CN102883343B - One kind extension carrier path loss measurement method and relevant device - Google Patents
One kind extension carrier path loss measurement method and relevant device Download PDFInfo
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- CN102883343B CN102883343B CN201110196017.5A CN201110196017A CN102883343B CN 102883343 B CN102883343 B CN 102883343B CN 201110196017 A CN201110196017 A CN 201110196017A CN 102883343 B CN102883343 B CN 102883343B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The embodiment of the invention discloses one kind extension carrier path loss measurement method and relevant device, the path loss for calculating extension carrier wave realizes uplink power control.Present invention method includes：User equipment receives the triggering signaling that base station is sent；User equipment on the reference signal RS private resources of extension carrier wave, measures RS receiving power based on triggering signaling；User equipment receives the transmission power that base station sends RS；User equipment calculates the path loss of extension carrier wave according to RS receiving power and RS transmission power.
Description
Technical field
Set the present invention relates to communication technical field, more particularly to a kind of extension carrier path loss measurement method and correlation
It is standby.
Background technology
Third generation partner program (3GPP, 3rd Generation Partnership Project) is senior to be drilled for a long time
The 10/11st version (Rel-10/11) for entering system (LTE-A, Long Term Evolution-Advanced) is LTE the 8th edition
The enhancing of this (Rel-8) technology, lte-a system has the bandwidth requirement higher than LTE system, supports to be up to 1Gbits/s peak
Value Data speed.In order to meet LTE-A requirement, lte-a system is by carrier convergence (CA, Component Aggregation)
The method that technology extends system bandwidth as it, and largely use multiple-input, multiple-output (MIMO, Multiple-Input Multiple-
Output) technology and adaptive technique improve data rate and systematic function.
Under LTE-ARel-10 carrier convergence scenes, a user equipment (UE, User Equipment) can at most be supported
5 member carriers (CC, Component Carrier), system can configure a pair up (UL, Up Link) and descending to UE
The main carrier (PCC, Primary Component Carrier) of (DL, Down Link), is carried supplemented by remaining up-downgoing carrier wave
Ripple (SCC, Secondary Component Carrier), the cell where main carrier and secondary carrier is called main plot respectively
(Pcell) and secondary cell (Scell), as shown in Figure 1.UE Physical Uplink Control Channel (PUCCH, Physical Uplink
Control Channel) it can only be sent on up PCC, Physical Uplink Shared Channel (PUSCH, Physical Uplink
Shared Channel) it can be sent on up PCC and up SCC.
In lte-a system, for convenience of to Radio Link progress channel estimation or measurement, meeting insertion ginseng in signal is sent
Signal (RS, Reference Signal) is examined, several different types of reference signal bags are provided in LTE-A downlinks
Include：Public reference signal (CRS, Common Reference Signal), channel state information reference signals (CSI-RS,
Channel State Information-Reference Signal) etc..These reference signals can be in frequency domain, time domain or code
Domain and different data symbol are multiplexed, due to reference signal to spectrum efficiency be do not have it is contributive, thus should reduce as far as possible by
The loss of spectral efficiency caused in expense.
In LTE-A R10, the member carrier for carrier convergence is all the Independent Carrier Wave of backward compatibility, from single carrier wave
From the point of view of, be with Rel-8/9 as, can be used for Rel-8/9 user.Some non-post may be supported in LTE-AR11
To compatible carrier wave, carrier wave is referred to as extended, can be the 6 kinds of standard bandwidths or nonstandard bandwidth supported in LTE-AR10, these
Carrier wave cannot function as independent carrier wave and exist, it must be attached to it is other can self-existent carrier wave (such as Rel-10
Independent Carrier Wave).
In LTE-A R10, path loss (abbreviation path loss (PL, Path Loss)) refers to after by channel fading
What is obtained receives the energy loss of signal and original transmitted signal, and UE can measure CRS receiving power RSRP first, then pass through
CRS receiving power and base station tell UE CRS transmission power to calculate path loss PL by high-level signaling, then UE meetings
The PL calculated the path losses for being used for uplink are compensated.
The inventors found that at least there is following defect in prior art：In LTE-A R11, newly-increased extension is carried
Ripple can not use the CRS of existing Independent Carrier Wave, due to without CRS thus the calculating of path loss can not be carried out.
The content of the invention
The embodiments of the invention provide one kind extension carrier path loss measurement method and relevant device, for calculating extension
The path loss of carrier wave, realizes uplink power control.
A kind of extension carrier path loss measurement method provided in an embodiment of the present invention, including：
User equipment obtains the centre frequency of the centre frequency of extension carrier wave and the Independent Carrier Wave of extension carrier wave attachment；
User equipment according to extension carrier wave centre frequency and Independent Carrier Wave centre frequency, calculate extension carrier wave relative to
The energy excursion of Independent Carrier Wave；
User equipment is calculated according to the energy excursion of path loss and extension carrier wave relative to Independent Carrier Wave of Independent Carrier Wave
Extend the path loss of carrier wave.
Another extension carrier path loss measurement method provided in an embodiment of the present invention, including：
User equipment receives the triggering signaling that base station is sent；
User equipment on the RS private resources of extension carrier wave, measures RS receiving power based on triggering signaling；
User equipment receives the transmission power that base station sends RS；
User equipment calculates the path loss of extension carrier wave according to RS receiving power and RS transmission power.
A kind of method for assisting user equipment to perform extension carrier path loss measurement provided in an embodiment of the present invention, bag
Include：
Base station is sent for triggering the receiving power that user equipment measurement extends the reference signal RS of carrier wave to user equipment
Triggering signaling；
Base station sends RS on the RS private resources of extension carrier wave to user equipment；
Base station notifies the transmission power of the RS for calculating the path loss for extending carrier wave to user equipment.
A kind of user equipment provided in an embodiment of the present invention, including：
Acquiring unit, the center frequency for obtaining the centre frequency of extension carrier wave and the Independent Carrier Wave of extension carrier wave attachment
Rate；
Energy excursion computing unit, for the centre frequency and the centre frequency of Independent Carrier Wave according to extension carrier wave, is calculated
Extend energy excursion of the carrier wave relative to Independent Carrier Wave；
Carrier path loss calculation unit is extended, for the path loss according to Independent Carrier Wave and extension carrier wave relative to only
The energy excursion of vertical carrier wave, calculates the path loss of extension carrier wave.
