CN101322425A - Method and apparatus for detecting adverse channel conditions and conserving power - Google Patents
Method and apparatus for detecting adverse channel conditions and conserving power Download PDFInfo
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Abstract
A wireless device detects for an adverse channel condition, which may be (1) a frequent out of service (FOOS) condition indicative of frequent in and out of service or (2) an unbalanced forward/reverse link condition indicative of unbalanced coverage for the forward and reverse links. A FOOS condition may be detected based on an average in-service time, the number of lost system connections, the number of systems to which connections have been made, the rate of change for the systems, the altitude of the wireless device, and/or other parameters. An unbalanced forward/reverse link condition may be detected based on the average in-service time, the number of system access failures, and/or other parameters. The wireless device performs at least one action to conserve battery power if an adverse channel condition is detected. The action(s) may include performing system acquisition less frequently, disabling system registration, performing registration less frequently, and/or going to sleep.
Description
The present invention advocates the 60/726th of being entitled as of on October 12nd, 2005 application " (FOOS) detection algorithm of frequently not working (FrequentOut of Service (FOOS) Detection Algorithm) ", the priority of No. 471 U.S. Provisional Application cases, described application case transfer this assignee and incorporate this paper into way of reference.
Technical field
The present invention relates generally to communication, and more particularly relates to the technology of the power of battery that is used for saving wireless device.
Background technology
Wireless communication system through widespread deployment to be used to provide for example various communication work such as voice, grouped data, video, broadcasting, message transmission.These systems can support the multi-address system of a plurality of user's communications by sharing the available system resource.The example of this type of multi-address system comprises code division multiple access (CDMA) system, time division multiple access (TDMA) system and frequency division multiple access (FDMA) system.
Wireless device (for example, cellular phone) may be able to receive the work from one or more wireless systems.In case energising, wireless device is just searched for its system that can therefrom receive work.If the system of finding, wireless device can be registered to system so.Wireless device then can be effectively and system communication, or enter idle mode when not needing to communicate by letter.If wireless device loses system subsequently, it enters (OOS) state of not working and attempts obtaining system according to the OOS program so.The bootable wireless device search system of this OOS program, and if obtain new system, just to the registration of new system.
Wireless device may obtain system but lose fast in the environment of system and operate at it.In this environment, wireless device may consume a large amount of powers of battery and attempt obtaining system.Exhausting in a large number of this power of battery reduced stand-by time and air time, and this is highly undesirable.
Therefore need to alleviate in this technology because the technology of a large amount of battery power consumptions that the OOS condition causes.
Summary of the invention
This paper describes the technology that is used for there being the saving power of battery under the situation of unfavorable channel condition.Wireless device detects disadvantageous channel condition, described disadvantageous channel condition can be (1) indication frequent operation and idle (FOOS) condition of frequently not working, (2) indication unbalanced forward/reverse link condition that the imbalance of forward direction and reverse link is covered, or (3) certain other harmful operating condition.The number of the number that can connect based on average operation time for example, the system of losing, the system that has connected, the change speed of described system, the various parameters such as height of described wireless device detect the FOOS condition, and are as mentioned below.Also can detect unbalanced forward/reverse link condition based on for example various parameters such as number of average operation time, system's access failure.If detect disadvantageous channel condition, just carry out the action that at least one saves the power of battery.Described battery save action can comprise executive system search more continually and obtain, the system that stops using registration, carry out more continually registration, enter dormancy etc.
Various aspects of the present invention and embodiment are hereinafter described in more detail.
Description of drawings
In conjunction with will more understanding feature of the present invention and character the embodiment of graphic statement, graphic middle same reference character is correspondingly discerned all the time from hereinafter.
Fig. 1 shows wireless communication system.
Fig. 2 shows the state diagram of layer 3 treatment state among the IS-2000.
Fig. 3 shows the table of the information that is used for the FOOS detection.
Fig. 4 shows the process that is used to alleviate unfavorable channel condition.
Fig. 5 shows the process that is used to alleviate FOOS.
Fig. 6 shows the block diagram of wireless device.
Embodiment
This paper uses word " exemplary " to represent " serving as example, example or explanation ".Any embodiment or design that this paper is described as " exemplary " all not necessarily are interpreted as than other embodiment or design preferred or favourable.
