CN104105177B - The method and apparatus that power for idle mode subscriber device is saved - Google Patents
The method and apparatus that power for idle mode subscriber device is saved Download PDFInfo
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- CN104105177B CN104105177B CN201310118339.7A CN201310118339A CN104105177B CN 104105177 B CN104105177 B CN 104105177B CN 201310118339 A CN201310118339 A CN 201310118339A CN 104105177 B CN104105177 B CN 104105177B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides the method and apparatus that a kind of power for idle mode subscriber device is saved.This method includes：The DRX cycle of extension is configured, the DRX cycle of the extension is more than conventional DRX cycle and is more than the SFN cycles；The DRX cycle of the extension is sent to UE and carrys out listening paging message using the DRX cycle of the extension at the idling mode for the UE.
Description
Technical field
The present invention is generally related to wireless communication field, more specifically, is related to for idle mode subscriber device
(UE) method and apparatus that power is saved.
Background technology
It is known for idle pulley UE, monitor beep-page message using discontinuous reception (DRX) mechanism and save work(
Rate is a kind of conventional method.When UE is in RRC_IDLE states, UE can be only monitored in specific sub-frame using DRX
Beep-page message.Specifically, UE can utilize system configuration parameter and UE international mobile subscriber identity according to DRX cycle
(IMSI) paging frame (PF) number and paging occasion (PO) subframe numbers in the paging frame are calculated.Therefore in DRX pagings, UE
The specific paging time in each DRX cycle is only needed to receive a physical downlink control channel (PDCCH), and at it
His, it can be transferred to resting state to save power time.
When in RRC_IDLE states, UE is only in DRX mode.In 3GPP TS36.304 (document [1]), for sky
Not busy pattern UE processing defines how to keep page monitoring using DRX mechanism.In document [1], paging has been defined as below
Frame (PF) number and paging occasion (PO) subframe numbers：
Frame number (PF)=SFN mod T=(T/N) × (UE_ID mod N) is paged,
PO index i_s is pointed to according to subframe mapping table：I_s=floor (UE_ID/N) mod Ns.
Wherein, SFN is System Frame Number, and T is UE DRX cycle.T is the specific DRX cycles of the UE distributed by higher
Value and less one in default paging cycle (i.e. DRX cycle) value broadcasted in system information.If higher does not have
The specific DRX cycles of UE are distributed, then using default DRX cycle value.This paper it is described below in, to be broadcasted in system information
Default DRX cycle value exemplified by DRX cycle is described.
Note：Floor is downward rounding operation symbol, and mod is modulo operator.
Idle pulley UE default DRX cycle is equal in SystemInformationBlockType2 (SIB2) message
Default paging cycle in the cell of broadcast, it is defined in current RRC agreement 3GPP TS36.331 (document [2]).
Wherein nB is a value of the selection from set (4T, 2T, T, T/2, T/4, T/8, T/16, T/32)；
N=min (T, nB) refers to the number of the paging frame in a DRX cycle；
Ns=max (1, nB/T) refers to the number of the subframe (PO) in a paging frame, and it can be 1,2 or 4；
UE_ID=IMSI mod1024, wherein IMSI are UE international mobile subscriber identitys, with decimal integer
The form of (0...9) provides.
Subframe mapping table is as shown in Table 1 below：
The subframe mapping table of table 1
| Ns | PO during i_s=0 | PO during i_s=1 | PO during i_s=2 | PO during i_s=3 |
| 1 | 9 | N/A | N/A | N/A |
| 2 | 4 | 9 | N/A | N/A |
| 4 | 0 | 4 | 5 | 9 |
Current maximum paging cycle, i.e., conventional DRX cycle, be 2.56 seconds.Current SFN periodic quantities are arranged to 0-
1023.One SFN cycle is 10.24 seconds.Obviously, DRX cycle is less than the SFN cycles, and this can ensure that PF and PO result of calculations exist
It is unique in one SFN cycle.Base station and UE there will not be mixed when performing DRX mechanism using the PF and PO that calculate
Confuse.
On the other hand, it is contemplated that cell reselects problem, and idle UE at least will measure once its institute in each DRX cycle
The Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ) of the cell of service.Surveyed for adjacent cell
Amount, including between frequency/frequency in measured between measurement or wireless access technology (RAT) neighbor cell, idle UE will be each to neighbour
The time interval (T-Reselection) that cell carries out cell reselection measurement performs one-shot measurement, such as 3GPP TS36.331 (texts
Offer [2]) defined in.Wherein in 3GPP TS36.331 (document [2]), cell T-Reselection refers to be used for E-
UTRA, UTRA, GERAN or CDMA2000 cell reselect timer TreselectionRAT, in seconds, exist at present
Span defined in 3GPP TS36.331 is the 0-7 seconds.
In order to reduce the power consumption under idle pulley, it is desirable to UE wake up monitoring beep-page message frequency it is lower to save energy
Amount.It is higher for the tolerance to delay and transmit UE infrequently, such as machine type communication (MTC) equipment, for, this is
Very advantageously.
