CN103535101A - Sending method, eNB and user equipment - Google Patents

Sending method, eNB and user equipment Download PDF

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Publication number
CN103535101A
CN103535101A CN201180001438.6A CN201180001438A CN103535101A CN 103535101 A CN103535101 A CN 103535101A CN 201180001438 A CN201180001438 A CN 201180001438A CN 103535101 A CN103535101 A CN 103535101A
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Prior art keywords
configured information
user equipment
prach
base station
preamble index
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CN201180001438.6A
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CN103535101B (en
Inventor
王金灵
刘文济
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H04W74/0891—Non-scheduled access, e.g. ALOHA using a dedicated channel for access for synchronized access

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Provided are a sending method, eNB and user equipment. The sending method includes: an eNB counting the load of each PRACH subframe; sending first indication information to user equipment when there are at least two PRACH subframes with different loads, with the first indication information being used for indicating at least one PRACH subframe having a load less than a preset threshold; or sending second indication information to the user equipment when there are no PRACH subframes with different loads, with the second indication information being used for indicating that the user equipment selects a PRACH subframe randomly with equal probability. The present invention can balance the load of the PRACH resource and maximize the capacity of the PRACH.

Description

Sending method, eNB and user equipment
Sending method, base station and user equipment technical field
The present invention relates to communication technical field, more particularly to a kind of sending method, base station and user equipment.Background technology
Stochastic accessing is user equipment in mobile communication system（User Equipment, UE) set up uplink synchronous and the very important process connected with base station (evolved NodeB, eNB).Stochastic accessing is divided into initial random access and non-initial Stochastic accessing.
Wherein, non-initial Stochastic accessing includes switching（Handover, HO) triggering Stochastic accessing and physical downlink control channel commands (Physical Downlink Control Channel Order, PDCCH Order) triggering Stochastic accessing.For the HO Stochastic accessings triggered and the Stochastic accessing of PDCCH Order triggerings, eNB can refer in HO signalings and PDCCH Order signalings determines Physical Random Access Channel（Physical Random Access Channel, PRACH) mask index（PRACH Mask Index) and preamble index（Preamble Index), such UE need not reselect Preamble Index and PRACH resources, directly can be accessed using the PRACH Mask Index resources specified and eNB the Preamble Index specified.
In process of the present invention is realized, inventor has found：In Long Term Evolution（Long Term Evolution, LTE) time division duplex（Time Division Duplexing, TDD) under standard, the Stochastic accessing that the eNB such as existing HO and PDCCH Order is initiated can produce the unbalanced problem of PRACH resource loads.The content of the invention
The present invention provides a kind of sending method, base station and user equipment, to solve the unbalanced problem of PRACH resource loads that existing Stochastic accessing is produced.
An aspect of of the present present invention provides a kind of sending method, including： Base station counts the load of each Physical Random Access Channel PRACH subframes；
When in the presence of at least two loads different PRACH subframes, the base station sends the first configured information to user equipment, and first configured information is used to indicate to load at least one PRACH subframe less than predetermined threshold；Or,
When in the absence of different PRACH subframes are loaded, the base station sends the second configured information to user equipment, and second configured information is used to indicate the random equiprobability selection PRACH subframes of the user equipment.
Another aspect of the present invention also provides a kind of sending method, including：
User equipment receives the signaling that base station is sent；
When the signaling carries the first configured information, whether determine the base station is that the user equipment specifies preamble index, if not, the random equiprobability of user equipment selects the preamble index of the user equipment, and the preamble index of the user equipment is sent in the Physical Random Access Channel PRACH subframes that first configured information is specified, wherein, first configured information is used at least one PRACH subframe that given load is less than predetermined threshold；Or,
When the signaling carries the second configured information, whether determine the base station is that the user equipment specifies preamble index, if, the user equipment is random in effective PRACH subframes equiprobably to select a PRACH subframe, and send the preamble index that the base station is specified for the user equipment using the PRACH subframes of selection, wherein, second configured information is used to indicate the random equiprobability selection PRACH subframes of the user equipment.
