CN103609056A - Method for mitigating outages in heterogeneous networks - Google Patents
Method for mitigating outages in heterogeneous networks Download PDFInfo
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- CN103609056A CN103609056A CN201180018352.4A CN201180018352A CN103609056A CN 103609056 A CN103609056 A CN 103609056A CN 201180018352 A CN201180018352 A CN 201180018352A CN 103609056 A CN103609056 A CN 103609056A
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Abstract
The present invention provides a method for mitigating outages in wireless communication systems using feedback for control channels formed by aggregating groups of resource blocks or resource elements, the method. One embodiment of the method includes generating control channel feedback at user equipment. The control channel feedback is generated using one or more measurements performed on signals received at the user equipment over a downlink control channel at a current aggregation level. The method also includes transmitting the control channel feedback over an uplink channel and using this information for the optimal implementation of cell range expansion by the network.
Description
Technical field
Relate generally to communication system of the present invention.More particularly, the present invention relates to wireless communication system.
Background technology
Legacy communications system is used one or more access nodes to provide with the network of one or more mobile nodes to be connected.Described access node can be called as access point, access network, base station, base station router, honeycomb, microcellulor, Pico cell etc.For example, according in the cellular communication system of universal mobile telecommunications service (UMTS) standard executable operations, one or multinode can be used for providing with the wireless network of mobile node and are connected.Described radio node can comprise cell phone, personal digital assistant, smart phone, word message equipment, global positioning system, navigation system, network interface unit, notebook, desktop computer etc.Developed and disposed polytype with some generations wireless communication system to provide with the network of mobile node, be connected.Example wireless communications comprise provide with the system of the wireless connections of microcellulor (for example, the system of wireless connections is provided according to standards such as IEEE 802.11, IEEE 802.15 or Wi-Fi) and the system (for example,, according to the system of third generation partner program standard-3GPP, 3GPP2-executable operations and/or according to the system of the standard executable operations such as IEEE802.16 and IEEE 802.20) with the wireless connections of macrocellular is provided.Disposed this type systematic of some generations, comprising the second generation (2G), the third generation (3G) and the 4th generation (4G).
The covering that different service suppliers provide in heterogeneous communication system may be intersected and/or be overlapping.For example, the radio access node of WLAN (wireless local area network) can provide and the associated microcellulor of cafe or the network of the mobile node in Pico cell connect, and described cafe is positioned at the overlay area of associated macrocellular of the base station of cellular communication system.As another example, a plurality of service suppliers' cell phone covers may be overlapping, therefore, and for example, when a service supplier implements 3G system, when another service supplier implements 4G system, mobile node can be used the wireless access technology access to wireless communication system in different generations.As another example, for example, when single service supplier disposes 3G system and is just progressively upgraded to 4G system, this single service supplier can use overlapping wireless access technology that covering is provided.
Network can indicate access node for example from a macrocellular, to be switched to overlapping microcellulor, even if the signal that macrocellular detected when described access node is better than the signal of microcellulor.This technology is called as honeycomb expansion, because it is by expanding the scope of microcellulor to user equipment applications deviation.Studies show that the honeycomb expansion in microcellulor/macrocellular environment has multiple advantage.For example, subscriber equipment (UE) is shifted or be switched to microcellulor from macrocellular can be increased the UE quantity of microcellulor service and can cause separated gain, thereby increases the total capacity of heterogeneous network.Can realize honeycomb selective enhancement function to improve the honeycomb degree of association, thus the non-homogeneous coverage optimization systematic function that the very different descending power sending by macrocellular and microcellulor causes.Therefore, by the honeycomb expansion in microcellulor, maximizing gain can be the tool that increases heterogeneous network operator usable spectrum.
Build honeycomb scalability gain model and conventionally suppose that macrocellular and microcellulor can not phase mutual interference.But, in the actual deployment of heterogeneous network, wish to exist and disturb between data channel and control channel.For example, interference between the control channel, using in overlapping macrocellular and microcellulor can cause increasing suspension because of control channel fault.Studies show that, when using honeycomb expansion for microcellulor, the suspension being caused by Physical Downlink Control Channel (PDCCH) fault may cause microcellulor to increase.Interference effect between overlapping honeycomb is strengthened in cochannel and overlapping deployment, because the control channel of macrocellular and microcellulor is shared identical frequency and/or time slot in overlay region.Control channel in this type of isomery deployment will stand a large amount of phase mutual interference, and these interference can cause control channel decoding failure and suspension.Unfortunately, widely distributed cochannel deployment is one possible (the being perhaps inevitable) response increasing expanding the bandwidth intensive application of existing network capacity.
