forwarding information that serving BS determines; Then access module 82 can also comprise: first access unit is used for initiating random access procedure in described space to described target BS; And/or,
Above-mentioned embodiment illustrated in fig. 8 in, can also comprise: second acquisition module, be used to receive the control command of the media access control layer that serving BS sends, reshuffle or deexcitation part carrier wave according to the indication of described control command, with the rf chain of described part carrier wave correspondence as the rf chain that is used for forwarding information; Then access module 82 can also comprise: second access unit, the rf chain that is used for forwarding information that is used to utilize described serving BS to determine is initiated random access procedure to described target BS.
Fig. 9 is the structural representation of inter base station communication realization system embodiment of the present invention, and as shown in Figure 9, present embodiment comprises: serving BS 91, target BS 92;
Serving BS 91 is used for being identified for from the subscriber equipment of accepting to serve the subscriber equipment of forwarding information, send to this subscriber equipment that is used for forwarding information and to be used for the request message that communicates with target BS 92, initiate random access procedure to indicate this subscriber equipment that is used for forwarding information to target BS 92, wherein, random access procedure is used to be implemented in serving BS 91 and 92 forwarding informations of target BS.Further, serving BS 91 can be reshuffled this subscriber equipment that is used for forwarding information, makes subscriber equipment can have the rf chain resource or the space resource of forwarding information, and detailed process can be referring to embodiment before.Certainly, if subscriber equipment has had recombine resource, as have idle rf chain or enough spaces, the reconfiguration course of serving BS 91 can be carried out.
The inter base station communication that the embodiment of the invention provides is realized system, send to the subscriber equipment that is used for forwarding information by serving BS 91 and to be used for the request message that communicates with target BS 92, initiate random access procedure with the subscriber equipment that is used in forwarding information to target BS 92, because this process has been avoided use X2 interface transmission information, therefore when not having X2 interface or X2 interface time delay big, realized can not realizing passing through user device transmissions information between the base station, thereby improved reliability of information transmission between the base station by X2 interface.
Need to prove, base station described in the embodiment of the invention is a kind of access website on the wide meaning, be specifically as follows the base station of other form in macro cell base station (macro eNB), microcell base station (Micro eNB), picocell base station (pico eNB), Home eNodeB (HeNB), repeater (Relay), the LTE/LTEA system, the base station of the various forms of all right right and wrong LTE system, for example: WiMAX base station, WCDMA base station etc.; OTA message described in the embodiment of the invention, can include but not limited to Inter-Cell Interference Coordination (Inter-Cell Interference Coordination, be called for short: ICIC) all message of X2 interface agreement correspondence in existing LTE such as information, handoff request message (HO req), resource status report (resource status report), the eNB configuration information system can also be any message mutual between two base stations.
Related random access procedure among the invention described above embodiment, not only can use the random access procedure among the 3GPP LTE, also can be improved random access procedure, also can be other system () random access procedure etc. for example: WCDMA, WiMAX system etc.; Further, the described technical scheme of the embodiment of the invention can also be applied to other (for example WCDMA etc.) and use the field of access technology at random.
The those skilled in the art can be well understood to, and is the convenience described and succinct, and the concrete course of work of the system of foregoing description, equipment, module and unit can not repeat them here with reference to the corresponding process among the preceding method embodiment.
One of ordinary skill in the art will appreciate that: all or part of step that realizes the foregoing description can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.Those skilled in the art can understand, and the foregoing description can interosculate under situation about not clashing and obtain new embodiment.
Claims (15)
1. an inter base station communication implementation method is characterized in that, comprising:
From the subscriber equipment of accepting to serve, be identified for the subscriber equipment of forwarding information;
Send to the described subscriber equipment that is used for forwarding information and to be used for the request message that communicates with described target BS, to indicate the described subscriber equipment that is used for forwarding information to initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
2. method according to claim 1 is characterized in that, also comprises:
Receive the measurement report that the described subscriber equipment of accepting to serve sends;
Describedly determine that from the subscriber equipment of accepting to serve the subscriber equipment of forwarding information comprises:
According in the RF capabilities of the carrier aggregation ability of the positional information of neighbours' signal of base station quality information that described measurement report comprised, described subscriber equipment, subscriber equipment or subscriber equipment each or multinomial, from the subscriber equipment of accepting to serve, be identified for the subscriber equipment of forwarding information.