Therefore need to extend UE wake up monitoring beep-page message DRX cycle to save power consumption.According to newest SA
(Service＆System Aspects) discussion result, in 3GPP TR23.887 (document [3]) the 7th part " UE Power
In Consumption Optimizations (UEPCOP) ", UE is enabled to wake up and intercepting using the DRX cycle of extension
The potential beep-page message time saves a kind of main optimised power consumption scheme that battery is idle pulley UE (such as MTC device).Extension
DRX cycle value will be likely to be greater than a SFN periodic quantity, e.g. the 64 of SFN cycles times (64*10.24s=655.36s).
If still determining mechanism using current PF/PO, it will likely go wrong, i.e., PF and PO result of calculations will rush
It is prominent, and UE can not be made only to be waken up once in the DRX cycle of each extension, so as to which the purpose of power saving can not be realized.
For example, it is assumed that T=2048 radio frames=20.48s of the DRX cycle of default extension, this is the current SFN cycles
2 times.NB is equal to T, then N=T=2048, this represents, for each radio frames, have a subframe to have paging, with reference to above
It is the 9th subframe that the subframe mapping table of table 1, which is understood,.UE_ID is arranged to the value from 1-1023, because IMSI is mould 1024.
Then PF can be calculated using SFN mod T=(T/N) × (UE_ID mod N).As can be seen that because SFN
Scope be 1-1023, it is always less than T=2048, so SFN mod T do not work, UE_ID mod N do not work yet.
This means according to UE_ID values, in each SFN cycles, UE will wake up once.If for example, IMSI is arranged to 1, UE_
ID=1, SFN mod T=(T/N) × (UE_ID mod N)=1.This means each SFN in the DRX cycle for extension
In the cycle, for each SFN=1 radio frames, UE is required for waking up.Therefore for the DRX of 2 times of the extension equal to the SFN cycles
Cycle, UE wake up 2 times in each DRX cycle, rather than once.
Obviously, if the DRX cycle extended is more than the SFN cycles, the number that UE will wake up in each DRX cycle is
(DRX cycle/SFN cycles) is secondary.This can not meet the power conservation principles that UE only wakes up once in each DRX cycle, for
UE idle mode powers not enough optimize for saving.
Bibliography：
[1] 3GPP TS36.304v11.2.0E-UTRA UE procedures in idle mode (Release11),
2012-12
[2]3GPP TS36.331v11.2.0Radio Resource Control(RRC)Protocol
Specification (Release11), 2012-12
[3]3GPP TR23.887v0.8.0Machine-Type and other Mobile Data Applications
Communications Enhancements (Release12), 2013-02
The content of the invention
Therefore, for problem above, the invention provides on how to support the extension more than current SFN Cycle Lengths
DRX cycle to save the scheme of UE power.
According to an aspect of the invention, there is provided a kind of method that power for idle pulley UE is saved, including：Match somebody with somebody
The DRX cycle of extension is put, the DRX cycle of the extension is more than conventional DRX cycle and is more than the SFN cycles；By the DRX cycle of the extension
It is sent to UE and carrys out listening paging message using the DRX cycle of the extension at the idling mode for the UE.
According to another aspect of the present invention, there is provided the device that a kind of power for idle pulley UE is saved, including：
DRX cycle dispensing unit is extended, it is configured as the DRX cycle of configuration extension, and the DRX cycle of the extension is more than conventional DRX weeks
Phase and it is more than the SFN cycles；Transmitter unit, it is configured as the DRX cycle of the extension being sent to UE for the UE in the free time
Carry out listening paging message using the DRX cycle of the extension under pattern.
According to another aspect of the present invention, there is provided a kind of method that power for idle pulley UE is saved, including：
The DRX cycle of extension is obtained, the DRX cycle of the extension is more than conventional DRX cycle and is more than the SFN cycles；According to the DRX of the extension
Cycle determines No. PF and PO subframe numbers for listening paging message.
According to another aspect of the present invention, there is provided the device that a kind of power for idle pulley UE is saved, including：
DRX cycle acquiring unit is extended, it is configured as the DRX cycle for obtaining the extension, and the DRX cycle of the extension is more than conventional DRX
Cycle and it is more than System Frame Number (SFN) cycle；Determining unit, it is configured as determining to be used to detect according to the DRX cycle of the extension
Listen No. PF and PO subframe numbers of beep-page message.
Using the solution of the present invention, by supporting the DRX cycle of extension, UE power can be further saved.
Brief description of the drawings
, will be more preferable geographical after the description below with reference to the embodiment of the invention given by drawings below
The solution present invention, and other objects of the present invention, details, feature and advantage will become apparent.In the accompanying drawings：
Fig. 1 shows the schematic diagram of cordless communication network of the prior art；
Fig. 2 shows the flow for the method that the power for idle pulley UE according to the embodiment of the present invention is saved
Figure；
Fig. 3 shows the flow for the method that the power for idle pulley UE according to the embodiment of the present invention is saved
Figure；
Fig. 4 shows the block diagram for the device saved according to the power for idle pulley UE of embodiment of the present invention；
And
Fig. 5 shows the block diagram for the device saved according to the power for idle pulley UE of embodiment of the present invention.