Detection described herein and power-saving technology can be used for various wireless communication systems, for example cdma system, tdma system, FDMA system, quadrature FDMA (OFDMA) system or the like.But cdma system embodiment such as radiotechnicss such as cdma2000, W-CDMA.Cdma2000 is contained IS-2000, IS-856 and IS-95 standard.IS-2000 and IS-95 often are called CDMA 20001x or abbreviation " 1x ".But tdma system embodiment such as global system for mobile communications (GSM), digital advanced mobile phone system radiotechnicss such as (D-AMPS).D-AMPS is contained IS-136 and IS-54.These various radiotechnicss and standard are known in this technology.In the document of tissue that is " the 3rd generation partner program (3GPP) ", W-CDMA and GSM have been described.In the document of the tissue that is called " the 3rd generation partner program 2 (3GPP2) ", cdma2000 has been described.3GPP and 3GPP2 document be disclose available.For the sake of clarity, hereinafter specifically describe some aspect of described technology at cdma2000.
Fig. 1 shows wireless communication system 100, and it can be said system any one.For brevity, Fig. 1 only shows two wireless device 110a and 110b and two base station 120a and 120b.Each base station provides the communication at the specific geographical area to cover.The base station normally with the fixed station of wireless device, and also can be described as base station transceiver (BTS), Node B, access point etc.
Wireless device is dispersed in the whole system usually, and each wireless device can be fixing or moves.Among Fig. 1, wireless device 110a is on ground, and wireless device 110b aloft.Wireless device also can be described as travelling carriage, accesses terminal, subscriber equipment, terminal, subscriber unit etc.Wireless device can be cellular phone, PDA(Personal Digital Assistant), radio modem etc.Wireless device can any given time on forward direction and reverse link with zero, one or more base station communication.Forward link (or down link) refers to the communication link from the base station to the wireless device, and reverse link (or up link) refers to the communication link from the wireless device to the base station.
Wireless device also may be able to receive the signal from satellite 130.Satellite 130 can belong to the global position system of for example well-known global positioning system (GPS).Each gps satellite transmission is with the gps signal of information coding, and described information allows tellurian gps receiver to measure the time of advent of gps signal.Measurement to the gps satellite of enough numbers can be used for the accurately three-dimensional of estimating GPS receiver (3D) position.
Fig. 2 shows state Figure 200 of IS-2000 middle level 3 treatment states.Wireless device enters travelling carriage init state 210 when energising.At state 210, the wireless device selective system also attempts obtaining selecting system.In case the system of obtaining, wireless device just is converted to travelling carriage idle state 220.At state 220, wireless device can be carried out registration, receives or make a call, the transmission of reception or start message, and carries out other action.In case any one in initial these actions, wireless device just is converted to system's access state 230.
At state 230, wireless device forward direction and oppositely on the shared channel with the systems exchange signaling.If required action is registration, wireless device sends Access Probe and monitors affirmation from system to system so.Wireless device completing successfully the registration after return state 220, or when registration failure return state 210.If required action relates to effective call, wireless device proceeds to the travelling carriage state of a control 240 to Traffic Channel so, and and system communication.Wireless device is return state 210 or 220 when end call.Wireless device can be when not having other task to carry out from other state-transition to state 220, and be converted to state 210 when failing at connecting system or with system communication.3 of in February, 2004 distribution is entitled as the processing of having described among the GPP2 C.S0005-D of " upper strata of cdma2000 spread spectrum system (layer 3) signaling standard D version (Upper Layer (Layer 3) SignalingStandard for cdma2000 Spread Spectrum Systems Release D) " 1.0 editions state shown in Figure 2, and it is available for disclosing.
As shown in Figure 2, wireless device attempts obtaining system when it is at first switched on.Wireless device can be kept optimum roaming list (PRL), " forbidding " system that " permission " system that its identification wireless device should use and (according to circumstances) wireless device should not use.Wireless device can be selected a system and attempt obtaining system from PRL is each.System obtain may be tuned to the frequency band that uses of system, by the pilot tone of base station transmits, receive the Sync Channel Message (SCHM) of carrier system sequential in the search system, be synchronized with the sequential of each base station of being found, from base station paging receiving channel or the like.
After obtaining system, wireless device can be attempted the registration to system, but makes its paging receiving also initiate or receipt of call.For registration, wireless device is carried out the Access Probe program transmitting Access Probe on access channel, and attempts connecting system.How the appointment of Access Probe program is for example transmitted Access Probe and with which kind of power stage is transmitted in the time should sending Access Probe.Wireless device can transmit one or more Access Probe Sequences, till receiving the confirmation from system or having sent the Access Probe of maximum number.After system registration, wireless device can be effectively and system communication, or turn back to idle state when not needing to communicate by letter.