Another aspect of the present invention also provides a kind of base station, including：
Statistic unit, the load for counting each Physical Random Access Channel PRACH subframes；Transmitting element, for when in the presence of at least two loads different PRACH subframes, the first configured information to be sent to user equipment, first configured information is used to indicate to load at least one PRACH subframe less than predetermined threshold；Or, when in the absence of different PRACH subframes are loaded, the second configured information is sent to user equipment, second configured information is used to indicate the random equiprobability selection PRACH subframes of the user equipment. Another aspect of the present invention also provides a kind of user equipment, including：
Receiving unit, the signaling for receiving base station transmission；
Determining unit, for when the signaling carries the first configured information or the second configured information, determining whether the base station is that the user equipment specifies preamble index；
Selecting unit, for when the signaling carries the first configured information, after the determining unit determines the base station not for the specified preamble index of the user equipment, random equiprobability to select the preamble index of the user equipment；Or, when the signaling carry the second configured information when, the determining unit determine the base station for the user equipment specify preamble index after, effective
It is random in PRACH subframes equiprobably to select a PRACH subframe；
Transmitting element, for when the signaling carries the first configured information, in the described first preamble index for indicating credit household's equipment, wherein, first configured information is used at least one PRACH subframe that given load is less than predetermined threshold；Or, when the signaling carries the second configured information, it is the preamble index that the user equipment is specified that the PRACH subframes selected using the selecting unit, which send the base station, wherein, second configured information is used to indicate the random equiprobability selection PRACH subframes of the user equipment.
In above-mentioned technical proposal, when in the presence of at least two loads different PRACH subframes, base station is sent for indicating first configured information of the load less than at least one PRACH subframe of predetermined threshold to user equipment, user equipment is sent preamble index in the subframe that the first configured information is indicated；So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings. The method flow diagram that Fig. 1 provides for one embodiment of the present of invention；
The method flow diagram that Fig. 2 provides for an alternative embodiment of the invention；
The method flow diagram that Fig. 3 provides for yet another embodiment of the present invention；
The method flow diagram that Fig. 4 provides for another embodiment of the present invention；
The base station schematic diagram that Fig. 5 provides for one embodiment of the present of invention；
The base station schematic diagram that Fig. 6 provides for an alternative embodiment of the invention；
The user equipment schematic diagram that Fig. 7 provides for one embodiment of the present of invention.Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made belongs to the scope of protection of the invention.
The method flow diagram that Fig. 1 provides for one embodiment of the present of invention, as shown in figure 1, this method can include：
Step 101, base station counts the load of each PRACH subframes.
Step 102, when in the presence of at least two loads different PRACH subframes, base station sends the first configured information to UE, and first configured information is used to indicate to load at least one PRACH subframe less than predetermined threshold；Or, when in the absence of different PRACH subframes are loaded, base station sends the second configured information to UE, and second configured information is used to indicate the random equiprobability selection PRACH subframes of above-mentioned UE.
In above-mentioned steps 101, base station may further determine whether there is the different PRACH subframes of at least two loads, and according to different judged results, base station can select to perform the different disposal in step 102, that is, send different information.
In the present embodiment, base station is sent to user equipment before the first configured information, and base station can be selected Load is less than at least one PRACH subframe of predetermined threshold, and the corresponding PRACH resource numbers of at least one PRACH subframe for being less than predetermined threshold according to above-mentioned load set above-mentioned first configured information.Specifically, above-mentioned first configured information can be PRACH masks index.
In a kind of implementation of the present embodiment, the first configured information and the 3rd configured information are carried in same signaling, and above-mentioned 3rd configured information is used to indicate that preamble index is not specified in base station for UE.
In another implementation of the present embodiment, the second configured information and the 4th configured information are carried in same signaling, and above-mentioned 4th configured information is used to indicate that preamble index is specified in base station for UE.Wherein, the second configured information indexes for PRACH masks, and the value of the second configured information is different from the value of the first configured information.For example, the value of the second configured information can be " 0 ", and the value of the first configured information can be positive integer.
In above-described embodiment, when in the presence of at least two loads different PRACH subframes, base station is sent for indicating first configured information of the load less than at least one PRACH subframe of predetermined threshold to UE, above-mentioned UE is sent preamble index in the subframe that the first configured information is indicated；So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.
The method flow diagram that Fig. 2 provides for an alternative embodiment of the invention, as shown in Fig. 2 this method can include：
Step 201, UE receives the signaling that base station is sent.