Another user equipment provided in an embodiment of the present invention, including：
Signaling receiving unit is triggered, the triggering signaling for receiving base station transmission；
Receiving power measuring unit, for, in the RS private resources of extension carrier wave, measurement RS's to connect based on triggering signaling
Receive power；
Transmission power receiving unit, RS transmission power is sent for receiving base station；
Carrier path loss calculation unit is extended, for the receiving power and RS transmission power according to RS, extension is calculated
The path loss of carrier wave.
A kind of base station provided in an embodiment of the present invention, including：
Signaling transmitting element is triggered, the reference of carrier wave is extended for triggering user equipment measurement for being sent to user equipment
The triggering signaling of signal RS receiving power；
Reference signal transmitting element, for sending RS to user equipment on the RS private resources of extension carrier wave；
Transmission power notification unit, for by for calculate extend carrier wave path loss RS transmission power notify to
User equipment.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
In the embodiment of the present invention provides a kind of scheme, user equipment is by extending the centre frequency and Independent Carrier Wave of carrier wave
Centre frequency calculate extension carrier wave energy excursion, then according to extension carrier wave energy excursion and Independent Carrier Wave path damage
Consumption calculates the path loss of extension carrier wave, and user equipment can be carried directly when carrying out uplink using the extension calculated
The path loss of ripple carries out uplink power control.
In another scheme provided in an embodiment of the present invention, base station sends triggering signaling to user equipment, is then touching
Indicate that UE receives reference signal RS on RS private resources under the triggering of signaling, user equipment is on RS private resources, measurement
Go out RS receiving power, then receive the transmission power that base station sends RS, end user's equipment is according to RS receiving power and RS
Transmission power calculate the path loss of extension carrier wave, user equipment can be directly using calculating when carrying out uplink
Extension carrier wave path loss carry out uplink power control.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 for carrier aggregation in lte-a system in the prior art schematic diagram；
Fig. 2 is a kind of schematic diagram for extending carrier path loss measurement method provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram provided in an embodiment of the present invention for extending carrier wave；
Fig. 4 is another schematic diagram for extending carrier path loss measurement method provided in an embodiment of the present invention；
Fig. 5 is another schematic diagram for extending carrier path loss measurement method provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram that subframe provided in an embodiment of the present invention is sent on antenna port；
Fig. 7 is a kind of schematic diagram of user equipment provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of another user equipment provided in an embodiment of the present invention；
Fig. 9 is a kind of schematic diagram of base station provided in an embodiment of the present invention.
Embodiment
The embodiments of the invention provide one kind extension carrier path loss measurement method and relevant device, for calculating extension
The path loss of carrier wave, realizes uplink power control.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of embodiment of the invention, and not all embodiments.Based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained, belongs to the scope of protection of the invention.
A kind of extension carrier path loss measurement method provided in an embodiment of the present invention, as shown in Fig. 2 including：
201st, user equipment obtains the centre frequency of the centre frequency of extension carrier wave and the Independent Carrier Wave of extension carrier wave attachment.
In embodiments of the present invention, extension carrier wave can not be individually present, it is necessary to which being attached to Independent Carrier Wave, (what is be attached to is only
Vertical carrier wave is referred to herein as Attached CC), extension carrier wave can include：Extend carrier wave (Extension CC) and fragment carrier wave
(Segment CC) and other non-backward compatibles carrier wave, wherein, extension carrier wave and any one Independent Carrier Wave are non-conterminous, and
Fragment carrier wave and Independent Carrier Wave are adjacent, as shown in Figure 3.
In embodiments of the present invention, in the centre frequency of user equipment acquisition extension carrier wave and accompanying Independent Carrier Wave
Frequency of heart can be obtained by the frequency range for the Independent Carrier Wave for extending carrier wave and attachment, for example, extend the frequency range of carrier wave
For 921MHz to 927MHz, then the centre frequency for extending carrier wave is 924MHz, the frequency model of the Independent Carrier Wave of extension carrier wave attachment
Enclose for 935MHz to 945MHz, then the centre frequency of Independent Carrier Wave is 940MHz.
202nd, user equipment calculates extension carrier wave phase according to the centre frequency of extension carrier wave and the centre frequency of Independent Carrier Wave
For the energy excursion of Independent Carrier Wave.
In embodiments of the present invention, user equipment is expanded the centre frequency of carrier wave and the centre frequency of Independent Carrier Wave
Afterwards, the difference of the centre frequency of carrier wave that can be expanded and the centre frequency of Independent Carrier Wave, and according to default difference on the frequency and energy
The corresponding relation data of amount skew calculates energy excursion of the carrier wave relative to Independent Carrier Wave that be expanded.After multipath fading
Path loss being averaged in time is an only value relevant with frequency, can by empirical value or multiple analog simulation,
The energy excursion in each different centre frequency is obtained, so as to collect as empirical value or simulation result, these numerical value can
It is preset in software or hardware, and then extension carrier wave can be calculated based on the software or hardware relative to Independent Carrier Wave
Energy excursion.In actual applications, by Multi simulation running, the setting can be obtained by setting a center frequency difference
The relation of center frequency difference and path loss, as shown in table 1 below, the energy that extension carrier wave can be just calculated by the table is inclined
Move.
For example, in upper table, energy of the 900MHz centre frequencies relative to 890MHz centre frequencies under 100 meters of decline distances
Amount skew is -0.0970501, and the energy excursion under 200 meters of decline distances is -0.09705.Wherein, f is extension carrier wave or only
The centre frequency of vertical carrier wave, lamda is wavelength, and delta_PL (d=100m) is two neighboring center when multipath fading is 100m
Energy excursion between frequency, delta_PL (d=200m) is when multipath fading is 200m between two neighboring centre frequency
Energy excursion.It should be noted that the table can be obtained by analog simulation, it can be obtained by the table by center frequency difference, calculating
Extend energy excursion of the carrier wave relative to Independent Carrier Wave.Certainly with the change of application environment, such as multipath fading distance, temperature
Change, the data of form are not usually changeless.The inquiry or calculating of above table can be realized by software, soft
Part search algorithm is generally easy to realize.Those skilled in the art can also will reflect center frequency according to historical experience or simulation result
The data storage of corresponding relation reads a frequency relative to another frequency within hardware, if desired between rate difference and path loss
The energy excursion of rate, can be stored in the data in hardware logic electric circuit to realize by inquiry, so obtaining the tool of energy excursion
Body implementation not immobilizes.