Summary of the invention
Disclosed theme relates to the impact that solves above-mentioned one or more problems.Content simplified summary below disclosed theme, to the basic understanding to some aspect of disclosed theme is provided.This summary is not the general overview to disclosed theme.It is not intended to identify the main or crucial key element of disclosed theme, or describes the scope of disclosed theme.Its sole purpose is to provide some concept to using as the prelude in greater detail of introducing below with simple form.
In one embodiment, be provided for reducing the method for suspension in wireless communication system.An embodiment of described method is included in and on subscriber equipment, generates control channel feedback.Described control channel feedback is used one or more measurements of the signal execution receiving on described subscriber equipment for the down control channel by pre-polymerization grade to generate.Described method also comprises by the up channel feedback that transmits control channel.
In another embodiment, be provided for reducing the method for suspension in wireless communication system.This embodiment is included in the control channel receiving from subscriber equipment on access node and feeds back.At least one of at least one signal that the use of described control channel feedback sends from described access node for the down control channel by pre-polymerization grade measured generation.Described method also comprises based on described control channel to be fed back and determines whether to revise when pre-polymerization grade.
In another embodiment, be provided for reducing the method for suspension in wireless communication system.This embodiment is included in the control channel receiving from subscriber equipment on access node and feeds back.At least one of at least one signal that the use of described control channel feedback sends from described access node for the down control channel by pre-polymerization grade measured generation.Described method also comprises that based on described control channel feedback, determining whether to carry out honeycomb expands.
Accompanying drawing explanation
Disclosed theme can be understood with reference to description below by reference to the accompanying drawings, and in described accompanying drawing, identical label represents identical element, and in described accompanying drawing:
Fig. 1 conceptually illustrates an exemplary embodiment of wireless communication system;
Fig. 2 conceptually illustrates an exemplary embodiment of channel architecture;
Fig. 3 conceptually illustrates the first exemplary embodiment of the method that generates control channel feedback;
Fig. 4 conceptually illustrates the second exemplary embodiment of the method that generates control channel feedback; And
Fig. 5 conceptually illustrates an exemplary embodiment of the method for utilizing control channel feedback.
Although disclosed theme can carry out various modifications and can have alternative form, its specific embodiment illustrates by example in the accompanying drawings and is described in detail at this.Yet should be appreciated that, at this, description of specific embodiment is not intended to disclosed theme to be limited to particular forms disclosed, its objective is all modifications, equivalent and the substitute containing to fall within the scope of the appended claims.
Embodiment
Exemplary embodiment is described below, and during clear, this specification is not described all features in actual realization.Certainly can understand, in this type of any practical embodiments of exploitation, will carry out the specific decision-making of a plurality of realizations to realize developer's specific objective, the constraint of the relevant and traffic aided of the system of for example following, described constraint changes according to the difference realizing.And, will understand, this type of development may be very complicated, consuming time, but for for the benefited those skilled in the art of the disclosure, this is a routine work.
Disclosed theme will be described with reference to the drawings.Only schematically illustrated for purposes of illustration various structures, system and equipment in accompanying drawing, so that the known details of those skilled in the art can not make the present invention become hard to understand.Yet, comprise that accompanying drawing is in order to describe and explain the illustrative examples of disclosed theme.Should to be understood and interpreted to its implication consistent to the understanding of these word and expressions with various equivalent modifications for word and expression as used herein.The consistent use of term or phrase is not implied any specifically defined (that is, being different from the common definition with being accustomed to implication that those skilled in the art understands) of described term or phrase herein.If term or phrase are intended to have particular meaning (that is, being different from the implication that technical staff understands), this type of specifically defined by specification with directly and clearly provide described term or the specifically defined definition mode of order clearly list.