Step 202, when above-mentioned signaling carries the first configured information, whether determine base station is that above-mentioned UE specifies preamble index, if not, the random equiprobability of the UE selects the preamble index of the UE, and the preamble index of the UE is sent in the PRACH subframes that the first configured information is specified, wherein, the first configured information is used at least one PRACH subframe that given load is less than predetermined threshold；Or, when above-mentioned signaling carries the second configured information, whether determine base station is that above-mentioned UE specifies preamble index, if, the UE is random in effective PRACH subframes equiprobably to select a PRACH subframe, and the preamble index that base station is specified for the UE is sent using the PRACH subframes of selection, wherein, the second configured information is used to indicate the random equiprobability selection PRACH subframes of UE. Specifically, in the present embodiment, when above-mentioned signaling carries the first configured information, if above-mentioned signaling also carries the 3rd configured information, then UE can determine base station and not specify preamble index for the UE, wherein, above-mentioned 3rd configured information is used to indicate that preamble index is not specified in base station for the UE.In the present embodiment, above-mentioned first configured information can be PRACH masks index, and the 3rd configured information can be preamble index.
When above-mentioned signaling carries the second configured information, if above-mentioned signaling also carries the 4th configured information, UE can determine base station and specify preamble index for the UE, and above-mentioned 4th configured information is used to indicate that preamble index is specified in base station for the UE.In the present embodiment, the second configured information indexes for PRACH masks, and the value of the second configured information is different from the value of the first configured information；4th configured information is preamble index, and the value of the 4th configured information is different from the value of the 3rd configured information.For example, the value of the second configured information can be " 0 ", and the value of the first configured information can be positive integer.The value of 3rd configured information can be " 0 ", and the value of the 4th configured information can be positive integer.
In above-described embodiment, UE is received after the signaling of base station transmission, and the UE can send preamble index in the PRACH subframes that the first configured information is indicated；So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.
In the following description of the present invention, using base station as eNB, above-mentioned signaling is to illustrate exemplified by HO signalings or PDCCH Order signalings.
The method flow diagram that Fig. 3 provides for yet another embodiment of the present invention, as shown in figure 3, this method can include：
Step 301, eNB counts the load of each PRACH subframes.
Specifically, eNB can be at the time of the cell that the eNB is serviced starts, the load of each PRACH subframes is counted.
The mode that the embodiment of the present invention counts the load of each PRACH subframes to eNB is not construed as limiting, as long as the load of each PRACH subframes can be counted.
Step 302, when in the presence of at least two loads different PRACH subframes, the selected loads of eNB are small In at least one PRACH subframe of predetermined threshold, the corresponding PRACH resource numbers of at least one PRACH subframe for being less than predetermined threshold according to above-mentioned load set the first configured information.
Specifically, above-mentioned first configured information is used to indicate at least one the PRACH subframe of load less than predetermined threshold, and above-mentioned first configured information can be PRACH masks index, and the value of the first configured information can be positive integer.For example：When the value of the first configured information is 1 ~ 6, first configured information indicates a unique PRACH subframe；When the value of the first configured information is 11, first configured information indicates the PRACH subframes that PRACH resource numbers are even number；When the value of the first configured information is 12, first configured information indicates the PRACH subframes that PRACH resource numbers are odd number.
For example, under the proportioning 1 of TDD standards, the numbering of up PRACH subframes is 2,3,7 and 8, and the corresponding PRACH resource numbers of the PRACH subframes that numbering is 2,3,7 and 8 are respectively 0,1,2 and 3;The loading condition in PRACH subframes counted according to eNB, it is found that the load for the PRACH subframes that numbering is 3 is less than predetermined threshold, then PRACH masks index can be set into 2, for specifying the PRACH subframes that numbering is 3（Specify the PRACH resources that PRACH resource numbers are 1）.
Wherein, above-mentioned predetermined threshold can be not construed as limiting according to actual conditions sets itself, the embodiment of the present invention to this.
It these are only that the present invention sets the example of the first configured information, the embodiment of the present invention is not limited to that, the embodiment of the present invention is not construed as limiting to the mode for setting the first configured information, as long as the first configured information can indicate at least one the PRACH subframe of load less than predetermined threshold.
Step 303, when in the absence of different PRACH subframes are loaded, eNB sets the second configured information.Specifically, the second configured information is used to indicate the random equiprobability selection PRACH subframes of above-mentioned UE, and above-mentioned second configured information can be PRACH masks index, and the value of the second configured information is different from the value of the first configured information.In the present embodiment, the value of the second configured information can be " 0 ".