203rd, energy excursion of the user equipment according to the path loss of Independent Carrier Wave and extension carrier wave relative to Independent Carrier Wave,
Calculate the path loss of extension carrier wave.
In embodiments of the present invention, when user equipment calculate extension carrier wave relative to Independent Carrier Wave energy excursion after,
Due to the path loss after multipath fading in time can be averagely an only energy excursion relevant with difference on the frequency, it is possible to
The path loss of extension carrier wave is calculated by the path loss of the Independent Carrier Wave and the energy excursion of extension carrier wave.Wherein, solely
The path loss of vertical carrier wave can be directly using the path loss values of historical record before, it would however also be possible to employ following manner is obtained solely
The path loss of vertical carrier wave：In embodiments of the present invention, user equipment can be by the Independent Carrier Wave accompanying by extension carrier wave
Upper transmission CRS mode calculates the path loss for obtaining Independent Carrier Wave.In practical application scene, a kind of optional implementation
It is：
User equipment measures the receiving power RSRP of the CRS on the Independent Carrier Wave；
User equipment receives the transmission power of the CRS on the Independent Carrier Wave that base station is sent
referencesignalpower；
User equipment calculates the path loss PL of Independent Carrier Wave in the following wayBackward Compatible Carrier：
PLBackward Compatible Carrier=referencesignalpower-RSRP.
In embodiments of the present invention, one kind of step 203 is optionally achieved in that user equipment is according to Independent Carrier Wave
Path loss and the energy excursion of extension carrier wave calculate the path loss of extension carrier wave in the following way
PLExtension/Segment Carrier：
PLExtension/Segment Carrier=PLBackward Compatible Carrier·PPL_Offset
Wherein, PLBackward Compatible CarrierFor the path loss of Independent Carrier Wave, PPL_OffsetTo extend the energy of carrier wave
Skew.
Another to be optionally achieved in that, user equipment is according to the path loss of Independent Carrier Wave and the energy of extension carrier wave
Skew calculates the path loss PL of extension carrier wave in the following wayExtension/Segment Carrier：
PLExtension/Segment Carrier(dB)=PLBackward Compatible Carrier(dB)+PPL_Offset(dB)
Wherein, PLExtension/Segment Carrier(dB)=10lg PLExtension/Segment Carrier,
PLBackward Compatible Carrier(dB)=10lg PLBackward Compatible Carrier,
PLExtension/Segment Carrier(dB)=10lg PLExtension/Segment Carrier。
In embodiments of the present invention, user equipment is by extending the centre frequency of carrier wave and the centre frequency meter of Independent Carrier Wave
The energy excursion of extension carrier wave is calculated, extension is then gone out according to the path loss calculation of the energy excursion of extension carrier wave and Independent Carrier Wave
The path loss of carrier wave, user equipment can be directly using the path loss of the extension carrier wave calculated when carrying out uplink
Carry out uplink power control.
Another extension carrier path loss measurement method provided in an embodiment of the present invention, as shown in figure 4, including：
401st, user equipment receives the triggering signaling that base station is sent.Triggering signaling is used to trigger connecing for user equipment measurement RS
Receive power.
Wherein, triggering signaling is sent from base station to user equipment, and triggering signaling can be the configured information of 1 bit (bit),
Triggering signaling can also include the preset positional information for being used to send RS fixed resource, and triggering signaling can also include RS's
Configuration information, RS configuration information is used for the resource location for indicating to send RS.Certain RS configuration information can also carry with
In confidence order, user equipment can also get RS configuration information by configuration signal.1bit is only included in signaling if triggering
Configured information, then trigger signaling be served only for indicating whether to send RS on a RS private resource, RS private resources can be
Preset fixed resource position, the configuration information that can also be carried by configuration signal is indicated.In actual applications, base station to
The triggering signaling that family equipment is sent can have diversified forms, for example, can be (such as to control to believe in physical down in physical layer signaling
Downlink Control Information (DCI, the Downlink in road (PDCCH, Physical Downlink Control Channel)
Control Information) in increase 1bit be used for trigger or media access control layer control unit (MAC CE,
Medium Access Control Control Element), it can also be radio resource control signaling (RRC, Radio
Resource Control), in actual applications, configuration signal can also be physical layer signaling or MAC CE, may be used also
To be RRC, herein for illustrative purposes only, it is not construed as limiting.
402nd, user equipment measures RS receiving power based on triggering signaling on the RS private resources of extension carrier wave.
In embodiments of the present invention, user equipment is received after the triggering signaling of base station transmission, by triggering signaling or pre-
Putting pattern or configuration signal user equipment can know base station will send RS on what resource location, when base station starts to send RS
When, user equipment on RS private resources, can measure RS receiving power.Wherein, the RS private resource bags of carrier wave are extended
Include the sub-frame resources in time domain, the sub-carrier resources on frequency domain, the antenna port resource on spatial domain, the configuration money on configuration domain
Source.The configuration resource that configuration domain can be reflected on Configuration Type, configuration domain is exactly a kind of configuration mode.
403rd, user equipment receives the transmission power that base station sends RS.
In embodiments of the present invention, base station can notify transmission power used in transmission RS to user equipment, in reality
In, there are a variety of implementations, a kind of optional mode is that user equipment is still measured on extension carrier wave using CRS
Receiving power RSRP calculates path loss, but using it is lower than CRS density in Independent Carrier Wave (such as can be time domain, frequency
It is lower on domain, spatial domain etc.) CRS, such as only when needing CRS just by signaling trigger base station sent in specific sub-frame
CRS, compared with each subframe (cycle is 1ms) has CRS on Independent Carrier Wave, this aperiodic CRS hair on extension carrier wave
Send frequency much lower, overall overhead is also much smaller, thus meet what the realizing route on the basis of RS expenses are less was lost
Calculate.When RS is aperiodic CRS, user equipment receives the transmission power for the aperiodic CRS that base station is notified by high-level signaling.
Another optional mode is that user equipment can send CSI-RS on extension carrier wave, when RS is CSI-RS,
User equipment receives the transmission power for the CSI-RS that base station is notified by triggering signaling or the first notice signaling, wherein, first leads to
Know signaling from base station to notification of user equipment CSI-RS transmission power to increase；
Another optional mode is, user equipment can be sent on extension carrier wave demodulated reference signal (DMRS,
Demodulation Reference Signal), when RS is DMRS, user equipment is believed by triggering signaling or the second notice
Order receives the transmission power for the DMRS that base station is notified, wherein, the second notice signaling is from base station in order to notification of user equipment DMRS
Transmission power and increase.