Wherein, in all of the figs, same or analogous label represents there is identical, similar or corresponding feature or work(
Energy.
Embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that the disclosure is more thorough and complete, and can be by the disclosure
Scope is completely communicated to those skilled in the art.
Fig. 1 shows the schematic diagram of cordless communication network 100 of the prior art.As shown in fig. 1, network 100 includes
Multiple base stations 110 and the one or more UE120 to be communicated with each base station 110, wherein each UE120 passes through Radio Link
Its corresponding serving BS 110 is communicated.
In the following description of the disclosure, it is described by taking the current SFN cycles as an example, i.e. the periodic quantity in SFN cycles
It is 1024 (0-1023), it is minimum that this make it that the design on existing system performance and other mechanism influences.But art technology
If personnel it is to be clearly understood that future standard in the SFN cycles changed, being adapted to property of the present invention be applied to become
The SFN cycles of change and without paying creative work.
Fig. 2 shows the stream for the method 200 that the power for idle pulley UE according to the embodiment of the present invention is saved
Cheng Tu.Method 200 is for example performed by the base station 110 in Fig. 1.
Method 200 starts from step 210, the DRX cycle of the configuration extension of base station 110, and the DRX cycle of the extension is more than routine
DRX cycle and it is more than the SFN cycles.
In one embodiment, the DRX cycle of the extension is arranged to the integral multiple in SFN cycles.It is furthermore preferred that the expansion
The DRX cycle of exhibition is arranged to 2 power in SFN cycles again, 1,2,4,8,16,32,64 times such as the SFN cycles.For example, it can incite somebody to action
The DRX cycle of extension is arranged to 64 times of SFN cycles, i.e., 655.36 seconds, about 11 minutes.But those skilled in the art can be with
Understand, principle of the invention can apply to the DRX cycle of the arbitrary extension more than the SFN cycles.
Next, in step 220, the DRX cycle of the extension is sent to UE (such as UE120) for the UE by base station 110
Carry out listening paging message using the DRX cycle of the extension at the idling mode.
In one embodiment, by SystemInformationBlockType2 (SIB2) message addition on
The DRX cycle of the extension is sent to UE by the information of the DRX cycle of the extension.For example, base station 110 can be to multiple UE120
Broadcast the SIB2 message of the DRX cycle containing the extension.
In one embodiment, DRX cycle of the addition on the extension into SIB2 current PCC H-Config cells
Information.For example, the PCCH-Config cells so changed can be defined as follows：
By parameter defaultExtendLongPag wherein in the description of RadioResourceConfigCommon fields
IngCycle is described as value sfnCycle1 and corresponds to 1024 radio frames, and value sfnCycle2 corresponds to 2048 radio frames, with
This analogizes.
Fig. 3 shows the stream for the method 300 that the power for idle pulley UE according to the embodiment of the present invention is saved
Cheng Tu.Method 300 is for example performed by the UE120 in Fig. 1.
Method 300 starts from step 310, and UE120 obtains the DRX cycle of extension, and the DRX cycle of the extension is more than routine
DRX cycle and it is more than the SFN cycles.
In one embodiment, the DRX cycle of the extension is the integral multiple in SFN cycles.It is furthermore preferred that the extension
DRX cycle is 2 power times in SFN cycles, 1,2,4,8,16,32,64 times such as the SFN cycles.But those skilled in the art can
To understand, principle of the invention can apply to the DRX cycle of the arbitrary extension more than the SFN cycles.
In one embodiment, UE120 is by receiving SIB2 message from base station 110 and therefrom extracting on the extension
The information of DRX cycle obtains the DRX cycle of the extension.
In one embodiment, after receiving the SIB2 message broadcasted base station 110, there are power saving requirements
UE, such as there is the MTC device of power saving requirements, the DRX cycle of the extension can be extracted from the SIB2 message
(defaultExtendLongPagingCycle) in ensuing idle pulley DRX mechanism, while ignore default
Paging cycle (defaultPagingCycle, i.e., conventional DRX cycle).On the other hand, common UE or other kinds of MTC devices
Default paging cycle (defaultPagingCycle) can be extracted from the SIB2 message for ensuing idle mould
In formula DRX mechanism, while ignore the DRX cycle (defaultExtendLongPagingCycle) of the extension.Pass through this side
Formula, influence of the method to normal UE cycle machineries of the DRX cycle of support of the invention extension are smaller
Next the paging frame for listening paging message is determined according to the DRX cycle of the extension in step 320, UE120
Number and paging occasion (PO) subframe numbers (PF).
For the PF and PO of the DRX cycle of extension PF/PO computational methods of the computational methods based on conventional UE, but have
Change.For example, calculating identical parameter using with conventional UE PF/PO, but some deformations are carried out.
In one embodiment, as conventional UE, come according further to formula i_s=floor (UE_ID/N) mod Ns
It is determined that point to PO index i_s and PO subframe numbers are determined according to the subframe mapping table of table 1 above.
