CN102378334B - The method and system of acquiring size of closed loop power control region - Google Patents

The method and system of acquiring size of closed loop power control region Download PDF

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Publication number
CN102378334B
CN102378334B CN201010257119.9A CN201010257119A CN102378334B CN 102378334 B CN102378334 B CN 102378334B CN 201010257119 A CN201010257119 A CN 201010257119A CN 102378334 B CN102378334 B CN 102378334B
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frame
power control
loop power
control information
station
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CN102378334A (en
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陈宪明
宁丁
关艳峰
鲁照华
方惠英
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of method and system of acquiring size of closed loop power control region.The method, comprising: control station and subordinate stand acquisition system configuration parameter; Described control station and described subordinate station obtain size of closed loop power control region according to described system configuration parameter and pre-defined rule.In the present invention, what no longer need control station to utilize system control signaling clear and definite notifies that subordinate stands, but control station and subordinate station calculate size of closed loop power control region according to system configuration parameter and pre-defined rule respectively, save relevant system control overhead.

Description

The method and system of acquiring size of closed loop power control region
Technical field
The present invention relates to communications industry wireless technical field, in particular to a kind of method and system of acquiring size of closed loop power control region.
Background technology
Wireless access wide band technology, as one of access technology the most potential in next generation communication network, is just being subject to industry and is more and more paying close attention to.Mobile WiMAX (WorldwideInteroperability for Microwave Access, Worldwide Interoperability for Microwave access interoperability) be the representative of current Wireless Broadband MAN, the target of its current commercial technical standard IEEE802.16e is can the backward compatible IEEE 802.16d standard only supporting fixing access.As the expansion of fixing access technology, which increase the support to terminal mobility, thus enable mobile terminal carry out switching and roaming between different base station.But in order to improve the wireless access performance of mobile WiMAX further, meet the requirement of people to the growing demand of transmission rate and high-speed mobility, agenda that the continuation evolution of mobile WiMAX is referred already, corresponding technical standard IEEE 802.16m draft is also issued.
In a wireless communication system, the reliability that cannot ensure uplink is controlled iff dependence speed, or in order to effectively control the interference rank to adjacent control station, under normal circumstances, the power control mechanism of closed loop will be introduced by this system, with the echo signal interference-to-noise ratio of Deterministic service control station or disturbed control station Received signal strength (Signal InterferenceNoise Ratio is called for short SINR).For OFDM (Orthogonal FrequencyDivision Multiplexing, be called for short OFDM) system, in order to realize the close-loop power control of uplink, part can be used for the running time-frequency resource region of descending control as closed loop power control region, to carry close-loop power control signaling by usual system.Such as, PC A-MAP (Power Control Advanced-MAP, power the controls advanced MAP) region of current IEEE802.16m physical layer definition is used as closed loop power control region by system; MAP wherein can be understood as carrying some specific running time-frequency resource region from high layer information, and here, high layer information is specially close-loop power control information.
The frame structure schematic diagram that Fig. 1 is current I EEE 802.16m standard ascending-descending subframes ratio when being 5/3.As shown in Figure 1, each descending sub frame comprises an A-MAP region for bearing downlink control signal, each sub-frame of uplink comprises one for carrying uplink feedback (UL-FEEDBACK) region of uplink feedback signalling, wherein, the unit of A-MAP region and uplink feedback area size is logical resource unit (Logic Resource Unit, be called for short LRU), A-MAP region and uplink feedback area size do not have inevitable contacting.
Fig. 2 is the A-MAP structural representation in each descending sub frame of current I EEE 802.16m standard.As shown in Figure 2, A-MAP region is by hybrid automatic repeat-request (HybridAutomatic Repeat reQuest, be called for short HARQ) A-MAP region, PC A-MAP region and Resourse Distribute A-MAP region are formed, and above-mentioned each region is by multiple information unit (Information Element, be called for short IE) form, control station and subordinate station only predetermine or obtain HARQ and PC A-MAP area size and could send or receive follow-up Resourse Distribute control information unit normally.
In prior art, control station is after the size determining PC A-MAP region, utilizes " PC A-MAP size indicator " in system parameters to come clear and definite to notify that each subordinate stands PC A-MAP area size, as shown in table 1.But this mode exists following defect: first, which increase control signal expense; Secondly, because this indication information territory only has two bits, instruction granularity is inadequate, namely enough instruction scenes can not be related to fully, therefore, under specific circumstances, in order to ensure that PCA-MAP information unit number meets the demands, the waste of PC A-MAP resource will inevitably be caused.
Table 1-PC A-MAP size indicator
Summary of the invention
Main purpose of the present invention is the method and system providing a kind of acquiring size of closed loop power control region, transmit at least to solve specific signaling in above-mentioned size of closed loop power control region dependence system, add the problem of Systematical control resource overhead.
According to an aspect of the present invention, provide a kind of method of acquiring size of closed loop power control region, comprising: control station and subordinate stand acquisition system configuration parameter; Control station and subordinate station obtain size of closed loop power control region according to system configuration parameter and pre-defined rule.
Preferably, in the technical program, control station and subordinate station comprise according to system configuration parameter and pre-defined rule determination size of closed loop power control region: control station and subordinate station obtain the close-loop power control information unit number of necessity that each descending sub frame comprises according to system configuration parameter and pre-defined rule; The close-loop power control information unit number of necessity that control station and subordinate station comprise according to each descending sub frame obtains the actual close-loop power control information unit number comprised of each descending sub frame; Control station and subordinate station obtain size of closed loop power control region according to the actual close-loop power control information unit number comprised of each descending sub frame.