Generally speaking, the application has described to reduce and has broken down and the technology embodiment of the wireless communication system suspension that occurs when down control channel.Described down control channel is used predetermined modulation and conventionally than the more stable encoding scheme of associated downstream data channel and/or speed, because of subscriber equipment, blindly down control channel is decoded at least in part, if cannot correctly decode down control channel, just cannot receive corresponding downstream data channel.Therefore,, when channel conditions deteriorate, described downstream data channel may break down before corresponding control channel.But, comprise according to the heterogeneous network of the honeycomb of different radio access technologies executable operations and may generate a large amount of inter-cell interference, thus the operation of destruction down control channel, especially in overlapping cochannel is disposed.Described down control channel fault may reduce capacity and/or the throughput gain that can realize by apply honeycomb expansion technique in heterogeneous network.
Network can be by estimating the minimizing of down control channel quality or avoiding down control channel fault.Can use indirect quality indication to estimate or guess the channel quality of down control channel.For example, lack expection transmission and can indicate receiver to break down, this means that down channel quality is poor.This type of channel quality indication type depends on hypothesis testing and detection discontinuous transmission (DTX) on base station, for example, after downlink transfer, follow the up DTX that uplink scheduling is permitted or up confirmation (ACK/NACK) DTX detects.Therefore, the method is indirect method, because more than one of the reason of fault.Described down control channel quality can also permit surveying by send random uplink scheduling to subscriber equipment.In response to described detection, receiving buffer status reporting then can indirectly indicate and not be correctly decoded down control channel.
Alternatively, can the indirect indication as down control channel quality by downstream data channel feedback.But described downstream data channel feedback is only indicated the channel quality for subcarrier, frequency and the time slot of down control channel.Due to the Resource Block of downstream data channel use mutual exclusion, so network must be mapped to downstream data channel feedback the parameter of down control channel.The feedback of downstream data channel is mapped to down control channel needs extra processing, and the impact due to such as frequency dependence and/or time correlation decline, not necessarily provides the accurate indication of down control channel quality.Because the generation constraint of data channel quality information does not have the generation constraint of control channel quality information strict, therefore by data channel quality information, derive control channel quality information further complicated.For example, subscriber equipment can be reported modulation and the encoding scheme (MCS) that is expected at the downstream data channel that realizes 10% bLock error rate (BLER) on subscriber equipment.Control channel should be more stable, and be conventionally configured to realize predeterminated target quality, for example, and 1%BLER at least.
The direct indication of down control channel quality can be alternatively provided.In one embodiment, subscriber equipment can use the measurement generation control channel of the signal execution receiving for the downlink control channel by pre-polymerization grade to feed back.Described channel quality information can comprise state information, for example the channel condition information (CSI) of the average signal-to-noise ratio of down control channel (SNR) and/or down control channel.For example, described subscriber equipment can return to indication provides enough signal energies for example, to realize the information of the polymerization grade of predeterminated target quality (, at least 1%BLER) on Physical Downlink Control Channel (PDCCH).Described subscriber equipment can also be reported polymerization grade (for example, 1%BLER polymerization grade) for predeterminated target quality and " headroom " between next higher polymerization grade.Described headroom report can comprise the approximate information that departs from the decibels of certain grade of the current Signal to Interference plus Noise Ratio of indication (SINR), in described grade, need to use next polymerization grade on PDCCH, to realize predeterminated target BLER.Network can be selected suitable polymerization grade and/or determine whether to carry out honeycomb expansion with the direct indication of down control channel quality, for example, and by switching deviation or skew are sent to subscriber equipment.
Fig. 1 conceptually illustrates an exemplary embodiment of wireless communication system 100.In the embodiment shown, wireless communication system 100 is realized heterogeneous network, and described heterogeneous network is by providing wireless connections according to the air interface of different radio access technologies executable operations.For example, one or more base stations 105 can provide according to the cellular radio Communication technology the cellular technology of standards such as third generation partnership project (3GPP, 3GPP2) and/or telecommunications and the Internet converged services and high-level network protocol (TISPAN) and/or protocol definition the wireless connections with sector or honeycomb 110.Base station 105 provides the wireless connections with relatively large community 110 conventionally, so these honeycombs are commonly called macrocellular.Described wireless connections can also provide by the access node (wireless access technology such as use such as WiMAX, Wi-Fi, ieee standard, 3GPP etc. is provided to the access point 115 of the wireless connections of focus 120) of other types.Access point 115 provides and being connected of relatively little focus 120 conventionally, so these focuses are commonly called macrocellular, microcellulor, Pico cell etc.
Can configure described heterogeneous network, so that honeycomb 110 and focus 120 are at least some geographic area is overlapping.Therefore,, when mobile unit 125 is arranged in overlapping region, the mobile device such as mobile unit 125 can be used base station 105 or the described heterogeneous network of access node 115 access.In one embodiment, described heterogeneous network can be realized cochannel and dispose, so that at least a portion of the channel architecture that base station 105 and access node 115 are used is in frequency and/or overlapping on the time.For example, base station 105 and access node 115 can use comprise the subcarrier on same frequency channel architecture and by identical time slot allocation to data channel (for example, Physical Downlink Shared Channel, PDSCH) and control channel (for example, Physical Downlink Control Channel, PDCCH).Therefore, with the phase mutual interference at least in part of communicating by letter of base station 105 and access node 115 because the transmission such as control channel transmission in position, frequency and/or overlapping on the time.
Feedback adjusting or the through-put power of modification for communicating by air interface 130,135 that access node 105,115 can be used mobile unit 125 to provide.For example, if the feedback that mobile unit 125 provides is indicated current BLER to be slightly smaller than or equaled approx predetermined target value 1%, access node 105,115 can continue to use the current transformation parameter when pre-polymerization grade such as Resource Block to send downlink channel control signal.But, if the feedback that mobile unit 125 provides indicates current BLER to be greater than the through-put power deficiency that this indication of 1%(is used), or much smaller than 1%(for example, 0.1%, the through-put power that this indication is used is too large, therefore cause waste and/or cause undue interference), access node 105,115 can be revised current transformation parameter so that BLER approaches required 1% the goal gradient that is similar to.
In certain embodiments, can also carry out honeycomb expansion according to the feedback receiving from mobile unit 125.For example, mobile unit 125 (1) can be connected to base station 105 by air interface 130 (1) at first.Other certain entities in base station 105(or network 100) can determine whether mobile unit 125 (1) should be switched to access node 115 (1), even if mobile unit 125 (1) is positioned at outside honeycomb 120 (1).The exemplary reason of switching mobile unit 125 (1) includes but not limited to whole volume or the throughput of increase system 100, between access node 105,115, carries out load balance etc.Therefore, base station 105 can be used the feedback receiving from mobile unit 125 (1) to determine that mobile unit 125 (1) can successfully receive the possibility of downlink control channel information from access node 115 (1).If successfully decoded, the possibility of downlink control channel information is enough high, can carry out honeycomb expansion, for example, and by honeycomb deviation or skew are sent to mobile unit 125 (1).For example, for example, if expectation BLER is less than or is similar to predetermined target value on the PDCCH of destination node (1%), can carry out honeycomb expansion.On the signal strength measurement that can carry out to mobile unit 125 (1), apply deviation, so that mobile unit 125 (1) can be switched to access node 115 (1), even if the signal strength signal intensity of access node 115 (1) may be less than the signal strength signal intensity of base station 105.Therefore, in mobile unit 125 (1) operations, just as the size of honeycomb 120 (1), be increased to the cell size of expansion, the cell size of described expansion is defined by the signal strength signal intensity of the macrocellular honeycomb intensity of selecting and microcellulor and the rate value of deviation or skew sum.
Fig. 2 conceptually illustrates an exemplary embodiment of channel architecture 200.In the embodiment shown, channel architecture each Resource Block 205(that serves as reasons for 200 minutes only has an identifying label in Fig. 2 to indicate) subcarrier that forms.Each Resource Block 205 comprises interval or the subcarrier frequency bandwidth of time slot seclected time.The quantity of subcarrier, frequency and time slot, and the total bandwidth of channel architecture 200 is, the length of the individual bandwidth of frequency and time slot is all the content of design alternative.Channel architecture 200 represents down channel structure and is divided into control channel and data channel.Described control channel is for sending such as allowing subscriber equipment reception, the modulation of demodulation code data channel and the control information encoding scheme (MCS).Described control channel is decoded blindly by subscriber equipment, and the control channel failure of blindly decoding causes data channel to break down conventionally, because control information is unavailable.In the embodiment shown, described control channel comprises front 4 time slots of each frame, and described data channel comprises all the other time slots.Boundary between frame is shown in Figure 2 for thick line.In alternative, can realize other arrangements of control channel and data channel.