PF computational methods will have some deformations to adapt to the DRX cycle of the extension more than the SFN cycles.In a kind of embodiment party
In formula, No. PF is determined by following 3 sub-steps：
Sub-step 1：Calculate one extension DRX cycle in paging frame index number i_PF, wherein i_PF=(T/N) ×
(UE_ID mod N)。
Wherein, i_PF span is { 0...T-1 }.Because the DRX cycle T of extension is more than the SFN cycles (1024), because
This i_PF is likely to be greater than maximum SFN (it is 1023).
Sub-step 2：SFN cycle ropes in the DRX cycle of an extension are calculated according to the paging frame index number calculated
Draw i_SFN, wherein i_SFN=floor (i_PF/1024)+1.
Wherein, i_SFN span is { 1...T/1024 }, has T/1024 SFN in the DRX cycle of an extension
Cycle.
Sub-step 3：Paging frame radio frame number PF_ in the SFN cycles is calculated according to the paging frame index number calculated
SFN, wherein PF_SFN=i_PF mod1024.
Next, UE can obtain No. PF be made up of two parts of i_SFN and PF_SFN, its determination paging frame is in DRX
In which radio frames in cycle in which of cycle SFN.
In superincumbent PO/PF calculating, T is the DRX cycle of extension, and it is equal to, and that higher is distributed, UE is specific
DRX cycle value and less one in the paging cycle (DRX cycle extended) for the default extension broadcasted in SIB2.Such as
Fruit higher is configured without the specific DRX cycles of UE, then using the DRX cycle of default extension.
Wherein：
NB is a value of the selection from set (4T, 2T, T, T/2, T/4, T/8, T/16, T/32),
N=min (T, nB) refers to the number for the radio frames that PO be present,
Ns=max (1, nB/T) refers to the number of sub frames for being used for paging in a paging frame,
(wherein the SFN cycles are 1024), this is different from original UE_ID (IMSI mod1024).As can be seen that UE_ID meter
Calculation is different and different also according to the DRX cycle of extension.Using this deformation, it can ensure that UE is distributed to whole extension well
DRX cycle in.
PF illustrated below computational methods.Parameter can be arranged to：
- T=sfnCycle2=2048 radio frames=20.48 second；
- nB=T/32=64 radio frames；
- N=min (T, nB)=min (2048,64)=64；
- Ns=max (1, nB/T)=max (1,1/32)=1；
Assuming that the IMSI=2040 of the UE, then its UE_ID=IMSI mod T=2040mod2048=2040.
Then according to above-mentioned sub-step 1, i_PF=(T/N) × (UE_ID mod N)=(2048/64) ×
(2000mod64)=32 × 56=1792,
According to sub-step 2, its i_SFN=floor (i_PF/1024)+1=floor (1792/1024)+1=2,
According to sub-step 3, PF_SFN=i_PF mod1024=1792mod1024=768.
In this example, there are 2 SFN cycles in the DRX cycle of extension, therefore for the UE, it pages radio frames
It is 768 positioned at the 2nd SFN cycle and its radio frame number.
I_s is i_s=floor (UE_ID/N) mod Ns=floor (2040/64) mod1=31mod1=0.Then basis
The subframe mapping table of table 1 above is it is recognised that PO subframe numbers are 9.
Finally it may be concluded that in this example, DRX cycle and parameter as described above for above-mentioned extension are set
Put, the UE intercepts the 9th subframe of the 768th radio frames in the 2nd SFN cycle in the DRX cycle of an extension
Beep-page message.
As can be seen that in the PF and PO of the above-mentioned DRX cycle for extension are calculated, SFN periodic keys be base station and
UE determines the important information of the particular location of paging radio frames.Therefore in the mechanism using the DRX cycle of extension, it is also necessary to
SFN cycle synchronisations are kept between UE and base station.
Therefore, for base station side, method 200 can also include step 230, and base station (such as base station 110) is to SFN periodic keys
Counted, and the SFN periodic keys counted are sent to UE (such as UE120) for the SFN cycles between base station and UE
It is synchronous.
For example, for first SFN, base station, which is indexed, is defined as 1, then proceedes to count SFN periodic keys.
The maximum of SFN periodic keys is determined by the DRX cycle of the extension of the cell, therefore SFN period index values exist
In the range of.SFN period index values are periodically count down to from 1For different districts, the expansion configured
The DRX cycle of exhibition may be different, therefore the maximum of SFN periodic keys may also be different.
In one embodiment, base station is sent SFN weeks by MasterInformaitonBlock (MIB) message to UE
Phase indexes.
Currently, SFN is transmitted in MIB message.Therefore, can indicate to work as in base station broadcast is to UE MIB message
Preceding SFN periodic keys.Then when UE receives the SFN in MIB message, while it can obtain and be extended corresponding to the SFN
DRX cycle in accurate SFN periodic keys.UE can be by SFN cycle counts and base station synchronization afterwards.
In one embodiment, base station can add the information on SFN periodic keys to MIB message.If for example,
Assuming that the DRX cycle of extension is equal to 64 times of SFN cycles, then added with cell SFN periodic keys (sfnCycleIndex)
MIB message can be defined as below：
SfnCycleIndex is wherein defined as 6 bit values in the description of MasterInformationBlock fields
SFN periodic keys, its scope from 1 to 64, corresponding to maximum extension DRX cycle value sfnCycle64.Full 0 value 000000
Represent that a kind of cell does not support the abnormal conditions of the DRX cycle of extension.The UE for not having extra power saving requirements will ignore
The value.