It these are only that the present invention sets the example of the second configured information, the embodiment of the present invention is not limited to that, the embodiment of the present invention is not construed as limiting to the mode for setting the second configured information, as long as the second configured information can indicate the random equiprobability selection PRACH subframes of above-mentioned UE. In the present embodiment, step 302 selects an execution with step 303.
Step 304, eNB sends signaling to UE, and the signaling carries the first configured information or the second configured information.
In the present embodiment, above-mentioned signaling can be HO signalings or PDCCH Order signalings.
Above-described embodiment can realize that UE sends preamble index in the PRACH subframes that the first configured information is indicated；So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.
The method flow diagram that Fig. 4 provides for another embodiment of the present invention, as shown in figure 4, this method can include：
Step 401, UE receives HO signalings or the PDCCH orders that eNB is sent（PDCCH Order) signaling.
Step 402, UE judges that above-mentioned HO signalings or PDCCH Order signalings are to carry the first configured information, or carries the second configured information.When above-mentioned H0 signalings or PDCCH Order signalings carry the first configured information, step 403 is performed；When above-mentioned H0 signalings or PDCCH Order signalings carry the second configured information, step 406 is performed.
Specifically, above-mentioned first configured information is used to indicate at least one the PRACH subframe of load less than predetermined threshold, and above-mentioned first configured information can be PRACH masks index, and the value of the first configured information can be positive integer.For example：When the value of the first configured information is 1 ~ 6, first configured information indicates a unique PRACH subframe；When the value of the first configured information is 11, first configured information indicates the PRACH subframes that PRACH resource numbers are even number；When the value of the first configured information is 12, first configured information indicates the PRACH subframes that PRACH resource numbers are odd number.
Second configured information is used to indicate the random equiprobability selection PRACH subframes of above-mentioned UE, and above-mentioned second configured information can be PRACH masks index, and the value of the second configured information is different from the value of the first configured information.In the present embodiment, the value of the second configured information can be " 0 ".
Step 403, UE judges whether eNB is that above-mentioned UE specifies preamble index；If eNB does not specify preamble index for UE, step 404 is performed;If eNB specifies preamble index for UE, step 405 is performed. Specifically, in the present embodiment, when above-mentioned HO signalings or PDCCH Order signalings carry the first configured information, if above-mentioned HO signalings or PDCCH Order signalings also carry the 3rd configured information, then UE can determine base station and not specify preamble index for the UE, wherein, above-mentioned 3rd configured information is used to indicate that preamble index is not specified in base station for the UE, 3rd configured information can be preamble index, and the value of the 3rd configured information can be " 0 "；When above-mentioned HO signalings or PDCCH Order signalings carry the first configured information, if above-mentioned HO signalings or PDCCH Order signalings also carry the 4th configured information, then UE can determine base station and specify preamble index for the UE, 4th configured information is used to indicate that preamble index is specified in base station for the UE, 4th configured information can be preamble index, and the 4th configured information value it is different from the value of the 3rd configured information, in the present embodiment, the value of the 4th configured information can be positive integer.
Step 404, the random equiprobability of UE selects the preamble index of the UE, and sends in the PRACH subframes that the first configured information is indicated the preamble index of the UE.
Step 405, it is the preamble index that UE is specified that UE sends eNB in the PRACH subframes that the first configured information is indicated.
Step 406, UE judges whether eNB is that the UE specifies preamble index.If it is not, then performing step 407;If eNB specifies preamble index for UE, step 408 is performed.
Specifically, in the present embodiment, when above-mentioned HO signalings or PDCCH Order signalings carry the second configured information, if above-mentioned HO signalings or PDCCH Order signalings also carry the 3rd configured information, then UE can determine base station and not specify preamble index for the UE, wherein, above-mentioned 3rd configured information is used to indicate that preamble index is not specified in base station for the UE, 3rd configured information can be preamble index, and the value of the 3rd configured information can be " 0 "；When above-mentioned HO signalings or PDCCH Order signalings carry the second configured information, if above-mentioned HO signalings or PDCCH Order signalings also carry the 4th configured information, then UE can determine base station and specify preamble index for the UE, 4th configured information is used to indicate that preamble index is specified in base station for the UE, 4th configured information can be preamble index, and the 4th configured information value it is different from the value of the 3rd configured information, in the present embodiment, 4th indicate letter, value can be positive integer. Step 407, UE randomly chooses a PRACH subframe in all effective PRACH subframes, and in continuous at least two effective PRACH subframes after the PRACH subframes of selection and the PRACH subframes of selection, equiprobably select a PRACH subframe to send the preamble index of the random equiprobability selections of above-mentioned UE at random.