Preferably, in the technical program, the close-loop power control information unit number of necessity that each descending sub frame comprises refers to the maximum close-loop power control information unit number can distributing to subordinate station that each descending sub frame comprises, and is not more than the actual close-loop power control information unit number comprised of each descending sub frame.
According to a further aspect in the invention, provide a kind of system of acquiring size of closed loop power control region, comprise control station and subordinate station, wherein: control station and subordinate station, include: acquisition module, for obtaining system configuration parameter; Acquiring size of closed loop power control region module, for obtaining size of closed loop power control region according to system configuration parameter and pre-defined rule.
Pass through the present invention, control station and subordinate is adopted to stand according to system configuration parameter, and based on the size of closed loop power control region that each descending sub frame of the predefined consistent Rule of both sides comprises, solve the defect needing control station control channel, and then reach the effect of saving Systematical control resource overhead.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The frame structure schematic diagram that Fig. 1 is prior art IEEE 802.16m standard ascending-descending subframes ratio when being 5/3;
Fig. 2 is the A-MAP structural representation in each descending sub frame of prior art IEEE 802.16m standard;
Fig. 3 is the uplink feedback regional structure schematic diagram in each sub-frame of uplink of prior art IEEE 802.16m standard;
Fig. 4 is the flow chart according to the inventive method embodiment one acquiring size of closed loop power control region method;
Fig. 5 is the flow chart according to the inventive method embodiment two acquiring size of closed loop power control region method;
Fig. 6 is the flow chart according to the inventive method embodiment three acquiring size of closed loop power control region method;
Fig. 7 to stand the schematic diagram of FFBCH and PC A-MAP IE position of A according to corresponding to subordinate in the inventive method embodiment five;
Fig. 8 to stand the schematic diagram of FFBCH and PC A-MAP IE position of A according to corresponding to subordinate in the inventive method embodiment six;
Fig. 9 is the schematic diagram of system according to the invention embodiment one acquiring size of closed loop power control region system.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
The present invention is at the up fast feedback channel of reservation (Fast Feedback Channel, be called for short FFBCH) while original feedback function, using the uplink reference signals of FFBCH as close-loop power control, and close-loop power control information unit (PCA-MAP IE) FFBCH corresponding with it corresponding to appointment subordinate station is matched.
Fig. 3 is the uplink feedback regional structure schematic diagram in each sub-frame of uplink of current I EEE 802.16m standard.As shown in Figure 3, uplink feedback region is made up of HARQ FBCH and FFBCH, wherein, HARQ FBCH can comprise multiple HARQ feedback region, uplink feedback region (UL_FEEDBACK_SIZE) size and HARQ feedback area size are obtained by system parameters, each sub-frame of uplink has identical uplink feedback area size, but at TDD (Time Division Duplex, time division duplex) under pattern, the HARQ FBCH that each uplink feedback region comprises and FFBCH number may be different.
Embodiment of the method one:
Fig. 4 is the flow chart according to the inventive method embodiment one acquiring size of closed loop power control region method.As shown in Figure 4, the present embodiment comprises the following steps:
Step S402, control station and subordinate station obtain system configuration parameter respectively;
Step S404, control station and subordinate station obtain size of closed loop power control region according to system configuration parameter and pre-defined rule respectively.
In the present embodiment, control station and subordinate stand obtain system configuration parameter comprise: frame configuration index, the HARQ feedback channel number that HARQ feedback region comprises, each sub-frame of uplink feedback areas size.Control station comprises one or more network elements following: grand control station, microcontroller station, slight control station, relay station; Subordinate station comprises one or more network elements following: terminal, relay station, microcontroller station, slight control station.
Can also comprise after the present embodiment: control station sends Resourse Distribute control information after closed loop power control region; Resourse Distribute control information is received after standing in closed loop power control region with subordinate.
In the present embodiment, what no longer need control station to utilize system control signaling clear and definite notifies that subordinate stands, but control station and subordinate station calculate size of closed loop power control region according to system configuration parameter and pre-defined rule respectively, save relevant system control overhead.Further, both sides' corresponding informance content does not have the restriction of control signal size, fully can relate to enough size of closed loop power control region scenes.
Embodiment of the method two:
Fig. 5 is the flow chart according to the inventive method embodiment two acquiring size of closed loop power control region method.As shown in Figure 5, the present embodiment comprises the following steps:
Step S502, control station and subordinate stand acquisition system configuration parameter;
Wherein, control station and subordinate stand and obtain system configuration parameter and comprise: control station directly reads default system configuration parameter, and the system information that subordinate is broadcasted by Receiving & control ground station at station obtains system configuration parameter.
Step S504, control station and subordinate station obtain the close-loop power control information unit number of necessity that each descending sub frame comprises according to system configuration parameter and pre-defined rule;
Wherein, the close-loop power control information unit number of necessity that each descending sub frame comprises refers to the maximum close-loop power control information unit number can distributing to subordinate station that each descending sub frame comprises, and is not more than the actual close-loop power control information unit number comprised of each descending sub frame;
Step S506, the close-loop power control information unit number of necessity that control station and subordinate station comprise according to each descending sub frame obtains the actual close-loop power control information unit number comprised of each descending sub frame;
Step S508, control station and subordinate station obtain size of closed loop power control region according to the actual close-loop power control information unit number comprised of each descending sub frame;
Step S510, control station sends Resourse Distribute control information after closed loop power control region; Resourse Distribute control information is received after standing in closed loop power control region with subordinate.