The wireless device consume battery power comes executive system to obtain and register.Obtain for system, the wireless device consume battery power is handled the signal that receives on the forward link.For registration, the wireless device consume battery power is transmitted Access Probe on reverse link.
After obtaining system, wireless device may be owing to a variety of causes is lost work.For instance, wireless device may be owing to fail or other harmful condition is lost work.Wireless device also may move into the covering cavity of system coverage area or lose work when outside at it.In either case, in case lose work, wireless device just can enter (OOS) state of not working, and can carry out the OOS program to attempt obtaining system.The bootable wireless device of OOS program attempts obtaining any one of licensing system among the PRL.
Wireless device may run into frequently (FOOS) condition of not working.When wireless device experience frequent operation with do not work and fail to remain connected to system during sufficiently long time, this condition generation.Wireless device may obtain system, immediately lose system, obtain same system or another system fast, and lose this system once more after the short time.For example (for example, in the time of aloft), when wireless device is in the covering boundary etc., the FOOS condition may occur when wireless device is moving with very big speed.
Wireless device also may run into unbalanced forward/reverse link condition.When wireless device on the forward link in system coverage area but on the reverse link outside the overlay area time, this condition takes place.Therefore, wireless device can receive the forward link system from system, but system can not receive by the Access Probe of wireless device transmission with connecting system.When not receiving the affirmation from system when the Access Probe that sends maximum number, possible generation systems access failure.Because the frequent system access failure that the transmission of the Access Probe of maximum number causes may be represented bad reverse link condition.
For FOOS and uneven forward/reverse link condition, wireless device can consume a large amount of powers of battery and attempt connecting system.Therefore, when wireless device ran in these conditions any one, battery life may be demoted rapidly.
1.
The detection of unfavorable channel condition
The technology of the unfavorable channel condition that is used for test example such as FOOS and uneven forward/reverse link condition is described herein.The technology that is used for economizing in any one time that detects these conditions battery power is also described.These technology can alleviate because the adverse effect that unfavorable channel condition causes.
In the embodiment that FOOS detects, detect the FOOS condition based on average operation time (AIST) and system's linking number of losing.Operating time (IST) is that wireless device remains on the duration in the system, and also can be described as time in the system, system's time of staying or the like.Operating time may be defined as the duration of losing the time of system from the time that wireless device obtains system to wireless device.Can for example when paging channel is successfully decoded or when satisfying certain other standard, declare that system obtains.Can be for example can't find pilot tone or can't the decoding paging channel in a certain period or when satisfying certain other standard, declare system loss at wireless device.Can also otherwise define the operating time.Average operation time is that wireless device remains on the average duration in the system.
Wireless device can start timer when obtaining system.When losing system, wireless device can stop timer and connect definite operating time at nearest system.System connect refer to that wireless device remains in the system and can from system's reception work in abutting connection with period.Wireless device can the following calculating average operation time:
AIST (n)=(1-K) AIST (n-1)+KIST (n) equation (1)
Wherein n is the index that system connects,
IST (N) is the operating time that n system connects,
AIST (n) is the average operation time that n system connects, and
K is a filter gain.
Index n connects for first system can be initialized as 1, and can increase progressively 1 for each follow-up system connection.AIST (n) can be initialized as 0 before first system connects, and can upgrade after each system connects.When losing system after n system connects, the average operation time can be calculated as the weighted sum of the operating time IST (n) that the average operation time AIST (n-1) of last system connection is connected with current system.The amount of filter gain K decision equalization, and scope is from 0 to 1, or 0＜K＜1.Bigger K is corresponding to less equalization, and less K is corresponding to more equalization.
Equation (1) is at infinite impulse response (IIR) filter.Also can calculate the average operation time based on the filter or the equalization scheme of certain other type.
Wireless device can following identification FOOS condition:
Wherein L detects the minimal amount that required system connects for FOOS, and AIST
THBe to be used for the threshold value that FOOS detects.