It should be noted that there is no point of sequencing between 402 and 403,402 can be first carried out and perform 403 again, also may be used
402 are performed again to first carry out 403, and 402 and 403 can also be performed simultaneously, are not construed as limiting herein.
404th, user equipment calculates the path loss of extension carrier wave according to RS receiving power and RS transmission power.
In embodiments of the present invention, when user equipment measures RS receiving power and receives the hair for the RS that base station is notified
Penetrate after power, user equipment can calculate the path loss for extending carrier wave according to RS receiving power and transmission power.In reality
In, one kind is optionally achieved in that：User equipment is calculated according to RS receiving power and transmission power extends carrier wave
Path loss PLExtension/Segment CarrierIn the following way：
PLExtension/Segment Carrier=referencesignalpower-RSRP
Wherein, referencesignalpower is the RS transmission power received in 403, and RSRP is to measure in 402
The RS gone out receiving power.
In embodiments of the present invention, calculate after path loss, user equipment is carrying out Physical Uplink Control Channel
PUCCH, it is necessary to calculate each up letter when Physical Uplink Shared Channel PUSCH and uplink sounding reference signal SRS transmission
The transmission power in road or reference signal, can computationally use the path loss calculated in 404 during row transmission power
PLExtension/Segment CarrierCarry out path loss compensation.
In embodiments of the present invention, user equipment measures RS receiving power, then receives base on RS private resources
Stand and send RS transmission power, end user's equipment calculates the path of extension carrier wave according to RS receiving power and transmission power
Loss, user equipment directly can carry out up work(when carrying out uplink using the path loss of the extension carrier wave calculated
Rate is controlled.
A upper embodiment describes the extension carrier path loss measurement method of the embodiment of the present invention from the angle of user equipment,
Next introduce a kind of assistance user equipment provided in an embodiment of the present invention from the angle of base station and perform extension carrier path loss
The method of measurement, as shown in figure 5, including：
501st, base station sends triggering signaling to user equipment.Triggering signaling is used to trigger the reception work(that user equipment measures RS
Rate.
Wherein, triggering signaling can be 1bit configured information, and triggering signaling can also be including preset for sending RS
Fixed resource positional information, for example, base station can be with preset many set/positions, and number one by one, trigger signaling and only need to take
Which specific set with a preset many sets/position/numbering, and without the corresponding specific RS of preset position is special
Resource (these are obtained by preset pattern) is carried in triggering signaling, and to reduce expense, triggering signaling can also include RS's
Configuration information, RS configuration information is used for the resource location for indicating to send RS.If triggering the configured information that signaling is 1bit, touch
Signaling is served only for indicating whether to send RS on a RS private resource, and RS private resources can be preset fixed resource position
Put, the configuration information that can also be carried by configuration signal is indicated.Certain RS configuration information can also be carried in configuration signal
In, user equipment can also get RS configuration information from configuration signal.In actual applications, base station is sent to user equipment
Triggering signaling can have diversified forms, for example can be physical layer signaling (such as in PDCCH Downlink Control Information DCI increase
Plus 1bit) or MAC CE, RRC is can also be, in actual applications, configuration signal can also be physical layer signaling,
It can be MAC CE, can also be RRC, herein for illustrative purposes only, be not construed as limiting..
User receives the triggering signaling, can know that base station will send RS on which resource location, and such as base station can be with
RS is sent in a fixed resource location, can not also be fixed, but transmission RS resource location is matched somebody with somebody into confidence by RS
The form of breath is included in triggering signaling.If only including 1bit information in triggering signaling, illustrate that triggering signaling is included in one
Individual fixed resource position sends RS.
502nd, base station sends reference signal on the RS private resources of extension carrier wave to user equipment.
In embodiments of the present invention, base station is sent after triggering signaling to user, RS private resource of the base station in extension carrier wave
On to user equipment send reference signal, in actual applications, RS private resources on frequency domain specifically, extension carrier wave RS it is special
Bandwidth or the special subcarriers of RS, the special subcarrier of bandwidth or RS special RS used herein are preset or are included in
In configuration signal or triggering signaling.RS private resources are on spatial domain specifically, at least one special RS of extension carrier wave antenna
Port, at least one special used RS antenna port is preset or included in configuration signal or triggering signaling.RS is special
With resource specifically, transmission the RS special RS of extension carrier wave number of times is 1 time or n times in time domain, N ＞ 1, N is natural number,
The number of times for sending RS is preset or included in configuration signal or triggering signaling.
When RS transmission times is n times, during N ＞ 1, base station is sent on the resource location of extension carrier wave to user equipment
N times RS interval can be more than or equal to 1ms, and RS sub-frame offset is less than two adjacent R S interval, send RS subframe it
Between can also use frequency-hopping mode.
Optionally, on frequency domain, base station can in preset bandwidth or preset subcarrier to user equipment send RS,
It for example, base station can specify some bandwidth or specify some subcarrier to send RS, can not also specify, and be integrally fixed at one
Specific frequency sends RS, is such as fixed on band center and sends RS in the 6RB of the flat rate in center frequency.Optionally, send
There may be frequency hopping between RS subframe, identical subcarrier or different subcarriers can be corresponded to for different subframes, when
When different subframes corresponds to different subcarriers, different subcarriers are circulated according to preset period of sub-frame.For example, next
There is certain skew in the RS positions of subframe and the RS of previous subframe position, these frequency offsets can be formed on frequency domain
One large period, restarts to recirculate when reaching certain period of sub-frame.
On spatial domain, subframe is sent using antenna port, as shown in fig. 6, for example, have eight subframe A, B, C, D, E,
In the case of F, G, H, on spatial domain, the first situation only sends subframe using individual antenna port, for example, fixed selection one
Antenna port, subframe A, B, C, D, E, F, G, H only use antenna port 0, naturally it is also possible to be other ports；Fixed selection is more
Individual antenna port, for example, select two antenna ports 0 and 1, and subframe A uses antenna port 0, and subframe B uses antenna port 1, its
Its subsequent subframe is recycled using antenna port 0 and antenna port 1 according to preset period of sub-frame successively；In the case of second,
Subframe is sent using multiple antenna ports joint, such as fixed two joints of antenna port 0 and 1 of selection send subframe, eight sons
Frame is all circulated according to certain period of sub-frame；Such as subframe A uses antenna port 0 and 1, and subframe B uses antenna port 2 and 3, subframe
C uses 0 and 1, and subsequent subframe is recycled by preset period of sub-frame successively in this order.It is optional excellent, in order to improve
Diversity gain, on spatial domain, for the different corresponding antenna port differences of subframe, when different subframes specifies different antennas
When port number and antenna end slogan, different antenna port numbers and antenna end slogan are repeated in preset period of sub-frame.
Herein for illustrative purposes only, it should not be construed as limiting the invention.
It should be noted that in embodiments of the present invention, the resource location of extension carrier wave may be embodied in triggering signaling,
The resource location of extended resources can specifically include the sub-frame resources in time domain, the sub-carrier resources on frequency domain, the day on spatial domain
Configuration resource on line port resource, configuration domain.When RS be CSI-RS when, base station configuration domain on configuration resource for one with
On different CSI-RS configuration.
503rd, base station notifies RS transmission power to user equipment.
In embodiments of the present invention, base station can notify transmission power used in transmission RS to user equipment, in reality
In, there are a variety of implementations, a kind of optional mode is that user equipment is still measured on extension carrier wave using CRS
Receiving power RSRP calculates path loss, but using it is lower than CRS density in Independent Carrier Wave (such as can be time domain, frequency
It is lower on domain, spatial domain etc.) CRS, such as only when needing CRS just by signaling trigger base station sent in specific sub-frame
CRS, compared with each subframe (cycle is 1ms) has CRS on Independent Carrier Wave, this aperiodic CRS hair on extension carrier wave
Send frequency much lower, overall overhead is also much smaller, thus meet what the realizing route on the basis of RS expenses are less was lost
Calculate.When RS is aperiodic CRS, the transmission power that base station passes through the aperiodic CRS of high-level signaling notifying user equipment.
Another optional mode is that user equipment can send CSI-RS on extension carrier wave, when RS is CSI-RS,
Base station by triggering the transmission power of signaling or the first notice signaling to notification of user equipment CSI-RS, wherein, first notify letter
Order is from base station in order to increase to notification of user equipment CSI-RS transmission power；
Another optional mode is that user equipment can send DMRS on extension carrier wave, when RS is DMRS, base station
By triggering the transmission power of signaling or the second notice signaling to the DMRS of notification of user equipment, wherein, the second notice signaling by
Base station to notification of user equipment DMRS transmission power in order to increase.
In embodiments of the present invention, base station sends triggering signaling to user equipment, is then issued in the triggering of triggering signaling
RS is sent, so that user equipment measures RS receiving power on RS private resources, the transmitting that base station sends RS is then received
Power, end user's equipment calculates the path loss of extension carrier wave according to RS receiving power and transmission power, when user sets
It is standby directly to carry out uplink power control using the path loss of the extension carrier wave calculated when carrying out uplink.
Above example describes extension carrier path loss measurement method provided in an embodiment of the present invention respectively, next
Introduce the user equipment and base station and communication system using extension carrier path loss measurement method provided in an embodiment of the present invention.
A kind of user equipment provided in an embodiment of the present invention, as shown in fig. 7, user equipment 700 includes：
Acquiring unit 701, the center for obtaining the centre frequency of extension carrier wave and the Independent Carrier Wave of extension carrier wave attachment
Frequency；Acquiring unit 701 can be an interface；
Energy excursion computing unit 702, for according to acquiring unit 701 get extension carrier wave centre frequency and solely
The centre frequency of vertical carrier wave, calculates energy excursion of the extension carrier wave relative to Independent Carrier Wave；
Carrier path loss calculation unit 703 is extended, is calculated for the path loss according to Independent Carrier Wave and energy excursion
Energy excursion of the extension carrier wave relative to Independent Carrier Wave that unit 702 is calculated, calculates the path loss of extension carrier wave.
Energy excursion computing unit 702 and extension carrier path loss calculation unit 703 can be included in a processor
In, it is different processor units respectively.
Optionally, energy excursion computing unit 702 can specifically include：
Center frequency difference computing module, for calculating in the centre frequency of extension carrier wave and the centre frequency of Independent Carrier Wave
Frequency of heart is poor；
Energy excursion computing module, for according to center frequency difference, calculating energy of the extension carrier wave relative to Independent Carrier Wave
Skew.
It should be noted that in embodiments of the present invention, the path loss of Independent Carrier Wave can be directly using history before
The path loss values of record, can also obtain the path loss of Independent Carrier Wave, now, user equipment 700 also includes by calculating：
Independent Carrier Wave path loss calculation unit, the path loss for calculating Independent Carrier Wave.
In actual applications, Independent Carrier Wave path loss calculation unit can specifically include：
Receiving power measurement module, the receiving power RSRP for measuring the CRS on Independent Carrier Wave；
Transmission power receiving module, the transmission power of the CRS on Independent Carrier Wave is sent for receiving base station
referencesignalpower；
Independent Carrier Wave path loss calculation module, the path loss for calculating Independent Carrier Wave in the following way
PLBackward Compatible Carrier：
PLBackward Compatible Carrier=referencesignalpower-RSRP.
Optionally, extension carrier path loss calculation unit 703 specifically for calculating extension carrier wave in the following way
Path loss PLExtension/Segment Carrier：
PLExtension/Segment Carrier=PLBackward Compatible Carrier·PPL_Offset
Wherein, PLBackward Compatible CarrierFor Independent Carrier Wave path loss, PPL_OffsetFor energy excursion computing unit
702 calculate gained；
Or,
PLExtension/Segment Carrier(dB)=PLBackward Compatible Carrier(dB)+PPL_Offset(dB)
Wherein, PLExtension/Segment Carrier(dB)=10lg PLExtension/Segment Carrier,
PLBackward Compatible Carrier(dB)=10lg PLBackward Compatible Carrier,
PLExtension/Segment Carrier(dB)=10lg PLExtension/Segment Carrier。
Above example describe only the structural relation between each unit module, in actual applications, each unit module
Execution method refers to the method shown in Fig. 2, and here is omitted.