In another embodiment, base station by SystemInformationBlockType1 (SIB1) message to UE
Send SFN periodic keys.
As described above, although current SFN is transmitted in MIB message, the periodicity of SIB1 message and MIB message
There is specific corresponding relation, the radio frames that SIB1 message be present also certainly exist MIB message for transmission.UE needs to obtain SIB1
Message is to reside in the cell.If sending SFN periodic keys by SIB1 message, when UE receive MIB message and
The relation between the SFN periodic keys in SFN the and SIB1 message in MIB message can be easily obtained during SIB1 message.Cause
This is by SIB1 message come to send SFN periodic keys be also a kind of good alternative.
For example, base station can add SFN periodic keys corresponding with the radio frames to SIB1 message.
Consider the flexibility of SFN periodic keys, a constant maxSfnCycleIndex can be defined to represent maximum SFN
Periodic key, it can be adjusted according to being actually needed.Obviously, the SFN period index values ratio that can be supported using SIB1 methods
The SFN period index values supported using MIB methods are more, because less strict to the size requirements of SIB1 message.
For example, following cell can be added in SystemInformationBlockType1 message：
SfnCycleIndex INTEGER (0..maxSfnCycleIndex) OPTIONAL,
If the DRX cycle of extension need not be supported, UE can ignore the cell, therefore it is a kind of optional cell
Rather than compulsory cell.
Similar, in order to keep SFN cycle synchronisations between UE and base station, for UE sides, method 300 can also wrap
Include step 330, UE (such as UE120) from base station (such as base station 110) receive SFN periodic keys that base station counted for base station and
SFN cycle synchronisations between UE.UE carries out the mode of SFN cycle synchronisations above in conjunction with as described in step 230 with base station.
Fig. 4 shows the square frame for the device 400 saved according to the power for idle pulley UE of embodiment of the present invention
Figure.Device 400 can be realized in a base station or realized by base station.
As shown in Figure 4, device 400 includes extension DRX cycle dispensing unit 410, and it is configured as the DRX of configuration extension
Cycle, the DRX cycle of the extension are more than conventional DRX cycle and are more than the SFN cycles.Device 400 also includes transmitter unit 420, its
It is configured as the DRX cycle of the extension being sent to UE for the UE at the idling mode using the DRX cycle of the extension
Listening paging message.
In one embodiment, device 400 also includes counting unit 430, and it is configured as carrying out SFN periodic keys
Count, and the SFN periodic keys that transmitter unit 420 is additionally configured to be counted are sent to UE between base station and UE
SFN cycle synchronisations.
In one embodiment, transmitter unit 420 sends SFN periodic keys by SIB1 message to UE.
In one embodiment, transmitter unit 420 sends SFN periodic keys by MIB message to UE.
In one embodiment, extend DRX cycle dispensing unit 410 and the DRX cycle of extension is arranged to the SFN cycles
Integral multiple.
In one embodiment, extend DRX cycle dispensing unit 410 and the DRX cycle of extension is arranged to the SFN cycles
2 power times.
In one embodiment, transmitter unit 420 passes through the information to the addition of SIB2 message on the DRX cycle of extension
The DRX cycle of the extension is sent to UE.
Fig. 5 shows the square frame for the device 500 saved according to the power for idle pulley UE of embodiment of the present invention
Figure.Device 500 can for example be realized in UE or realized by UE.
As shown in Figure 5, device 500 includes extension DRX cycle acquiring unit 510, and it is configured as obtaining the extension
DRX cycle, the DRX cycle of the extension are more than conventional DRX cycle and are more than the SFN cycles.Device 500 also includes determining unit 520,
It is configured as determining No. PF for listening paging message and PO subframe numbers according to the DRX cycle of the extension.
In one embodiment, device 500 also includes receiving unit 530, and it is configured as receiving what base station was counted
SFN periodic keys are for the SFN cycle synchronisations before base station and UE.
In one embodiment, the DRX cycle of the extension is the integral multiple in SFN cycles.
In one embodiment, the DRX cycle of the extension is 2 power times in SFN cycles.
In one embodiment, determining unit 520 determines No. PF and PO in a manner of described in associated methods 300 above
Subframe numbers.
In one embodiment, receiving unit 530 is additionally configured to receive SIB2 message from base station, and extends DRX
Cycle acquiring unit 510 is additionally configured to information of the extraction on the DRX cycle of the extension from the SIB2 message of reception.
In addition, being reselected for idle pulley UE cell, each DRX cycle performs a serving cell measurement.It is right
Serving cell measurement is performed for the DRX cycle of extension will not produce problem.But for performing neighbor cell measurement,
Its control by the time interval (T-Reselection) for carrying out cell reselection measurement to adjacent cell.Idle pulley UE weeks
The time interval of cell reselection measurement is carried out to phase property to adjacent cell more preferably greater than a DRX cycle.Therefore need to extend 3GPP
The scope of the value of T-Reselection in TS36.331, so that its maximum is more than the DRX cycle of extension.