Can select K, L and AIST substantially
THTo provide good FOOS to detect performance.In one embodiment, K is set at 1/8, and L is set at 1/K, and AIST
THBe set at 10 seconds.K, L and AIST
THAlso can be set at other value.K, L and AIST
THCan be fixed value.Perhaps, K, L and AIST
THIt can be the configurable value that for example to select based on the available battery power at wireless device place.For instance, when the power of battery was low, bigger value can be used for K, and less value can be used for L, and/or bigger value can be used for AIST
TH, vice versa.
In the embodiment shown in the equation (2), connect if carried out the system of enough numbers (L at least), and the average operation time is less than or equal to AIST
THThreshold value just detects the FOOS condition.Connect if carried out the system of not enough number (being less than L), or the average operation time is greater than AIST
THThreshold value does not just detect the FOOS condition.
Equation (2) uses the average operation time to detect the FOOS condition.Whether the average operation time is the parameter of being correlated with, meaningful with initiation or receipt of call because it can be used for determining to obtain system.Equation (2) also in FOOS detects using system linking number n guarantee to have enough input samples to be used for FOOS detection filter device.Also can use other parameter to detect the FOOS condition, the Height Estimation of for example on average do not work (OOS) duration, wireless device, the speed estimation of wireless device etc.
Wireless device can experience FOOS in all cases.When wireless device is FOOS land condition may occur on ground and when covering the border.When wireless device aloft when (the common cause of FOOS), FOOS condition aloft may appear.Under situation aloft, wireless device is observed many different systems in short-term, and this causes the low operating time.Wireless device can detect different FOOS conditions, and can carry out different tasks so that save the power of battery.
In another embodiment that FOOS detects, detect different FOOS conditions based on average operation time, the observed number of systems of wireless device and the frequency of observing new system.In case the system of obtaining, time started that wireless device connects with regard to the identifier of storage system, storage and also start timer to follow the tracks of the time quantum that wireless device is connected to system.For cdma2000, each system is by unique system banner (SID) identification, and given intrasystem each less network is by only network sign (NID) identification.The less network of among the cdma2000 each therefore by SID/NID to identification uniquely.
When wireless device since bad forward link (for example, losing of paging channel) or bad reverse link (for example, when the transmission of the Access Probe of maximum number) losing system, wireless device stops timer and connects definite operating time IST (n) at nearest system.If owing to system's access failure is lost system, wireless device is also set a flag so, described system access failure also can be described as maximum Access Probe (MAP) failure.
Fig. 3 shows the embodiment of the table 300 of storing the link information that is used for the FOOS detection.Connect for each system, the SID/NID that wireless device can be stored T start-up time (n) of connection, the operating time IST (n) that connects, system is right, and whether runs into system's access failure.Substantially, link information can comprise the information that detects relevant any kind with FOOS.
After system loss, wireless device upgrades average operation time AIST (n) with the operating time IST (k) that nearest system connects, for example shown in the equation (1).If the average operation time is greater than AIST
THThreshold value does not detect the FOOS condition so.On the contrary, if the average operation time less than AIST
THThreshold value, wireless device is counted the right number of unique SID/NID so, and it is expressed as N.Wireless device also calculates SID/NID and changes speed, and it is expressed as R.In one embodiment, wireless device determines whether last M system connects is right at different SID/NID, and if, so SID/NID is changed rate calculations and is the average time between system connects, or R=[T (N)-T (N-M+1)]/(M-1).M can be set at 3 or certain other value.In another embodiment, SID/NID change speed can be calculated as R=[T (n)-T (n-M+1)]/N
U, N wherein
UIt is the right number of unique SID/NID during last M system connects.Also can otherwise calculate SID/NID and change speed.
Wireless device can the different FOOS condition of following detection:
N wherein
THBe SID/NID logarithm purpose threshold value, and
R
THIt is the threshold value that SID/NID changes speed.
Substantially, can select N
TH, R
THAnd AIST
THTo provide good FOOS to detect performance.In one embodiment, N
THBe set at 3, R
THBe set at 3, and AIST
THBe set at 60 seconds.N
TH, R
THAnd AIST
THAlso can be set at other fixes or configurable value.
In the embodiment shown in the equation (3), if the average operation time be less than or equal to AIST
THThreshold value, and the right number of SID/NID is less than N
THThreshold value or SID/NID change speed less than R
THThreshold value just detects FOOS land condition.Under the situation of FOOS land, wireless device can not observed many different systems and can not change system rapidly, even wireless device experiences frequent work and do not work.