Each control channel respectively organizes Resource Block by polymerization or Resource Unit forms.In the embodiment shown, for control channel 210 distributes the Resource Block of a group four.This polymerization grade can by such as indication this be minimum polymerization grade 0 polymerization Grade numbers indicate, therefore, four Resource Block are least resource piece group or polymerizations of distributing to single control channel.This Resource Block group can be called as control channel unit.Higher polymerization grade comprises more multi-control channel unit.But the Resource Unit quantity the control channel unit that it should be appreciated by those skilled in the art that this special minimum polymerization grade of selecting being benefited from the disclosure is intended to for explanation.Alternative can be used different Resource Block groups.For example, the control channel unit in alternative can comprise nine Resource Block.For another example, described control channel unit can for example, be formed by the resource unit group of selected quantity (, 9), and wherein each resource unit group comprises the Resource Unit of selected quantity (for example, 4).
Control channel feedback can be used for the polymerization grade of change control channel.In the embodiment shown, the feedback of the transmission of the base station of transmission down control channel structure 200 from subscriber equipment reception relevant controlling channel 210.More multipotency is to realize lower BLER for described feedback indication request, and the control channel 210 that therefore described feedback indication request is used higher polymerization grade to send, so that more Resource Block are for control channel 210.Described base station then can in follow-up time section, change control channel 210 be to be used next higher polymerization grade, and this polymerization grade comprises the Resource Block 205 of twice.In one embodiment, described control channel feedback can also comprise that indication is compared with the information of the headroom between oligomerization grade and next higher polymerization grade, and this control channel feedback can be used for determining whether to use next higher polymerization grade.The control channel feedback of the control channel Information generation sending used for the second time period in higher polymerization grade in can be indicated and be used compared with oligomerization grade, for example, because the BLER measuring is significantly less than goal gradient, thereby indicates energy dissipation and/or produce interference in many minutes.Therefore, lower value can be revised as by the polymerization grade of control channel 210 in described base station in the 3rd time period.
Fig. 3 conceptually illustrates the first exemplary embodiment of the method 300 that generates control channel feedback.In the embodiment shown, subscriber equipment by one or more down control channels that send in initial polymerization grade from base station received signal (305).Then described subscriber equipment can measure (310) signal strength signal intensity, level of interference, noise grade etc., and these Information Availabilities are in the signal to noise ratio (snr) and/or the Signal to Interference plus Noise Ratio (SINR) that calculate down control channel.These measurements can be used for generating feedback information.In one embodiment, described feedback information can be indicated average SNR and/or the channel condition information (CSI) of current or target downlink control channel polymerization grade.These measurements can be combined with the error rate known or that estimate to determine that (315) realize the predeterminated target bLock error rate (BLER) transmitting on down control channel at least and be worth required energy and estimate.For example, if current BLER higher than 1%, subscriber equipment can be estimated to need how many extra energy BLER could be reduced to be similar to 1% or lower.
Can determine according to feedback information the target polymerization grade of (320) down control channel.For example, if described subscriber equipment determines that (315) need extra energy could reduce BLER, described subscriber equipment can determine that (320) are higher than the target polymerization grade when pre-polymerization grade.Alternatively, described subscriber equipment can be determined can use less energy realize target BLER, and therefore described subscriber equipment can determine that (320) can be target polymerization grade from working as pre-polymerization level down low.Described subscriber equipment determine (325) target polymerization grade whether with when pre-polymerization grade identical.If so, described subscriber equipment can generate the feedback information of (330) such as indication when the unconverted position of pre-polymerization grade.For example, described feedback information can comprise one group of position that represents polymerization grade change request.Described subscriber equipment can generate the position that (330) represent 0 change of polymerization grade.If target polymerization grade is different from when pre-polymerization grade, described subscriber equipment can generate the position that (335) represent the polymerization grade change of request, and for example+1 represents to increase a polymerization grade, and-1 represents to reduce a polymerization grade etc.Then described feedback can send it back by up link (340) base station.