It suggested herein in the middle DRX cycle for supporting to extend of wireless access network (RAN) to save the work(of UE (such as MTC device)
The scheme of rate, the program consider backwards compatibility, do not interfere with existing conventional UE.In addition, utilize adjustable parameter setting
So that it is very flexible, and reuses current signaling procedure and only carry out limited addition to exchange necessary information.Herein
Influence of the proposed scheme to existing consensus standard and system is smaller, and using extension DRX cycle can also realize into
One step saves the purpose of UE power.This will influence RRC agreement 3GPP TS36.331 current 3GPP standards and idle pulley UE
Operation Definition 3GPPTS36.304.
Herein, the overlay area of base station can be referred to and/or to this according to the linguistic context using the term, term " base station "
The base station or base station sub-system that overlay area is serviced.In the disclosure, based on context, term " base station " can with it is " small
Area ", " used interchangeably such as Node B " " eNodeB ".
Herein, method disclosed herein is described referring to the drawings.It should be appreciated, however, that shown in accompanying drawing
And sequence of steps described in this description is only schematical, without departing from the scope of the claims, this
A little method and steps and/or action can in a different order perform and be not limited to institute in shown in accompanying drawing and specification
The particular order of description.
In one or more exemplary designs, this can be realized with hardware, software, firmware or their any combination
The described function of application.If realized with software, can be stored the function as one or more instruction or code
On a computer-readable medium, transmit or as one or more instructions on computer-readable medium or code.Calculate
Machine computer-readable recording medium includes computer-readable storage medium and communication media, and wherein communication media includes contributing to computer program from one
Place is delivered to the arbitrary medium of another place.Storage medium can be that universal or special computer is addressable any available
Medium.This computer-readable medium can include, for example, but not limited to, RAM, ROM, EEPROM, CD-ROM or other CD
Storage device, disk storage equipment or other magnetic storage apparatus, either available for universal or special computer or it is general or
The form of the addressable instruction of application specific processor or data structure come code modules desired by carrying or storing it is any its
Its medium.It is also, any to connect the computer-readable medium that be known as.If for example, software be using coaxial cable,
The wireless technology of optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or such as infrared ray, radio and microwave etc is come from net
Stand, server or other remote sources transmission, then coaxial cable, optical fiber cable, twisted-pair feeder, DSL or such as infrared ray, wireless
The wireless technology of electricity and microwave etc is also included within the definition of medium.
General processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate can be used
Array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hardware components or for performing sheet
Any combination of function described in text come realize or perform various exemplary logical blocks with reference to described by the disclosure, module and
Circuit.General processor can be microprocessor, or, processor can also be any conventional processor, controller, micro-control
Device or state machine processed.Processor can also be embodied as the combination of computing device, for example, DSP and microprocessor combine, are multiple
The combination of microprocessor, one or more microprocessors and DSP core, or any other such structure.
Those of ordinary skill in the art are also understood that the various exemplary logics described with reference to embodiments herein
Block, module, circuit and algorithm steps can be implemented as electronic hardware, computer software or combination.In order to understand earth's surface
Show this interchangeability between hardware and software, various exemplary part, block, module, circuit and steps are enclosed above
General description has been carried out around its function.Hardware is implemented as this function and is also implemented as software, depending on specific
Using and apply design constraint over the whole system.Those skilled in the art can be directed to every kind of application-specific, to become
Logical mode realizes described function, still, this to realize that decision-making should not be interpreted as causing a departure from the scope of this disclosure.
The above description of the disclosure is used to enable any those of ordinary skill of this area to realize or using the present invention.It is right
For those of ordinary skill in the art, the various modifications of the disclosure will be apparent from, and generality defined herein
Principle can also be applied to other deformations in the case of without deviating from the spirit and scope of the disclosed invention.Therefore, the present invention simultaneously
Example as described herein and design are not limited to, but it is consistent with the widest scope of principle disclosed herein and novel features.
Claims (16)
1. one kind is used for the method that the power of idle mode subscriber device (UE) is saved, including：
Discontinuous reception (DRX) cycle of extension is configured, the DRX cycle of the extension is more than conventional DRX cycle and is more than system-frame
Number (SFN) cycle；
The DRX cycle of the extension is sent into UE to intercept using the DRX cycle of the extension at the idling mode for the UE
Beep-page message；
SFN periodic keys in the DRX cycle of the extension are counted；And
The SFN periodic keys counted are sent to UE, the paging frame for intercepting the beep-page message is determined for the UE
Number (PF).
2. the method as described in claim 1, wherein by SystemInformationBlockType1 (SIB1) message to UE
Send SFN periodic keys.
3. the method as described in claim 1, wherein being sent by MasterInformaitonBlock (MIB) message to UE
SFN periodic keys.
4. the DRX cycle of the method as described in claim 1, the wherein extension is arranged to the integral multiple in SFN cycles.
5. the DRX cycle of the method as described in claim 1, the wherein extension is arranged to 2 power times in SFN cycles.
