CN102256280A - Random access method and equipment thereof - Google Patents
Random access method and equipment thereof Download PDFInfo
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- CN102256280A CN102256280A CN2011102440407A CN201110244040A CN102256280A CN 102256280 A CN102256280 A CN 102256280A CN 2011102440407 A CN2011102440407 A CN 2011102440407A CN 201110244040 A CN201110244040 A CN 201110244040A CN 102256280 A CN102256280 A CN 102256280A
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- subscriber equipment
- initial access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
Abstract
An embodiment of the invention relates to a random access method and equipment thereof. The method comprises the following steps: according to a random access detection threshold, determining whether user equipment initiates random access or not; if so, sending a random access response to the user equipment; after sending the random access response, determining whether a wireless resource connection request sent by the user equipment is received or not; if not, determining the random access initiated by the user equipment as a false access, and accumulating number of the false accesses; when the number of the false accesses exceed a preset first threshold, informing the user equipment in a cell to raise initial access power and/or raise the random access detection threshold. According to the enforcement of the invention, through determining that the number of the false accesses exceed the preset first threshold, the initial access power of the user equipment is raised and/or the random access detection threshold is raised, appearance of a false access is inhibited, and an access success rate of the user equipment is raised.
Description
Technical field
The embodiment of the invention relates to the communications field, more particularly, relates to a kind of accidental access method and equipment.
Background technology
In the long evolving system (Long Term Evolution is hereinafter to be referred as LTE), in order to improve the availability of frequency spectrum, generally adopt the identical networking mode, frequency is multiplexing fully between neighbor cell.
LTE has defined three kinds of up channels: Physical Uplink Shared Channel (Physical Uplink Shared Channel, hereinafter to be referred as PUSCH), Physical Uplink Control Channel (Physical Uplink Control Channel, hereinafter to be referred as PUCCH) and Physical Random Access Channel (Physical Random Access Channel is hereinafter to be referred as PRACH).Two kinds of uplink reference signals have also been defined in addition: demodulated reference signal (Demodulation Reference Signal is hereinafter to be referred as DMRS) and detection reference signal (Sounding Reference Signal is hereinafter to be referred as SRS).The PUSCH channel is used for transmitting uplink data, the up signaling transmission of PUCCH channel user, and PRACH is used for subscriber equipment (User Equipment is hereinafter to be referred as UE) and inserts at random.DMRS is used for measurement and the demodulation relevant with PUSCH and PUCCH, and SRS then is used to measure uplink channel information.
In LTE, the initialization that RACH is mainly used in UE inserts, and it does not carry the Any user data, and RACH sends by Physical Random Access Channel (PRACH).The signal that UE sends on the PRACH channel is targeting sequencing (Preamble Sequence is hereinafter to be referred as Preamble).Targeting sequencing is Zadoff-Chu sequence (hereinafter to be referred as the ZC sequence).
UE can send the SRS signal to the base station according to the configuration cycle property ground of base station after access, because SRS also is the ZC sequence, can produce and disturb the signal of adjacent area (as PRACH etc.) under specific circumstances, the neighbor base station of promptly receiving this SRS signal takes for this UE request and inserts.
UE sends the PRACH sequence according to the running time-frequency resource of base station configuration, and the base station is gone periodically to detect according to identical configuration, uses local sequence relevant with received signal, whether surpasses detection threshold by detection peak and has judged whether that the user needs to insert.Because the setting of detection threshold is to obtain under emulation according to certain channel model, but in real system, may exist the interference (the SRS signal that sends as adjacent area UE etc.) of beyong contemplation, so always exist the probability that certain falseness inserts in the real system, promptly may detect not is the user who really needs access, for example UE of adjacent area.When existing a large amount of falsenesses to insert, the access success rate of UE can descend.
Summary of the invention
The embodiment of the invention one of them technical problem to be solved is to suppress the sub-district internal cause to disturb the false access of the subscriber equipment that causes, and improves subscriber equipment and initially inserts success rate.