In embodiments of the present invention, energy excursion computing unit 702 is by extending the centre frequency and Independent Carrier Wave of carrier wave
Centre frequency calculate the energy excursion of extension carrier wave, then extend carrier path loss calculation unit 703 according to extension carrier wave
Energy excursion and the path loss calculation of Independent Carrier Wave go out to extend the path loss of carrier wave, user equipment is carrying out uplink
When can directly using calculate extension carrier wave path loss carry out uplink power control.
Another user equipment provided in an embodiment of the present invention, as shown in fig. 7, user equipment 800 includes：
Signaling receiving unit 801 is triggered, the triggering signaling for receiving base station transmission；Triggering signaling receiving unit 801 can
To be interface；
Receiving power measuring unit 802, for, in the RS private resources of extension carrier wave, being measured based on the triggering signaling
RS receiving power；
Transmission power receiving unit 803, RS transmission power is sent for receiving base station；Transmission power receiving unit 803
It can be an interface；
Carrier path loss calculation unit 804 is extended, for connecing for the RS that is measured according to receiving power measuring unit 802
The transmission power that power and transmission power receiving unit 803 are received is received, the path loss of extension carrier wave is calculated.Extend carrier path
Footpath loss calculation unit 804 can be processor.
Optionally, when RS is aperiodic CRS, transmission power receiving unit 803, specifically for being received by high-level signaling
The transmission power for the aperiodic CRS that base station is notified.
Optionally, when RS is CSI-RS, transmission power receiving unit 803, specifically for by triggering signaling or first
Notice signaling receives the transmission power for the CSI-RS that base station is notified, wherein, the first notice signaling is from base station in order to user equipment
Notify CSI-RS transmission power and increase；
Optionally, when RS is DMRS, transmission power receiving unit 803, specifically for by triggering signaling or second logical
Know that signaling receives the transmission power for the DMRS that base station is notified, wherein, the second notice signaling is from base station in order to notification of user equipment
DMRS transmission power and increase.
Optionally, extension carrier path loss calculation unit 804, specifically for calculating extension carrier wave in the following way
Path loss PLExtension/Segment Carrier：
PLExtension/Segment Carrier=referencesignalpower-RSRP
Wherein, referencesignalpower is that the reception of transmission power receiving unit 803 is obtained, and RSRP is receiving power
The measurement of measuring unit 802 is obtained.
Above example describe only the structural relation between each unit module, in actual applications, each unit module
Execution method refers to the method shown in Fig. 4, and here is omitted.
In embodiments of the present invention, receiving power measuring unit 802 is by triggering the triggering of signaling in the special of extension carrier wave
With the receiving power in resource, measuring RS, then transmission power receiving unit 803 receives the transmission power that base station sends RS,
Finally extension carrier path loss calculation unit 804 calculates the path of extension carrier wave according to RS receiving power and transmission power
Loss, user equipment directly can carry out up work(when carrying out uplink using the path loss of the extension carrier wave calculated
Rate is controlled.
A upper embodiment describes user equipment provided in an embodiment of the present invention from the angle of user equipment, next from base station
Angle introduce base station provided in an embodiment of the present invention, as shown in figure 8, base station 900 includes：
Signaling transmitting element 901 is triggered, carrier wave is extended for triggering user equipment measurement for being sent to user equipment
Reference signal RS receiving power triggering signaling；
Reference signal transmitting element 902, for sending RS to user equipment on the RS private resources of extension carrier wave；
Transmission power notification unit 903, for the transmission power of the RS for calculating the path loss for extending carrier wave to be led to
Know to user equipment.
Optionally, triggering signaling transmitting element 901 is specifically for the finger of the triggering signaling that is sent to user equipment for 1bit
Show information；Or, the triggering signaling 901 triggering signaling specifically for being sent to user equipment of transmitting element is included in preset be used for
Send the positional information of RS fixed resource；Or, triggering signaling 901 triggering specifically for being sent to user equipment of transmitting element
Signaling includes RS configuration information, wherein, RS configuration information is used for the resource location for indicating to send RS.
Optionally, when RS is aperiodic CRS, transmission power notification unit 903, specifically for will be non-by high-level signaling
Cycle CRS transmission power is notified to user equipment.
Optionally, when RS is CSI-RS, transmission power notification unit 903, specifically for by triggering signaling or first
Notice signaling notifies CSI-RS transmission power to user equipment, and the first notice signaling is from base station in order to notification of user equipment
CSI-RS transmission power and increase；
Optionally, when RS is DMRS, transmission power notification unit 903, specifically for by triggering signaling or second logical
Know that signaling notifies DMRS transmission power to user equipment, the second notice signaling is from base station in order to notification of user equipment DMRS
Transmission power and increase.
Optionally, on frequency domain, reference signal transmitting element 902 is special in bandwidth or the RS special RS of extension carrier wave
RS is sent to user equipment on subcarrier, wherein, send the special bandwidth of RS or the special subcarriers of RS are preset or are included in
Configuration signal or included in triggering signaling in.On spatial domain, reference signal transmitting element 902 is special extremely in the RS of extension carrier wave
RS is sent on a few antenna port, wherein, it is preset or included in confidence to send at least one special antenna port of RS
Make or included in triggering signaling.In time domain, reference signal transmitting element 902 extension carrier wave RS private resources on to
Family equipment transmission 1 time or the RS of n times, N ＞ 1, N is natural number, and the number of times for sending RS is preset or included in configuration signal or bag
It is contained in triggering signaling.
Optionally, on frequency domain, reference signal transmitting element 902, specifically for being carried in preset bandwidth or preset son
On ripple RS is sent to user equipment；When there is frequency hopping between RS subframe, for different subframe correspondence identical subcarriers
Or different subcarriers, when the different subcarrier of different subframe correspondences, different subcarriers are in preset period of sub-frame
Repeat.
Optionally, on spatial domain, reference signal transmitting element 902, specifically for the antenna specified for different subframes
Port, when different subframes specifies different antenna ports, different antenna ports are repeated in preset period of sub-frame.
Above example describe only the structural relation between each unit module, in actual applications, each unit module
Execution method refers to the method shown in Fig. 5, and here is omitted.
In embodiments of the present invention, triggering signaling transmitting element 901 sends triggering signaling to user equipment, then referring to letter
Number transmitting element 902 sends RS under the triggering of triggering signaling, so that user equipment is on RS private resources, measures connecing for RS
Power is received, then transmission power notification unit 903 sends RS transmission power to user equipment, and end user's equipment is according to RS's
Receiving power and transmission power calculate the path loss of extension carrier wave, can be direct when user equipment is carrying out uplink
Uplink power control is carried out using the path loss of the extension carrier wave calculated.
Can be with one of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method is
The hardware of correlation is instructed to complete by program, described program can be stored in a kind of computer-readable recording medium, on
It can be read-only storage, disk or CD etc. to state the storage medium mentioned.
A kind of extension carrier path loss measurement method provided by the present invention and relevant device have been carried out in detail above
Introduce, for those of ordinary skill in the art, according to the thought of the embodiment of the present invention, in embodiment and application
On will change, in summary, this specification content should not be construed as limiting the invention.
Claims (22)
1. one kind extension carrier path loss measurement method, it is characterised in that including：
User equipment receives the triggering signaling that base station is sent；
The user equipment based on it is described triggering signaling extension carrier wave reference signal RS private resources on, measuring reference signals
RS receiving power, the RS is aperiodic RS；
The user equipment receives the transmission power that the base station sends the RS；
The user equipment is according to the receiving power of the RS and the transmission power of the RS, and the path for calculating extension carrier wave is damaged
Consumption.
2. extension carrier path loss measurement method according to claim 1, it is characterised in that
The triggering signaling is 1 bit bit configured informations；
Or, the triggering signaling includes the preset positional information for being used to send the fixed resource of the RS；
Or, the triggering signaling includes the configuration information of the RS, the configuration information of the RS is used to indicate to send the RS's
Resource location.
3. extension carrier path loss measurement method according to claim 1 or 2, it is characterised in that when the RS is non-
During cycle public reference signal CRS, the transmission power that the user equipment receives the base station transmission RS includes：It is described to use
Family equipment receives the transmission power for the aperiodic CRS that the base station is notified by high-level signaling；Or
When the RS is channel state information reference signals CSI-RS, the user equipment receives the base station and sends the RS
Transmission power include：The user equipment receives the CSI-RS that the base station is notified by triggering signaling or the first notice signaling
Transmission power；Or
When the RS is demodulated reference signal DMRS, the user equipment receives the transmission power that the base station sends the RS
Including：The user equipment receives the transmission power for the DMRS that the base station is notified by triggering signaling or the second notice signaling.
4. extension carrier path loss measurement method according to claim 1 or 2, it is characterised in that the user equipment
The path loss PL of extension carrier wave is calculated according to the receiving power of the RS and the transmission power of the RSExtension/Segment CarrierIn the following way：
PLExtension/Segment Carrier=referencesignalpower-RSRP
Wherein, referencesignalpower is the transmission power of the RS, and RSRP is the receiving power of the RS.
5. a kind of method for assisting user equipment to perform extension carrier path loss measurement, it is characterised in that including：
Base station sends touching for the receiving power of the reference signal RS for triggering user equipment measurement extension carrier wave to user equipment
Signaling, the RS is aperiodic RS；
The base station sends RS on the RS private resources of the extension carrier wave to the user equipment；
The base station notifies the transmission power of the RS for calculating the path loss for extending carrier wave to the user equipment.
6. the method according to claim 5 for assisting user equipment to perform extension carrier path loss measurement, its feature exists
In,
The triggering signaling is 1 bit bit configured informations；
Or, the triggering signaling includes the preset positional information for being used to send the fixed resource of the RS；
Or, the triggering signaling includes the configuration information of the RS, the configuration information of the RS is used to indicate to send the RS's
Resource location.
7. assist the method that user equipment performs extension carrier path loss measurement, its feature according to claim 5 or 6
It is,
When the RS is aperiodic public reference signal CRS, the base station notifies the transmission power of the RS to use to described
Family equipment includes：The base station is notified the transmission power of the aperiodic CRS to the user equipment by high-level signaling；Or
Person
When the RS is channel state information reference signals CSI-RS, the base station notifies the transmission power of the RS to institute
Stating user equipment includes：The base station is led to the transmission power of the CSI-RS by the triggering signaling or the first notice signaling
Know to the user equipment；Or
When the RS is demodulated reference signal DMRS, the base station notifies the transmission power of the RS to the user equipment
Including：The base station is notified the transmission power of the DMRS to the user by the triggering signaling or the second notice signaling
Equipment.
8. assist the method that user equipment performs extension carrier path loss measurement, its feature according to claim 5 or 6
It is, the RS private resources for extending carrier wave are on frequency domain specifically, bandwidth or the described special RS of the extension carrier wave
The special subcarriers of the RS of carrier wave are extended, the special subcarrier of bandwidth or the RS special RS is preset or included in configuration
Signaling is triggered in signaling included in described.
9. assist the method that user equipment performs extension carrier path loss measurement, its feature according to claim 5 or 6
It is, the RS private resources for extending carrier wave are on spatial domain specifically, at least one special RS of extension carrier wave day
Line end mouthful, at least one special RS antenna port is preset or included in configuration signal or included in the triggering letter
In order.
10. assisting the method that user equipment performs extension carrier path loss measurement according to claim 5 or 6, it is special
Levy and be, the RS private resources for extending carrier wave are in time domain specifically, sending the RS of the extension carrier wave at least one times, institute
It is preset or included in configuration signal or included in the triggering signaling to state the number of times for the RS for sending the extension carrier wave.
11. the method according to claim 10 for assisting user equipment to perform extension carrier path loss measurement, its feature
It is, when the number of times of the RS for sending the extension carrier wave is n times, N ＞ 1, when N is natural number, in the n times RS of the transmission
Adjacent R S interval be more than or equal to 1 millisecond of ms, the sub-frame offset of the RS is less than adjacent R S interval.
12. the method according to claim 10 for assisting user equipment to perform extension carrier path loss measurement, its feature
Be, when the number of times of the RS for sending the extension carrier wave is n times, N ＞ 1, when N is natural number, the subframe of the n times RS it
Between use frequency-hopping mode.
13. the method according to claim 10 for assisting user equipment to perform extension carrier path loss measurement, its feature
It is, when the number of times of the RS for sending the extension carrier wave is n times, N ＞ 1, when N is natural number, in the subframe of the n times RS
In, the different antenna port of different subframe correspondences, and the different antenna port is according to preset period of sub-frame circulation.
14. assisting the method that user equipment performs extension carrier path loss measurement according to claim 5 or 6, it is special
Levy and be, when the RS of the extension carrier wave is CSI-RS, the RS private resources of the extension carrier wave include a variety of CSI-RS's
Configuration.