In the embodiment shown in the equation (3), if the average operation time be less than or equal to AIST
THThreshold value, and the right number of SID/NID is more than or equal to N
THThreshold value and SID/NID change speed more than or equal to R
THThreshold value just detects FOOS condition aloft.At FOOS aloft under the situation, wireless device is because the frequent work of its experience and do not work and observe many different systems, and changes system rapidly.
Equation (3) is showed and to be detected FOOS land and the FOOS embodiment of condition aloft.Also can be otherwise and/or with these FOOS conditions of other parameter detecting.
In another embodiment, the 3-D location estimation based on wireless device detects FOOS condition aloft.Wireless device can have independently GPS ability, and may derive the 3-D location estimation of himself based on the measured value of the gps satellite (being generally 4 satellites) of enough numbers.Latitude, longitude and the height of 3-D location estimation indication wireless device.Wireless device can following identification FOOS condition aloft:
Wherein Alt is the height of wireless device, and
Alt
THBe to be used for the threshold value that FOOS detects aloft.
In the embodiment shown in the equation (4), if the height of wireless device surpasses Alt
THThreshold value just detects FOOS condition aloft.Alt
THThreshold value can be set at 2500 feet or certain other value.
In another embodiment, the combination based on the embodiment shown in equation (3) and (4) detects FOOS condition aloft.Table 1 is listed some FOOS state and at each FOOS standard of state aloft aloft.
Table 1
| Average operation time | The number that SID/NTD is right | SID/NID changes speed | Highly | FOOS-is state aloft |
| AIST(n)≤AIST TH | N≥N TH | R≥R TH | N/A | Detect FOOS-condition but confirm aloft |
| AIST(n)≤AIST TH | N≥N TH | R≥Rth | Alt≥Alt TH | Detect FOOS-condition and confirming aloft |
In the embodiment shown in the table 1, if it is unavailable to satisfy the height at the third part of " aloft " and wireless device of equation (3), just detect FOOS condition but do not confirm aloft.If wireless device is not supported independently GPS feature, or support independently the GPS feature but do not have the satellite of enough numbers to use that so described height may be unavailable.Surpass Alt if satisfy the third part of equation (3) and the height of wireless device
THThreshold value just detects FOOS condition aloft.If AIST (n)＞AIST
TH, or Alt＜Alt
THOr N＜N
TH, or R＜R
TH, so FOOS aloft condition be false.
In one embodiment, the number based on average operation time and system's access failure detects unbalanced forward/reverse link condition.Wireless device can be to last T
MThe number of the system's access failure in second is counted.Wireless device can be followed the unbalanced forward/reverse link condition of following identification:
Wherein M is last T
MThe number of the system's access failure in second, and
M
THBe to be used for the threshold value that uneven forward/reverse link detects.
Substantially, can select T
MAnd M
THSo that the good detection performance to be provided.In one embodiment, T
MBe set at 60 seconds, and M
THBe set at 3.T
MAnd M
THAlso can be set at other fixes or configurable value.
In the embodiment shown in the equation (5), if the average operation time be less than or equal to AIST
THThreshold value and last T
MThe number of the system's access failure in second is equal to or greater than M
THThreshold value just detects unbalanced forward/reverse link condition.Otherwise, do not detect unbalanced forward/reverse link condition.
Substantially, wireless device for example detects single FOOS condition shown in the equation (2), or for example detects different FOOS conditions shown in the equation (3).Wireless device also for example detects unbalanced forward/reverse link condition shown in the equation (5).Wireless device can be based on above-mentioned parameter and/or other parameter detecting FOOS and unbalanced forward/reverse link condition.
2.
The power save action
When detecting the unbalanced forward/reverse link condition of FOOS conditioned disjunction, wireless device just can be declared disadvantageous channel condition.If do not detect disadvantageous channel condition, wireless device is searched for and is obtained with the normal mode executive system in oos state so.
If detect the FOOS condition, so wireless device can carry out in the following action any one or all so that save the power of battery:
Executive system is not searched for and is obtained more continually,
Stop using and register or restriction registration trial, and
Enter dormancy.
Wireless device can be attempted the system that do not obtain more continually when detecting the FOOS condition.Under the FOOS situation, wireless device did not keep the sufficiently long time to use any communication work (for example, initiation or receipt of call) before it loses system once more in system.Therefore, wireless device is made great efforts and searched for any system continually is nonsensical, because wireless device may be lost system once more apace.Wireless device can be then when detecting the FOOS condition trial system more continually obtain (with low duty cycle or with than low rate).When detecting the FOOS condition, the time interval that system obtains between the trial can enlarge.When each wireless device was lost system fast, this time interval can increase progressively expansion.Wireless device also can be searched for less system and/or executive system search in less search volume.