Step 408, UE is random in all effective PRACH subframes equiprobably selects a PRACH subframe to send the preamble index that eNB specifies for the UE.
Above-described embodiment can realize that UE sends preamble index in the PRACH subframes that the first configured information is indicated；So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can be completed by the related hardware of programmed instruction, foregoing program can be stored in a computer read/write memory medium, the program upon execution, performs the step of including above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Base station in the base station schematic diagram that Fig. 5 provides for one embodiment of the present of invention, the present embodiment can realize the flow of Fig. 1 of the present invention and embodiment illustrated in fig. 3, as shown in figure 5, the base station can include：
Statistic unit 51, the load for counting each PRACH subframes；
Transmitting element 52, for when in the presence of at least two loads different PRACH subframes, the first configured information to be sent to UE, first configured information is used to indicate to load at least one PRACH subframe less than predetermined threshold；Or, when in the absence of different PRACH subframes are loaded, the second configured information is sent to UE, second configured information is used to indicate the random equiprobability selection PRACH subframes of above-mentioned UE.
In the present embodiment, above-mentioned first configured information can be PRACH masks index, and the value of the first configured information can be positive integer.For example：When the value of the first configured information is 1 ~ 6, first configured information indicates a unique PRACH subframe；When the value of the first configured information is 11, first configured information indicates the PRACH subframes that PRACH resource numbers are even number；When When the value of one configured information is 12, first configured information indicates the PRACH subframes that PRACH resource numbers are odd number.Above-mentioned second configured information can be PRACH masks index, and the value of the second configured information is different from the value of the first configured information.In the present embodiment, the value of the second configured information can be " 0 ".
In the present embodiment, statistic unit 51 can be the part that statistical function is realized in processor or processor；Transmitting element 52 can be the part that sending function is realized in transmitter or transceiver.
In above-mentioned base station, when in the presence of at least two loads different PRACH subframes, transmitting element 52 is sent for indicating first configured information of the load less than at least one PRACH subframe of predetermined threshold to UE, above-mentioned UE is sent preamble index in the subframe that the first configured information is indicated；So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.
The base station schematic diagram that Fig. 6 provides for an alternative embodiment of the invention, compared with the base station shown in Fig. 5, difference is, the base station shown in Fig. 6 can also include：
Selected unit 53, at least one PRACH subframe for selected load less than predetermined threshold；Setting unit 54, first configured information is set for the corresponding PRACH resource numbers of at least one PRACH subframe according to the selected load of selected unit 53 less than predetermined threshold.
In the present embodiment, selected unit 53 and setting unit 54 can realize different parts that are selected and setting function respectively in same part or processor in processor.
Above-mentioned base station can realize the load of balanced PRACH resources, make PRACH maximum capacity.
User equipment in the user equipment schematic diagram that Fig. 7 provides for one embodiment of the present of invention, the present embodiment can realize the flow of Fig. 2 of the present invention and embodiment illustrated in fig. 4, as shown in fig. 7, the user equipment can include：
Receiving unit 71, the signaling for receiving base station transmission；
Determining unit 72, for when above-mentioned signaling carries the first configured information or the second configured information, determining whether base station is that user equipment specifies preamble index； Selecting unit 73, for when above-mentioned signaling carries the first configured information, after determining unit 72 determines base station not for the specified preamble index of user equipment, random equiprobability to select the preamble index of the user equipment；Or, when above-mentioned signaling carries the second configured information, specified for user equipment in the determination of determining unit 72 base station after preamble index, equiprobably select a PRACH subframe at random in effective PRACH subframes；
Transmitting element 74, for when above-mentioned signaling carries the first configured information, the preamble index for the user equipment that selecting unit 73 is selected is sent in the PRACH subframes that the first configured information is specified, wherein, above-mentioned first configured information is used at least one PRACH subframe that given load is less than predetermined threshold；Or, when above-mentioned signaling carries the second configured information, it is the preamble index that user equipment is specified that the PRACH subframes selected using above-mentioned selecting unit 73, which send base station, wherein, above-mentioned second configured information is used for the random equiprobability selection PRACH subframes of instruction user equipment.