15. assisting the method that user equipment performs extension carrier path loss measurement according to claim 5 or 6, it is special
Levy and be, the triggering signaling includes：Physical layer signaling, media access control layer control unit MAC CE, wireless heterogeneous networks
Signaling RRC.
16. the method according to claim 8 for assisting user equipment to perform extension carrier path loss measurement, its feature exists
In the configuration signal includes：Physical layer signaling, MAC CE, RRC.
17. a kind of user equipment, it is characterised in that including：
Signaling receiving unit is triggered, the triggering signaling for receiving base station transmission；
Receiving power measuring unit, for, in the reference signal RS private resources of extension carrier wave, being surveyed based on the triggering signaling
RS receiving power is measured, the RS is aperiodic RS；
Transmission power receiving unit, the transmission power of the RS is sent for receiving the base station；
Carrier path loss calculation unit is extended, for the receiving power according to the RS and the transmission power of the RS, is calculated
Extend the path loss of carrier wave.
18. user equipment according to claim 17, it is characterised in that
When the RS is aperiodic public reference signal CRS, the transmission power receiving unit, specifically for passing through high level letter
Order receives the transmission power for the aperiodic CRS that the base station is notified；Or
When the RS is channel state information reference signals CSI-RS, the transmission power receiving unit, specifically for passing through
Trigger signaling or the first notice signaling receives the transmission power for the CSI-RS that the base station is notified；Or
When the RS be demodulated reference signal DMRS when, the transmission power receiving unit, specifically for by trigger signaling or
Second notice signaling receives the transmission power for the DMRS that the base station is notified.
19. the user equipment according to claim 17 or 18, it is characterised in that the extension carrier path loss calculation list
Member extends the path loss PL of carrier wave specifically for calculating in the following wayExtension/Segment Carrier：
PLExtension/Segment Carrier=referencesignalpower-RSRP
Wherein, referencesignalpower is that transmission power receiving unit reception is obtained, and RSRP is the reception work(
Rate measuring unit measurement is obtained.
20. a kind of base station, it is characterised in that including：
Signaling transmitting element is triggered, the reference signal of carrier wave is extended for triggering user equipment measurement for being sent to user equipment
The triggering signaling of RS receiving power, the RS is aperiodic RS；
Reference signal transmitting element, for sending RS to the user equipment on the RS private resources of the extension carrier wave；
Transmission power notification unit, for by for calculate extend carrier wave path loss the RS transmission power notify to
The user equipment.
21. base station according to claim 20, it is characterised in that
The triggering signaling transmitting element is 1 bit bit configured informations specifically for the triggering signaling sent to user equipment；
Or, the triggering signaling transmitting element includes preset be used for specifically for the triggering signaling sent to user equipment
Send the positional information of the fixed resource of the RS；
Or, the triggering signaling transmitting element includes matching somebody with somebody for the RS specifically for the triggering signaling sent to user equipment
Confidence ceases, and the configuration information of the RS is used for the resource location for indicating to send the RS.
22. the base station according to claim 20 or 21, it is characterised in that
When the RS is aperiodic public reference signal CRS, the transmission power notification unit, specifically for passing through high level letter
Order notifies the transmission power of the aperiodic CRS to the user equipment；Or
When the RS is channel state information reference signals CSI-RS, the transmission power notification unit, specifically for passing through
The triggering signaling or the first notice signaling notify the transmission power of the CSI-RS to the user equipment；Or
When the RS is demodulated reference signal DMRS, the transmission power notification unit, specifically for being believed by the triggering
Order or the second notice signaling notify the transmission power of the DMRS to the user equipment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110196017.5A CN102883343B (en) | 2011-07-13 | 2011-07-13 | One kind extension carrier path loss measurement method and relevant device |
| PCT/CN2012/078523 WO2013007202A1 (en) | 2011-07-13 | 2012-07-12 | Method for measuring path loss of expanded carrier and related device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110196017.5A CN102883343B (en) | 2011-07-13 | 2011-07-13 | One kind extension carrier path loss measurement method and relevant device |
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| CN102883343B true CN102883343B (en) | 2017-08-29 |
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| US10560851B2 (en) * | 2017-01-13 | 2020-02-11 | Samsung Electronics Co., Ltd. | Method and apparatus for uplink beam management in next generation wireless systems |
| CN109120355B (en) * | 2017-06-26 | 2024-01-02 | 华为技术有限公司 | Method and device for determining path loss |
| EP4027710A4 (en) * | 2019-09-30 | 2022-09-28 | Huawei Technologies Co., Ltd. | Power adjustment method and apparatus |
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|---|---|---|---|---|
| EP1855391A1 (en) * | 2006-05-12 | 2007-11-14 | Samsung Electronics Co., Ltd. | Uplink (UL) power control apparatus and method in broadband wireless communication system |
| CN101263665A (en) * | 2005-09-14 | 2008-09-10 | 纳维尼网络公司 | Method for optimizing up-link transmission power for a wireless terminal |
| CN201639782U (en) * | 2009-12-30 | 2010-11-17 | 江西省电力公司 | User equipment and wireless communication system for optimizing wireless network resource allocation |
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| CN101577569B (en) * | 2008-05-05 | 2013-01-16 | 鼎桥通信技术有限公司 | Method and devices for power control |
| WO2011038548A1 (en) * | 2009-09-30 | 2011-04-07 | 上海贝尔股份有限公司 | Method and device for uplink power control in communication system based on carrier aggregation |
| CN102143505B (en) * | 2010-02-03 | 2013-10-02 | 华为技术有限公司 | Method, device and system for measuring carrier wave polymerization cell |
| CN102883341B (en) * | 2011-07-11 | 2015-05-27 | 华为技术有限公司 | Measuring method of channel information and relevant device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263665A (en) * | 2005-09-14 | 2008-09-10 | 纳维尼网络公司 | Method for optimizing up-link transmission power for a wireless terminal |
| EP1855391A1 (en) * | 2006-05-12 | 2007-11-14 | Samsung Electronics Co., Ltd. | Uplink (UL) power control apparatus and method in broadband wireless communication system |
| CN201639782U (en) * | 2009-12-30 | 2010-11-17 | 江西省电力公司 | User equipment and wireless communication system for optimizing wireless network resource allocation |
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