Wireless device also can be stopped using when detecting the FOOS condition and be registered or restriction registration trial, and this may be useful when wireless device is being crossed over system or network boundary.In one embodiment, as long as detect the FOOS condition, wireless device is just stopped using fully and is registered.In another embodiment, when detecting the FOOS condition, wireless device is attempts registration more continually.For instance, wireless device can be no more than once in each predetermined period of time (for example, 20 minutes) attempts registration.This cycle time can be fixing or configurable, for example determines based on the available power of battery in wireless device place.Attempt being also referred to as registration and retreat by before attempting registration next time, waiting for one period and limit registration.Also can carry out registration according to system parameters retreats.
Wireless device can enter dormancy and continue the specific period when detecting the FOOS condition.Can detect dormancy period based on the available battery power at for example wireless device place, system's linking number of losing or the like various factors.When dormancy, wireless device can make down circuitry as much as possible so that save the power of battery.
Wireless device can be carried out different actions at different FOOS conditions.In addition, wireless device can at different FOOS conditions by different way (for example, dormancy continue different duration) carry out given action.
In one embodiment, if detect FOOS land condition, wireless device is carried out following action so:
The restriction registration is attempted, and
Enter dormancy.
In one embodiment, if in equation (3) or (4) if in detect FOOS aloft conditioned disjunction detect FOOS condition but confirm (table 1) aloft, wireless device is carried out following action so:
Stop using and register, and
Enter dormancy and continue short period.
In one embodiment, if detect FOOS condition and confirm (table 1) aloft, wireless device is carried out following action so:
Stop using and register,
Enter dormancy and continue long period,
When waking up from dormancy, bypass system obtains but upgrades location estimation and verify height,
If height is less than Alt
TH_low, just executive system is obtained, and
If GPS loses, just at detecting but unacknowledged FOOS aloft condition carry out action.
Can select Alt
TH_lowThreshold value is to provide superperformance.In one embodiment, Alt
TH_lowBe set at 500 feet.Alt
TH_lowAlso can be set at other fixes or configurable value.
In one embodiment, if detect unbalanced forward/reverse link condition, wireless device is carried out following action so:
The restriction registration is attempted.
Too much system's access failure may be because bad reverse link condition.In the case, wireless device can the normal mode executive system search (because forward link may be good) but can be more continually attempts registration so that save the power of battery.
Substantially, can carry out any group power save action at any unfavorable channel condition.The action of carrying out also be can be depending on the out of Memory that the available power of battery in wireless device place and/or wireless device can be used.
Fig. 4 shows the embodiment of the process 400 be used to alleviate unfavorable channel condition.Detect unfavorable channel condition (square frame 412).Unfavorable channel condition can be indication frequent operation and idle FOOS condition.Unfavorable channel condition also can be the uneven forward/reverse link condition of the imbalance covering of indication forward direction and reverse link.Can detect the FOOS condition based on the number of average operation time for example, system's linking number of losing, the system that connected, the change speed of system, the various parameters such as height of wireless device.Also can detect uneven forward/reverse link condition based on for example various parameters such as average operation time, access failure number.If detect unfavorable channel condition, just carry out the action (square frame 414) that at least one saves the power of battery.Power-saving action can comprise executive system search more continually and obtain, the system that stops using registration, carry out more continually registration, enter dormancy etc.
Fig. 5 shows the embodiment of the process 500 be used to alleviate FOOS.Detect frequent operation and the idle FOOS condition (square frame 512) of indication when ground.Frequent operation when detection is indicated aloft and idle the 2nd FOOS condition (square frame 514).The first and second FOOS conditions can be called FOOS land and FOOS condition aloft.Can detect the FOOS condition based on various parameters as mentioned above.If detect a FOOS condition, just carry out first group of action (square frame 516) of saving the power of battery.If detect the 2nd FOOS condition, just carry out second group of action (square frame 518) of saving the power of battery.Every group of action can comprise any one in the action of above-mentioned power-saving.Described two groups can comprise identical or different power-saving action.Also can carry out given action by different way at two FOOS conditions.