6. the method as described in claim 1, wherein by adding to SystemInformationBlockType2 (SIB2) message
Add the information of the DRX cycle on the extension that the DRX cycle of the extension is sent into UE.
7. the method as described in claim 1, in addition to：
The DRX cycle of the extension will be set greater than for carrying out the time interval of cell reselection measurement to adjacent cell.
8. one kind is used for the device that the power of idle mode subscriber device (UE) is saved, including：
Extend discontinuous reception (DRX) period assignment unit, its be configured as configuration extension DRX cycle, DRX weeks of the extension
Phase is more than conventional DRX cycle and is more than System Frame Number (SFN) cycle；
Transmitter unit, its be configured as by the DRX cycle of the extension be sent to UE for the UE at the idling mode using should
The DRX cycle of extension carrys out listening paging message；And
Counting unit, its SFN periodic key being configured as in the DRX cycle to the extension count；
The SFN periodic keys that the transmitter unit is additionally configured to be counted are sent to UE, determine to be used to detect for the UE
Listen the paging frame (PF) number of the beep-page message.
9. one kind is used for the method that the power of idle mode subscriber device (UE) is saved, including：
Discontinuous reception (DRX) cycle of extension is obtained, the DRX cycle of the extension is more than conventional DRX cycle and is more than system-frame
Number (SFN) cycle；
Obtain the SFN periodic keys in the DRX cycle of the extension；And
According to the DRX cycle of the extension and the SFN periodic keys determine for listening paging message paging frame (PF) number and
Paging occasion (PO) subframe numbers.
10. the DRX cycle of method as claimed in claim 9, the wherein extension is the integral multiple in SFN cycles.
11. the DRX cycle of method as claimed in claim 9, the wherein extension is 2 power times in SFN cycles.
12. method as claimed in claim 9, wherein in the case of the periodic quantity in SFN cycles is 1024, according to following equation
To calculate sensing PO index i_s and determine PO subframe numbers according to predetermined subframe mapping table：
I_s=floor (UE_ID/N) mod Ns,
Wherein：
T is the DRX cycle of extension,
NB is a value of the selection from set (4T, 2T, T, T/2, T/4, T/8, T/16, T/32),
N=min (T, nB) refers to the number for the radio frames that PO be present,
Ns=max (1, nB/T) refers to the number of sub frames for being used for paging in a paging frame,
IMSI is UE international mobile subscriber identity, is provided in the form of decimal integer,
Floor is downward rounding operation symbol, and mod is modulo operator.
13. method as claimed in claim 9, wherein in the case of the periodic quantity in SFN cycles is 1024, determine No. PF bag
Include：
Calculate paging frame index number i_PF, wherein i_PF=(T/N) × (UE_ID mod in the DRX cycle of an extension
N),
SFN periodic key i_SFN in the DRX cycle of an extension are calculated according to the paging frame index number calculated, wherein
I_SFN=floor (i_PF/1024)+1,
Paging frame radio frame number PF_SFN, wherein PF_ in the SFN cycles are calculated according to the paging frame index number calculated
SFN=i_PF mod 1024, and
Both No. PF SFN periodic keys i_SFN and paging frame radio frame number PF_SFN by being calculated indicate,
Wherein：
T is the DRX cycle of extension,
NB is a value of the selection from set (4T, 2T, T, T/2, T/4, T/8, T/16, T/32),
N=min (T, nB) refers to the number for the radio frames that PO be present,
Ns=max (1, nB/T) refers to the number of sub frames for being used for paging in a paging frame,
IMSI is UE international mobile subscriber identity, is provided in the form of decimal integer,
Floor is downward rounding operation symbol, and mod is modulo operator.
14. method as claimed in claim 9, wherein the SFN periodic keys obtained in the DRX cycle of the extension include：
The SFN periodic keys counted from base station reception base station.
15. method as claimed in claim 9, wherein by receiving SystemInformationBlockType2 from base station
(SIB2) message and the information of the DRX cycle on the extension is therefrom extracted to obtain the DRX cycle of the extension.