Fig. 4 conceptually illustrates the second exemplary embodiment of the method 400 that generates control channel feedback.The second exemplary embodiment can be combined with the first exemplary embodiment shown in Fig. 3 or substitute described the first exemplary embodiment and use.In the embodiment shown, subscriber equipment by one or more down control channels that send in initial polymerization grade from base station received signal (405).Then described subscriber equipment can measure (410) signal strength signal intensity, level of interference, noise grade etc., and these Information Availabilities are in the signal to noise ratio (snr) and/or the Signal to Interference plus Noise Ratio (SINR) that calculate down control channel.These measurements can be combined with to determine that (415) realize the predeterminated target bLock error rate (BLER) transmitting on down control channel and be worth required energy and estimate with the error rate known or that estimate.The target polymerization grade of down control channel can be determined (420) according to realizing the required energy of 1%BLER.
Then described target polymerization grade can be used for determining that (425) are to the headroom of next higher polymerization.As used herein, the difference measurement between the identical parameters that term " headroom " indication is expected in BLER, the SNR associated with polymerization grade or the parameter SINR and next higher polymerization grade.For example, the SINR(that described headroom can pointer be measured the down control channel sending in pre-polymerization grade or the target polymerization grade SINR of estimation) be the specific decibels that departs from threshold value SINR, described threshold value SINR indication should be asked next higher polymerization grade.When target polymerization grade is with when pre-polymerization grade is identical, can calculate the headroom (425) between current grade and next higher polymerization grade according to the measurement of downlink channel control signal.Alternatively, if target polymerization grade is different from when pre-polymerization grade, described subscriber equipment can use the headroom (425) between measurement and/or modeling estimating target grade and next grade.Then the information of indication headroom can send to base station (430) by up link.In alternative, headroom feedback can individually or send (430) together with other feedback bit.
Fig. 5 conceptually illustrates an exemplary embodiment of the method 500 of utilizing control channel feedback.In the embodiment shown, on method 500 other access nodes in base station, access point or wireless communication system, realize.Described access node is used initially or works as pre-polymerization grade and sends (505) downlink channel control signal.Then described access node in response to sending downlink channel control signal, receives (510) control channel feedback.As in this introduction, described control channel feedback can comprise the information of the polymerization grade change of indication request, the target polymerization grade of current request and the headroom between next higher polymerization grade etc.Described access node is the polymerization grade for down control channel according to feedback adjusting (515) then.For example, if the indication of described feedback and/or the higher polymerization grade of request, described access node can be revised (515) polymerization grade to increase the polymerization grade for down control channel.Alternatively, described access node can reduce (515) polymerization grade or make polymerization grade remain unchanged (515) according to the feedback information that comprise.
In one embodiment, described access node can also determine whether (520) carry out honeycomb expansion.Described definite can making according to feedback information and the other standards such as power system capacity, load balance etc. at least in part.For example, if described access node receives equipment for indicating user in being switched to overlapping macrocellular/micro-cellular environment during " expansion " microcellulor, can on down control channel, realize 1%BLER(or other a certain values) feedback, described access node can select to carry out honeycomb expansion for this subscriber equipment.Therefore, can come to carry out honeycomb expansion for each subscriber equipment by send deviation or deviant (525) to subscriber equipment.As long as the microcellulor signal strength signal intensity of measuring is less than the degree of the macrocellular signal strength signal intensity of measurement and is less than deviation, described deviation just allows or equipment for indicating user is switched to microcellulor.Then described access node continues control channel signal to send (505) to the subscriber equipment of described access node service.
Technology embodiment described here compares with the technology of the indirect channel quality indication of down control channel is provided, and has multiple advantage.For example, described access node can receive the direct indication of down control channel performance, and described direct indication can reduce or eliminate and attempt using downstream data channel feedback to estimate or predict the uncertainty of down control channel Properties Correlation.Therefore, described access node can be changed down control channel polymerization grade with the down control channel capacity that avoids waste.Can also use the down control channel of precoding to minimize overlapping macrocellular and the interference of the intersection between microcellulor.