The present embodiment is the specific implementation of embodiment of the method one, has whole beneficial effects of embodiment of the method one, no longer repeats herein.
Embodiment of the method three:
Fig. 6 is the flow chart according to the inventive method embodiment three acquiring size of closed loop power control region method.As shown in Figure 6, the present embodiment comprises the following steps:
Step S602, control station obtains system configuration parameter;
Step S604, control station obtains the close-loop power control information unit number of necessity that each descending sub frame comprises according to system configuration parameter and pre-defined rule;
Step S606, the fast feedback channel location information at the close-loop power control information unit number of necessity that control station comprises according to each descending sub frame and subordinate station, obtains the close-loop power control information unit position at corresponding subordinate station;
Step S608, control station uses the closed-loop power control information at close-loop power control information unit carrying subordinate station;
Step S610, subordinate stands acquisition system configuration parameter;
Step S612, subordinate station obtains the close-loop power control information unit number of necessity that each descending sub frame comprises according to system configuration parameter and pre-defined rule;
Step S614, the close-loop power control information unit number of necessity that subordinate station comprises according to each descending sub frame and the fast feedback channel location information at subordinate station, obtain the close-loop power control information unit position at corresponding subordinate station;
Step S616, subordinate station obtains closed-loop power control information from close-loop power control information unit.
In the present embodiment, control station and subordinate station can also obtain by system configuration parameter and predetermined computation rule the positional information corresponding to the close-loop power control information unit of specifying subordinate station further.By said method, save system control overhead further.
Embodiment of the method four:
The present embodiment aims to provide the acquisition methods of size of closed loop power control region, can the various configurations of compatible Wimax evolution system (IEEE 802.16m system).In addition, the closed loop power control region in the present embodiment is specially PC A-MAP region.Described in the present embodiment, the method for acquiring size of closed loop power control region comprises:
Control station and subordinate stand getting frame configuration index Idx parameter, with certainty annuity duplex mode, and descending sub frame number D, the HARQ feedback number of regions N comprised in the feedback areas of sub-frame of uplink number U and each sub-frame of uplink h-Rgn, m, wherein, m represents sub-frame of uplink index; In addition, control station and subordinate stand and continue to obtain the HARQ feedback channel number L that comprises of HARQ feedback region hFBparameter, and each sub-frame of uplink feedback areas size (UL_FEEDBACK_SIZE) parameter.
Control station and subordinate stand based on formula:
Q m=N fb* UL_FEEDBACK_SIZE-N h-Rgn, m* L hFB/ N reuse, 0≤m≤U-1, obtains the FFBCH number Q that each sub-frame of uplink comprises respectively m, wherein, the feedback resources number N that each LRU comprises fband the HARQ FBCH number N that a feedback resources can carry reusecan be consistent with Current standards.
Then, control station and subordinate stand the FFBCH number Q comprised according to known each sub-frame of uplink m, based on formula
n pC=2*ceil (T/2), 0≤m≤U-1, determine the PC A-MAP IE number T of necessity that each descending sub frame comprises respectively successively, and the actual PC A-MAP IE number N comprised of each descending sub frame pC.
Finally, if the sub-carrier number that imagination often couple of PC A-MAP IE occupies is N sC, then the PC A-MAP area size of each descending sub frame is N sC* (N pC/ 2), namely the PC A-MAP region of each descending sub frame occupies N sC* (N pC/ 2) individual sub-carrier resources.
In addition, if the FFBCH positional information that imagination corresponds to subordinate station is specially: frame index i, the sub-frame of uplink index m in frame, and the FFBCH index q in subframe m, can determine that the index of this FFBCH within the scope of a frame is specially by above-mentioned information,
s = Σ j = 0 m - 1 Q j + q m ,
Like this, the positional information corresponding to the PC A-MAP IE at subordinate station is:
Frame index is i+1,
Descending sub frame index in frame is floor (s/T),
PC A-MAP IE index in subframe is s mod T.
Control station uses the PC A-MAP IE that determines to carry subordinate and to stand closed-loop power control information, and sends with the form of clean culture; Subordinate stands and receives and resolve the above-mentioned PC A-MAPIE determining position, to obtain closed-loop power control information.
In the present embodiment, described control station comprises one or more network elements following: grand control station, microcontroller station, slight control station, relay station; Described subordinate station comprises one or more network elements following: terminal, relay station, microcontroller station, slight control station.
The present embodiment is embodiment of the method one and the specific implementation process of embodiment of the method two, has embodiment one and whole beneficial effects of embodiment two, no longer repeats herein.
Embodiment of the method five:
Table 2 is frame configuration index example.The frame configuration index example related in the present embodiment can be as shown in table 2, but be not limited thereto.
Table 2 frame configuration index example
The frame configuration index Idx of imagination IEEE 802.16m system is set to 1, and as shown in table 2, now, system works is at tdd mode, and descending sub frame number D is 5, and sub-frame of uplink number U is the HARQ feedback number of regions N comprised in the feedback areas of 3, three sub-frame of uplink h-Rgn, 0, N h-Rgn, 1with N h-Rgn, 2be respectively 2,1 and 2; In addition, the HARQ feedback channel number L that each HARQ feedback region comprises is imagined hFBbe 12, the feedback areas size (UL_FEEDBACK_SIZE) of each sub-frame of uplink is 4 LRU.
Control station and subordinate stand based on formula:
Q m=N fb* UL_FEEDBACK_SIZE-N h-Rgn, m* L hFB/ N reuse, 0≤m≤U-1=2, obtains the FFBCH number Q that three sub-frame of uplink comprise respectively 0, Q 1with Q 2, wherein, the feedback resources number N that each LRU comprises fband the HARQ FBCH number N that a feedback resources can carry reusebe consistent with Current standards (equaling 3 and 6 respectively).Concrete,
Q 0＝3*4-2*12/6＝8；
Q 1＝3*4-1*12/6＝10；
Q 2＝3*4-2*12/6＝8；
Then, control station and subordinate stand the FFBCH number Q comprised respectively according to known three sub-frame of uplink 0, Q 1with Q 2based on formula
n pC=2*ceil (T/2), 0≤m≤U-1=2, determine the PC A-MAP IE number T of necessity that each descending sub frame comprises respectively successively, and the actual PC A-MAP IE number N comprised of each descending sub frame pC, particularly,
T＝ceil((Q 0+Q 1+Q 2)/D)＝ceil((8+10+8)/5)＝6，
N PC＝2*ceil(6/2)＝6；
Now, necessary in each descending sub frame or actual available PC A-MAP IE number T equals in esse PC A-MAP IE number N pC.In fact, N pCequal the minimum even number being more than or equal to T, because consider that the multi-antenna transmission pattern of PC A-MAP is SFBC (Space Frequency Block Code, space frequency block coding), must simultaneously using 2 different PC A-MAP symbols as the input of SFBC, and 2 different PC A-MAP symbols correspond to 2 different PC A-MAP IE, so must ensure that each PCA-MAP IE exists another PC A-MAP IE with its pairing, namely the PC A-MAP IE number of each descending sub frame is always even number.
Finally, if the sub-carrier number that imagination often couple of PC A-MAP IE occupies is N sC=4, then the PC A-MAP area size of each descending sub frame is
N sC* (N pC/ 2)=4* (6/2)=12, namely the PC A-MAP region of each descending sub frame occupies 12 sub-carrier resources.
In addition, if imagination corresponds to subordinate, the stand FFBCH positional information of A is specially: frame index i=3, the sub-frame of uplink index m=2 in frame, and the FFBCH index q in subframe m=4, can determine that the index of this FFBCH within the scope of a frame is specially by above-mentioned information,
s = Σ j = 0 m - 1 Q j + q m = 8 + 10 + 4 = 22 ,
Like this, corresponding to the stand positional information of PC A-MAP IE of A of subordinate be:
Frame index is i+1=3+1=4,
Descending sub frame index in frame is floor (s/T)=floor (22/6)=3,
To be s mod T=22mod 6=4, Fig. 7 be PC A-MAP IE index in subframe to stand the schematic diagram of FFBCH and PCA-MAP IE position of A according to corresponding to subordinate in the inventive method embodiment five, as shown in Figure 7.
Control station uses the PC A-MAP IE (position: frame index is 4, descending sub frame index is 3, and the PC A-MAP IE index in subframe is 4) that determines to carry subordinate and to stand A closed-loop power control information, and sends with the form of clean culture; The subordinate A that stands receives and resolves the above-mentioned PC A-MAP IE determining position, to obtain closed-loop power control information.
The present embodiment is the specific implementation of embodiment of the method three, and has whole beneficial effects of above-described embodiment, no longer repeats herein.
Embodiment of the method six:
The present embodiment still can use the frame configuration index represented in table three.The frame configuration index Idx of imagination IEEE802.16m system is set to 3, and as shown in table 3, now, system works is at tdd mode, and descending sub frame number D is 3, and sub-frame of uplink number U is the HARQ feedback number of regions N comprised in the feedback areas of 5, five sub-frame of uplink h-Rgn, 0, N h-Rgn, 1, N h-Rgn, 2, N h-Rgn, 3with N h-Rgn, 4be respectively 0,1,1,1 and 0.In addition, the HARQ feedback channel number L that each HARQ feedback region comprises is imagined hFBbe 12, each sub-frame of uplink feedback areas size (UL_FEEDBACK_SIZE) is 4 LRU.
Control station and subordinate stand based on formula:
Q m=N fb* UL_FEEDBACK_SIZE-N h-Rgn, m* L hFB/ N reuse, 0≤m≤U-1=4, obtains the FFBCH number Q that five sub-frame of uplink comprise respectively 0, Q 1, Q 2, Q 3with Q 4, wherein, the feedback resources number N that each LRU comprises fband the HARQ FBCH number N that a feedback resources can carry reusebe consistent with Current standards (equaling 3 and 6 respectively).Concrete,
Q 0＝3*4-0*12/6＝12；
Q 1＝3*4-1*12/6＝10；
Q 2＝3*4-1*12/6＝10；
Q 3＝3*4-1*12/6＝10；
Q 4＝3*4-0*12/6＝12；
Then, control station and subordinate stand the FFBCH number Q comprised respectively according to known five sub-frame of uplink 0, Q 1, Q 2, Q 3with Q 4based on formula
n pC=2*ceil (T/2), 0≤m≤U-1=4, determine the PC A-MAP IE number T of necessity that each descending sub frame comprises respectively successively, and the actual PC A-MAP IE number N comprised of each descending sub frame pC, particularly,
T＝ceil((Q 0+Q 1+Q 2+Q 3+Q 4)/D)＝ceil((12+10+10+10+12)/3)＝18，
N PC＝2*ceil(18/2)＝18；
Now, necessary in each descending sub frame or actual available PCA-MAP IE number T equals in esse PC A-MAP IE number NPC.In fact, NPC equals the minimum even number being more than or equal to T, because consider that the multi-antenna transmission pattern of PC A-MAP is SFBC (Space Frequency Block Code, space frequency block coding), must simultaneously using 2 different PC A-MAP symbols as the input of SFBC, and 2 different PC A-MAP symbols correspond to 2 different PC A-MAP IE, so must ensure that each PCA-MAP IE exists another PC A-MAP IE with its pairing, namely the PC A-MAP IE number of each descending sub frame is always even number.
Finally, if the sub-carrier number that imagination often couple of PC A-MAP IE occupies is N sC=4, then the PC A-MAP area size of each descending sub frame is
N sC* (N pC/ 2)=4* (18/2)=36, namely the PC A-MAP region of each descending sub frame occupies 36 sub-carrier resources.
In addition, if imagination corresponds to subordinate, the stand FFBCH positional information of A is specially: the sub-frame of uplink index m=3 in frame index i=3 frame, and the FFBCH index q in subframe m=5, can determine that the index of this FFBCH within the scope of a frame is specially by above-mentioned information,
s = Σ j = 0 m - 1 Q j + q m = 12 + 10 + 10 + 5 = 37 ,
Like this, corresponding to the stand positional information of PC A-MAP IE of A of subordinate be:
Frame index is i+1=3+1=4,
Descending sub frame index in frame is floor (s/T)=floor (37/18)=2,
PC A-MAP IE index in subframe is s mod T=37mod 18=1.Fig. 8 to stand the schematic diagram of FFBCH and PCA-MAP IE position of A according to corresponding to subordinate in the inventive method embodiment six, as shown in Figure 8.
Control station uses the PC A-MAP IE (position: frame index is 4, descending sub frame index is 2, and the PC A-MAP IE index in subframe is 1) that determines to carry subordinate and to stand A closed-loop power control information, and sends with the form of clean culture; The subordinate A that stands receives and resolves the above-mentioned PC A-MAP IE determining position, to obtain closed-loop power control information.
It should be noted that, control station can stand and periodically distribute FFBCH to some subordinaties based on a specific cycle, different subordinate station can have different assignment periods, subordinate carries out uplink feedback according to the above-mentioned cycle in station, because FFBCH and PC A-MAP is one to one, therefore control station also can carry out periodic power control based on the described cycle to subordinate station, and namely the rapid feedback cycle at subordinate station equals power control period.
Preferably, each PC-A-MAP IE comprises 2 bits, and corresponding power adjustment is as shown in table 3, and such as, if power adjustment is 0b00, it will be interpreted as sub-carrier power or power density reduces 0.5dB (decibel, decibel).
Table 3-PC A-MAP IE form
The present embodiment is the specific implementation of embodiment of the method three, and has whole beneficial effects of above-described embodiment, no longer repeats herein.
System embodiment one:
Fig. 9 is the schematic diagram of system according to the invention embodiment one acquiring size of closed loop power control region system.As shown in Figure 9, in the present embodiment, control station 902 and subordinate stand 904, include: acquisition module, for obtaining system configuration parameter; Acquiring size of closed loop power control region module, for obtaining size of closed loop power control region according to system configuration parameter and pre-defined rule.
In the present embodiment, acquiring size of closed loop power control region module can comprise: necessary close-loop power control information unit number obtains submodule, for obtaining the close-loop power control information unit number of necessity that each descending sub frame comprises according to system configuration parameter and pre-defined rule; The actual close-loop power control information unit number comprised obtains submodule, and the close-loop power control information unit number for the necessity comprised according to each descending sub frame obtains the actual close-loop power control information unit number comprised of each descending sub frame; Acquiring size of closed loop power control region submodule, for obtaining size of closed loop power control region according to the actual close-loop power control information unit number comprised of each descending sub frame.
In the present embodiment, control station can also comprise: Resourse Distribute control information sending module, for sending Resourse Distribute control information after closed loop power control region; Subordinate station also comprises: Resourse Distribute control information receiver module, for receiving Resourse Distribute control information after closed loop power control region.
The method that the present embodiment realizes can the related description of reference method embodiment one, two, and has whole beneficial effects of above-described embodiment, no longer repeats herein.
System embodiment two:
The present embodiment, by the basis of system embodiment one, is described further acquiring size of closed loop power control region system.
Control station and subordinate station include: close-loop power control information unit position acquisition module, for the close-loop power control information unit position at the corresponding subordinate station of fast feedback channel location acquisition of information at the close-loop power control information unit number of necessity that comprises according to each descending sub frame and subordinate station; Control station, also comprises: control station power adjustment message issues module, for the power adjustment message using close-loop power control information unit to carry subordinate station; Subordinate stands, and also comprises: subordinate stands power adjustment message acquisition module, for obtaining power adjustment message from close-loop power control information unit.