16. one kind is used for the device that the power of idle mode subscriber device (UE) is saved, including：
Discontinuous reception (DRX) cycle acquiring unit is extended, it is configured as the DRX cycle for obtaining the extension, the DRX of the extension
Cycle is more than conventional DRX cycle and is more than System Frame Number (SFN) cycle；And
Determining unit, it is configured as obtaining the SFN periodic keys in the DRX cycle of the extension, and according to the extension
DRX cycle and the SFN periodic keys determine the paging frame (PF) number and paging occasion (PO) subframe for listening paging message
Number.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310118339.7A CN104105177B (en) | 2013-04-06 | 2013-04-06 | The method and apparatus that power for idle mode subscriber device is saved |
| TW103111446A TW201501558A (en) | 2013-04-06 | 2014-03-27 | Method and apparatus for power saving of idle mode user equipments |
| PCT/IB2014/000797 WO2014162205A2 (en) | 2013-04-06 | 2014-04-03 | Method and apparatus for power saving of idle mode user equipments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310118339.7A CN104105177B (en) | 2013-04-06 | 2013-04-06 | The method and apparatus that power for idle mode subscriber device is saved |
Publications (2)
| Publication Number | Publication Date |
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| CN104105177A CN104105177A (en) | 2014-10-15 |
| CN104105177B true CN104105177B (en) | 2017-12-12 |
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| CN201310118339.7A Active CN104105177B (en) | 2013-04-06 | 2013-04-06 | The method and apparatus that power for idle mode subscriber device is saved |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104105177B (en) |
| TW (1) | TW201501558A (en) |
| WO (1) | WO2014162205A2 (en) |
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|---|---|---|---|---|
| CN107113642B (en) * | 2015-01-15 | 2020-03-17 | 索尼公司 | Terminal operating in wireless communication system and control method thereof |
| WO2016115739A1 (en) * | 2015-01-23 | 2016-07-28 | 华为技术有限公司 | Power saving method and device for user equipment |
| US10085300B2 (en) * | 2015-02-16 | 2018-09-25 | Qualcomm Incorporated | Connected mode extended discontinuous reception |
| US10514746B2 (en) * | 2015-03-10 | 2019-12-24 | Acer Incorporated | Device and method of handling power saving |
| EP3269182B1 (en) * | 2015-03-13 | 2021-08-11 | Intel Corporation | Mobility management entity, user equipment and method to support extended discontinuous reception mechanism |
| RU2682001C1 (en) * | 2015-03-24 | 2019-03-14 | Телефонактиеболагет Лм Эрикссон (Пабл) | Methods and device to control information access, providing access to a wireless communication device in a wireless communications network |
| EP3280191B1 (en) * | 2015-04-03 | 2019-03-06 | NTT DoCoMo, Inc. | Base station and user device |
| US10045394B2 (en) * | 2015-05-04 | 2018-08-07 | Qualcomm Incorporated | Techniques for paging in extended discontinuous reception |
| CN106455015A (en) * | 2015-08-10 | 2017-02-22 | 北京信威通信技术股份有限公司 | Paging processing method in super long DRX mode |
| WO2017051502A1 (en) * | 2015-09-21 | 2017-03-30 | Sharp Kabushiki Kaisha | Systems and methods for paging control |
| JP6757414B2 (en) * | 2016-02-01 | 2020-09-16 | テレフオンアクチーボラゲット エルエム エリクソン（パブル） | Methods and equipment for cell verification under UE eDRX |
| WO2017171454A1 (en) * | 2016-03-31 | 2017-10-05 | Samsung Electronics Co., Ltd. | Methods for determining paging occasions in edrx cycle and monitoring paging occasions based on cel |
| CN107404771B (en) * | 2016-05-19 | 2020-02-11 | 展讯通信（上海）有限公司 | Communication terminal and method for requesting to expand discontinuous reception parameters |
| CN108307320B (en) * | 2016-08-25 | 2021-03-19 | 展讯通信（上海）有限公司 | Method, device and user equipment for discontinuously receiving cell broadcast service message |
| GB2555082A (en) * | 2016-09-30 | 2018-04-25 | Nec Corp | Communications system |
| GB2577316B (en) * | 2018-09-21 | 2020-09-16 | Tcl Communication Ltd | Paging in a cellular network |
| CN111867018B (en) * | 2019-04-30 | 2022-09-23 | 华为技术有限公司 | Communication method, device and system |
| WO2021159395A1 (en) * | 2020-02-13 | 2021-08-19 | 北京小米移动软件有限公司 | Power saving method and apparatus, device, and readable storage medium |
| CN115668999A (en) * | 2020-05-20 | 2023-01-31 | 深圳传音控股股份有限公司 | Method for determining paging cycle, method and equipment for configuring paging cycle, and readable storage medium |
| CN116963198A (en) * | 2022-04-19 | 2023-10-27 | 华为技术有限公司 | Communication method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011087233A2 (en) * | 2010-01-12 | 2011-07-21 | Samsung Electronics Co., Ltd. | Method and apparatus for supporting discontinuous reception operation in mobile communication system |
| KR101720334B1 (en) * | 2010-01-12 | 2017-04-05 | 삼성전자주식회사 | Method and apparatus for supporting discontinuous reception operation in mobile communication system |
| EP2369890A1 (en) * | 2010-03-26 | 2011-09-28 | Panasonic Corporation | Connection peak avoidance for machine-type-communication (MTC) devices |
| CN102387563B (en) * | 2010-08-26 | 2015-05-27 | 华为技术有限公司 | Service control method of machine type communication equipment, and related device and system |
| CN102917444B (en) * | 2011-08-01 | 2016-08-17 | 华为技术有限公司 | The method and device of discontinuous reception under idle condition |
| US20130044659A1 (en) * | 2011-08-16 | 2013-02-21 | Renesas Mobile Corporation | Wireless Devices and Base Stations and Methods of Operating |
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2013
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2014162205A2 (en) | 2014-10-09 |
| CN104105177A (en) | 2014-10-15 |
| WO2014162205A3 (en) | 2015-02-26 |
| TW201501558A (en) | 2015-01-01 |
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Address after: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |