CN103812617B - Method, device and base station for improving user equipment initial access delay - Google Patents
Method, device and base station for improving user equipment initial access delay Download PDFInfo
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- CN103812617B CN103812617B CN201210454836.XA CN201210454836A CN103812617B CN 103812617 B CN103812617 B CN 103812617B CN 201210454836 A CN201210454836 A CN 201210454836A CN 103812617 B CN103812617 B CN 103812617B
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Abstract
The invention provides a method, a device and a base station for improving user equipment initial access delay. The method for improving the user equipment initial access delay comprises configuring a transmission mode of user equipment into an initial transmission mode through the base station when the user equipment requests initial access; receiving user equipment ability information which is reported through the user equipment and confirming a bit number of level indicating information which is reported through the user equipment in combination with the number of antenna ports of the base station; decoding transmission data on an uplink sharing channel of the user equipment according to the bit number of the level indicating information and enabling the transmission data and the level indicating information to reuse uplink sharing channel resources. Compared with the prior art, the method for improving the user equipment initial access delay has the advantages of improving user equipment initial access delay before the user equipment ability information is received, not limiting any scheduling processes or layer 3 scenes and being high in area handling capacity for subsequent user equipment initial accesses.
Description
Technical field
It is the present invention relates to mobile communication technology field more particularly to a kind of for improving user equipment when being initially accessed
The technology of time delay.
Background technology
In the initial access process of user equipment, if user equipment is based on periodic channel quality configured information
The activation mechanism of (CQI, Channel-Quality Indicator), is configured to one of transmission mode 3/4/8/9 by base station, uses
Family equipment is needed to base station (eNodeB) reporting hierarchies configured information (RI, Rank Indicator).User equipment is assigned
The transfer resource of physical uplink link shared channels (PUSCH, Physical Uplink Shared Channel), when RI information
When being transmitted in being included in the subframe of the transfer resource, RI information is multiplexed the up-link with UL_SCH upstream datas and shares
Channel.In the case, the speed of UL_SCH upstream datas is matched with the speed of RI information.
Before the ability information that base station receives user equipment, as the bit of the RI information being transmitted is not known in base station
Number, so as to cannot be correctly decoded to the UL_SCH upstream datas including RI.
The content of the invention
It is an object of the invention to provide a kind of method for improving time delay of the user equipment when being initially accessed, device with
Base station.
According to an aspect of the invention, there is provided a kind of be used for improving user equipment when being initially accessed in base station end
The method of time delay, wherein, the method includes：
The transmission mode of the user equipment is configured to initial transmission pattern when user equipment requests are initially accessed by a,
Wherein, the initial transmission pattern is without the need for the user equipment to report grade configured information；
B receives its ability information of the user equipment to report；
Ability informations of the c according to the user equipment, with reference to the antenna port number of the base station, determines on the user equipment
The bit number of the grade configured information of report；
Bit numbers of the d according to the grade configured information, the decoding user equipment is on uplink shared channel
Transmission data, wherein, the transmission data is multiplexed uplink shared channel resource with the grade configured information.
According to another aspect of the present invention, additionally provide one kind be initially accessed for improving user equipment in base station end
When time delay device, wherein, the device includes：
Initial configuration device, for when user equipment requests are initially accessed, the transmission mode of the user equipment being matched somebody with somebody
Initial transmission pattern is set to, wherein, the initial transmission pattern is without the need for the user equipment to report grade configured information；
Ability reception device, for receiving its ability information of the user equipment to report；
Bit number determining device, for the ability information according to the user equipment, with reference to the antenna port number of the base station,
Determine the bit number of the grade configured information of the user equipment to report；
Data deciphering device, for the bit number according to the grade configured information, decodes the user equipment up
Transmission data on link shared channels, wherein, the transmission data is shared with grade configured information multiplexing up-link
Channel resource.
According to a further aspect of the invention, additionally provide a kind of for improving time delay of the user equipment when being initially accessed
Base station, wherein, the base station include as it is aforementioned according to a further aspect of the present invention be used for improving user equipment and existing in base station end
The device of time delay when being initially accessed.
Compared with prior art, present invention improves before the ability information of user equipment is received, user equipment exists
Time delay when being initially accessed.Also, the present invention will not cause to limit to any scheduling process or layer 3 (layer3) scene.For
Being initially accessed for concurrent user equipment, it is of the invention that there is higher cell throughout.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, other of the invention
Feature, objects and advantages will become more apparent upon：
Fig. 1 illustrates that a kind of improvement of the prior art is initially accessed the scheme of time delay；
Fig. 2 illustrates that another kind of improvement of the prior art is initially accessed the scheme of time delay；
Fig. 3 illustrates the method for improving time delay of the user equipment when being initially accessed according to an embodiment of the invention
Flow chart；
Fig. 4 is illustrated according to another preferred embodiment of the present invention for improving time delay of the user equipment when being initially accessed
Device schematic diagram.
In accompanying drawing, same or analogous reference represents same or analogous part.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Have two schemes to improve user equipment in current LTE network is initially accessed time delay.Fig. 1 and Fig. 2 show respectively
2 kinds of improving countermeasures having in technology.
As shown in figure 1, in step S101, the CQI that 2 configuration cycle property of base station is reported is to user equipment 1.In this situation
Under, the data transmitted on PUSCH in order to avoid user equipment 1 are conflicted with CQI/RI's, and base station 2 is to its uplink scheduling machine
System is limited, until receiving the ability information of user equipment 1.
Therefore, next, in step s 102, base station 2 is performed with regard to the PUSCH data of user equipment 1 and rushing for CQI/RI
It is prominent to avoid；In step s 103, user equipment 1 sends its ability information to base station 2, after base station 2 receives the ability information, knot
Close its antenna port number, it is determined that corresponding RI bit numbers, with when PUSCH data are clashed with CQI/RI to PUSCH data
Decoded.
In step S104, the CQI that base station 2 is reported according to user equipment 1 is performed according to predetermined way and is fitted with the CQI phases
The scheduling of physical down link sharing channel (PDSCH, the PhysicalDownlink Shared Channel) resource answered.
For the improving countermeasure shown in Fig. 1, for avoiding conflicting with PUSCH data, the uplink of user equipment 1 is subject to
Limit, it is under LTE time division duplexs (TDD, Time DivisionDuplex) pattern, up due to what is distributed for PUSCH transmission
Subframe is less, and situation is even worse.Therefore, the time delay being initially accessed is affected.
Fig. 2 illustrates that another kind improves the scheme that user equipment is initially accessed time delay.In this scenario, base station 2 will not to
The CQI that equipment 1 configuration cycle property in family is reported, until receiving the ability information of user equipment 1.
As shown in Fig. 2 in step s 201, user equipment 1 is configured to object transmission pattern, such as transmission mode by base station 2
One of 3/4/8/9, the CQI 1 configuration cycle property of user equipment not reported.
Subsequently, in step S202, base station 2 is based on initial modulation coded system (MCS, Modulation and Coding
Scheme), perform PDSCH scheduling of resource.
In step S203, user equipment 1 sends its ability information to base station 2, after base station 2 receives the ability information,
With reference to its antenna port number, it is determined that corresponding RI bit numbers, with the decoding data transmitted on PUSCH to user equipment 1.
In step S204, the CQI that base station 2 is reported to 1 configuration cycle property of user equipment.
In step S205, the CQI that base station 2 is reported according to user equipment 1 is performed according to predetermined way and is fitted with the CQI phases
The PDSCH scheduling of resource answered.
For the improving countermeasure shown in Fig. 2, MCS is as a kind of relatively low configuration meeting the user equipment of cell edge.
But, this is to the user equipment in center of housing estate and unfair, and they postpone a meeting or conference when being initially accessed it is even worse.
Fig. 3 is the method flow diagram according to one embodiment of the invention, illustrates that base station 2 improves user equipment 1 and is initially accessed
The process of time delay.
As shown in figure 3, in step S301, base station 2 when the request of user equipment 1 is initially accessed, by the user equipment 1
Transmission mode is configured to initial transmission pattern, and wherein, the initial transmission pattern reports grade to indicate letter without the need for the user equipment 1
Breath, such as transmission mode 2.