In an alternative, subscriber equipment can provide the feedback that comprises suspension indication.For example, described subscriber equipment can determine by run into the down control channel such as PDCCH suspension time feed back a single position indication.If in any polymerization grade, the SNR of the down control channel having received is lower than configurating downlink control channel detection threshold, just described subscriber equipment can be known and is about to occur suspension.Alternatively, described access node can arrange by special signaling the Q of each user command
rxlevminoffsetvalue.At present, Q
rxlevminoffsetvalue is carried out RRC broadcast and all identical for all subscriber equipmenies in honeycomb.The method can allow described access node optionally to optimize and open or close the honeycomb deviation that is applied to each subscriber equipment, to remove deviation when subscriber equipment approaches suspension.The method can also reduce PDCCH suspension, allows the not subscriber equipment in suspension precarious position to be benefited from honeycomb expansion simultaneously.
A part for disclosed theme and corresponding detailed description represent to provide by operative algorithm and the symbol of data bit in software or computer storage.Those of ordinary skill in the art is by these descriptions and represent effectively its action to be passed to other those of ordinary skill of this area.As term as used herein and according to general usage, " algorithm " is regarded as causing the orderly sequence of steps of desired structure.Described step is to carry out to physical quantity the step of physical operations.Generally speaking, although and nonessential, these physical quantitys take to store, transmit, combines, relatively and the form of the optical, electrical or magnetic signal of processing.Verified sometimes can be easily-mainly for common usage-these signals are called to position, value, element, symbol, character, term, numeral etc.
But should remember, all these are associated with suitable physical quantity with similar term and be just applied to the label that facilitates of these physical quantitys.Unless otherwise expressly stated, or become apparent by introduction, otherwise the term instruct computer system such as " processing " or " computing " or " calculating " or " determining " or " demonstration " etc. or similarly operation and the process of electronic computing device, described computer system or similarly electronic computing device will be expressed as physics in the RS of computer system, the data processing of amount of electrons and be converted to computer system memory or register or the storage of other this type of informations, in transmission or display device, be expressed as similarly other data of physical quantity.
The software that it may be noted that in addition disclosed theme is realized aspect coding or realize by the transmission medium of certain type on the program village of certain form words medium conventionally.Described program recorded medium can be magnetic (for example, floppy disk or hard disk drive) or light (for example, compact disc read-only memory or " CDROM ") medium, and can be read-only medium or random access medium.Similarly, described transmission medium can be twisted-pair feeder to, coaxial cable, optical fiber or other certain suitable transmission medium well known in the art.Disclosed theme is not subject to the restriction of these aspects of any given realization.
Above disclosed specific embodiment only for setting forth, because disclosed theme can be by instructing apparent other equivalent way of benefited those skilled in the art modify and implement from here.And, except the restriction that claim is below described, the structure illustrating or design details are not carried out to any other restriction herein.Therefore clearly, above disclosed specific embodiment can change or revise, and all these distortion are considered to drop in the scope of disclosed theme.Therefore in the protection of, herein seeking claim below, list.
Claims (10)
1. a method of respectively organizing the feedback of the control channel that Resource Block or Resource Unit form by polymerization is provided, and described method comprises:
On subscriber equipment, generate control channel feedback, at least one of at least one signal execution that the use of wherein said control channel feedback receives on described subscriber equipment for the down control channel by pre-polymerization grade measured and generated; And
By the up channel feedback that transmits control channel.
2. the method for claim 1, wherein generates control channel feedback and comprises according at least one measurement generation channel quality indication of the signal strength signal intensity of described at least one signal receiving on described subscriber equipment and determine the target polymerization grade that realizes the down control channel of predetermined quality target by down control channel.
3. the method for claim 1, wherein generates control channel feedback and comprises the SINR of generation indication on pre-polymerization grade uplink/downlink control channel and the headroom indication of the difference between the SINR in the higher leveled polymerization grade of Bi Dang pre-polymerization grade.
4. the method for claim 1, comprise and receive indication for determining whether that according to the honeycomb of the first wireless access technology executable operations or sector with the information of the switching deviation of switching between according to the honeycomb of the second wireless access technology executable operations or sector, wherein said switching deviation is determined according to described control channel feedback.
5. relate to a method of respectively organizing the feedback of the control channel that Resource Block or Resource Unit form by polymerization, described method comprises:
On access node, receive the control channel feedback from subscriber equipment, at least one of at least one signal that the use of wherein said control channel feedback sends from described access node for the down control channel by pre-polymerization grade measured generation; And
Based on described control channel feedback, determine whether to revise when pre-polymerization grade.
6. method as claimed in claim 5, wherein receives control channel feedback and comprises the information that receives the target polymerization grade of indicating the down control channel that the signal energy that realizes predeterminated target quality on described subscriber equipment is provided.
7. method as claimed in claim 5, wherein said reception control channel feedback comprises and receives the SINR of indication on the above subscriber equipment of pre-polymerization grade and the headroom indication of the difference between the SINR in the higher leveled polymerization grade of Bi Dang pre-polymerization grade.
8. method as claimed in claim 5, comprises based on control channel feedback and revises on pre-polymerization grade and the down control channel in the polymerization grade of modification and send control information.
9. method as claimed in claim 5, comprise and determine that wherein said switching deviation is determined based on described control channel feedback according to the first honeycomb of the first wireless access technology executable operations or sector with according to the switching deviation between the second honeycomb of the second wireless access technology executable operations or sector.
10. relate to a method of respectively organizing the feedback of the control channel that Resource Block or Resource Unit form by polymerization, described method comprises:
On access node, receive the control channel feedback from subscriber equipment, at least one of at least one signal that the use of wherein said control channel feedback sends from described access node for the down control channel by pre-polymerization grade measured generation; And
Based on described control channel feedback, determine whether to carry out honeycomb expansion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/042,757 | 2011-03-08 | ||
| US13/042,757 US8854994B2 (en) | 2010-04-10 | 2011-03-08 | Method for mitigating outages in heterogeneous networks |
| PCT/US2011/031314 WO2011127103A1 (en) | 2010-04-10 | 2011-04-06 | Method for mitigating outages in heterogeneous networks |
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| CN103609056A true CN103609056A (en) | 2014-02-26 |
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| CN201180018352.4A Pending CN103609056A (en) | 2011-03-08 | 2011-04-06 | Method for mitigating outages in heterogeneous networks |
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Cited By (2)
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| CN106465393A (en) * | 2014-06-30 | 2017-02-22 | 英特尔Ip公司 | Multi-user aggregation over frequency |
| CN108702199A (en) * | 2016-01-14 | 2018-10-23 | 三星电子株式会社 | Support the device and method of the unified wireless backhaul and access network in wireless communication system |
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| CN1980116A (en) * | 2005-11-15 | 2007-06-13 | 阿尔卡特公司 | Method for sending channel quality information, corresponding user terminal and base station |
| WO2008133415A1 (en) * | 2007-04-27 | 2008-11-06 | Lg Electronics Inc. | A method for transmitting downlink control channel in a mobile communication system and a method for mapping the control channel to physical resource using block interleaver in a mobile communication system |
| CN101557249A (en) * | 2008-04-07 | 2009-10-14 | 上海贝尔阿尔卡特股份有限公司 | Method and device for controlling cooperative transmission of downlink signal in wireless communication system |
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| CN1980116A (en) * | 2005-11-15 | 2007-06-13 | 阿尔卡特公司 | Method for sending channel quality information, corresponding user terminal and base station |
| WO2008133415A1 (en) * | 2007-04-27 | 2008-11-06 | Lg Electronics Inc. | A method for transmitting downlink control channel in a mobile communication system and a method for mapping the control channel to physical resource using block interleaver in a mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106465393A (en) * | 2014-06-30 | 2017-02-22 | 英特尔Ip公司 | Multi-user aggregation over frequency |
| CN106465393B (en) * | 2014-06-30 | 2019-12-31 | 英特尔Ip公司 | Apparatus and method for selectively implementing frequency aggregation |
| CN108702199A (en) * | 2016-01-14 | 2018-10-23 | 三星电子株式会社 | Support the device and method of the unified wireless backhaul and access network in wireless communication system |
| CN108702199B (en) * | 2016-01-14 | 2021-07-20 | 三星电子株式会社 | Apparatus and method for supporting unified wireless backhaul and access network in wireless communication system |
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Application publication date: 20140226 |