According to the embodiment of the invention, a kind of accidental access method has been proposed, it is characterized in that described method comprises:
According to inserting detection threshold at random, judge whether subscriber equipment initiates to insert at random;
If judged result is for thinking that subscriber equipment initiated at random to insert, then to described subscriber equipment transmission accidental access response;
Whether judgement receives the wireless resource control connection request that described subscriber equipment sends after sending described accidental access response;
If do not receive the wireless resource control connection request that described subscriber equipment sends, determine that then described subscriber equipment is false the access, and the false quantity that inserts that adds up;
When the access of the falseness after described the adding up quantity surpassed the first default thresholding, the subscriber equipment in the notifying cell improved initial access power, and/or, improve the described detection threshold that inserts at random.
According to the embodiment of the invention, a kind of base station has been proposed, it is characterized in that described base station comprises:
First judging unit is used for judging according to inserting detection threshold at random whether subscriber equipment initiates to insert at random;
Transmitting element is used in the described judged result of first judging unit sending accidental access response to described subscriber equipment when thinking that subscriber equipment has initiated to insert at random;
Second judging unit is used for judging after described transmitting element sends described accidental access response, whether receives the wireless resource control connection request that described subscriber equipment sends;
The unit that adds up is used for during for the wireless resource control connection request that do not receive described subscriber equipment and send, determining that described subscriber equipment inserts for false in the result of described second judgment unit judges, and the false quantity that inserts that adds up;
Control unit, when being used for falseness after the described unit that adds up adds up and inserting quantity and surpass the first default thresholding, the subscriber equipment in the notifying cell improves initial access power, and/or, improve the described detection threshold that inserts at random.
According to the embodiment of the invention, the falseness that adds up by judgement inserts quantity above first thresholding, therefore and improve the initial access power of subscriber equipment and/or improve and insert detection threshold at random, can suppress the false appearance that inserts and improve the access success rate of subscriber equipment.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, 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.In the accompanying drawings:
Fig. 1 is the Signalling exchange figure in the random access procedure;
Fig. 2 is the flow chart of embodiment of the invention method;
Fig. 3 is the flow chart of a kind of concrete scheme of embodiment of the invention method;
Fig. 4 is the flow chart of the another kind of concrete scheme of embodiment of the invention method;
Fig. 5 is the schematic configuration diagram of the base station of the embodiment of the 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 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.
Subscriber equipment (UE, User Equipment), also can be referred to as portable terminal (Mobile Terminal), mobile subscriber equipment etc., can be (for example through wireless access network, RAN, Radio Access Network) communicates with one or more core net, subscriber equipment can be a portable terminal, as mobile phone (or being called " honeycomb " phone) with have the computer of portable terminal, for example, can be portable, pocket, hand-hold type, mobile device built-in computer or vehicle-mounted, they and wireless access network exchange language and/or data.
The base station can be the evolved base station (eNB or e-NodeB, evolutional Node B) among the LTE.
Usually, the base station is by system message (System Information Block, be called for short " SIB ") broadcasting user equipment (User Equipment, be called for short " UE ") initial access power, UE regulates the power that it sends lead flag (Preamble ID) according to descending path loss, and the power when guaranteeing that each UE arrives base station is basic identical.In general, the base station uses fixing detection threshold to detect user's access situation, the UE initial access power is not regulated, and just according to the disposal ability of system, the user who exceeds specification is directly abandoned.Behind the UE access failure first time, UE can improve transmitting power to be attempted inserting once more.
For solving problems of the prior art, the embodiment of the invention provides multiple implementation, specifically describes as follows.
Fig. 1 is the Signalling exchange figure that accidental access method relates to.As shown in Figure 1, UE sends random access leader sequence to eNB.ENB can send accidental access response to UE after receiving the random access leader sequence that UE sends.If real UE sends the request that inserts at random, then UE can return wireless resource control connection request (Radio Resource Control Connection Request is called for short RRC Connection Request).ENB can judge that in view of the above this time inserting request at random is access at random really.On the contrary, under the situation of not receiving RRC Connection Request, eNB thinks that then this time inserting at random is false the access.
