CN107623947A - Base station, user equipment and its accidental access method - Google Patents
Base station, user equipment and its accidental access method Download PDFInfo
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- CN107623947A CN107623947A CN201610554194.9A CN201610554194A CN107623947A CN 107623947 A CN107623947 A CN 107623947A CN 201610554194 A CN201610554194 A CN 201610554194A CN 107623947 A CN107623947 A CN 107623947A
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Abstract
Base station, user equipment and its accidental access method, methods described include：The information of at least two groups random access resources configured is sent to user equipment, the PRACH of at least two groups random access resources is different in time domain；The downlink signaling of triggering Stochastic accessing is sent to the user equipment, Stochastic accessing is carried out in access cell to cause described in the user equipment use one of at least two groups of random access resources to be authorized in auxiliary.Above-mentioned scheme, the success rate that auxiliary authorizes Stochastic accessing in access cell can be improved.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of base station, user equipment and its accidental access method.
Background technology
Carrier aggregation (Carrier Aggregation, CA), it is to meet that single user peak rate and power system capacity carry
The requirement risen, is introduced in advanced Long Term Evolution (Long Term Evolution-Advanced, LTE-Advanced) system
One increase transmission bandwidth technology.In carrier aggregation, user equipment have a main plot (Primary Cell,
PCell), user equipment obtains the control signaling of the layers such as system message, beep-page message 3 from main plot, small supplemented by other cells are equal
Area (Secondary Cell, SCell), secondary cell can be one or more.Main plot and secondary cell are referred to as serving cell.
In practice, user equipment may be different for the timing advance (Timing Advance, TA) of different districts so that different
Serving cell may belong to different timing advance groups (Timing Advance Group, TAG).Wherein, main plot will be included
TAG be referred to as pTAG, the TAG not comprising main plot PCell is referred to as sTAG.The Radio Resource control that user equipment is sent by base station
System (Radio Resource Control, RRC) signaling can know which timing advance group is secondary cell belong to.
3GPP LTE versions 14 (R14) introduce enhanced auxiliary and authorize access (Licensed-Assisted, Access
LAA) characteristic, can support in unauthorized secondary cell to carry out transmitting uplink data on (LAA SCell).LAA SCell and
The PCell/SCell (s) of mandate may belong to different timing advance groups (Timing Advance Group, TAG).This
In the case of in order to carry out LAA SCell uplink synchronous, it is necessary to carry out Stochastic accessing on LAA SCell.UE is being transmitted
Need to carry out the right to use that LBT obtains unlicensed frequencies before.
But in the prior art user equipment may due to can not obtain in time frequency usage power can not be in LAA SCell
The upper PRACH resources using base station (eNB) distribution carry out up transmission, there are problems that Stochastic accessing is low success rate of.
The content of the invention
The technical problem that the embodiment of the present invention solves is how to improve the success rate of Stochastic accessing on LAA SCell.
To solve the above problems, the embodiments of the invention provide a kind of accidental access method of user equipment, including：Xiang Yong
Family equipment sends the information of at least two groups random access resources configured, the PRACH of at least two groups random access resources
It is different in time domain；The downlink signaling of triggering Stochastic accessing is sent to the user equipment, to cause the user equipment to use
One of described at least two groups of random access resources authorize in auxiliary and carry out Stochastic accessing in access cell.
Alternatively, the information that at least two groups random access resources configured are sent to user equipment, including：Pass through
Downlink signaling sends the information of at least two groups random access resources configured to the user equipment.
Alternatively, the downlink signaling is physical layer control signaling.
Alternatively, the downlink signaling is the RRC signaling on main plot.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
The embodiment of the present invention additionally provides the accidental access method of another user equipment, including：To the user equipment
Send the downlink signaling of triggering Stochastic accessing, the downlink signaling includes the information of at least two groups random access resources, it is described extremely
The PRACH of few two groups of random access resources is different in time domain, with cause the user equipment use described at least two groups it is random
One of access-in resource authorizes in auxiliary and carries out Stochastic accessing in access cell.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
The embodiment of the present invention additionally provides a kind of accidental access method of user equipment, including：Receive what base station was configured
The information of at least two groups random access resources, the PRACH of at least two groups random access resources are different in time domain；Using institute
The one group of random access resource stated at least two groups of random access resources carries out Stochastic accessing in auxiliary mandate cell.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
Alternatively, the information for receiving at least two groups random access resources that base station is configured, including：Receive the base
The information stood by least two groups random access resources of downlink signaling transmission.
Alternatively, the downlink signaling is physical layer control signaling.
Alternatively, the downlink signaling is the RRC signaling on main plot.
The embodiment of the present invention additionally provides a kind of accidental access method of user equipment, including：Receive touching for base station transmission
Send out the downlink signaling of Stochastic accessing；Parse the information of at least two groups random access resources from the downlink signaling, it is described extremely
The PRACH of few two groups of random access resources is different in time domain；Using parsing obtain described at least two groups of random access resources
One of auxiliary authorize access cell on carry out Stochastic accessing.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
The embodiment of the present invention additionally provides a kind of base station, including：Resource transmitting element, matched somebody with somebody suitable for being sent to user equipment
The information at least two groups random access resources put, the PRACH of at least two groups random access resources are different in time domain；The
One trigger element, suitable for sending the downlink signaling of triggering Stochastic accessing to the user equipment, to cause the user equipment to make
Authorized with one of described at least two groups of random access resources in auxiliary and carry out Stochastic accessing in access cell.
Alternatively, the resource transmitting element, suitable for by downlink signaling to the user equipment send configured to
The information of few two groups of random access resources.
Alternatively, the downlink signaling is physical layer control signaling.
Alternatively, the downlink signaling is the RRC signaling on main plot.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
The embodiment of the present invention additionally provides a kind of base station, including：Second trigger element, suitable for being sent to the user equipment
Triggering the downlink signaling of Stochastic accessing, the downlink signaling includes the information of at least two groups random access resources, and described at least two
The PRACH of group random access resource is different in time domain, to cause at least two groups of Stochastic accessings described in the user equipment use
One of resource authorizes in auxiliary and carries out Stochastic accessing in access cell.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
The embodiment of the present invention additionally provides a kind of user equipment, including：First receiving unit, configured suitable for receiving base station
At least two groups random access resources information, the PRACH of at least two groups random access resources is different in time domain；First
Stochastic accessing unit, one group of random access resource being adapted in use at least two groups of random access resources authorize small in auxiliary
Stochastic accessing is carried out in area.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
Alternatively, first receiving unit, pass through suitable for receiving the base station at least two described in downlink signaling transmission
The information of group random access resource.
Alternatively, the downlink signaling is physical layer control signaling.
Alternatively, the downlink signaling is the RRC signaling on main plot.
The embodiment of the present invention additionally provides a kind of user equipment, including：Second receiving unit, suitable for receiving base station transmission
Trigger the downlink signaling of Stochastic accessing；Resolution unit, suitable for parsing at least two groups of Stochastic accessing moneys from the downlink signaling
The information in source, the PRACH of at least two groups random access resources are different in time domain；Second Stochastic accessing unit, suitable for making
One of at least two groups of random access resources authorize in auxiliary and carry out Stochastic accessing in access cell described in parsing obtains.
Alternatively, before random access resource described in every group includes PRACH time domains and frequency domain information and corresponding Stochastic accessing
The information that dragline draws.
Compared with prior art, technical scheme has the following advantages that：
Above-mentioned scheme, it is that user equipment distributes at least two groups of random access resources different in time domain by base station,
So that user equipment when receiving the signaling of triggering Stochastic accessing of base station, can use at least two groups of Stochastic accessings to provide
Any group of random access resource that can be used in source, authorized in auxiliary and carry out Stochastic accessing in access cell, use can be improved
Family equipment authorizes the success rate of Stochastic accessing in access cell in auxiliary, lifts the usage experience of user.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the accidental access method of user equipment in the embodiment of the present invention；
Fig. 2 is a kind of signaling process figure of the accidental access method of user equipment in the embodiment of the present invention；
Fig. 3 is the signaling process figure of the accidental access method of another user equipment in the embodiment of the present invention；
Fig. 4 is a kind of structural representation of base station in the embodiment of the present invention；
Fig. 5 is a kind of structural representation of user equipment in the embodiment of the present invention；
Fig. 6 is the structural representation of another base station in the embodiment of the present invention；
Fig. 7 is the structural representation of another user equipment in the embodiment of the present invention.
Embodiment
To solve the above-mentioned problems in the prior art, the technical scheme that the embodiment of the present invention uses is by base station for use
Family equipment distributes at least two groups of random access resources different in time domain so that user equipment receive the triggering of base station with
During the signaling of machine access, any group of Stochastic accessing that can be used at least two groups of random access resources can be used to provide
Source, authorized in auxiliary and carry out Stochastic accessing in access cell, it is random in auxiliary mandate access cell that user equipment can be improved
The success rate of access, lift the usage experience of user.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Fig. 1 shows a kind of flow chart of the accidental access method of user equipment in the embodiment of the present invention.As shown in Figure 1
User equipment accidental access method, the steps can be included：
Step S101：The information of at least two groups random access resources configured to user equipment transmission, described at least two
The PRACH of group random access resource is different in time domain.
In specific implementation, base station when distributing random access resource to UE, can by physical layer control signaling or
The information at least two groups random access resources that wireless heterogeneous networks (RRC) signaling on main plot is configured to UE transmission.
Step S102：The downlink signaling of triggering Stochastic accessing is sent to the user equipment, to cause the user equipment
Authorized using one of described at least two groups of random access resources in auxiliary and carry out Stochastic accessing in access cell.
In specific implementation, after at least two groups of random access resources configured are sent to UE, according to the need of reality
Will, base station can send the downlink signaling of triggering Stochastic accessing to UE, so that obtaining user equipment is receiving touching for base station transmission
When sending out the downlink signaling of Stochastic accessing, it is corresponding random that the transmission on LAA SCell can be attempted according to the order of time-domain position
Access lead code, so as to random according to which group at least two groups of random access resources described in the judgement of the order of time-domain position
Physical Random Access Channel (Physical Random Access Channel, PRACH) resource in access-in resource can be used
In the transmission that upstream data is carried out on LAA SCell.
In specific implementation, according to the actual needs, base station can be triggered by the RRC signaling on main plot or extension
The mode of the physical layer control signaling of Stochastic accessing, the letter of at least two groups random access resources corresponding to being configured is sent to UE
Breath, specifically refers to Fig. 2 and Fig. 3.
Fig. 2 shows a kind of signaling process figure of the accidental access method of user equipment in the embodiment of the present invention.Referring to
Fig. 2, in specific implementation, a kind of accidental access method of user equipment in the embodiment of the present invention can include following step
Suddenly：
Step S201：Base station is sent at least two groups of Stochastic accessings configured to UE by the RRC signaling on main plot and provided
The information in source.
In specific implementation, it is connected and when having been set up communication service when UE has established RRC with base station, base station exists
Can be that user equipment (UE) configures carrier aggregation when determining that UE supports carrier aggregation and has business demand.Base station is UE configurations
Carrier aggregation include a main plot (Primary Cell, PCell) and one or more secondary cells (Secondary Cell,
SCell).In carrier aggregation, wireless heterogeneous networks (RRC) signalings such as system message, beep-page message are obtained on UE main plots, i.e.,
3 control signaling of layer.
In the present embodiment, base station by the RRC signaling on main plot to UE send for its configuration LAA SCell extremely
The information of few two groups of random access resources, to cause UE to obtain letter of the base station as its at least two groups random access resource configured
Breath.
Step S202：UE receives the RRC signaling on the main plot, and is parsed from the RRC signaling on the main plot
Go out the information at least two groups random access resources that the base station is configured.
In specific implementation, UE, can be from being received when receiving base station in the RRC signaling sent on the main plot
RRC signaling in parse corresponding at least two groups random access resources information and storage, in case subsequently on LAA SCell
Carry out use during Stochastic accessing.
Step S203：Base station sends the physical layer control signaling of triggering Stochastic accessing to UE.
In specific implementation, in order to trigger Stochastic accessings of the UE on LAA SCell, base station first to UE send triggering with
The physical layer control signaling of machine access.
Step S204：UE using parsing obtain described in one of at least two groups of random access resources it is enterprising in LAA SCell
Row Stochastic accessing.
In specific implementation, at least two groups of the Stochastic accessing that base station is configured by UE, Stochastic accessing described in every group provides
Source include Physical Random Access Channel (Physical Random Access Channel, PRACH) time domain and frequency domain information and
The information of corresponding random access guiding index.Wherein, the PRACH resources in every group of random access resource in time domain not
Together, i.e., positioned at different subframes.
When receiving the physical layer control signaling of triggering Stochastic accessing of base station transmission, UE can be according to described at least two
The time-domain position order of group random access resource attempts the random access guiding corresponding to transmission on LAA SCell, can with determination
It can be carried out with the random access resource which is organized at least two groups of random access resources described in use on LAA SCell at random
Access.When the random access resource for being determined to use carries out Stochastic accessing success in LAA SCell, connect at random using the group
The PRACH resources for entering resource send upstream data on LAA SCell.
In an embodiment of the present invention, in order to improve the efficiency of resource distribution, base station can be in triggering UE Stochastic accessing
Signaling in carry by the UE at least two groups random access resources configured information, specifically refer to Fig. 3.
Fig. 3 shows the signaling process figure of the accidental access method of another user equipment in the embodiment of the present invention.Ginseng
See Fig. 3, in specific implementation, the accidental access method of the user equipment in the embodiment of the present invention can include the steps：
Step S301：Base station sends the physical layer control signaling of triggering Stochastic accessing, the physical layer control signaling to UE
Include the information at least two groups random access resources that base station is configured.
In an embodiment of the present invention, base station is sending the information of at least two groups random access resources configured to UE
When, can be by least two groups of random access resources added to the physical layer control signaling for triggering Stochastic accessing, namely extend
The Downlink Control Information (DCI) of 1A forms, in the DCI of 1A forms according to sequence of subframes carry corresponding to multiple PRACH resources.
In another implementation of the present invention, base station introduces new cell in the DCI of 1A forms and indicates whether to take in a subframe
The PRACH resource expansions of band are to multiple subframes.
Step S302：UE receives the physical layer control signaling, therefrom parse at least two groups that base station is configured it is random
The information of access-in resource, and one of at least two groups of random access resources obtained using parsing carried out on LAA SCell it is random
Access.
The accidental access method of user equipment in above-described embodiment is different from the accidental access method shown in Fig. 2, is
Base station used signaling when sending at least two groups of random access resources configured to UE is different, refer to corresponding to Fig. 2
Corresponding part in embodiment performs step S301 and S302, will not be repeated here.
The accidental access method of the above-mentioned user equipment in the embodiment of the present invention is described in detail, below will be right
Device corresponding to above-mentioned method is further described in detail.
Fig. 4 shows a kind of structure of base station in the embodiment of the present invention.Referring to Fig. 4, in specific implementation, the present invention is real
The trigger element 402 of resource transmitting element 401 and first can be included by applying the base station 400 in example, wherein：
Resource transmitting element 401, suitable for sending the information of at least two groups random access resources configured to user equipment,
The PRACH of at least two groups random access resources is different in time domain.
In specific implementation, the resource transmitting element 401, suitable for by downlink signaling, such as physical layer control signaling or
RRC signaling on person main plot, the information of at least two groups random access resources configured is sent to the user equipment,
First trigger element 402, suitable for sending the downlink signaling of triggering Stochastic accessing to the user equipment, to cause
State described in user equipment use one of at least two groups of random access resources and authorized in auxiliary and carry out Stochastic accessing in access cell.
In specific implementation, the resource transmitting element 401, suitable for by downlink signaling, such as physical layer control signaling or
RRC signaling on person main plot, the information of at least two groups random access resources configured is sent to the user equipment.
In specific implementation, random access resource described in every group includes PRACH time domains and frequency domain information and corresponding random
The information of access lead index.
The structure of the user equipment corresponding with the base station shown in Fig. 4 refers to Fig. 5.
Referring to Fig. 5, in specific implementation, the user equipment 500 in the embodiment of the present invention, can include：
First receiving unit 501, the information of at least two groups random access resources configured suitable for receiving base station, it is described extremely
The PRACH of few two groups of random access resources is different in time domain.
First Stochastic accessing unit 502, one group of Stochastic accessing being adapted in use at least two groups of random access resources
Resource authorizes in auxiliary and carries out Stochastic accessing in cell.
In specific implementation, random access resource described in every group includes PRACH time domains and frequency domain information and corresponding random
The information of access lead index.
In the present invention, first receiving unit 501, suitable for receive the base station by described in downlink signaling transmission extremely
The information of few two groups of random access resources.
Fig. 6 shows the structure of another base station in the embodiment of the present invention.Referring to Fig. 6, in specific implementation, the present invention
Base station 600 in embodiment can include the second trigger element 601, wherein：
Second trigger element 601, it is described descending suitable for sending the downlink signaling of triggering Stochastic accessing to the user equipment
Signaling includes the information of at least two groups random access resources, the PRACH of at least two groups random access resources in time domain not
Together, carried out with causing described in the user equipment use one of at least two groups of random access resources to be authorized in auxiliary in access cell
Stochastic accessing.
In specific implementation, random access resource described in every group includes PRACH time domains and frequency domain information and corresponding random
The information of access lead index.
The structure of the user equipment corresponding with the base station shown in Fig. 6 refers to Fig. 7.
Fig. 7 shows the structure of another user equipment in the embodiment of the present invention.Fig. 7 is referred to, in specific implementation,
Another user equipment 700 in the embodiment of the present invention can include the second receiving unit 701 and the second Stochastic accessing unit
702, wherein：
Second receiving unit 701, the downlink signaling of the triggering Stochastic accessing sent suitable for receiving base station；Resolution unit, fit
In the information that at least two groups random access resources are parsed from the control signaling, at least two groups of random access resources
PRACH is different in time domain.
Second Stochastic accessing unit 702, it is adapted in use to one of described at least two groups of random access resources that parsing obtains to exist
Auxiliary authorizes and carries out Stochastic accessing in access cell.
In specific implementation, random access resource described in every group includes PRACH time domains and frequency domain information and corresponding random
The information of access lead index.
It is that user equipment distributes different at least two groups of Stochastic accessings moneys in time domain by base station using above-mentioned scheme
Source so that user equipment receive base station triggering Stochastic accessing signaling when, can use base station be configured at least two
Any group of random access resource in group random access resource, authorized in auxiliary and carry out Stochastic accessing in access cell, thus can
The success rate of progress Stochastic accessing in access cell is authorized to improve user equipment in auxiliary, lifts the usage experience of user.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in computer-readable recording medium, and storage is situated between
Matter can include：ROM, RAM, disk or CD etc..
The method and system of the embodiment of the present invention are had been described in detail above, the present invention is not limited thereto.Any
Art personnel, without departing from the spirit and scope of the present invention, it can make various changes or modifications, therefore the guarantor of the present invention
Shield scope should be defined by claim limited range.
Claims (28)
- A kind of 1. accidental access method of user equipment, it is characterised in that including：The information of at least two groups random access resources configured, at least two groups of random access resources are sent to user equipment PRACH it is different in time domain；The downlink signaling of triggering Stochastic accessing is sent to the user equipment, to cause at least two described in the user equipment use One of group random access resource authorizes in auxiliary and carries out Stochastic accessing in access cell.
- 2. the accidental access method of user equipment according to claim 1, it is characterised in that described to be sent to user equipment The information of at least two groups random access resources configured, including：The information of at least two groups random access resources configured is sent to the user equipment by downlink signaling.
- 3. the accidental access method of user equipment according to claim 2, it is characterised in that the downlink signaling is physics Layer control signaling.
- 4. the accidental access method of user equipment according to claim 2, it is characterised in that small based on the downlink signaling RRC signaling in area.
- 5. the accidental access method of user equipment according to claim 1, it is characterised in that Stochastic accessing described in every group provides Source includes the information of PRACH time domains and frequency domain information and corresponding random access guiding index.
- A kind of 6. accidental access method of user equipment, it is characterised in that including：The downlink signaling of triggering Stochastic accessing is sent to the user equipment, the downlink signaling includes at least two groups of Stochastic accessings The information of resource, the PRACH of at least two groups random access resources is different in time domain, to cause the user equipment to use One of described at least two groups of random access resources authorize in auxiliary and carry out Stochastic accessing in access cell.
- 7. the accidental access method of user equipment according to claim 6, it is characterised in that Stochastic accessing described in every group provides Source includes the information of PRACH time domains and frequency domain information and corresponding random access guiding index.
- A kind of 8. accidental access method of user equipment, it is characterised in that including：Receive the information of at least two groups random access resources that base station is configured, at least two groups of random access resources PRACH is different in time domain；Authorized in auxiliary using one group of random access resource at least two groups of random access resources and carried out at random in cell Access.
- 9. the accidental access method of user equipment according to claim 8, it is characterised in that Stochastic accessing described in every group provides Source includes the information of PRACH time domains and frequency domain information and corresponding random access guiding index.
- 10. the accidental access method of user equipment according to claim 8, it is characterised in that matched somebody with somebody the reception base station The information at least two groups random access resources put, including：Receive information of the base station by least two groups random access resources described in downlink signaling transmission.
- 11. the accidental access method of user equipment according to claim 10, it is characterised in that the downlink signaling is thing Manage layer control signaling.
- 12. the accidental access method of user equipment according to claim 10, it is characterised in that based on the downlink signaling RRC signaling in cell.
- A kind of 13. accidental access method of user equipment, it is characterised in that including：Receive the downlink signaling for the triggering Stochastic accessing that base station is sent；The information of at least two groups random access resources, at least two groups of random access resources are parsed from the downlink signaling PRACH it is different in time domain；Using parsing obtain described in one of at least two groups of random access resources authorize in auxiliary and connect at random in access cell Enter.
- 14. the accidental access method of user equipment according to claim 13, it is characterised in that Stochastic accessing described in every group Resource includes the information of PRACH time domains and frequency domain information and corresponding random access guiding index.
- A kind of 15. base station, it is characterised in that including：Resource transmitting element, suitable for sending the information of at least two groups random access resources configured to user equipment, it is described extremely The PRACH of few two groups of random access resources is different in time domain；First trigger element, suitable for sending the downlink signaling of triggering Stochastic accessing to the user equipment, to cause the user One of at least two groups of random access resources described in equipment use authorize in auxiliary and carry out Stochastic accessing in access cell.
- 16. base station according to claim 15, it is characterised in that the resource transmitting element, suitable for passing through downlink signaling The information of at least two groups random access resources configured is sent to the user equipment.
- 17. base station according to claim 16, it is characterised in that the downlink signaling is physical layer control signaling.
- 18. base station according to claim 16, it is characterised in that the downlink signaling is the RRC signaling on main plot.
- 19. base station according to claim 15, it is characterised in that random access resource described in every group includes PRACH time domains The information indexed with frequency domain information and corresponding random access guiding.
- A kind of 20. base station, it is characterised in that including：Second trigger element, suitable for sending the downlink signaling of triggering Stochastic accessing to user equipment, the downlink signaling is included extremely The information of few two groups of random access resources, the PRACH of at least two groups random access resources is different in time domain, to cause State described in user equipment use one of at least two groups of random access resources and authorized in auxiliary and carry out Stochastic accessing in access cell.
- 21. base station according to claim 20, it is characterised in that random access resource described in every group includes PRACH time domains The information indexed with frequency domain information and corresponding random access guiding.
- A kind of 22. user equipment, it is characterised in that including：First receiving unit, the information of at least two groups random access resources configured suitable for receiving base station, described at least two groups The PRACH of random access resource is different in time domain；First Stochastic accessing unit, one group of random access resource at least two groups of random access resources is adapted in use to auxiliary Help to authorize and carry out Stochastic accessing in cell.
- 23. user equipment according to claim 22, it is characterised in that random access resource described in every group includes PRACH The information of time domain and frequency domain information and corresponding random access guiding index.
- 24. user equipment according to claim 22, it is characterised in that first receiving unit, suitable for described in reception The information that base station passes through at least two groups random access resources described in downlink signaling transmission.
- 25. user equipment according to claim 24, it is characterised in that the downlink signaling is physical layer control signaling.
- 26. user equipment according to claim 24, it is characterised in that the downlink signaling is the RRC letters on main plot Order.
- A kind of 27. user equipment, it is characterised in that including：Second receiving unit, the downlink signaling of the triggering Stochastic accessing sent suitable for receiving base station；Resolution unit, suitable for parsing the information of at least two groups random access resources from the downlink signaling, described at least two The PRACH of group random access resource is different in time domain；Second Stochastic accessing unit, it is adapted in use to one of described at least two groups of random access resources that parsing obtains to be authorized in auxiliary Stochastic accessing is carried out in access cell.
- 28. user equipment according to claim 27, it is characterised in that random access resource described in every group includes PRACH The information of time domain and frequency domain information and corresponding random access guiding index.
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| CN201610554194.9A CN107623947A (en) | 2016-07-14 | 2016-07-14 | Base station, user equipment and its accidental access method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399630A (en) * | 2019-08-16 | 2021-02-23 | 华为技术有限公司 | Communication method and device |
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