The method that the present embodiment realizes, can the related description of reference method embodiment one, three, and has whole beneficial effects of above-described embodiment, no longer repeats herein.
System embodiment three:
In the present embodiment, system configuration parameter comprises: frame configuration index, the HARQ feedback channel number that hybrid automatic repeat-request HARQ feedback region comprises, each sub-frame of uplink feedback areas size.The close-loop power control information unit number acquisition module of described necessity comprises: HARQ feedback number of regions obtains submodule, fast feedback channel number obtains submodule, necessary close-loop power control information unit number obtains submodule.
HARQ feedback number of regions obtains submodule, for being obtained the HARQ feedback number of regions that each sub-frame of uplink comprises by frame configuration index, preferably, the mapping relations between the HARQ feedback number of regions comprised based on frame configuration index and each sub-frame of uplink of systemic presupposition obtain the HARQ feedback number of regions that each sub-frame of uplink comprises.
Fast feedback channel number obtains submodule, for the HARQ feedback number of regions comprised by described each sub-frame of uplink, the HARQ feedback channel number that each HARQ feedback region comprises, and the fast feedback channel number that each sub-frame of uplink of feedback areas acquiring size of each sub-frame of uplink comprises, specifically, the fast feedback channel number that each sub-frame of uplink comprises is obtained by following formula
Q m＝N fb*UL_FEEDBACK_SIZE-N H-Rgn，m*L HFB/N Reuse；
Wherein, Q mrepresent the FFBCH number that m sub-frame of uplink comprises; N fbrepresent the feedback resources number that each logical resource unit comprises; UL_FEEDBACK_SIZE represents each sub-frame of uplink feedback areas size; N h-Rgn, mrepresent the HARQ feedback number of regions that m sub-frame of uplink comprises; L hFBrepresent the HARQ feedback channel number that HARQ feedback region comprises; N reuserepresent the HARQ feedback channel number that a feedback resources can carry.
Necessary PC A-MAP IE number obtains submodule, and the fast feedback channel number for being comprised by described each sub-frame of uplink obtains the close-loop power control information unit number that each descending sub frame comprises.Specifically, obtain by following formula the close-loop power control information unit number that each descending sub frame comprises,
T = ceil ( Σ m = 0 U - 1 Q m / D ) ,
Wherein, T represents the close-loop power control information unit number of necessity that each descending sub frame comprises, and U represents that the descending sub frame number that each frame comprises, D represent the descending sub frame number that each frame comprises.
The described actual close-loop power control information unit number acquisition module comprised, for adopting following formula to obtain the actual close-loop power control information unit number comprised,
N PC＝2*ceil(T/2)，
Wherein, N pCrepresent the actual close-loop power control information unit number comprised of each descending sub frame; T represents the close-loop power control information unit number of the necessity comprised in each descending sub frame.
Described control station and described subordinate station, include: close-loop power control information unit position acquisition module, for obtaining the positional information of close-loop power control information unit according to following method:
Described fast feedback channel location information comprises frame index i, index q in sub-frame of uplink index m and subframe m, then corresponding close-loop power control information unit positional information is frame index i+1, descending sub frame index floor (s/T), the close-loop power control information unit index s mod T in subframe, wherein, represent the fast feedback channel index within the scope of a frame.
In the present embodiment, described control station comprises one or more network elements following: grand control station, microcontroller station, slight control station, relay station; Described subordinate station comprises one or more network elements following: terminal, relay station, microcontroller station, slight control station.
The method that the present embodiment realizes can the related description of reference method embodiment three to five, and has whole beneficial effects of above-described embodiment, no longer repeats herein.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (22)

1. a method for acquiring size of closed loop power control region, is characterized in that, comprising:
Control station and subordinate stand acquisition system configuration parameter, and wherein, described system configuration parameter comprises: frame configuration index, the HARQ feedback channel number that hybrid automatic repeat-request HARQ feedback region comprises and each sub-frame of uplink feedback areas size;
Described control station and described subordinate station obtain size of closed loop power control region according to described system configuration parameter and pre-defined rule, wherein, described control station and subordinate station comprise according to system configuration parameter and pre-defined rule acquisition size of closed loop power control region: described control station and described subordinate station obtain the close-loop power control information unit number of necessity that each descending sub frame comprises according to described system configuration parameter and pre-defined rule; The close-loop power control information unit number of necessity that described control station and described subordinate station comprise according to described each descending sub frame obtains the actual close-loop power control information unit number comprised of each descending sub frame; Described control station and described subordinate station obtain size of closed loop power control region according to the actual close-loop power control information unit number comprised of described each descending sub frame.
2. method according to claim 1, it is characterized in that, the close-loop power control information unit number of necessity that described each descending sub frame comprises refers to the maximum close-loop power control information unit number can distributing to subordinate station that each descending sub frame comprises, and is not more than the actual close-loop power control information unit number comprised of each descending sub frame.
3. method according to claim 1, is characterized in that, described control station and subordinate stand obtain system configuration parameter comprise:
Described control station directly reads default system configuration parameter,
The system information that described subordinate station is broadcasted by Receiving & control ground station obtains system configuration parameter.
4. method according to claim 1, is characterized in that, after described acquisition size of closed loop power control region, also comprises:
Described control station sends Resourse Distribute control information after described closed loop power control region; Resourse Distribute control information is received after standing in described closed loop power control region with described subordinate.
5. method according to claim 1, is characterized in that, after the close-loop power control information unit number of necessity that each descending sub frame of described acquisition comprises, also comprises:
The close-loop power control information unit position at the close-loop power control information unit number of necessity that described control station and described subordinate station comprise according to described each descending sub frame and the corresponding described subordinate station of fast feedback channel location acquisition of information at described subordinate station;
Described control station uses described close-loop power control information unit to carry the close-loop power control information at described subordinate station; Described subordinate station obtains described close-loop power control information from described close-loop power control information unit.
6. method according to claim 1, is characterized in that, the close-loop power control information unit number that described control station and subordinate station obtain according to system configuration parameter and pre-defined rule necessity that each descending sub frame comprises comprises:
The HARQ feedback number of regions that each sub-frame of uplink comprises is obtained by frame configuration index;
The HARQ feedback number of regions comprised by described each sub-frame of uplink, the HARQ feedback channel number that HARQ feedback region comprises, and the fast feedback channel number that each sub-frame of uplink of each sub-frame of uplink feedback areas acquiring size comprises;
The fast feedback channel number comprised by described each sub-frame of uplink obtains the close-loop power control information unit number of necessity that each descending sub frame comprises.
7. method according to claim 6, is characterized in that, describedly obtains by frame configuration index the HARQ feedback number of regions that each sub-frame of uplink comprises and comprises:
The HARQ feedback number of regions that each sub-frame of uplink comprises is obtained based on the mapping relations between the HARQ feedback number of regions that frame configuration index and each sub-frame of uplink of systemic presupposition comprise.
8. method according to claim 7, it is characterized in that, the described HARQ feedback number of regions comprised by described each sub-frame of uplink, the HARQ feedback channel number that HARQ feedback region comprises, and the fast feedback channel number that each sub-frame of uplink of each sub-frame of uplink feedback areas acquiring size comprises comprises:
Q m＝N fb*UL_FEEDBACK_SIZE–N H-Rgn，m*L HFB/N Reuse；
Wherein, Q mrepresent the fast feedback channel number that m sub-frame of uplink comprises; N fbrepresent the feedback resources number that each logical resource unit comprises; UL_FEEDBACK_SIZE represents each sub-frame of uplink feedback areas size; N h-Rgn, mrepresent the HARQ feedback number of regions that m sub-frame of uplink comprises; L hFBrepresent the HARQ feedback channel number that HARQ feedback region comprises; N reuserepresent the HARQ feedback channel number that a feedback resources can carry.
9. method according to claim 8, is characterized in that,
Described N fb=3, described N reuse=6.
10. method according to claim 8, is characterized in that, the close-loop power control information unit number that the described fast feedback channel number comprised by described each sub-frame of uplink obtains necessity that each descending sub frame comprises comprises:
T = ceil ( Σ m = 0 U - 1 Q m / D )
Wherein, T represents the close-loop power control information unit number of necessity that each descending sub frame comprises, and U represents that the sub-frame of uplink number that each frame comprises, D represent the descending sub frame number that each frame comprises.
11. methods according to claim 10, it is characterized in that, the close-loop power control information unit number of necessity that described control station and described subordinate station comprise according to described each descending sub frame obtains the actual close-loop power control information unit number comprised of each descending sub frame and comprises:
N PC＝2*ceil(T/2)，
Wherein, N pCrepresent the actual close-loop power control information unit number comprised of each descending sub frame, ceil represents the operation that rounds up.
12. methods according to claim 5, it is characterized in that, the close-loop power control information unit number of necessity that described control station and described subordinate station comprise according to described each descending sub frame and the fast feedback channel location information at described subordinate station, the close-loop power control information unit position obtaining corresponding described subordinate station comprises:
Described fast feedback channel location information comprises frame index i, index q in sub-frame of uplink index m and subframe mcorresponding close-loop power control information unit positional information is frame index i+1, descending sub frame index floor (s/T), index s modT in subframe, wherein, T represents the close-loop power control information unit number of necessity that each descending sub frame comprises, and s represents the fast feedback channel index within the scope of a frame.
13. methods according to claim 12, is characterized in that,
Described s = Σ j = 0 m - 1 Q j + q m ,
Wherein, Q jrepresent the fast feedback channel number that a jth sub-frame of uplink comprises.
The system of 14. 1 kinds of acquiring size of closed loop power control regions, is characterized in that, comprises control station and subordinate station, wherein:
Described control station and described subordinate station, include:
Acquisition module, for obtaining system configuration parameter, wherein, described system configuration parameter comprises: frame configuration index, the HARQ feedback channel number that hybrid automatic repeat-request HARQ feedback region comprises and each sub-frame of uplink feedback areas size;
Acquiring size of closed loop power control region module, for obtaining size of closed loop power control region according to described system configuration parameter and pre-defined rule, wherein, during described control station and subordinate stand, described acquiring size of closed loop power control region module comprises: necessary close-loop power control information unit number acquisition module, for obtaining the close-loop power control information unit number of necessity that each descending sub frame comprises according to described system configuration parameter and pre-defined rule; The actual close-loop power control information unit number acquisition module comprised, the close-loop power control information unit number for the necessity comprised according to described each descending sub frame obtains the actual close-loop power control information unit number comprised of each descending sub frame; Acquiring size of closed loop power control region submodule, for obtaining size of closed loop power control region according to the actual close-loop power control information unit number comprised of described each descending sub frame.
15. systems according to claim 14, is characterized in that:
Described control station also comprises: Resourse Distribute control information sending module, for sending Resourse Distribute control information after described closed loop power control region;
Described subordinate station also comprises: Resourse Distribute control information receiver module, for receiving Resourse Distribute control information after described closed loop power control region.
16. systems according to claim 14, is characterized in that:
Described control station and described subordinate station include: close-loop power control information unit position acquisition module, for the close-loop power control information unit position at the corresponding described subordinate station of fast feedback channel location acquisition of information at the close-loop power control information unit number of necessity that comprises according to described each descending sub frame and described subordinate station;
Described control station, also comprises: control station power adjustment message issues module, for the power adjustment message using described close-loop power control information unit to carry described subordinate station;
Described subordinate station, also comprises: subordinate stands power adjustment message acquisition module, for obtaining described power adjustment message from described close-loop power control information unit.
17. systems according to claim 14, is characterized in that, the close-loop power control information unit number acquisition module of described necessity comprises:
HARQ feedback number of regions obtains submodule, for being obtained the HARQ feedback number of regions that each sub-frame of uplink comprises by frame configuration index;
Fast feedback channel number obtains submodule, for the HARQ feedback number of regions comprised by described each sub-frame of uplink, the HARQ feedback channel number that each HARQ feedback region comprises, and the fast feedback channel number that each sub-frame of uplink of feedback areas acquiring size of each sub-frame of uplink comprises;
Necessary close-loop power control information unit number obtains submodule, and the fast feedback channel number for being comprised by described each sub-frame of uplink obtains the close-loop power control information unit number of necessity that each descending sub frame comprises.
18. systems according to claim 17, is characterized in that:
Fast feedback channel number obtains submodule, for being obtained the fast feedback channel number that each sub-frame of uplink comprises by following formula,
Q m＝N fb*UL_FEEDBACK_SIZE–N H-Rgn，m*L HFB/N Reuse；
Wherein, Q mrepresent the fast feedback channel number that m sub-frame of uplink comprises; N fbrepresent the feedback resources number that each logical resource unit comprises; UL_FEEDBACK_SIZE is each sub-frame of uplink feedback areas size; N h-Rgn, mrepresent the HARQ feedback number of regions that m sub-frame of uplink comprises; L hFBrepresent the HARQ feedback channel number that HARQ feedback region comprises; N reuserepresent the HARQ feedback channel number that a feedback resources can carry.
19. systems according to claim 18, is characterized in that,
The close-loop power control information unit number of described necessity obtains submodule, for being obtained the close-loop power control information unit number of necessity that each descending sub frame comprises by following formula,
T = ceil ( Σ m = 0 U - 1 Q m / D ) ,
Wherein, T represents the close-loop power control information unit number of necessity that each descending sub frame comprises, and U represents that the sub-frame of uplink number that each frame comprises, D represent the descending sub frame number that each frame comprises.
20. systems according to claim 19, is characterized in that, the described actual close-loop power control information unit number acquisition module comprised, for adopting following formula to obtain the actual close-loop power control information unit number comprised,
N PC＝2*ceil(T/2)，
Wherein, N pCrepresent the actual close-loop power control information unit number comprised of each descending sub frame, ceil represents the operation that rounds up.
21. systems according to claim 16, is characterized in that,
Close-loop power control information unit position acquisition module, for obtaining the positional information of close-loop power control information unit according to following method,
Described fast feedback channel location information comprises frame index i, index q in sub-frame of uplink index m and subframe mcorresponding close-loop power control information unit positional information is frame index i+1, descending sub frame index floor (s/T), index s modT in subframe, wherein, T represents the close-loop power control information unit number of necessity that each descending sub frame comprises, and s represents the fast feedback channel index within the scope of a frame.
22. systems according to any one of claim 14-21,
Described control station comprises one or more network elements following: grand control station, microcontroller station, slight control station, relay station;
Described subordinate station comprises one or more network elements following: terminal, relay station, microcontroller station, slight control station.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101646229A (en) * 2008-08-04 2010-02-10 中兴通讯股份有限公司 Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7218623B1 (en) * 2001-05-04 2007-05-15 Ipr Licensing, Inc. Coded reverse link messages for closed-loop power control of forward link control messages
CN100544228C (en) * 2006-04-30 2009-09-23 中兴通讯股份有限公司 A kind of collocation method of node B high-speed sharing information channel power control parameter
KR100978787B1 (en) * 2006-06-16 2010-08-30 삼성전자주식회사 Method and apparatus for controlling power in a communication system
CN101132205A (en) * 2006-08-24 2008-02-27 中兴通讯股份有限公司 Closed-loop power control method for code division multiple access system
CN101384069B (en) * 2007-09-05 2011-12-14 电信科学技术研究院 Power control parameter configuring method and related apparatus
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KR101022578B1 (en) * 2009-01-06 2011-03-16 엘지전자 주식회사 Method of performing paging message transmission process in wireless communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101646229A (en) * 2008-08-04 2010-02-10 中兴通讯股份有限公司 Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems";LAN/MAN Standards Committee of the IEEE Computer Society;《IEEE P802.16m/D5》;20100407;第514-517、522、528、539-541、728页 *

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