In the present embodiment, when determining unit 72 can work as above-mentioned the first configured information of signaling carrying, if above-mentioned signaling also carries the 3rd configured information, then determine that preamble index is not specified in base station for user equipment, wherein, above-mentioned 3rd configured information is used to indicate that preamble index is not specified in base station for user equipment.
When determining unit 72 can work as above-mentioned the second configured information of signaling carrying, if above-mentioned signaling also carries the 4th configured information, then determine above-mentioned base station and specify preamble index for user equipment, the 4th configured information is used to indicate that preamble index is specified in base station for user equipment.
In the present embodiment, above-mentioned first configured information can be PRACH masks index, and the value of the first configured information can be positive integer.For example：When the value of the first configured information is 1 ~ 6, first configured information indicates a unique PRACH subframe；When the value of the first configured information is 11, first configured information indicates the PRACH subframes that PRACH resource numbers are even number；When the value of the first configured information is 12, first configured information indicates the PRACH subframes that PRACH resource numbers are odd number.Above-mentioned second configured information can be PRACH masks index, and the value of the second configured information is different from the value of the first configured information.In the present embodiment, the value of the second configured information can be " 0 ".
Above-mentioned 3rd configured information can be preamble index, and the value of the 3rd configured information can be " 0 "； Above-mentioned 4th configured information can be preamble index, and the value of the 4th configured information is different from the value of the 3rd configured information, and in the present embodiment, the value of the 4th configured information can be positive integer.
In the present embodiment, receiving unit 71 can be the part that receive capabilities are realized in receiver or transceiver；Transmitting element 74 can be the part that sending function is realized in transmitter or transceiver；Determining unit 72 and selecting unit 73 can be realize respectively in same part or processor in processor determine and selection function different parts.
In above-mentioned user equipment, receiving unit 71 is received after the signaling of base station transmission, and transmitting element 74 can send preamble index in the PRACH subframes that the first configured information is indicated；So as to realize the load of balanced PRACH resources, make PRACH maximum capacity.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the unit or flow in accompanying drawing are not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the unit in device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.The unit of above-described embodiment can be merged into a unit, can also be further split into multiple subelements.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims (18)

  1. Claim
    1st, a kind of sending method, it is characterised in that including：
    Base station counts the load of each Physical Random Access Channel PRACH subframes；
    When in the presence of at least two loads different PRACH subframes, the base station sends the first configured information to user equipment, and first configured information is used to indicate to load at least one PRACH subframe less than predetermined threshold；Or,
    When in the absence of different PRACH subframes are loaded, the base station sends the second configured information to user equipment, and second configured information is used to indicate the random equiprobability selection of the user equipment
    PRACH subframes.
    2nd, the method according to claim 1, it is characterised in that the base station is sent to user equipment before the first configured information, in addition to：
    The selected load in the base station is less than at least one PRACH subframe of predetermined threshold, and the corresponding PRACH resource numbers of at least one PRACH subframe for being less than predetermined threshold according to the load set first configured information.
    3rd, method according to claim 1 or 2, it is characterised in that first configured information and the 3rd configured information are carried in same signaling, the 3rd configured information is used to indicate that preamble index is not specified in the base station for the user equipment.
    4th, the method according to claims 1 to 3 any one, it is characterised in that first configured information indexes for PRACH masks.
    5th, the method according to claim 1, it is characterised in that second configured information and the 4th configured information are carried in same signaling, the 4th configured information is used to indicate that preamble index is specified in the base station for the user equipment.
    6th, method according to claim 1 or 5, it is characterised in that second configured information is PRACH masks index, and the value of second configured information is different from the value of first configured information.
    7th, a kind of sending method, it is characterised in that including： User equipment receives the signaling that base station is sent；
    When the signaling carries the first configured information, whether determine the base station is that the user equipment specifies preamble index, if not, the random equiprobability of user equipment selects the preamble index of the user equipment, and the preamble index of the user equipment is sent in the Physical Random Access Channel PRACH subframes that first configured information is specified, wherein, first configured information is used at least one PRACH subframe that given load is less than predetermined threshold；Or,
    When the signaling carries the second configured information, whether determine the base station is that the user equipment specifies preamble index, if, the user equipment is random in effective PRACH subframes equiprobably to select a PRACH subframe, and send the preamble index that the base station is specified for the user equipment using the PRACH subframes of selection, wherein, second configured information is used to indicate the random equiprobability selection PRACH subframes of the user equipment.