Fig. 2 is the flow chart of the accidental access method 200 of the embodiment of the invention.As shown in Figure 2,
210: the base station judges according to inserting detection threshold at random whether subscriber equipment initiates to insert at random;
Generally speaking, the base station is handed down to UE by SIB message with the UE initial access power.UE sends the request that inserts at random according to this initial access power to the base station, and this inserts request at random and shows as the ZC sequence.The base station is carried out relevant treatment and other processing with local with reference to the root sequence with it after receiving the ZC of the access at random sequence that UE sends, handle peakedness ratio in the corresponding window in back and insert the detecting gate limit for height at random and think that then the request that inserts is at random arranged, will be higher than the access at random that inserts detection threshold at random simultaneously and report the base station high level and carry out subsequent treatment.In this course, because the interference signal that the UE of adjacent area sends also is the ZC sequence, when this interference signal was strong, the base station may think that the UE of this adjacent area also initiates to insert at random request.
220: if judged result is for thinking that subscriber equipment initiated at random to insert, then to described subscriber equipment transmission accidental access response.
230: judge after sending described accidental access response whether receive the wireless resource control connection request that described subscriber equipment sends.
240: if do not receive the wireless resource control connection request that described subscriber equipment sends, determine that then described subscriber equipment is false the access, and the false quantity that inserts that adds up.
Whether the base station receives the RRC Connection Request that UE sends behind the accidental access response and determines whether the access at random of UE is false the access according to issuing, if false the access, the false quantity that inserts then adds up.
250: when the access of the falseness after described the adding up quantity surpassed the first default thresholding, the subscriber equipment in the notifying cell improved initial access power, and/or, improve the described detection threshold that inserts at random.
According to the embodiment of the invention, when the falseness access quantity that adds up surpasses the first default thresholding, can improve the described detection threshold that inserts at random.In this case, the peak value that the lower falseness of most of power inserts the ZC sequence will be lower than and insert detection threshold at random, and the base station will not think that these ZC sequences for inserting request, therefore can effectively reduce the false quantity that inserts.Meanwhile, the request of access first of a part of UE is failed because of inserting the detection threshold raising at random, and in this case, UE can improve access power automatically and send the request of access once more, therefore can successfully insert follow-up.
According to the embodiment of the invention, also can be when raising insert detection threshold at random, notice UE improves initial access power.In this case, the base station can notify UE to improve initial access power by dual mode.A kind of is to send a notification message by the UE in the sub-district, notifies the subscriber equipment in the described sub-district to improve initial access power by this notification message.Another kind is the initial access power after the base station can be improved by the UE broadcasting of SIB message in the sub-district.
According to the embodiment of the invention, the falseness that adds up by judgement inserts quantity above first thresholding, therefore and improve the initial access power of subscriber equipment and/or improve and insert detection threshold at random, can suppress the false appearance that inserts and improve the access success rate of subscriber equipment.
According to the embodiment of the invention, improve under the situation of initial access power at the described subscriber equipment that inserts at random in detection threshold and the notifying cell of raising synchronously, the subscriber equipment in the described notifying cell improves the amplitude of initial access power and sets according to the described increase rate that inserts detection threshold at random.
According to the embodiment of the invention, subscriber equipment in notifying cell improves before the initial access power, whether the initial access power of judging described subscriber equipment has been adjusted to the default initial access power upper limit, if the result of described judgement is not, then the subscriber equipment in the notifying cell improves initial access power.
According to the embodiment of the invention, when described false access quantity was lower than preset second threshold, the subscriber equipment in the notifying cell reduced initial access power, and/or, reduce the described detection threshold that inserts at random.According to the embodiment of the invention, alternatively, when the falseness access that adds up was lower than preset second threshold, the UE in the notifying cell reduced the described detection threshold that inserts at random.In this case, can improve the success rate that UE inserts first.According to the embodiment of the invention, also can reduce described insert detection threshold at random in, notice UE reduces initial access power.Employed power in the time of can reducing UE like this and insert at random, and therefore reduce the power consumption of UE and UE interference to neighbor cell.
Equally, the base station can notify UE to reduce initial access power by dual mode.A kind of is to send a notification message by the UE in the sub-district, notifies the subscriber equipment in the described sub-district to reduce initial access power by this notification message.Another kind is the initial access power after the base station can reduce by the UE broadcasting of SIB message in the sub-district.
According to the embodiment of the invention, reduce under the situation of initial access power at the described subscriber equipment that inserts at random in detection threshold and the notifying cell of reduction synchronously, the subscriber equipment in the described notifying cell reduces the amplitude of initial access power and sets according to the described reduction amplitude that inserts detection threshold at random.
According to the embodiment of the invention, subscriber equipment in notifying cell reduces before the initial access power, whether the initial access power of judging described subscriber equipment has been adjusted to default initial access power lower limit, if the result of described judgement is not, then the subscriber equipment in the notifying cell reduces initial access power.
Further set forth the principle of the embodiment of the invention below in conjunction with the specific implementation of the embodiment of the invention.Fig. 3 is the flow chart of the accidental access method of the embodiment of the invention.As shown in Figure 3,
310:eNB eats dishes without rice or wine to issue the UE initial access power.
320:eNB judges according to inserting detection threshold at random whether UE initiates to insert at random.Initiate to insert at random if judged result is UE, then execution in step 330.
330:eNB sends accidental access response to UE.
340:eNB judges after sending described accidental access response whether receive the RRC Connection Request that UE sends.
If receive the RRC Connection Request that UE sends, then eNB thinks that this time access then is back to step 320 for inserting at random really.If do not receive the RRC Connection Request that UE sends, then determine this time to insert and insert execution in step 350 to false.
350: the false quantity that inserts adds up;
360: judge whether to surpass the predetermined detection cycle (as 1 minute), if judged result is for surpassing the predetermined detection cycle, then execution in step 370.
370: judge that the falseness that adds up inserts quantity and whether surpasses default first thresholding (for example, 100 times).If surpass this first default thresholding, then sense cycle is reset and returned step 320.If judged result is for surpassing this first default thresholding, then execution in step 380.
380: judge whether initial access power (for example-10dmb) surpasses the default initial access power upper limit.If judged result is for reaching the described default initial access power upper limit, then reporting base station high level and method finish.If judged result is not for to reach the described default initial access power upper limit, then execution in step 390.
390: initial access power is improved a step-length, and (for example, 2db), the described step-length of detection threshold that inserts at random simultaneously raises.As previously mentioned, the step-length amplitude that inserts the detection threshold rising at random can be determined according to the rising step-length amplitude of initial access power.
ENB can be by the initial access power after the new raising of the UE broadcasting of SIB message in the sub-district.
According to the embodiment of the invention, by judging after sending described accidental access response, whether receive RRC Connection Request that UE sends and determine whether to be truly the inserting at random of UE, guaranteed the reliability of judged result; The false quantity that inserts that adds up in default sense cycle can keep the stability of system, avoids initial access power to change continually; By the initial access power after the new raising of the UE broadcasting of SIB message in the sub-district, can unify to improve the initial access power after the new raising of all UE uses in the sub-district easily; Before the initial access power that improves UE, judge whether initial access power has been adjusted to the default initial access power upper limit, and a kind of protection mechanism can be provided, cause the system failure in order to avoid initial access power is too high or damage UE; Improve initial access power by the step-length that can preset, allow system is controlled accurately; Inserting the step-length amplitude of detection threshold rising at random can determine according to the rising step-length amplitude of initial access power, can improve and insert the stability that detection threshold is adjusted at random.
Fig. 4 is the flow chart of the another kind of specific implementation of the embodiment of the invention, as shown in Figure 4:
410:eNB eats dishes without rice or wine to issue the UE initial access power.
420:eNB judges according to inserting detection threshold at random whether UE initiates to insert at random.Initiate to insert at random if judged result is UE, then execution in step 430.
430:eNB sends accidental access response to UE.
440:eNB judges after sending described accidental access response whether receive the RRC Connection Request that UE sends.If receive the RRC Connection Request that UE sends, then eNB thinks that this time access then is back to step 420 for inserting at random really.If do not receive the RRC Connection Request that UE sends, then determine this time to insert and insert execution in step 450 to false.
450: the false quantity that inserts adds up;
460: judge whether to surpass the predetermined detection cycle (as 1 minute).If judged result is for surpassing the predetermined detection cycle, then execution in step 470.
470: judge that the falseness that adds up inserts quantity and whether is lower than preset second threshold (for example, 10 times).If surpass this preset second threshold, then sense cycle is reset and returned step 420.If judged result is for being lower than this preset second threshold, then execution in step 480.
480: judge whether initial access power (for example-25dmb) is lower than default initial access power lower limit.If judged result is for reaching described default initial access power lower limit, then method finishes, and does not deal with.If judged result is not for to reach described default initial access power lower limit, then process advances to 490.
490: initial access power is reduced a step-length (for example, 2db), reduce the described step-length of detection threshold that inserts at random simultaneously.As previously mentioned, the step-length amplitude that inserts the detection threshold reduction at random can be determined according to the reduction step-length amplitude of initial access power.
ENB can be by the initial access power after the new reduction of the UE broadcasting of SIB message in the sub-district.
According to the embodiment of the invention, by judging after sending described accidental access response, whether receive RRC Connection Request that UE sends and determine whether to be truly the inserting at random of UE, guaranteed the reliability of judged result; The false quantity that inserts that adds up in default sense cycle can keep the stability of system, avoids initial access power to change continually; By the initial access power after the new reduction of the UE broadcasting of SIB message in the sub-district, can unify to reduce the initial access power after the new reduction of all UE uses in the sub-district easily; Before the initial access power that reduces UE, judge whether initial access power has been adjusted to default initial access power lower limit, can provide a kind of protection mechanism, in order to avoid initial access power is crossed low and cause the system failure or UE can't realize effectively inserting at random; Reduce initial access power by the step-length that can preset, allow system is controlled accurately; Insert the step-length amplitude of detection threshold reduction at random and determine, can improve and insert the stability that detection threshold is adjusted at random according to the reduction step-length amplitude of initial access power.
The Fig. 3 and the embodiment of the invention shown in Figure 4 can combine, and constitute the another kind of embodiment of the present invention, according to the falseness access quantity that adds up and the comparison of first thresholding and second thresholding, correspondingly improve or reduce the initial access power of UE respectively.On this basis, can improve or reduce the described detection threshold that inserts at random.
According to the embodiment of the invention, first thresholding can be more than or equal to second thresholding.
The embodiment of the invention has also proposed a kind of base station that is used for realizing the accidental access method of the embodiment of the invention, as shown in Figure 5.Fig. 5 is the schematic configuration diagram of base station 500 in the LTE system.
Go for the base station of the embodiment of the invention according to the described feature of method part of the embodiment of the invention.
According to the embodiment of the invention, the false quantity that inserts added up in the preset detection cycle (as 1 minute) in the unit 540 that adds up.When the falseness access quantity after the unit 540 that adds up adds up surpassed default first thresholding (for example, 100 times), the subscriber equipment in control unit 550 notifying cells improved initial access power.
Specifically, according to the embodiment of the invention, control unit 550 is used for by the initial access power after the subscriber equipment broadcasting raising of SIB message in described sub-district.Alternatively, control unit 550 also can send a notification message to the subscriber equipment in the described sub-district, notifies the subscriber equipment in the described sub-district to improve initial access power by described notification message.
According to the embodiment of the invention, when improving initial access power, control unit 550 can improve initial access power a step-length, and (for example, 2db), the described step-length of detection threshold that inserts at random simultaneously raises.
The further embodiment according to the present invention, improve under the situation of initial access power synchronously improving the described subscriber equipment that inserts at random in detection threshold and the notifying cell, the amplitude that the subscriber equipment in the described notifying cell improves initial access power inserts the increase rate of detection threshold at random and is set by described control unit according to described.