Fig. 6 shows the block diagram of the embodiment of wireless device 110, and wireless device 110 can be any one in the wireless device shown in Figure 1.On transmission path, encoder 622 receives the data and the signaling that will be sent by wireless device 110, and handles (for example, format, coding and staggered) described data and signaling according to suitable encoding scheme.Modulator (Mod) 624 is further handled (for example, modulation and scramble) encoded data and signaling and is produced data chips.Substantially, the processing of encoder 622 and modulator 624 by data send institute at system determine for example cdma2000, W-CDMA, GSM etc.Transmitter (TMTR) 632 is regulated (for example, being converted to simulation, filtering, amplification and frequency up-converted) data chips and is produced the reverse link signal of transmitting via antenna 634.
On RX path, antenna 634 receives the forward link signal of base station transmits and the signal of gps satellite transmission.Receiver (RCVR) 636 is regulated the signal that (for example, filtering, amplification, frequency down-converts and digitlization) receive from antenna 634 and data sample is provided.Demodulator (Demod) 626 is handled (for example, separating scramble and demodulation) data sample and sign estimation is provided.Decoder 628 is handled (for example, release of an interleave and decoding) sign estimation and is provided through decoded data.Substantially, the processing complementation of the modulator at the processing of demodulator 626 and decoder 628 and base station place and encoder execution.Encoder 622, modulator 624, demodulator 626 and decoder 628 can be implemented by modem processor 620.
The operation of the various processing units in controller/processor 640 guiding wireless device 110 places.The process 400 of Fig. 4 and/or the process 500 of Fig. 5 can be implemented or guide to controller/processor 640.Memory 642 storages are used for the program code and the data of wireless device 110.Memory 642 also can be stored the link information that is used to detect FOOS and uneven link condition, for example as shown in Figure 3.Timer 644 is followed the tracks of the time quantum that wireless devices 110 are connected to system, and can be resetted and stopped by controller/processor 640.
Can implement technology described herein by various means.For instance, these technology may be implemented in hardware, firmware, software or its combination.For the hardware embodiment, the processing unit that is used to detect disadvantageous channel condition and carries out the power-saving action may be implemented in one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, electronic installation, other through design with the electronic unit or its combination of carrying out function described herein in.
For firmware and/or software implementation scheme, the module of available execution function described herein (for example, process, function etc.) is implemented described technology.Firmware and/or software code can be stored in the memory (for example, the memory 642 of Fig. 6) and by processor (for example, processor 640) and carry out.Memory may be implemented in the processor or processor outside.
The those skilled in the art provides the content of the foregoing description of the embodiment that discloses, so that can make or use the present invention.The those skilled in the art will understand the various modifications to these embodiment easily, and under the situation that does not break away from the spirit or scope of the present invention, the General Principle that this paper defined can be applicable to other embodiment.Therefore, do not wish that the present invention is confined to the embodiment that this paper shows, but wish that the present invention meets and principle disclosed herein and novel feature the widest consistent scope.
Claims (25)
1. equipment, it comprises:
At least one processor, its be configured to detect the indication frequent operation and do not work or forward direction and reverse link on the unfavorable channel condition that covers of imbalance, and if detect described unfavorable channel condition, just carry out the action of at least one saving power of battery; And
Memory, it is coupled to described at least one processor.
2. the average operation time of the average duration that equipment according to claim 1, wherein said at least one processor are configured to determine that indication mechanism connects, and detect described unfavorable channel condition based on the described average operation time.
3. equipment according to claim 2, wherein said at least one processor are configured to determine the number that the system of losing connects, and the number that further connects based on described system of losing detects described unfavorable channel condition.
4. equipment according to claim 2, wherein said at least one processor are configured to the number of definite system that has connected, and further detect described unfavorable channel condition based on described number of systems.
5. equipment according to claim 4, wherein said at least one processor are configured to determine the change speed of the system connected, and further detect described unfavorable channel condition based on the described change speed of described system.
6. equipment according to claim 1, wherein said at least one processor are configured to determine the number of system's access failure, and detect described unfavorable channel condition based on described system access failure number.
7. equipment according to claim 1, wherein said at least one processor are configured to determine the height of described equipment, and detect described unfavorable channel condition based on described height.
8. equipment according to claim 1, wherein said at least one processor are configured to when detecting described unfavorable channel condition more continually executive system and obtain.
9. equipment according to claim 1, wherein said at least one processor are configured to the system's registration of stopping using when detecting described unfavorable channel condition.