    8th, method according to claim 7, it is characterised in that
    When the signaling carries the first configured information, if the signaling also carries the 3rd configured information, then the user equipment determines the base station and does not specify preamble index for the user equipment, wherein, the 3rd configured information is used to indicate that preamble index is not specified in the base station for the user equipment.
    9th, the method according to claim 7 or 8, it is characterised in that first configured information indexes for PRACH masks.
    10th, the method according to claim 7 or 8, it is characterised in that the 3rd configured information is preamble index.
    11st, method according to claim 7, it is characterised in that
    When the signaling carries the second configured information, if the signaling also carries the 4th configured information, then the user equipment determines the base station and specifies preamble index for the user equipment, and the 4th configured information is used to indicate that preamble index is specified in the base station for the user equipment.
    12nd, the method according to claim 7 or 11, it is characterised in that second configured information indexes for PRACH masks, and the value of second configured information indicates letter with described first The value of breath is different.
    13rd, the method according to claim 7 or 11, it is characterised in that the 4th configured information is preamble index, and the value of the 4th configured information is different from the value of the 3rd configured information.
    14th, a kind of base station, it is characterised in that including：
    Statistic unit, the load for counting each Physical Random Access Channel PRACH subframes；Transmitting element, for when in the presence of at least two loads different PRACH subframes, the first configured information to be sent to user equipment, first configured information is used to indicate to load at least one PRACH subframe less than predetermined threshold；Or, when in the absence of different PRACH subframes are loaded, the second configured information is sent to user equipment, second configured information is used to indicate the random equiprobability selection PRACH subframes of the user equipment.
    15th, base station according to claim 14, it is characterised in that also include：
    Selected unit, at least one PRACH subframe for selected load less than predetermined threshold；Setting unit, at least one PRACH subframe corresponding PRACH resource number setting first configured information of the load less than predetermined threshold selected according to the selected unit.
    16th, a kind of user equipment, it is characterised in that including：
    Receiving unit, the signaling for receiving base station transmission；
    Determining unit, for when the signaling carries the first configured information or the second configured information, determining whether the base station is that the user equipment specifies preamble index；
    Selecting unit, for when the signaling carries the first configured information, after the determining unit determines the base station not for the specified preamble index of the user equipment, random equiprobability to select the preamble index of the user equipment；Or, it is random in effective PRACH subframes equiprobably to select a PRACH subframe after the determining unit determines the base station and specified for the user equipment preamble index when the signaling carries the second configured information；
    Transmitting element, for when the signaling carries the first configured information, letter to be indicated described first The preamble index of user equipment, wherein, first configured information is used at least one PRACH subframe that given load is less than predetermined threshold；Or, when the signaling carries the second configured information, it is the preamble index that the user equipment is specified that the PRACH subframes selected using the selecting unit, which send the base station, wherein, second configured information is used to indicate the random equiprobability selection PRACH subframes of the user equipment.
    17th, user equipment according to claim 16, it is characterised in that
    The determining unit, specifically for when the signaling carries the first configured information, if the signaling also carries the 3rd configured information, then determine the base station and do not specify preamble index for the user equipment, wherein, the 3rd configured information is used to indicate that preamble index is not specified in the base station for the user equipment.
    18th, user equipment according to claim 16, it is characterised in that
    The determining unit, specifically for when the signaling carries the second configured information, if the signaling also carries the 4th configured information, then determine the base station and specify preamble index for the user equipment, the 4th configured information is used to indicate that preamble index is specified in the base station for the user equipment.
CN201180001438.6A 2011-08-03 2011-08-03 Sending method, base station and user equipment Active CN103535101B (en)

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CN110198564A (en) * 2018-02-26 2019-09-03 华为技术有限公司 Accidental access method, terminal and the network equipment

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US20100240377A1 (en) * 2009-02-23 2010-09-23 Andrea De Pasquale Method for providing automatic cell access control to high-priority mobile users in overload and emergency situations
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CN102036407A (en) * 2009-09-28 2011-04-27 中兴通讯股份有限公司 Method and system of realizing random access

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