According to the embodiment of the invention, alternatively, the subscriber equipment that control unit 550 also is used in notifying cell improves before the initial access power, whether the initial access power of judging described subscriber equipment has been adjusted to the default initial access power upper limit, if the result of described judgement is for denying the subscriber equipment raising initial access power in then described control unit 550 notifying cells.
The further embodiment according to the present invention, control unit 550 also is used for when described false access quantity is lower than preset second threshold (for example, 10 times), and the subscriber equipment in the notifying cell reduces initial access power, and/or, reduce the described detection threshold that inserts at random.
According to the embodiment of the invention, control unit 550 is used for by the initial access power after the subscriber equipment broadcasting reduction of SIB message in described sub-district.Alternatively, control unit 550 also can send a notification message to the subscriber equipment in the described sub-district, notifies the subscriber equipment in the described sub-district to reduce initial access power by described notification message.
According to the embodiment of the invention, when reducing initial access power, control unit 550 can reduce initial access power a step-length and (for example, 2db), reduce the described step-length of detection threshold that inserts at random simultaneously.
The further embodiment according to the present invention, reduce under the situation of initial access power synchronously reducing the described subscriber equipment that inserts at random in detection threshold and the notifying cell, the amplitude that the subscriber equipment in the described notifying cell reduces initial access power inserts the reduction amplitude of detection threshold at random and is set by described control unit 550 according to described.
According to the embodiment of the invention, alternatively, the subscriber equipment that control unit 550 also is used in notifying cell reduces before the initial access power, whether the initial access power of judging described subscriber equipment has been adjusted to default initial access power lower limit, if the result of described judgement is for denying the subscriber equipment reduction initial access power in the then described control unit notifying cell.
One of ordinary skill in the art will appreciate that method and system disclosed herein only is an exemplary in nature, and the process that method comprised is not limited to the order described in the literary composition, but can adjusts according to the convenience that concrete needs and technology realize.Except the above-mentioned content that exemplifies, according to the needs of concrete application scenario, described method and system can also comprise other processes and module.
Those of ordinary skills can recognize, the unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, the composition and the step of each example described prevailingly according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each specific should being used for, but this realization should not thought and exceeds scope of the present invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
Although illustrated and described some embodiments of the present invention, it will be understood by those skilled in the art that without departing from the principles and spirit of the present invention can carry out various modifications to these embodiment, such modification should fall within the scope of the present invention.
Claims (14)
1. an accidental access method is characterized in that, described method comprises:
According to inserting detection threshold at random, judge whether subscriber equipment initiates to insert at random;
If judged result is for thinking that subscriber equipment initiated at random to insert, then to described subscriber equipment transmission accidental access response;
Whether judgement receives the wireless resource control connection request that described subscriber equipment sends after sending described accidental access response;
If do not receive the wireless resource control connection request that described subscriber equipment sends, determine that then described subscriber equipment is false the access, and the false quantity that inserts that adds up;
When the access of the falseness after described the adding up quantity surpassed the first default thresholding, the subscriber equipment in the notifying cell improved initial access power, and/or, improve the described detection threshold that inserts at random.
2. accidental access method as claimed in claim 1 is characterized in that, the subscriber equipment in the described notifying cell improves initial access power and comprises:
By the initial access power after the subscriber equipment broadcasting raising of system message in described sub-district.
3. accidental access method as claimed in claim 2, it is characterized in that, improve under the situation of initial access power at the described subscriber equipment that inserts at random in detection threshold and the notifying cell of raising synchronously, the subscriber equipment in the described notifying cell improves the amplitude of initial access power and sets according to the described increase rate that inserts detection threshold at random.
4. as each described method of claim 1 to 3, it is characterized in that described method also comprises:
Subscriber equipment in notifying cell improves before the initial access power, judges whether the initial access power of described subscriber equipment has been adjusted to the default initial access power upper limit;
If the result of described judgement is not, then the subscriber equipment in the notifying cell improves initial access power.
5. accidental access method as claimed in claim 1 is characterized in that, described method also comprises:
When the access of the falseness after described the adding up quantity was lower than preset second threshold, the subscriber equipment in the notifying cell reduced initial access power, and/or, reduce the described detection threshold that inserts at random.
6. method as claimed in claim 5 is characterized in that, the subscriber equipment in the described notifying cell reduces initial access power, comprising:
By the initial access power after the subscriber equipment broadcasting reduction of system message in described sub-district.
7. method as claimed in claim 6 is characterized in that,
Reduce under the situation of initial access power at the described subscriber equipment that inserts at random in detection threshold and the notifying cell of reduction synchronously, the subscriber equipment in the described notifying cell reduces the amplitude of initial access power and sets according to the described reduction amplitude that inserts detection threshold at random.
8. as each described method of claim 5 to 7, it is characterized in that described method also comprises:
Subscriber equipment in notifying cell reduces before the initial access power, judges whether the initial access power of described subscriber equipment has been adjusted to default initial access power lower limit;
If the result of described judgement is not, then the subscriber equipment in the notifying cell reduces initial access power.
9. a base station is characterized in that, described base station comprises:
First judging unit is used for judging according to inserting detection threshold at random whether subscriber equipment initiates to insert at random;
Transmitting element is used in the judged result of described first judging unit sending accidental access response to described subscriber equipment when thinking that subscriber equipment has initiated to insert at random;
Second judging unit is used for judging after described transmitting element sends described accidental access response, whether receives the wireless resource control connection request that described subscriber equipment sends;
The unit that adds up is used for during for the wireless resource control connection request that do not receive described subscriber equipment and send, determining that described subscriber equipment inserts for false in the result of described second judgment unit judges, and the false quantity that inserts that adds up;
Control unit, when being used for falseness after the described unit that adds up adds up and inserting quantity and surpass the first default thresholding, the subscriber equipment in the notifying cell improves initial access power, and/or, improve the described detection threshold that inserts at random.
10. base station as claimed in claim 9 is characterized in that, described control unit specifically is used for by the initial access power after the subscriber equipment broadcasting raising of system message in described sub-district.
11. as claim 9 or 10 described base stations, it is characterized in that, the subscriber equipment that described control unit also is used in notifying cell improves before the initial access power, whether the initial access power of judging described subscriber equipment has been adjusted to the default initial access power upper limit, if the result of described judgement is for denying the subscriber equipment raising initial access power in the then described control unit notifying cell.
12. base station as claimed in claim 9, it is characterized in that described control unit also is used for when described false access quantity is lower than preset second threshold, the subscriber equipment in the notifying cell reduces initial access power, and/or, reduce the described detection threshold that inserts at random.
13. base station as claimed in claim 12 is characterized in that, described control unit specifically is used for by the initial access power after the subscriber equipment broadcasting reduction of system message in described sub-district.
14. as claim 12 or 13 described base stations, it is characterized in that, the subscriber equipment that described control unit also is used in notifying cell reduces before the initial access power, whether the initial access power of judging described subscriber equipment has been adjusted to default initial access power lower limit, if the result of described judgement is for denying the subscriber equipment reduction initial access power in the then described control unit notifying cell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110244040.7A CN102256280B (en) | 2011-08-24 | 2011-08-24 | Random access method and equipment thereof |
| PCT/CN2012/080563 WO2013026408A1 (en) | 2011-08-24 | 2012-08-24 | Random access method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110244040.7A CN102256280B (en) | 2011-08-24 | 2011-08-24 | Random access method and equipment thereof |
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| WO2016003338A1 (en) * | 2014-07-02 | 2016-01-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement enabling adaptive detection of scheduling requests |
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| CN110445591A (en) * | 2012-09-26 | 2019-11-12 | 华为技术有限公司 | System and method for carrying out random access in heterogeneous communication system |
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| US20110110240A1 (en) * | 2008-02-21 | 2011-05-12 | Gunnar Bergquist | Adjustment of radio detection level for request signals based observed false detection |
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| WO2013026408A1 (en) * | 2011-08-24 | 2013-02-28 | 华为技术有限公司 | Random access method and device |
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| CN102256280B (en) | 2015-04-29 |
| WO2013026408A1 (en) | 2013-02-28 |
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