3. method according to claim 1 and 2 is characterized in that, also comprises:
The described subscriber equipment that is used for forwarding information is reshuffled, with the duration in the space that is identified for forwarding information; Or,
The rf chain of the subscriber equipment of described part carrier wave correspondence use the control command of media access control layer to reshuffle or the described part carrier wave that is used for the subscriber equipment of forwarding information of deexcitation, so that can be used to forwarding information.
4. method according to claim 1 and 2 is characterized in that, the information of described forwarding is interference coordination information.
5. an inter base station communication implementation method is characterized in that, comprising:
Reception from serving BS be used for target BS between the request message of communicating by letter;
According to the indication of described request message, initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
6. method according to claim 5 is characterized in that,
Also comprise:, obtain the duration in the definite space that is used for forwarding information of serving BS according to reshuffling of described serving BS;
Describedly initiate random access procedure to described target BS and comprise: in described space, initiate random access procedure to described target BS.
7. method according to claim 6 is characterized in that,
Describedly in described space, initiate random access procedure and comprise: at least two spaces, initiate random access procedure to described target BS to described target BS;
Described method also comprises:
Between described at least two spaces, keep synchronously with described target BS.
8. method according to claim 5 is characterized in that,
Also comprise: receive the control command of the media access control layer that serving BS sends, reshuffle or deexcitation part carrier wave according to the indication of described control command, with the rf chain of described part carrier wave correspondence as the rf chain that is used for forwarding information;
Describedly initiate random access procedure to described target BS and comprise: utilize the described rf chain that is used for forwarding information to initiate random access procedure to described target BS.
9. according to each described method in the claim 5 to 8, it is characterized in that the information of described forwarding is interference coordination information.
10. according to each described method in the claim 5 to 8, it is characterized in that, also comprise:
From target BS receiving system message, carry out the required random access resource of described random access procedure to obtain.
11. a base station equipment is characterized in that, comprising:
Determination module is used for being identified for from the subscriber equipment of accepting to serve the subscriber equipment of forwarding information;
Sending module, be used for sending and be used for the request message that communicates with described target BS to the described subscriber equipment that is used for forwarding information, to indicate the described subscriber equipment that is used for forwarding information to initiate random access procedure to described target BS, described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
12. equipment according to claim 11 is characterized in that, also comprises: reshuffle module and be used for the described subscriber equipment that is used for forwarding information is reshuffled, with the duration in the space that is identified for forwarding information; Or,
The described module of reshuffling is used to use the control command of media access control layer to reshuffle or the described part carrier wave that is used for the subscriber equipment of forwarding information of deexcitation, so that the rf chain of the subscriber equipment of described part carrier wave correspondence can be used to forwarding information.
13. a subscriber equipment is characterized in that, comprising:
Receiver module, be used to receive from serving BS be used for target BS between the request message of communicating by letter;
Access module is used for the indication according to described request message, initiates random access procedure to described target BS, and described random access procedure is used to be implemented in forwarding information between described serving BS and target BS.
14. equipment according to claim 13 is characterized in that, also comprises: first acquisition module, be used for according to the reshuffling of described serving BS, obtain the duration in the space that is used for forwarding information that serving BS determines;
Described access module comprises: first access unit is used for initiating random access procedure in described space to described target BS.
15. equipment according to claim 13, it is characterized in that, also comprise: second acquisition module, be used to receive the control command of the media access control layer that serving BS sends, reshuffle or deexcitation part carrier wave according to the indication of described control command, with the rf chain of described part carrier wave correspondence as the rf chain that is used for forwarding information;
Described access module comprises: second access unit is used to utilize the described rf chain that is used for forwarding information to initiate random access procedure to described target BS.
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