10. equipment according to claim 1, wherein said at least one processor are configured to executive system registration more continually when detecting described unfavorable channel condition.
11. equipment according to claim 1, wherein said at least one processor are configured to enter dormancy when detecting described unfavorable channel condition.
12. a method, it comprises:
Detect the indication frequent operation and do not work or forward direction and reverse link on the unfavorable channel condition of imbalance covering; And
If detect described unfavorable channel condition, just carry out the action that at least one saves the power of battery.
13. method according to claim 12, the described unfavorable channel condition of wherein said detection comprises:
Make up based on the change speed of the number of average operation time, the system that connected, described system, Height Estimation or its and to detect described unfavorable channel condition.
14. method according to claim 12, the described unfavorable channel condition of wherein said detection comprises:
Number based on average operation time and system's access failure detects described unfavorable channel condition.
15. method according to claim 12, the action of wherein said at least one saving power of battery comprise that executive system is obtained more continually, the system that stops using is registered, dormancy or its combination are registered, entered to executive system more continually.
16. an equipment, it comprises:
Be used to detect the indication frequent operation and do not work or forward direction and reverse link on the device of unfavorable channel condition of imbalance covering; And
Just carry out the device that at least one saves the action of the power of battery if be used for detecting described unfavorable channel condition.
17. equipment according to claim 16, the wherein said device that is used to detect described unfavorable channel condition comprises:
Be used for change speed, Height Estimation or it makes up the device that detects described unfavorable channel condition based on the number of average operation time, the system that connected, described system.
18. equipment according to claim 16, the wherein said device that is used to detect described unfavorable channel condition comprises:
Be used for detecting the device of described unfavorable channel condition based on the number of average operation time and system's access failure.
19. equipment according to claim 16, the action of wherein said at least one saving power of battery comprise that executive system is obtained more continually, the system that stops using is registered, dormancy or its combination are registered, entered to executive system more continually.
20. a processor readable media, it is used for storing and can operates to carry out the instruction of following operation at wireless device:
Detect the indication frequent operation and do not work or forward direction and reverse link on the unfavorable channel condition of imbalance covering; And
Just carry out the action that at least one saves the power of battery if detect described unfavorable channel condition.
21. processor readable media according to claim 20, and it is further used for storing and can operates to carry out the instruction of following operation:
Make up based on the number of the change speed of the number of average operation time, the system that connected, described system, Height Estimation, system's access failure or its and to detect described unfavorable channel condition.
22. an equipment, it comprises:
At least one processor, it is configured to detect at least one indication frequent operation and idle (FOOS) condition of frequently not working, and carries out the action of at least one saving power of battery during when detecting described at least one FOOS condition in any one; And
Memory, it is coupled to described at least one processor.
23. equipment according to claim 22, wherein said at least one processor is configured to detect frequent operation and the idle FOOS condition of indication when ground, frequent operation when detection is indicated aloft and idle the 2nd FOOS condition, if detect a described FOOS condition just carry out first group at least one save the action of the power of battery, if just and detect described the 2nd FOOS condition carry out second group at least one save the action of the power of battery.
24. equipment according to claim 22, wherein said at least one processor are configured to make up described at least one the FOOS condition that detects based on the change speed of the number of average operation time, the system that connected, described system, Height Estimation or its.
When 25. equipment according to claim 22, wherein said at least one processor are configured in detecting described at least one FOOS condition any one more continually executive system do not obtain, the system that stops using registration, executive system registration more continually, enter dormancy or its combination.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72647105P | 2005-10-12 | 2005-10-12 | |
| US60/726,471 | 2005-10-12 | ||
| US11/392,325 | 2006-03-28 |
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| Publication Number | Publication Date |
|---|---|
| CN101322425A true CN101322425A (en) | 2008-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006800454563A Pending CN101322425A (en) | 2005-10-12 | 2006-10-12 | Method and apparatus for detecting adverse channel conditions and conserving power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348219A (en) * | 2010-08-04 | 2012-02-08 | 电信科学技术研究院 | Minimization drive test (MDT) processing method based on coverage hole and equipment |
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2006
- 2006-10-12 CN CNA2006800454563A patent/CN101322425A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348219A (en) * | 2010-08-04 | 2012-02-08 | 电信科学技术研究院 | Minimization drive test (MDT) processing method based on coverage hole and equipment |
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