For example, when the request of user equipment 1 is initially accessed, the channel quality reported based on 1 periodicity of user equipment is referred to
Show information, the transmission mode of the user equipment 1 is configured to initial transmission pattern by base station 2, such as transmission mode 2, so as to the user
Equipment 1 without the need for report grade configured information to base station 2, while the channel quality indication (CQI) information that reports of 2 configuration cycle property of base station to
The user equipment 1.
Initial transmission pattern is configured in the transmission mode of user equipment 1, such as after transmission mode 2, in step s 302,
Base station 2 receives its ability information that the user equipment 1 is reported；In step S303, ability of the base station 2 according to the user equipment 1
Information, with reference to the antenna port number of the base station 2, determines the bit number of the grade configured information that the user equipment 1 is reported.Such as following table
Shown in 1, according to 3GPP36.212-a505.2.2 with regard to uplink shared channel associated description, wherein, the bit of RI information
Number (bit wide) depends on the ability of the user equipment 1 and the antenna port number of base station 2.
Table 1：
In step s 304, bit number of the base station 2 according to the grade configured information, decoding user equipment 1 is in up-link
Transmission data in shared channel (PUSCH), wherein, the transmission data shares letter with the grade configured information multiplexing up-link
Road resource.When PUSCH data are clashed with RI, bit number of the base station 2 according to RI decodes the PUSCH data.
Preferably, the process also includes step S305, is configured to initial transmission pattern in user equipment 1 in step S301
Afterwards, in step S305, the channel quality indication (CQI) information that base station 2 is reported based on user equipment 1 is performed and is indicated with the channel quality
The corresponding scheduling to physics downlink sharied signal channel resource of information.It is configured to just in the transmission mode of user equipment 1
After beginning transmission mode, such as transmission mode 2, base station 2 avoid without the need for by the uplink of restricting user equipment 1 UL_SCH with
The conflict of CQI/RI, it is possible to perform the scheduling to PDSCH resources based on the CQI of user equipment to report.
Preferably, the process can also include step S306 (not shown), after user equipment 1 completes to be initially accessed, base
2 are stood according to the current channel quality information of the user equipment 1, the transmission mode of the user equipment 1 is switched to and the current letter
The corresponding object transmission pattern of road quality information.Here, current channel quality information can come from reporting with the user equipment 1
Channel quality indication (CQI) information or measurement report；Object transmission pattern can be transmission mode 3, transmission mode 4, transmission mode 8
One of and transmission mode 9.
Hereinafter simply list each transmission mode：
1. transmission mode 1, single antenna port transmission：It is mainly used in the occasion of single antenna transmissions.
2. transmission mode 2, send diversity mode：It is suitable for that cell edge channel situation is more complicated, disturbs larger feelings
Condition, is sometimes also used for the situation of high speed, and diversity can provide diversity gain.
3. transmission mode 3, big delay diversity：It is suitable for the situation of user equipment high-speed mobile.
4. transmission mode 4, Closed-Loop Spatial Multiplexing：It is suitable for the preferable occasion of channel condition, for providing high data transfer rate
Transmission.
5. transmission mode 5, MU-MIMO transmission pattern：It is mainly used to improve the capacity of cell.
6. transmission mode 6, the transmission of Rank1：It is primarily suitable for the situation of cell edge.
7. transmission mode 7, the single current Beamforming patterns of Port5：Cell edge is also suitable for mainly, can be effective
To anti-interference.
8. transmission mode 8, double-current Beamforming patterns：Can be used for cell edge and can also be applied to other scenes.
9. transmission mode 9, transmission mode 9 are a kind of patterns newly increased in LTE-A, can support to be up to 8 layers of biography
It is defeated, mainly for lifting message transmission rate.
Here, used as a preferred embodiment of the present invention, base station 2 can be by installing and running specific device therein
To realize above-mentioned steps, to improve time delay of the user equipment when being initially accessed.
Fig. 4 is the schematic device according to another embodiment of the present invention, illustrates and is initially accessed for improving user equipment
The improvement of delay device 420 of time delay.As shown in figure 4, improvement of delay device 20 is installed in base station 2, including initial configuration device
421st, ability reception device 422, bit number determining device 423 and data deciphering device 424.
Specifically, initial configuration device 421 user equipment 1 request be initially accessed when, by the transmission mould of the user equipment 1
Formula is configured to initial transmission pattern, and wherein, the initial transmission pattern reports grade configured information without the need for the user equipment 1, such as passes
Defeated pattern 2.
For example, when the request of user equipment 1 is initially accessed, initial configuration device 421 is by the transmission mode of the user equipment 1
Initial transmission pattern, such as transmission mode 2 is configured to, so as to the user equipment 1 is without the need for reporting grade configured information to base station 2, together
The channel quality indication (CQI) information that 2 configuration cycle property of Shi Jizhan is reported gives the user equipment 1.
Initial transmission pattern is configured in the transmission mode of user equipment 1, such as after transmission mode 2, ability reception device
422 receive its ability information that the user equipment 1 is reported；Bit number determining device 423 is believed according to the ability of the user equipment 1
Breath, with reference to the antenna port number of the base station 2, determines the bit number of the grade configured information that the user equipment 1 is reported.For example, lead to
Inquiry upper table 1 is crossed, RI bit numbers are determined.
Bit number of the data deciphering device 424 according to the grade configured information, decoding user equipment 1 are shared in up-link
Transmission data on channel, wherein, the transmission data is multiplexed uplink shared channel resource with the grade configured information.When
When PUSCH data are clashed with RI, bit number of the data deciphering device 424 according to RI decodes the PUSCH data.
Preferably, improvement of delay device 420 also includes resource scheduling device 425, its channel reported based on user equipment 1
Quality indication (CQI) information, performs the tune to physics downlink sharied signal channel resource corresponding with the channel quality indication (CQI) information
Degree.Initial transmission pattern is configured in the transmission mode of user equipment 1, such as after transmission mode 2, base station 2 need not be by limiting
The uplink of user equipment 1 is avoiding conflicting for UL_SCH data and CQI/RI, it is possible to the CQI based on user equipment to report
To perform the scheduling to PDSCH resources.
Preferably, improvement of delay device 420 can also include mode-changeover device (not shown), and which is used in user equipment
After 1 completes to be initially accessed, according to the current channel quality information of the user equipment 1, the transmission mode of the user equipment 1 is switched
To the object transmission pattern corresponding with the current channel quality information.Here, current channel quality information can come from and this
Channel quality indication (CQI) information or measurement report that user equipment 1 is reported；Object transmission pattern can be transmission mode 3, transmission mould
One of formula 4, transmission mode 8 and transmission mode 9.
It should be noted that the present invention can be carried out in the assembly of software and/or software with hardware, for example, can adopt
Realized with special IC (ASIC), general purpose computer or any other similar hardware device.
The software program of the present invention can pass through computing device to realize steps described above or function.Similarly, originally
The software program (including related data structure) of invention can be stored in computer readable recording medium storing program for performing, and for example, RAM is deposited
Reservoir, magnetically or optically driver or floppy disc and similar devices.In addition, some steps or function of the present invention can employ hardware to reality
It is existing, for example, as the circuit coordinated with processor so as to perform each function or step.
In addition, the part of the present invention can be applied to computer program, such as computer program instructions, when its quilt
When computer is performed, by the operation of the computer, the method according to the invention and/or technical scheme can be called or provide.
And the programmed instruction of the method for the present invention is called, it is possibly stored in fixed or moveable recording medium, and/or passes through
Data flow in broadcast or other signal bearing medias and be transmitted, and/or be stored according to described program instruction operation
In the working storage of computer equipment.Here, according to one embodiment of present invention, which includes a device, the device bag
The memorizer and the processor for execute program instructions for storing computer program instructions is included, wherein, when the computer journey
Sequence instruct by the computing device when, trigger method of the plant running based on aforementioned multiple embodiments of the invention and/
Or technical scheme.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as and limit involved claim.This
Outward, it is clear that " including ", a word was not excluded for other units or step, and odd number is not excluded for plural number.That what is stated in system claims is multiple
Unit or device can also be realized by software or hardware by a unit or device.The first, the second grade word is used for table
Show title, and be not offered as any specific order.
Claims (13)
1. it is a kind of base station end be used for improve time delay of the user equipment when being initially accessed method, wherein, the method includes：
The transmission mode of the user equipment is configured to initial transmission pattern when user equipment requests are initially accessed by a, its
In, the initial transmission pattern is without the need for the user equipment to report grade configured information；
B receives its ability information of the user equipment to report；
Ability informations of the c according to the user equipment, with reference to the antenna port number of the base station, determines the user equipment to report
The bit number of grade configured information；
Bit numbers of the d according to the grade configured information, decodes transmission of the user equipment on uplink shared channel
Data, wherein, the transmission data is multiplexed uplink shared channel resource with the grade configured information.
2. method according to claim 1, wherein, after step a, the method also includes：
- channel quality indication (CQI) information based on the user equipment to report, performs corresponding with the channel quality indication (CQI) information
The scheduling to physics downlink sharied signal channel resource.
3. method according to claim 1, wherein, the method also includes：
- after the user equipment completes to be initially accessed, according to its current channel quality information, by its transmission mode switch to
The corresponding object transmission pattern of the current channel quality information.
4. method according to claim 1, wherein, step a includes：
- when the user equipment requests are initially accessed, the transmission mode of the user equipment is configured to into the initial transmission
Pattern, while the channel quality indication (CQI) information that configuration cycle property is reported is to the user equipment.
5. method according to any one of claim 1 to 4, wherein, the initial transmission pattern is transmission mode 2.
6. method according to claim 3, wherein, the object transmission pattern is transmission mode 3, transmission mode 4, transmission
One of pattern 8 and transmission mode 9.
7. a kind of to be used for improving the device of time delay of the user equipment when being initially accessed in base station end, wherein, the device includes：
Initial configuration device, for when user equipment requests are initially accessed, the transmission mode of the user equipment being configured to
Initial transmission pattern, wherein, the initial transmission pattern is without the need for the user equipment to report grade configured information；
Ability reception device, for receiving its ability information of the user equipment to report；
Bit number determining device, for the ability information according to the user equipment, with reference to the antenna port number of the base station, it is determined that
The bit number of the grade configured information of the user equipment to report；
Data deciphering device, for the bit number according to the grade configured information, decodes the user equipment in up-link
Transmission data in shared channel, wherein, the transmission data is multiplexed uplink shared channel with the grade configured information
Resource.
8. device according to claim 7, wherein, the device also includes：
Resource scheduling device, for the channel quality indication (CQI) information based on the user equipment to report, performs and the channel matter
The corresponding scheduling to physics downlink sharied signal channel resource of amount instruction information.
9. device according to claim 7, wherein, the device also includes：
Mode-changeover device, for after the user equipment completes to be initially accessed, according to its current channel quality information, by which
Transmission mode switches to the object transmission pattern corresponding with the current channel quality information.
10. device according to claim 7, wherein, the initial configuration device is used for：
- when the user equipment requests are initially accessed, the transmission mode of the user equipment is configured to into the initial transmission
Pattern, while the channel quality indication (CQI) information that configuration cycle property is reported is to the user equipment.
11. devices according to any one of claim 7 to 10, wherein, the initial transmission pattern is transmission mode 2.
12. devices according to claim 9, wherein, the object transmission pattern is transmission mode 3, transmission mode 4, passes
One of defeated pattern 8 and transmission mode 9.
A kind of 13. base stations for improving time delay of the user equipment when being initially accessed, wherein, the base station is included such as claim
The device for improving time delay of the user equipment when being initially accessed any one of 7 to 12.
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| CN201210454836.XA CN103812617B (en) | 2012-11-13 | 2012-11-13 | Method, device and base station for improving user equipment initial access delay |
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| CN201210454836.XA CN103812617B (en) | 2012-11-13 | 2012-11-13 | Method, device and base station for improving user equipment initial access delay |
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| CN103812617B true CN103812617B (en) | 2017-03-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106452683B (en) * | 2016-12-07 | 2019-04-30 | 中国联合网络通信集团有限公司 | The switching method of different transmission mode and base station in a kind of lte-a system |
| CN106792995B (en) * | 2016-12-27 | 2020-01-10 | 北京邮电大学 | User access method for guaranteeing low-delay content transmission in 5G network |
| CN109842961B (en) * | 2017-09-26 | 2023-04-07 | 中兴通讯股份有限公司 | Method and device for shortening eMTC user initial access delay |
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Address after: 201206 ningqiao Road, Pudong New Area China (Shanghai) free trade test area, Pudong New Area, Shanghai Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 388 Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |