CN103391607B - The Poewr control method of measuring reference signals, device and system - Google Patents

The Poewr control method of measuring reference signals, device and system Download PDF

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CN103391607B
CN103391607B CN201210146279.5A CN201210146279A CN103391607B CN 103391607 B CN103391607 B CN 103391607B CN 201210146279 A CN201210146279 A CN 201210146279A CN 103391607 B CN103391607 B CN 103391607B
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power adjustment
adjustment value
power
user equipment
information
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CN103391607A (en
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李强
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2013/070265 priority patent/WO2013166864A1/en
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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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels

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

Abstract

The embodiment of the invention discloses the Poewr control method of a kind of SRS, device and system.The embodiment of the present invention adopts the power adjustment message comprising at least one power adjustment of subscriber equipment receiving network equipment and send, one group of power contorl parameters is selected in preset multiple power control parameter, then based on the indication information from network equipment, the current power adjusted value corresponding with one group of power contorl parameters of described selection is obtained at least one power adjustment described, and based on current power adjusted value determination actual power adjusted value, finally according to the transmitted power of one group of power contorl parameters adjustment SRS of actual power adjusted value and selection, the program can improve greatly at multipoint service technical network, the power control accuracy of the SRS especially under heterogeneous network and flexibility.

Description

Power control method, device and system for measuring reference signal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a power control method, apparatus, and system for a Sounding Reference Signal (SRS).
Background
In a Long Term Evolution (LTE) system, an uplink Sounding Reference Signal (SRS) is a signal sent by a User Equipment (UE) to an evolved node b (eNB), and is mainly used for uplink channel measurement, where a measurement result may be used for scheduling, modulation and coding selection, transmission time adjustment, and the like.
In a conventional network, a ue usually has only one serving base station, i.e. the ue corresponds to the same serving base station regardless of uplink or downlink, but if a multi-point service (CoMP) technique is used, especially in a heterogeneous network, a ue may correspond to multiple serving base stations, e.g. a serving micro base station exists in addition to a serving macro base station, and the micro base station includes low power nodes such as a pico base station (pico), a femto, and a home base station, so that the uplink serving base station and the downlink serving base station may be different. However, in the prior art, the transmission power of the SRS for uplink channel measurement sent by the user equipment and the transmission power of the SRS for downlink channel measurement sent by the user equipment are calculated based on the same serving base station, that is, the uplink and the downlink both use the same control procedure, so that the power control accuracy and flexibility of the SRS are not high in the multipoint service technology network, especially in the heterogeneous network.
Disclosure of Invention
Embodiments of the present invention provide a method, an apparatus, and a system for controlling SRS power, which can improve accuracy and flexibility of SRS power control in a multipoint service technology network, especially in a heterogeneous network.
A method of power control for an SRS, comprising:
receiving power adjustment information sent by network side equipment, wherein the power adjustment information comprises at least one power adjustment value of user equipment;
selecting a group of power control parameters from a plurality of groups of preset power control parameters;
acquiring a current power adjustment value corresponding to the group of power control parameters from the at least one power adjustment value based on indication information from network side equipment;
determining an actual power adjustment value based on the current power adjustment value;
and adjusting the sending power of the SRS according to the actual power adjustment value and a group of power control parameters.
A method of power control for an SRS, comprising:
determining a current power adjustment value corresponding to a group of power control parameters selected by the user equipment from at least one power adjustment value of the user equipment, wherein the group of power control parameters is selected by the user equipment from a plurality of preset groups of power control parameters; the current power adjustment value and the set of power control parameters are used for adjusting the sending power of the SRS of the user equipment;
the method includes providing power adjustment information including at least one power adjustment value to a user equipment, and indication information for indicating a current power adjustment value among the at least one power adjustment value.
A user equipment, comprising:
a receiving unit, configured to receive power adjustment information sent by a network side device, where the power adjustment information includes at least one power adjustment value of a user equipment;
the parameter selection unit is used for selecting a group of power control parameters from a plurality of groups of preset power control parameters;
an adjustment value selecting unit, configured to obtain, based on indication information from a network-side device, a current power adjustment value corresponding to the group of power control parameters from the at least one power adjustment value;
a determining unit for determining an actual power adjustment value based on the current power adjustment value;
and an adjusting unit, configured to adjust the sending power of the SRS according to the actual power adjustment value and the set of power control parameters.
A network-side device, comprising:
a determining unit, configured to determine, among at least one power adjustment value of a user equipment, a current power adjustment value corresponding to a group of power control parameters selected by the user equipment, where the group of power control parameters is selected by the user equipment from among preset groups of power control parameters; the current power adjustment value and the set of power control parameters are used for adjusting the sending power of the SRS of the user equipment;
a sending unit, configured to provide power adjustment information including at least one power adjustment value to a user equipment, and indication information indicating a current power adjustment value in the at least one power adjustment value.
A communication system comprises any user equipment and network side equipment provided by the embodiment of the invention.
The embodiment of the invention adopts the power adjustment information which is sent by a receiving network side device and comprises at least one power adjustment value of a user device, selects a group of power control parameters from a plurality of preset groups of power control parameters, then obtains the current power adjustment value corresponding to the selected group of power control parameters from the at least one power adjustment value based on the indication information from the network side device, determines the actual power adjustment value based on the current power adjustment value, and finally adjusts the sending power of the SRS according to the actual power adjustment value and the selected group of power control parameters. According to the scheme, different power control parameters can be selected according to different preset strategies, such as aiming at different target service base stations, or aiming at different control algorithms in the service base stations, and the like, and the indication information is used for indicating the user equipment to select the corresponding power adjustment value from multiple groups of power adjustment values to adjust the sending power of the SRS, so that compared with the prior art that the sending power of the SRS can be fixedly calculated aiming at one service base station, and the power adjustment value aiming at one power control process can be sent only, the power control precision and flexibility of the SRS in a multipoint service technology network, especially under a heterogeneous network, are greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a power control method for an SRS according to an embodiment of the present invention;
fig. 2 is a flowchart of a power control method for an SRS according to an embodiment of the present invention;
fig. 3a is an application scenario diagram of a power control method for an SRS according to an embodiment of the present invention;
fig. 3b is another flowchart of a power control method for SRS according to an embodiment of the present invention;
fig. 4 is a flowchart of a power control method for an SRS according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a user equipment provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a network-side device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to better explain the embodiment of the present invention, a method for calculating SRS transmission power will be briefly described below. The following were used:
before the user equipment transmits the SRS, the SRS transmission power is first determined, for example, the SRS transmission power P can be calculated according to the following formulaSRS(i)：
PSRS(i)=min{PCMAX(i),PSRS_OFFSET+10log10(MSRS)+PO_PUSCH(j)+α(j)·PL+f(i)}；
Wherein,where P isCMAX(i) Is the maximum transmit power, P, of the user equipmentSRS_OFFSET、PO_PUSCH(j) And α (j) are parameters from the higher layer configuration of the user equipment or the network side equipment, MSRSIs the bandwidth of SRS, PL is the path loss information (pathloss) measured by the ue, and f (i) is the adjustment value of closed loop power control (power control may be referred to as power control). The higher layer mentioned in this embodiment and the following embodiments may be specifically a Radio Resource Control (RRC) layer.
From PSRS(i)=min{PCMAX(i),PSRS_OFFSET+10log10(MSRS)+PO_PUSCH(j) + α (j) · PL + f (i) }, it can be seen that the network side device may directly control the size of the adjustment value (f) by transmitting downlink physical layer control signaling (DCI) on a Physical Downlink Control Channel (PDCCH), so as to control the SRS transmission power P of the user equipmentSRS(i) The size of (2). The adjustment value f (i) may be an adjustment value (i-K) directly issued by the network side device, or may be an accumulated value, that is, the adjustment value f (i) = f (i-1) + (i-K), where (i-K) is an adjustment value of the transmission power of the SRS, which is sent by the enodeb to the ue in the i-K subframe.
The embodiment of the invention provides a power control method, a device and a system of an SRS. The following are detailed below.
The first embodiment,
The embodiment will be described from the perspective of a user device, which may specifically be a mobile phone, a tablet computer, or a notebook computer.
A method of power control for an SRS, comprising: receiving power adjustment information sent by network side equipment, wherein the power adjustment information comprises at least one power adjustment value of user equipment; selecting a group of power control parameters from a plurality of groups of preset power control parameters; acquiring a current power adjustment value corresponding to the selected group of power control parameters from the at least one power adjustment value based on indication information from the network side equipment; determining an actual power adjustment value based on the current power adjustment value; and adjusting the transmission power of the measurement reference signal according to the determined actual power adjustment value and the selected group of power control parameters.
As shown in fig. 1, the specific process may be as follows:
101. and receiving power adjustment information sent by the network side equipment.
The power adjustment information may specifically include at least one power adjustment value of the ue, and may further include other information related to power adjustment. The power adjustment value is specifically provided by a network side device, such as a base station. In a specific implementation, the power adjustment information may only carry the power adjustment value provided by the target serving base station, or may also carry the power adjustment values provided by a plurality of serving base stations, and then indicate which power adjustment value should be used through the indication information of the network side device.
It should be noted that, the network-side device may specifically be a base station, such as a serving macro base station or a serving micro base station, and if the user equipment has multiple serving base stations, the network-side device may specifically be any one of the multiple serving base stations, such as a downlink serving base station in general, where information provided by other serving base stations, such as a power adjustment value, may be transmitted to the serving base station (i.e., a network-side device) through communication between the base stations, and is transmitted to the user equipment by the serving base station (i.e., the network-side device).
102. Selecting a group of power control parameters from a plurality of groups of preset power control parameters;
wherein, each set of power control parameters means corresponding to a power control procedure, and each set of power control parameters may include the maximum transmission power (i.e. P) of the ueCMAX(i)）、Parameters for higher layer configuration (such as P)SRS_OFFSET、PO_PUSCH(j) And α (j)), bandwidth of the SRS (i.e., M)SRS) And path loss information (pathloss) measured by the user equipment.
Specifically, the power control parameter may be selected according to a preset policy when selecting the power control parameter, where the preset policy may be set according to requirements of actual applications, for example, the preset policy may be selected by the user equipment according to a target serving base station, or may also be selected according to an instruction of the network equipment side, and so on. For example, the following may be specifically mentioned:
(1) selecting by the user equipment according to the target serving base station as follows:
and determining a target service base station, and selecting a group of power control parameters from preset groups of power control parameters according to the determined target service base station, namely acquiring a group of power control parameters corresponding to the target service base station from the preset groups of power control parameters.
The service base station of the current service can be known by receiving the upper layer signaling configuration of the network side device and then using the upper layer signaling configuration, or other notification messages sent by the network side device can be received, and which service base station the target service base station of the current service is known according to the notification messages, and so on. For example, if the serving base station for the uplink of the ue is base station a, and the serving base station for the downlink of the ue is base station B, if the downlink channel of the ue needs to be measured, the target serving base station for the SRS sent by the ue is base station B, otherwise, if the uplink channel of the ue needs to be measured, the target serving base station for the SRS sent by the ue is base station a, and so on.
In addition, multiple sets of power control parameters may be preset for the SRS, where each set of power control parameters corresponds to one serving base station or one class of serving base stations. Thus, after the target serving base station is determined, a corresponding set of power control parameters can be found according to the determined target serving base station.
(2) Selecting according to the indication of the network side equipment; the following were used:
for example, it may be specifically indicated which set of power control parameters should be selected by carrying information in a downlink control signaling (DCI) sent by a network side device.
It should be noted that, the step 102 and the step 101 may not be executed sequentially.
103. Based on the indication information from the network side device, obtaining a current power adjustment value corresponding to the set of power control parameters selected in step 102 from at least one power adjustment value in the power adjustment information received in step 101;
the indication information may be obtained in various ways, such as through higher layer control signaling configuration, etc., or, if the power adjustment information is transmitted through DCI in step 101, the indication information may also be obtained through DCI at this time. For example, the indication information may be obtained in any one of the following manners:
(1) indicated by the SRS trigger information bit in the DCI.
That is, an SRS trigger information bit is set in the DCI, and the SRS trigger information bit carries indication information for indicating which power adjustment value the user equipment should select, so that after the user equipment receives the DCI, the indication information can be acquired through the SRS trigger information bit in the DCI, and thus a current power adjustment value corresponding to the group of power control parameters selected in step 102 is acquired in at least one power adjustment value according to the indication information. For example, if the DCI has 1-bit SRS trigger information bit, and the control procedure corresponding to the first group of power control parameters is referred to as "power control procedure 1", and the control procedure corresponding to the second group of power control parameters is referred to as "power control procedure 2", then if the trigger information bit is set to '0', the power adjustment value carried by the DCI will be used in the power control procedure 1, and if the trigger information bit is set to '1', the power adjustment value carried by the information bit used for transmitting the power adjustment information will be used in the power control procedure 2.
(2) Indicated by a radio network temporary identity (PC-RNTI), a PowerControl-radio network temporary identity identifier.
Similar to the mode (1), the mode (2) is also to carry the indication information in the DCI, and different from the mode (1), the mode (2) does not directly indicate, but scrambles the DCI by using the PC-RNTI, and then the user equipment determines the current PC-RNTI by descrambling the DCI, thereby determining the indication information indicated by the current PC-RNTI. That is, before the step "obtaining, based on the indication information from the network side device, the current power adjustment value corresponding to the selected group of power control parameters from the at least one power adjustment value", the SRS power control method may further include:
determining a current PC-RNTI by descrambling the DCI to determine the indication information indicated by the current PC-RNTI.
For example, if a control flow corresponding to a first group of power control parameters is referred to as "power control flow 1", a control flow corresponding to a second group of power control parameters is referred to as "power control flow 2", and a PC-RNTI corresponding to the power control flow 1 is "XXXX", and a PC-RNTI corresponding to the power control flow 2 is "YYYY", then after receiving DCI, user equipment descrambles the DCI by respectively using "XXXX" and "yyyyy", if "XXXX" can descramble successfully, it indicates that a power adjustment value carried in the DCI is applicable to the power control flow 1, and if "yyyyy" can descramble successfully, it indicates that a power adjustment value carried in the DCI is applicable to the power control flow 2, and so on.
(3) Indicated by a higher layer signaling configuration.
That is, before receiving the power adjustment information sent by the network side device (step 101), the SRS power control method may further include: and receiving a high-level signaling sent by the network side equipment, wherein the high-level signaling carries indication information.
104. Determining an actual power adjustment value based on the current power adjustment value; for example, the following may be specifically mentioned:
(1) if the obtaining mode of the actual power adjusting value is not specified, the current power adjusting value is directly used as the actual power adjusting value, namely fad(i) = (i-K), wherein fad(i) Representing the actual power adjustment value and (i-K) representing the current power adjustment value.
(2) If an obtaining manner of the actual power adjustment value is specified, for example, the obtaining manner of the actual power adjustment value is indicated as a direct indication manner, or the obtaining manner of the actual power adjustment value is indicated as an accumulation manner, etc., then at this time, after the current power adjustment value is determined, the actual power adjustment value needs to be further determined according to the obtaining manner of the actual power adjustment value, as follows:
if the obtaining mode of the actual power adjustment value is known to be a direct indication mode through the indication of the high-level signaling, the current power adjustment value is determined as the actual power adjustment value, namely fad(i) = (i-K), wherein fad(i) Representing the actual power adjustment value and (i-K) representing the current power adjustment value. Or,
if the obtaining mode of the actual power adjustment value is the accumulation mode through the indication of the high-level signaling, taking the sum of the last actual power adjustment value and the current power adjustment value as the actual power adjustment value, namely fad(i)=fad(i-1) + (i-K), wherein fad(i) Representing the actual power adjustment value, (i-K) representing the current power adjustment value, fad(i-1) represents the last actual power adjustment value. Or,
in addition, the ue may also receive multiple power adjustment values for the ue before sending the SRS, and then another way may be used to obtain the actual power adjustment value. Namely as follows:
if the acquisition mode of the actual power adjustment value is obtained through the indication of the high-level signaling, the acquisition mode is a direct indication mode; then when there are a plurality of the obtained current power adjustment values, the last received one of the plurality of current power adjustment values is selected as the actual power adjustment value. Or,
if the acquisition mode of the actual power adjustment value is acquired through the indication of the high-level signaling, the acquisition mode is an accumulation mode; the sum of the plurality of current power adjustment values is taken as the actual power adjustment value when the acquired current power adjustment value has a plurality.
It should be noted that, since there is a time limit on the validity of the power adjustment information before the SRS is transmitted, for example, the SRS is transmitted in the nth subframe, only the power adjustment information received before the nth-k subframe is valid, where the value of k may be set according to the requirement of the actual application. Therefore, it should be understood that the "current power adjustment information" mentioned in the embodiments of the present invention refers to valid power adjustment information; for example, if the SRS is transmitted in the nth subframe and the system configuration is valid for the power adjustment information received before the nth-k subframe, the "multiple current power adjustment values" in the previous example means that, before the k subframe before the SRS is transmitted (i.e., before the nth-k subframe), if there are multiple current power adjustment information, the last current power adjustment information received before the nth-k subframe is used as the actual power adjustment value, and so on.
It should be further noted that, the high layer signaling configuration may be configured by the network side device by sending the high layer signaling before the user equipment determines the actual power adjustment value, and for the method of configuring the high layer signaling, reference may be specifically made to the prior art, and details are not described herein again.
105. And adjusting the sending power of the SRS according to the actual power adjustment value determined in the step 102 and the set of power control parameters acquired in the step 103.
For example, if the SRS transmission powerBy PSRS(i) To show how the adjustment is specifically made, the following formula can be used to calculate the transmission power P of the SRSSRS(i)：
PSRS(i)=min{PCMAX(i),PSRS_OFFSET+10log10(MSRS)+PO_PUSCH(j)+α(j)·PL+f(i)}；
Wherein, here PCMAX(i) Is the maximum transmit power, P, of the user equipmentSRS_OFFSET、PO_PUSCH(j) And α (j) is a higher configured power control parameter, MSRSIs the bandwidth of SRS, PL is the path loss information (pathloss) measured by the ue, and f (i) is the closed loop power control adjustment value, which is the "actual power adjustment value" in the embodiment of the present invention.
As can be seen from the above, in this embodiment, power adjustment information including at least one power adjustment value of the ue sent by the network side device is received, a set of power control parameters is selected from multiple preset sets of power control parameters, then, based on indication information from the network side device, a current power adjustment value corresponding to the selected set of power control parameters is obtained from the at least one power adjustment value, an actual power adjustment value is determined based on the current power adjustment value, and finally, the SRS transmission power is adjusted according to the actual power adjustment value and the selected set of power control parameters. According to the scheme, different power control parameters can be selected according to different preset strategies, such as aiming at different target service base stations, or aiming at different control algorithms in the service base stations, and the like, and the indication information is used for indicating the user equipment to select the corresponding power adjustment value from multiple groups of power adjustment values to adjust the sending power of the SRS, so that compared with the prior art that the sending power of the SRS can be fixedly calculated aiming at one service base station, and the power adjustment value aiming at one power control process can be sent only, the power control precision and flexibility of the SRS in a multipoint service technology network, especially under a heterogeneous network, are greatly improved.
Example II,
According to the method described in the first embodiment, the power adjustment information may be specifically transmitted through a Media Access Control (MAC) signaling, or may also be transmitted on a Physical Downlink Control Channel (PDCCH) by using a downlink control signaling (DCI), that is, step 101 in the first embodiment may specifically be as follows:
1. receiving power adjustment information transmitted by network side equipment through MAC signaling; or,
2. and receiving power adjustment information transmitted by the network side equipment through the DCI. For example, any of the following methods may be specifically adopted:
(1) for convenience of description, the DCI transmitted by the network side device is referred to herein as a first DCI (i.e., a first downlink control signaling), where the first DCI may include one information bit for transmitting power adjustment information, where the information bit is divided into at least two sub-information bits, and each sub-information bit carries one power adjustment value.
For example, taking an information bit divided into at least two sub-information bits as an example, one of the sub-information bits may carry a power adjustment value provided by the serving base station a, and the other sub-information bit may carry a power adjustment value provided by the serving base station B.
(2) For convenience of description, the DCI transmitted by the network side device is referred to herein as a second DCI (i.e., a second downlink control signaling), where the second DCI may include at least two information bits for transmitting power adjustment information, where each information bit carries a power adjustment value.
For example, taking the example of including two information bits, one of the information bits may carry the power adjustment value provided by the serving base station a, and the other information bit may carry the power adjustment value provided by the serving base station B.
(3) For convenience of description, the DCI transmitted by the network side device is referred to herein as a third DCI (i.e., a third downlink control signaling), and the third DCI may include an information bit for transmitting power adjustment information, where the information bit carries a power adjustment value.
For example, if the target serving base station is serving base station a, the information bit is made to carry the power adjustment value provided by serving base station a, if the target serving base station is serving base station B, the information bit is made to carry the power adjustment value provided by serving base station B, and so on.
After receiving DCI (such as the first DCI, the second DCI, or the third DCI) sent by the network side device, which of at least one power adjustment value carried in the DCI can be used as the current power adjustment value may be known based on indication information provided by the network side device, where the description on the indication information may specifically refer to embodiment one, and is not described herein again.
In addition, in order to improve transmission efficiency, power adjustment information for a plurality of user equipments may be carried in DCI, and then the user equipments are informed of the specific position of their corresponding power adjustment information in the DCI through higher layer signaling configuration. For example, the DCI may carry power adjustment information for the user equipment a, power adjustment information for the user equipment B, and power adjustment information for the user equipment C, and so on, and after receiving the DCI, the user equipment a may find the adjustment information corresponding to the user equipment a from the DCI according to the high-level signaling configuration. That is, if the DCI includes power adjustment information for a plurality of user equipments, the method may further include:
receiving a high-level signaling which is sent by the network side equipment and carries the corresponding relation between the at least one power adjustment value and the user equipment;
at this time, before the "obtaining, based on the indication information from the network side device, a current power adjustment value corresponding to the selected set of power control parameters from the at least one power adjustment value (i.e. step 103)", the method may further include:
and extracting the at least one power adjustment value for the user equipment in the power adjustment information based on the corresponding relation between the at least one power adjustment value and the user equipment.
In addition, in order to improve the security of signaling transmission, when the network side device sends DCI (such as the first DCI, the second DCI, or the third DCI), the network side device may further encrypt the DCI, and then the user device scrambles the DCI according to a decryption method negotiated by both sides (i.e., the user device and the network side device) to obtain the DCI. For example, the network side device may configure an Identifier (ID, Identifier) such as a PC-RNTI for the user equipment, when the network side device needs to send DCI carrying a power adjustment value to the user equipment, the network side device may scramble the received DCI by using the PC-RNTI, and after receiving the encrypted DCI, the user equipment descrambles the encrypted DCI according to the known PC-RNTI, and may obtain the power adjustment value therein. Optionally, different PC-RNTIs may also be configured for different groups of power control parameters, and the user equipment descrambles through the different PC-RNTIs to obtain power adjustment values corresponding to the different groups of power control parameters, where at this time, the scrambling and descrambling operation is equivalent to indication information used for indicating which power adjustment value to select, and reference may be specifically made to the indication manner of the indication information in the first embodiment, and details are not described here again. Of course, the same PC-RNTI may be configured for different sets of power control parameters, and will not be described herein.
Since the existing DCI has different formats (dciformates), there may be one information bit in some formats for transmitting the SRS power adjustment value, such as dciformate 0, dciformate 4, dciformate 3 and dciformate 3 a. Therefore, a plurality of power adjustment values may be carried by dividing "information bits for transmitting power adjustment information" or adding new "information bits for transmitting power adjustment information" on the basis of the existing DCI.
For example, in the prior art, 2 bits (bits) in a DCI are used to carry a power adjustment value for an existing power control procedure (for example, a power adjustment value provided by a downlink serving base station a), in the embodiment of the present invention, the 2 bits may be split into two parts (that is, into two sub information bits), where the first 1bit is used to carry the power adjustment value for the existing power control procedure, and the second 1bit may be used to carry the power adjustment value for a newly increased power control procedure (for example, a power adjustment value provided by an uplink serving base station B).
For another example, in the prior art, the original size of one DCI is 20 bits, and then after the higher layer signaling configuration, the size of the DCI may be increased to 22 bits, where the newly added 2 bits are used to carry a power adjustment value for the newly added power.
Alternatively, the existing DCI format may be used, and only before sending the DCI, the network side device may notify the user equipment through high-layer signaling configuration that the power adjustment value carried by the current DCI is the power adjustment value provided by which serving base station.
It should be noted that, in order to reduce the amount of information, in the various transmission manners of the power adjustment information, the transmitted power adjustment value may not be a specific value, but is an index value, and then the ue searches the power adjustment value mapping table according to the received index value to obtain the specific value of the corresponding power adjustment value.
In the above, only one more power adjustment value is carried in the DCI (i.e. a total of two power adjustment values are carried), it should be understood that the carried power adjustment values may be multiple, for example, one "information bit for transmitting power adjustment information" may be divided into 3 parts, or 4 parts, or even 5 parts, etc., each part is a sub information bit, and one sub information bit carries one power adjustment value; for another example, two information bits or 3 information bits may be added to the DCI, and each information bit may carry a power adjustment value, and so on, which is not described herein again. In addition, the DCI may also carry an SRS trigger information bit in addition to an information bit for transmitting power adjustment information, which is used to indicate which power control value is selected from at least one power adjustment value, for details, see embodiment one, and are not described herein again. For example, if the DCI has 1bit of SRS trigger information bit and 2 bits of information bit for transmitting power adjustment information, and the control procedure corresponding to the first group of power control parameters is referred to as "power control procedure 1", and the control procedure corresponding to the second group of power control parameters is referred to as "power control procedure 2", then if the trigger information bit is set to "0", the power adjustment value carried by the DCI will be used in the power control procedure 1, and if the trigger information bit is set to "1", the power adjustment value carried by the information bit for transmitting power adjustment information will be used in the power control procedure 2.
In addition, it should be noted that, if DCI is used to transmit the power control information, when receiving DCI sent by the network side device, the user equipment may also determine that the DCI is suitable for the power control method provided in the embodiment of the present invention, if the DCI is suitable for the power control method, step 101 is executed, otherwise, the method in the prior art is used to perform power control on the SRS. For example, the determination may be made by any one of the following methods:
1. and judging whether the DCIformat has SRS triggering capability, if so, indicating that the DCIformat can be applied to the power control method provided by the embodiment of the invention, and if not, performing SRS power control by adopting the method in the prior art. For example, DCIformat1a, DCIformat2b, DCIformat2c, DCIformat0, or DCIformat4 have SRS triggering capability, and thus all of them can be applied to the power control method provided in the embodiments of the present invention.
2. Judging whether the DCIformat simultaneously meets the following conditions: (1) the DCI format is used for downlink data scheduling; (2) the DCI format possesses SRS triggering capability. If the two conditions can be satisfied simultaneously, it indicates that the method can be applied to the power control method provided by the embodiment of the present invention, and if the two conditions cannot be satisfied simultaneously, the method of the prior art is used to perform power control on the SRS. For example, DCIformat1a, DCIformat2b, or DCIformat2c may satisfy the above two conditions, and thus all of them may be applied to the power control method provided in the embodiments of the present invention.
3. Judging whether the DCIformat simultaneously meets the following conditions: (1) the DCI format is used for downlink data scheduling; (2) the DCI format has SRS triggering capability; (3) the SRS is triggered by the SRS trigger information bit of the DCI. If the three conditions can be satisfied simultaneously, it indicates that the method can be applied to the power control method provided by the embodiment of the present invention, and if the three conditions cannot be satisfied simultaneously, the method of the prior art is adopted to perform power control on the SRS. For example, DCIformat1a, DCIformat2b, or DCIformat2c may satisfy the above three conditions, and when DCIformat1a/2b/2c is issued to the ue and the ue performs SRS triggering according to the SRS triggering information bit therein, the method may be applied to the power control method provided in the embodiment of the present invention.
4. Judging whether the DCIformat simultaneously meets the following conditions: (1) the DCI format is used for uplink data scheduling; (2) the DCI format possesses SRS triggering capability. If the two conditions can be satisfied simultaneously, it indicates that the method can be applied to the power control method provided by the embodiment of the present invention, and if the two conditions cannot be satisfied simultaneously, the method of the prior art is used to perform power control on the SRS. For example, DCIformat0 or DCIformat4 may satisfy the above two conditions, and thus both may be applicable to the power control method provided in the embodiments of the present invention.
5. Judging that the DCIformat simultaneously meets the following conditions: (1) the DCI format is used for uplink data scheduling; (2) the DCI format has SRS triggering capability; (3) the SRS is triggered by the SRS trigger information bit of the DCI. If the three conditions can be satisfied simultaneously, it indicates that the method can be applied to the power control method provided by the embodiment of the present invention, and if the three conditions cannot be satisfied simultaneously, the method of the prior art is adopted to perform power control on the SRS. For example, the power control method provided by the embodiment of the present invention can be applied to both DCIformat0 and DCIformat4, since the three conditions can be satisfied by performing SRS triggering.
6. And judging whether the DCIformat is used for group power control adjustment, if so, indicating that the DCIformat can be applied to the power control method provided by the embodiment of the invention, and if not, performing SRS power control by adopting the method in the prior art. For example, DCIformat3 or DCIformat3a may be used for group power control adjustment, and thus all of them may be applied to the power control method provided in the embodiments of the present invention.
As can be seen from the above, the embodiments of the present invention provide multiple ways to receive the power adjustment information sent by the network side device on the basis of the first embodiment, so that the effective effect described in the first embodiment can be achieved, and besides, the flexibility and selectivity of implementation of the scheme are further improved.
Example III,
In this embodiment, the description will be made from the perspective of a network side device, and the network side device may specifically be a base station, such as a serving macro base station or a serving micro base station.
A power control method for measuring a reference signal, as shown in fig. 2, may specifically include the following steps:
201. a current power adjustment value corresponding to a set of power control parameters selected by the user equipment is determined among the at least one power adjustment value of the user equipment.
Wherein, the "one group of power control parameters selected by the user equipment" is selected by the user equipment from a plurality of preset groups of power control parameters; the current power adjustment value and the "selected set of power control parameters" are used for adjusting the transmission power of the sounding reference signal of the user equipment; for details, reference may be made to the foregoing embodiments, which are not described herein again.
202. The method includes providing power adjustment information including at least one power adjustment value to a user equipment, and indication information for indicating a current power adjustment value among the at least one power adjustment value.
For example, the power adjustment information may be specifically sent to the user equipment through MAC signaling; alternatively, the power adjustment information may also be sent to the user equipment through DCI, where a manner of sending the power adjustment information through DCI may specifically refer to embodiment two, and is not described herein again.
The indication information may be provided to the user equipment in various ways, such as by a higher layer control signaling configuration, or the indication information may be transmitted to the user equipment through DCI if the power adjustment information is transmitted through DCI. For example, the indication information may be obtained in any one of the following manners:
(1) the indication is performed through the SRS trigger information bit in the DCI, see embodiment one, which is not described herein again.
(2) Indicated by PC-RNTI;
at this time, before transmitting the power adjustment information to the user equipment through the DCI, the method may further include:
and scrambling the downlink control signaling by using the PC-RNTI, so that the user equipment determines the current PC-RNTI by descrambling the DCI and further determines the indication information indicated by the current PC-RNTI.
Referring to the first embodiment, the description is omitted here.
(3) The indication is performed through higher layer signaling configuration, see embodiment one, and is not described herein again.
In addition, in order to improve transmission efficiency, power adjustment information for a plurality of user equipments may be carried in DCI, and then the user equipments are informed of the specific position of their corresponding power adjustment information in the DCI through higher layer signaling configuration. That is, before the step "providing the power adjustment information including at least one power adjustment value to the user equipment (i.e., step 202)" if the power adjustment information further includes at least one other power adjustment value of other user equipment, the power control method for SRS may further include:
and sending a high-level signaling to the user equipment, wherein the high-level signaling carries the corresponding relation between the at least one power adjustment value and the user equipment, so that the user equipment extracts the at least one power adjustment value for the user equipment in the power adjustment information according to the corresponding relation based on the at least one power adjustment value and the user equipment.
As can be seen from the above, in the present embodiment, a current power adjustment value corresponding to a set of power control parameters selected by the user equipment is determined in at least one power adjustment value of the user equipment, and then power adjustment information including the at least one power adjustment value and indication information for indicating the current power adjustment value in the at least one power adjustment value are provided to the user equipment, so that the user equipment can select a corresponding power adjustment value in the plurality of sets of power adjustment values to adjust the transmission power of the SRS according to different power control parameters, thereby greatly improving the power control accuracy and flexibility of the SRS in the multipoint service technology network, especially in the heterogeneous network.
Example four,
The method according to the previous embodiment will be illustrated in detail by way of example.
As shown in fig. 3a, the power control apparatus provided in the embodiment of the present invention is integrated in the user equipment a, and the user equipment a has two serving base stations: the base station comprises a macro base station B and a micro base station C, wherein the macro base station B is a downlink service base station of the user equipment A, and the micro base station C is an uplink service base station of the user equipment A.
First, two sets of power control parameters may be preset for the SRS, one set of power control parameters corresponding to the macro base station B, and the other set of power control parameters corresponding to the micro base station C. Secondly, the micro base station C needs to communicate with the macro base station B, the power adjustment value provided by the micro base station C is sent to the macro base station B, and the macro base station B provides the power adjustment value for the user equipment A. As shown in fig. 3b, the flow of the SRS power control method may specifically be as follows:
301. and the macro base station B transmits power adjustment information to the user equipment A through the MAC signaling, wherein the power adjustment information comprises a power adjustment value 1 and a power adjustment value 2, the power adjustment value 1 is a power adjustment value provided by the macro base station B, and the power adjustment value 2 is a power adjustment value provided by the micro base station C. The power adjustment value 1 is located at the first 1bit in the power adjustment information, and the power adjustment value 2 is located at the last 1bit in the power adjustment information.
It should be noted that the power adjustment value 2 may be transmitted to the macro base station B through communication between the micro base station C and the macro base station B, which may specifically refer to the prior art and is not described herein again.
302. The user equipment A determines a target serving base station for sending the SRS, and selects a corresponding group of power control parameters from two preset groups of power control parameters according to the determined target serving base station.
For example, in this embodiment, if a downlink channel needs to be measured, the target serving base station is the macro base station B, and if an uplink channel needs to be measured, the target serving base station is the micro base station C.
If the determined target serving base station is the macro base station B, at this time, the user equipment A selects a group of power control parameters corresponding to the macro base station B.
Wherein the set of power control parameters may include a maximum transmit power P of the user equipmentCMAX(i) Higher layer configured parameter PSRS_OFFSET、PO_PUSCH(j) And α (j), SBandwidth M of RSSRSAnd path loss information PL measured by the user equipment a.
303. The user equipment a obtains the current power adjustment value corresponding to the group of power control parameters selected in step 302 from the power adjustment information according to the high-level signaling configuration.
The high-level signaling configuration carries indication information for indicating the position of the current power adjustment value in the power adjustment information, and in addition, the high-level signaling configuration also indicates an acquisition mode of an actual power adjustment value, and the high-level signaling configuration can be specifically configured by a macro base station B by sending a high-level signaling to a user equipment a.
For example, if the downlink channel needs to be measured (that is, the target serving base station is the macro base station B), at this time, the user equipment a may know that the current power adjustment value is specifically located on the first 1bit in the power adjustment information according to the high-level signaling configuration, and then extract the current power adjustment value from the first 1bit in the power adjustment information, that is, extract the power adjustment value 1.
Of course, for carrying convenience and saving information amount, the current power adjustment value may not be a specific value but an index value, and then the user equipment a obtains the specific value of the power adjustment value by looking up the power adjustment value mapping table according to the index value. The mapping table of the power adjustment value may specifically refer to table one.
Table one:
power control adjustment value Accumulation modeδ[dB] Direct indication δ [ dB ]]
00 -1 -4
01 0 -1
10 1 1
11 3 4
…… …… ……
It should be noted that the power adjustment value mapping table shown in table one is only one of the patterns, and it should be understood that the power adjustment value mapping table may also exist in other patterns, which are not described herein again.
In addition, it should be further noted that, in addition to using the high-level signaling to carry the indication information, other manners may be used to carry the indication information, which is described in the foregoing embodiments and is not described herein again.
304. The user equipment A determines the obtaining mode of the actual power adjusting value according to the high-level signaling configuration, and if the obtaining mode of the actual power adjusting value is a direct indication mode, the current power adjusting value is directly used as the actual power adjusting value, namely fad(i)=(i-K); if the actual power adjustment value is obtained in an accumulation mode, the last actual power adjustment value is obtained, and the sum of the last actual power adjustment value and the current power adjustment value is used as the actual power adjustment value, that is, fad(i)=fad(i-1) + (i-K). Wherein f isad(i) Representing the actual power adjustment value, (i-K) representing the current power adjustment value, fad(i-1) represents the last actual power adjustment value.
For example, if the determined index value of the current power adjustment value is "11" in step 303, it can be known from the first lookup table that the specific value of the current power adjustment value corresponding to the direct indication mode is "4", the specific value of the current power adjustment value corresponding to the accumulation mode is "3", and if the acquisition mode of the actual power adjustment value is determined to be the direct indication mode according to the high-level signaling configuration, then the actual power adjustment value is obtained according to fad(i) The actual power adjustment value f can be known as (i-K)ad(i) Is "4"; if the obtaining mode of the actual power adjusting value is determined to be the accumulation mode according to the high-level signaling configuration and the last actual power adjusting value is '-1', then according to fad(i)=fad(i-1) + (i-K) shows the actual power adjustment value fad(i) Is "2".
305. The user equipment a calculates the SRS transmission power according to the actual power adjustment value obtained in step 304 and the set of power control parameters obtained in step 302, as follows:
PSRS(i)=min{PCMAX(i),PSRS_OFFSET+10log10(MSRS)+PO_PUSCH(j)+α(j)·PL+fad(i)}；
wherein, PSRS(i) Indicates the transmission power of SRS, PCMAX(i) Is the maximum transmit power, P, of the user equipmentSRS_OFFSET、PO_PUSCH(j) And α (j) are parameters for higher layer configuration, MSRSIs the bandwidth of the SRS, and PL is the path loss information measured by the user equipment.
306. And transmitting the SRS to the target serving base station according to the SRS transmission power obtained in the step 305, for example, if the target serving base station is the macro base station B, transmitting the SRS to the macro base station B according to the SRS transmission power obtained in the step 305.
It should be noted that, in this embodiment, the power control parameters are mainly selected by the ue according to the target serving base station for example, and it should be understood that which set of power control parameters should be selected may also be directly indicated by the base station. In addition, in this embodiment, only the power adjustment information is transmitted through MAC signaling as an example for description, it should be understood that the power adjustment information may also be transmitted through DCI signaling, where a method for carrying the power adjustment information through DCI signaling may specifically refer to embodiment two, and is not described herein again.
As can be seen from the above, the macro base station B according to the embodiment of the present invention may send power adjustment information including two power adjustment values of the user equipment a to the user equipment a through the MAC signaling, determine the target serving base station by the user equipment a, obtain a corresponding set of power control parameters from preset sets of power control parameters according to the target serving base station, then instruct the user equipment to select the current power adjustment value by carrying indication information in the high-level signaling by the macro base station B, further determine the actual power adjustment value, and finally calculate the SRS transmission power according to the actual power adjustment value and the obtained set of power control parameters. Because the scheme can adopt different power control parameters and actual power adjustment values to calculate the SRS transmission power aiming at different target service base stations, compared with the prior art that the SRS transmission power can only be fixedly calculated aiming at one service base station and the power adjustment value aiming at one power control process can only be transmitted, the power control precision and flexibility of the SRS in the heterogeneous network are greatly improved.
Example V,
Before sending the SRS, the ue may also receive a plurality of power adjustment values for the SRS, and therefore, in addition to the method for calculating the actual power adjustment value provided in the fourth embodiment, another calculation method may be adopted, which will be described in the following.
In this embodiment, the application scenario in fig. 3a is still taken as an example for explanation. Unlike the fourth embodiment, in the present embodiment, the power control information is not transmitted through MAC signaling, but is transmitted through DCI signaling.
First, two sets of power control parameters may be preset for the SRS, one set of power control parameters corresponding to the macro base station B, and the other set of power control parameters corresponding to the micro base station C. Secondly, the micro base station C needs to communicate with the macro base station B, the power adjustment value provided by the micro base station C is sent to the macro base station B, and the macro base station B provides the power adjustment value for the user equipment A. As shown in fig. 4, the flow of the SRS power control method may specifically be as follows:
401. the macro base station B transmits power adjustment information to the user equipment A through the DCI, wherein the power adjustment information comprises a power adjustment value 1 and a power adjustment value 2, the power adjustment value 1 is a power adjustment value provided by the macro base station B, and the power adjustment value 2 is a power adjustment value provided by the micro base station C.
In this embodiment, the DCI includes two information bits for transmitting the power adjustment information, where a first information bit carries a power adjustment value 1 and a second information bit carries a power adjustment value 2.
It should be noted that the power adjustment value 2 may be transmitted to the macro base station B through communication between the micro base station C and the macro base station B, which may specifically refer to the prior art and is not described herein again.
402. The user equipment A determines a target serving base station for sending the SRS, and selects a corresponding group of power control parameters from two preset groups of power control parameters according to the determined target serving base station.
For example, in this embodiment, if a downlink channel needs to be measured, the target serving base station is the macro base station B, and if an uplink channel needs to be measured, the target serving base station is the micro base station C.
If the determined target serving base station is the macro base station B, at this time, the user equipment A selects a group of power control parameters corresponding to the macro base station B.
Wherein the set of power control parameters may include a maximum transmit power P of the user equipmentCMAX(i) Higher layer configured parameter PSRS_OFFSET、PO_PUSCH(j) And α (j), bandwidth M of SRSSRSAnd path loss information PL measured by the user equipment a.
403. The user equipment a obtains the current power adjustment value corresponding to the group of power control parameters selected in step 402 from the power adjustment information according to the high-level signaling configuration.
The high-level signaling configuration carries indication information for indicating the position of the current power adjustment value in the power adjustment information, and in addition, the high-level signaling configuration also indicates an acquisition mode of an actual power adjustment value, and the high-level signaling configuration can be specifically configured by a macro base station B by sending a high-level signaling to a user equipment a.
For example, if the downlink channel needs to be measured (that is, the target serving base station is the macro base station B), at this time, the user equipment a may learn, according to the high layer signaling configuration, that the current power adjustment value corresponding to the group of power control parameters selected in step 402 is specifically located on the first "information bit for transmitting power adjustment information" in the DCI, and then extract the current power adjustment value from the first "information bit for transmitting power adjustment information" in the DCI, that is, extract the power adjustment value 1.
Of course, for carrying convenience and saving information amount, the current power adjustment value may not be a specific value but an index value, and then the user equipment a obtains the specific value of the power adjustment value by looking up the power adjustment value mapping table according to the index value. The mapping table of the power adjustment value may specifically refer to table one.
In addition, it should be further noted that, in addition to using the high-level signaling to carry the indication information, other manners may be used to carry the indication information, which is described in the foregoing embodiments and is not described herein again.
404. The user equipment A determines an acquisition mode of an actual power adjustment value according to high-level signaling configuration, and if the acquisition mode of the actual power adjustment value is a direct indication mode and a plurality of current power adjustment values are acquired before the user equipment A sends the SRS, one power adjustment value which is received last is selected from the plurality of current power adjustment values to serve as the actual power adjustment value; if the actual power adjustment value is obtained in an accumulation manner and there are a plurality of current power adjustment values obtained before the SRS is transmitted, the sum of the plurality of current power adjustment values is used as the actual power adjustment value.
For example, if the determined index values of the current power adjustment value are "00", "01", "10", and "11" in sequence in step 403, the specific numerical values of the current power adjustment value corresponding to the direct indication mode are "-4", "1", and "4" in sequence, the specific numerical values of the current power adjustment value corresponding to the accumulation mode are "-1", "0", "1", and "3" in sequence, and if the acquisition mode of the actual power adjustment value is determined to be the direct indication mode according to the high-level signaling configuration, the actual power adjustment value f is determined to be the direct indication modead(i) Is "4"; if the obtaining mode of the actual power adjusting value is determined to be an accumulation mode according to the high-level signaling configuration, the actual power adjusting value fad(i) Specific values of "(-1) +0+1+4= 4".
405. The user equipment a calculates the SRS transmission power according to the actual power adjustment value obtained in step 404 and the set of power control parameters obtained in step 402, as follows:
PSRS(i)=min{PCMAX(i),PSRS_OFFSET+10log10(MSRS)+PO_PUSCH(j)+α(j)·PL+fad(i)}；
wherein, PSRS(i) Indicates the transmission power of SRS, PCMAX(i) Is the maximum transmit power, P, of the user equipmentSRS_OFFSET、PO_PUSCH(j) And α (j) are parameters for higher layer configuration, MSRSIs the bandwidth of the SRS, and PL is the path loss information measured by the user equipment.
406. And sending the SRS to the target serving base station according to the SRS transmission power obtained in the step 405, for example, if the target serving base station is the macro base station B, sending the SRS to the macro base station B according to the SRS transmission power obtained in the step 406.
It should be noted that, in this embodiment, the user equipment mainly selects the power control parameter according to the target serving base station as an example for description, and it should be understood that which set of power control parameters should be selected may also be directly indicated by the base station, which is not described herein again. In addition, in this embodiment, only the case of transmitting the power adjustment information through the DCI is taken as an example for description, it should be understood that the power adjustment information may also be transmitted through MAC signaling, where a method for carrying the power adjustment information through the MAC signaling may specifically refer to embodiment two, and is not described herein again.
As can be seen from the above, the macro base station B according to the embodiment of the present invention may send power adjustment information including two power adjustment values of the user equipment a to the user equipment a through DCI signaling, determine a target serving base station by the user equipment a, obtain a corresponding set of power control parameters from preset sets of power control parameters according to the target serving base station, then instruct the user equipment to select a current power adjustment value by carrying indication information in a high-level signaling, further determine an actual power adjustment value, and finally calculate SRS transmission power according to the actual power adjustment value and the obtained set of power control parameters. Because the scheme can adopt different power control parameters and actual power adjustment values to calculate the SRS transmission power aiming at different target service base stations, compared with the prior art that the SRS transmission power can only be fixedly calculated aiming at one service base station and the power adjustment value aiming at one power control process can only be transmitted, the power control precision and flexibility of the SRS in the heterogeneous network are greatly improved.
Example six,
In order to better implement the above method, an embodiment of the present invention further provides a user equipment, as shown in fig. 5, the user equipment includes a receiving unit 501, a parameter selecting unit 502, an adjustment value selecting unit 503, a determining unit 504, and an adjusting unit 505; the receiving unit 501, the parameter selecting unit 502, the adjustment value selecting unit 503, the determining unit 504, and the adjusting unit 505 may be specifically located in a hardware processor;
a receiving unit 501, configured to receive power adjustment information sent by a network side device.
The power adjustment information may specifically include at least one power adjustment value of the ue, and may further include other information related to power adjustment. The power adjustment value is specifically provided by a network side device, such as a base station. In a specific implementation, the power adjustment information may only carry the power adjustment value provided by the target serving base station, or may also carry the power adjustment values provided by a plurality of serving base stations, and then indicate which power adjustment value should be used through high-level signaling configuration.
A parameter selecting unit 502, configured to select a set of power control parameters from multiple preset sets of power control parameters;
an adjustment value selecting unit 503, configured to obtain, based on indication information from the network-side device, a current power adjustment value corresponding to the set of power control parameters selected by the parameter selecting unit 502 from the at least one power adjustment value;
a determining unit 504, configured to determine an actual power adjustment value based on the current power adjustment value determined by the adjustment value selecting unit 503;
an adjusting unit 505, configured to adjust SRS transmission power according to the actual power adjustment value determined by the determining unit 504 and the set of power control parameters selected by the parameter selecting unit 502.
Wherein, each set of power control parameters means corresponding to a power control procedure, and each set of power control parameters may include the maximum transmission power (i.e. P) of the ueCMAX(i) Parameters of higher layer configuration (such as P)SRS_OFFSET、PO_PUSCH(j) And α (j)), bandwidth of the SRS (i.e., M)SRS) And path loss information (pathloss) measured by the user equipment.
Specifically, the power control parameter may be selected according to a preset policy when selecting the power control parameter, where the preset policy may be set according to requirements of actual applications, for example, the preset policy may be selected by the user equipment according to a target serving base station, or may also be selected according to an instruction of the network equipment side, and so on, see the foregoing method embodiment for details, and are not described herein again.
Optionally, when determining the actual power adjustment value, if the obtaining manner of the actual power adjustment value is not specified, the determining unit 504 directly takes the current power adjustment value as the actual power adjustment value, that is, fad(i) = (i-K), wherein fad(i) Representing the actual power adjustment value and (i-K) representing the current power adjustment value. Otherwise, if an obtaining manner of the actual power adjustment value is specified, for example, the obtaining manner of the actual power adjustment value is indicated as a direct indication manner, or the obtaining manner of the actual power adjustment value is indicated as an accumulation manner, etc., at this time, the obtaining manner of the actual power adjustment value also needs to be known first, and for example, any one or more of the following manners may be specifically used:
(1) the first mode is as follows:
the receiving unit 501 is further configured to obtain, through an indication of a high-level signaling, that an obtaining manner of the actual power adjustment value is a direct indication manner;
then, at this time, the determining unit 504 is specifically configured to determine the current power adjustment value as the actual power adjustment value, i.e. fad(i) = (i-K), wherein fad(i) Representing the actual power adjustment value and (i-K) representing the current power adjustment value.
(2) The second mode is as follows:
the receiving unit 501 is further configured to obtain, through an indication of a high-level signaling, that an obtaining manner of the actual power adjustment value is an accumulation manner;
then, at this time, the determining unit 504 is specifically configured to take the sum of the last actual power adjustment value and the current power adjustment value as the actual power adjustment value, i.e. fad(i)=fad(i-1) + (i-K), wherein fad(i) Representing the actual power adjustment value, (i-K) representing the current power adjustment value, fad(i-1) represents the last actual power adjustment value.
In addition, before the user equipment transmits the SRS, the user equipment may also receive a plurality of power adjustment values for the user equipment, and then the actual power adjustment value may also be obtained in the third or fourth manner. The following were used:
(3) the third mode is as follows:
the receiving unit 501 is further configured to obtain, through an indication of a high-level signaling, that an obtaining manner of the actual power adjustment value is a direct indication manner;
then, at this time, the determining unit 504 is specifically configured to select, when there are multiple obtained current power adjustment values, one of the multiple current power adjustment values that is received last as the actual power adjustment value.
(4) The fourth mode is that:
the receiving unit 501 is further configured to obtain, through an indication of a high-level signaling, that an obtaining manner of the actual power adjustment value is an accumulation manner;
then, at this time, the determining unit 504 is specifically configured to use the sum of the plurality of current power adjustment values as the actual power adjustment value when the obtained current power adjustment values are multiple.
For the above methods for determining the actual power adjustment value, reference may be made to the foregoing method embodiments, and details are not described herein.
In addition, in implementation, the power adjustment information may be transmitted through MAC signaling, or DCI may be used to transmit on the PDCCH, that is:
a receiving unit 501, specifically configured to receive power adjustment information transmitted by a network side device through MAC signaling; or,
the receiving unit 501 is specifically configured to receive power adjustment information transmitted by a network side device through DCI. For example, the following may be specifically mentioned:
a receiving unit 501, configured to receive a first DCI sent by a network side device, where the first DCI includes an information bit for transmitting power adjustment information, the information bit is divided into at least two sub-information bits, and each sub-information bit carries a power adjustment value; or,
a receiving unit 501, configured to specifically receive a second DCI sent by a network side device, where the second DCI includes at least two information bits for transmitting power adjustment information, and each information bit carries a power adjustment value; or,
the receiving unit 501 is specifically configured to receive a third DCI sent by a network side device, where the third DCI includes an information bit used for transmitting power adjustment information, and the information bit carries a power adjustment value.
In addition, the DCI may carry indication information in addition to information bits for transmitting power adjustment information, where the indication information is indicated by SRS trigger information bits, that is:
the adjustment value selecting unit 503 is specifically configured to obtain, based on the indication information in the DCI, a current power adjustment value corresponding to the group of power control parameters selected by the parameter selecting unit 502 from the at least one power adjustment value.
Optionally, the indication information may be indicated by a PC-RNTI in addition to the SRS trigger information bit, that is:
if the DCI also implicitly includes the indication information and the DCI is scrambled by using the PC-RNTI, the indication information can be indicated by the PC-RNTI, and at this time, the user equipment can further include a descrambling unit;
a descrambling unit, configured to determine a current PC-RNTI by descrambling the DCI, so as to determine the indication information indicated by the current PC-RNTI;
at this time, the adjustment value selecting unit 503 is specifically configured to obtain, according to the indication information determined by the descrambling unit, a current power adjustment value corresponding to the set of power control parameters selected by the parameter selecting unit 502 from the at least one power adjustment value.
Of course, besides carrying the indication information through the DCI, the indication information may also be obtained through other manners, for example, through higher layer signaling configuration, that is:
the receiving unit 501 is further configured to receive a high-level signaling sent by a network side device, where the high-level signaling carries the indication information.
In addition, in order to improve transmission efficiency, power adjustment information for a plurality of user equipments may be carried in DCI, and then the user equipments are informed of the specific position of their corresponding power adjustment information in the DCI through higher layer signaling configuration. That is, if at least one other power adjustment value of the other user equipment is included in the power adjustment information, then:
a receiving unit 501, configured to receive a high-level signaling that is sent by a network side device and carries a correspondence between the at least one power adjustment value and a user equipment;
then, the adjustment value selecting unit 503 is further configured to extract the at least one power adjustment value for the ue in the power adjustment information based on the corresponding relationship between the at least one power adjustment value and the ue.
The user equipment may be a mobile phone, a tablet computer, a notebook computer, or the like. The network side device may specifically be a base station (including an evolved base station), such as a serving macro base station or a serving micro base station, and if the user equipment has multiple serving base stations, the network side device may specifically be any one of the multiple serving base stations, such as a downlink serving base station in general, where information provided by other serving base stations, such as a power adjustment value, may be transmitted to the serving base station (i.e., a network side device) through communication between the base stations, and is transmitted to the user equipment by the serving base station (i.e., the network side device).
It should be noted that, in a specific implementation, each of the above units may be implemented as an independent entity, or may be optionally combined to be implemented as one or several entities, and the implementation of each of the above units may specifically refer to the foregoing method embodiment, which is not described herein again.
As can be seen from the above, the receiving unit 501 of the ue according to the embodiment of the present invention may receive power adjustment information including at least one power adjustment value of the ue sent by the network side device, select one set of power control parameters from preset sets of power control parameters by the parameter selecting unit 502, then obtain, by the adjustment value selecting unit 503, a current power adjustment value corresponding to the selected set of power control parameters from the at least one power adjustment value based on the indication information from the network side device, determine, by the determining unit 504, an actual power adjustment value based on the current power adjustment value, and finally adjust, by the adjusting unit 505, the SRS transmission power according to the actual power adjustment value and the selected set of power control parameters. According to the scheme, different power control parameters can be selected according to different preset strategies, such as aiming at different target service base stations, or aiming at different control algorithms in the service base stations, and the like, and the indication information is used for indicating the user equipment to select the corresponding power adjustment value from multiple groups of power adjustment values to adjust the sending power of the SRS, so that compared with the prior art that the sending power of the SRS can be fixedly calculated aiming at one service base station, and the power adjustment value aiming at one power control process can be sent only, the power control precision and flexibility of the SRS in a multipoint service technology network, especially under a heterogeneous network, are greatly improved.
Example seven,
Correspondingly, an embodiment of the present invention further provides a network side device, as shown in fig. 6, the network side device includes a determining unit 601 and a sending unit 602; the determining unit 601 and the sending unit 602 may be specifically located in a hardware processor;
a determining unit 601, configured to determine, among at least one power adjustment value of the user equipment, a current power adjustment value corresponding to a set of power control parameters selected by the user equipment;
wherein, the "one group of power control parameters selected by the user equipment" is selected by the user equipment from a plurality of preset groups of power control parameters; the current power adjustment value and the "selected set of power control parameters" are used for adjusting the transmission power of the sounding reference signal of the user equipment; for details, reference may be made to the foregoing embodiments, which are not described herein again.
A sending unit 602, configured to provide power adjustment information including at least one power adjustment value to a user equipment, and indication information indicating a current power adjustment value in the at least one power adjustment value.
For example, the power adjustment information may be specifically sent to the user equipment through MAC signaling; alternatively, the power adjustment information may also be transmitted to the user equipment through DCI, that is:
a sending unit 601, specifically configured to send power adjustment information to the ue through MAC signaling; or,
the sending unit 602 is specifically configured to send power adjustment information to the ue through a downlink control signaling.
The indication information may be provided to the user equipment in various ways, such as by a higher layer control signaling configuration, or the indication information may be transmitted to the user equipment through DCI if the power adjustment information is transmitted through DCI. For example, the indication information may be obtained in any one of the following manners:
(1) the indication is performed through the SRS trigger information bit in the DCI, see embodiment one, which is not described herein again.
(2) Indicated by PC-RNTI;
then, at this time, the network side device may further include a scrambling unit;
a scrambling unit, configured to scramble the DCI by using the PC-RNTI before the DCI is used to send the power adjustment information to the user equipment, so that the user equipment determines a current PC-RNTI by descrambling the DCI, and further determines the indication information indicated by the current PC-RNTI, which is referred to in the first embodiment and is not described herein again.
(3) Indicated by a higher layer signaling configuration;
then, at this time, the sending unit 601 is further configured to send a higher layer signaling carrying the indication information to the ue.
In addition, in order to improve transmission efficiency, power adjustment information for a plurality of user equipments may be carried in DCI, and then the user equipments are informed of the specific position of their corresponding power adjustment information in the DCI through higher layer signaling configuration. That is, if the power adjustment information further includes at least one other power adjustment value of the other user equipment, then:
the sending unit 601 is further configured to provide, before providing power adjustment information including at least one power adjustment value to the user equipment, a high-layer signaling carrying a correspondence between the at least one power adjustment value and the user equipment to the user equipment, so that the user equipment extracts the at least one power adjustment value for the user equipment in the power adjustment information according to the correspondence between the at least one power adjustment value and the user equipment.
The network side device may specifically be a base station (including an evolved base station), such as a serving macro base station or a serving micro base station.
It should be noted that, in a specific implementation, each of the above units may be implemented as an independent entity, or may be optionally combined to be implemented as one or several entities, and the implementation of each of the above units may specifically refer to the foregoing method embodiment, which is not described herein again.
As can be seen from the above, the determining unit 601 of the network side device of this embodiment may determine, in at least one power adjustment value of the user equipment, a current power adjustment value corresponding to a set of power control parameters selected by the user equipment, and then the transmitting unit 601 provides, to the user equipment, power adjustment information including the at least one power adjustment value and indication information for indicating the current power adjustment value in the at least one power adjustment value, so that the user equipment may select a corresponding power adjustment value in multiple sets of power adjustment values for different power control parameters to adjust the transmission power of the SRS, thereby greatly improving the power control accuracy and flexibility of the SRS in the multipoint service technology network, especially in the heterogeneous network.
In the base station and the user equipment in the seventh embodiment and the eighth embodiment, the function performed by each unit is described in the previous method flow, which is not described herein again.
Example eight,
Correspondingly, an embodiment of the present invention further provides a communication system, including any one of the user equipments provided in the embodiments of the present invention, where the description of the user equipment may specifically refer to embodiment six, for example, specifically, the following may be provided:
the system comprises user equipment and a network side device, wherein the user equipment is used for receiving power adjustment information sent by the network side device, and the power adjustment information comprises at least one power adjustment value of the user equipment; selecting a group of power control parameters from a plurality of groups of preset power control parameters; acquiring a current power adjustment value corresponding to the selected group of power control parameters from the at least one power adjustment value based on indication information from network side equipment; determining an actual power adjustment value based on the current power adjustment value; and adjusting the sending power of the SRS according to the actual power adjustment value and the selected group of power control parameters.
For example, the actual power adjustment value may be determined based on the current power adjustment value, and reference may be made to the foregoing method embodiment, which is not described herein again.
In addition, the transmission of the power adjustment information may also be transmitted in various manners, for example, MAC signaling may be used for transmission, or DCI may also be used for transmission on the PDCCH, and so on, that is:
the user equipment is specifically used for receiving power adjustment information transmitted by the network side equipment through MAC signaling; or,
the user equipment is specifically configured to receive the power adjustment information transmitted by the network side equipment through the DCI, which may specifically refer to the foregoing embodiment and is not described herein again.
In addition, the communication system may further include any network-side device provided in the embodiment of the present invention, which may specifically refer to embodiment seven, and for example, may specifically be as follows:
the network side equipment is used for determining a current power adjustment value corresponding to a group of power control parameters selected by the user equipment in at least one power adjustment value of the user equipment, wherein the group of power control parameters selected by the user equipment is selected by the user equipment from a plurality of preset groups of power control parameters; the current power adjustment value and the selected power control parameter set are used for adjusting the transmission power of the measurement reference signal of the user equipment; providing the user equipment with power adjustment information including at least one power adjustment value and indication information for indicating a current power adjustment value in the at least one power adjustment value, for details, see the previous embodiments, and will not be described herein again.
As can be seen from the above, the ue in the communication system according to the embodiment of the present invention may receive power adjustment information, which is sent by a network side device and includes at least one power adjustment value of the ue, select one set of power control parameters from preset multiple sets of power control parameters, then obtain, based on indication information from the network side device, a current power adjustment value corresponding to the selected set of power control parameters from the at least one power adjustment value, determine an actual power adjustment value based on the current power adjustment value, and finally adjust the SRS transmission power according to the actual power adjustment value and the selected set of power control parameters. According to the scheme, different power control parameters can be selected according to different preset strategies, such as aiming at different target service base stations, or aiming at different control algorithms in the service base stations, and the like, and the indication information is used for indicating the user equipment to select the corresponding power adjustment value from multiple groups of power adjustment values to adjust the sending power of the SRS, so that compared with the prior art that the sending power of the SRS can be fixedly calculated aiming at one service base station, and the power adjustment value aiming at one power control process can be sent only, the power control precision and flexibility of the SRS in a multipoint service technology network, especially under a heterogeneous network, are greatly improved.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
The SRS power control method, apparatus and system provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (27)

1. A power control method for measuring a reference signal, comprising:
receiving power adjustment information sent by network side equipment, wherein the power adjustment information comprises at least one power adjustment value of user equipment;
selecting a group of power control parameters from a plurality of groups of preset power control parameters;
acquiring a current power adjustment value corresponding to the group of power control parameters from the at least one power adjustment value based on indication information from network side equipment;
determining an actual power adjustment value based on the current power adjustment value;
adjusting the transmission power of the measurement reference signal according to the actual power adjustment value and the group of power control parameters;
the receiving of the power adjustment information sent by the network side device includes:
receiving power adjustment information transmitted by network side equipment through a media access layer signaling; or,
and receiving power adjustment information transmitted by the network side equipment through the downlink control signaling.
2. The method according to claim 1, wherein before receiving the power adjustment information sent by the network side device, the method further comprises:
acquiring that the actual power adjustment value is obtained in a direct indication mode through indication of a high-level signaling from network side equipment;
said determining an actual power adjustment value based on the current power adjustment value comprises: determining the current power adjustment value as an actual power adjustment value based on a direct indication.
3. The method of claim 1, further comprising, before receiving the power adjustment information sent by the network-side device:
acquiring that the actual power adjustment value is obtained in an accumulation mode through an indication of a high-level signaling from network side equipment;
said determining an actual power adjustment value based on the current power adjustment value comprises: and taking the sum of the last actual power adjustment value and the current power adjustment value as an actual power adjustment value based on an accumulation mode.
4. The method of claim 1,
the downlink control signaling further includes the indication information, and the indication information is indicated by measuring a reference signal trigger information bit.
5. The method of claim 1,
the downlink control signaling is scrambled by a wireless network temporary identity identifier, and the indication information is indicated by the wireless network temporary identity identifier;
the obtaining, based on the indication information from the network side device, a current power adjustment value corresponding to the set of power control parameters from among the at least one power adjustment value includes: and determining the wireless network temporary identity through descrambling the downlink control signaling so as to determine the indication information indicated by the wireless network temporary identity.
6. The method according to claim 1, wherein before receiving the power adjustment information sent by the network side device, the method further comprises:
and receiving a high-level signaling which is sent by the network side equipment and carries the indication information.
7. The method according to any of claims 1 to 6, wherein the power adjustment information further comprises at least one other power adjustment value of other user equipments, then:
before the receiving the power adjustment information sent by the network side device, the method further includes: receiving a high-level signaling which is sent by the network side equipment and carries the corresponding relation between the at least one power adjustment value and the user equipment;
before the obtaining, based on the indication information from the network side device, a current power adjustment value corresponding to the set of power control parameters from the at least one power adjustment value, the method further includes: and extracting the at least one power adjustment value for the user equipment in the power adjustment information based on the corresponding relation between the at least one power adjustment value and the user equipment.
8. The method of claim 7, wherein the adjusting the transmit power of the sounding reference signal according to the actual power adjustment value and the set of power control parameters comprises:
calculating the transmission power of the measurement reference signal based on the following formula:
PSRS(i)＝min{PCMAX(i),PSRS_OFFSET+10log10(MSRS)+PO_PUSCH(j)+α(j)·PL+f(i)}；
wherein P isSRS(i) For the transmission power of the measurement reference signal, PCMAX(i) Is the maximum transmit power, P, of the user equipmentSRS_OFFSET、PO_PUSCH(j) And α (j) is the set of power control parameters, MSRSIs the bandwidth of the measurement reference signal, PL is the path loss information measured by the user equipment, and f (i) is the actual power adjustment value.
9. A power control method for measuring a reference signal, comprising:
determining a current power adjustment value corresponding to a group of power control parameters selected by the user equipment from at least one power adjustment value of the user equipment, wherein the group of power control parameters is selected by the user equipment from a plurality of preset groups of power control parameters; the current power adjustment value and the set of power control parameters are used for adjusting the transmission power of a measurement reference signal of user equipment;
providing power adjustment information including at least one power adjustment value and indication information for indicating a current power adjustment value among the at least one power adjustment value to a user equipment;
the providing power adjustment information including at least one power adjustment value to the user equipment includes:
transmitting power adjustment information to user equipment through a media access layer signaling; or,
and sending power adjustment information to the user equipment through the downlink control signaling.
10. The method of claim 9,
the downlink control signaling further includes the indication information, and the indication information is indicated by measuring a reference signal trigger information bit.
11. The method of claim 10, wherein the indication information is indicated by a radio network temporary identity, and before the sending the power adjustment information to the ue through the downlink control signaling, the method further comprises:
and scrambling the downlink control signaling by adopting the wireless network temporary identity so as to indicate the current power adjustment value in at least one power adjustment value through the wireless network temporary identity.
12. The method according to claim 10 or 11, wherein providing power adjustment information comprising at least one power adjustment value to the user equipment, and wherein the indication information for indicating the current power adjustment value in the at least one power adjustment value comprises:
sending a high-level signaling carrying the indication information to the user equipment;
power adjustment information including at least one power adjustment value is provided to the user equipment.
13. The method of claim 12, wherein the power adjustment information further includes at least one other power adjustment value of other ue, and before the providing the power adjustment information including the at least one power adjustment value to the ue, further comprising:
and providing a high-level signaling carrying a corresponding relation between the at least one power adjustment value and the user equipment to the user equipment, wherein the corresponding relation is used for indicating the at least one power adjustment value for the user equipment in the power adjustment information.
14. A user device, comprising:
a receiving unit, configured to receive power adjustment information sent by a network side device, where the power adjustment information includes at least one power adjustment value of a user equipment;
the parameter selection unit is used for selecting a group of power control parameters from a plurality of groups of preset power control parameters;
an adjustment value selecting unit, configured to obtain, based on indication information from a network-side device, a current power adjustment value corresponding to the group of power control parameters from the at least one power adjustment value;
a determining unit for determining an actual power adjustment value based on the current power adjustment value;
an adjusting unit, configured to adjust the transmit power of the sounding reference signal according to the actual power adjustment value and the set of power control parameters;
the receiving unit is specifically configured to receive power adjustment information transmitted by a network side device through a media access layer signaling; or,
the receiving unit is specifically configured to receive power adjustment information transmitted by the network side device through the downlink control signaling.
15. The user equipment of claim 14,
the receiving unit is further configured to obtain, through an indication of a high-level signaling from a network side device, that an acquisition manner of the actual power adjustment value is a direct indication manner;
the determining unit is specifically configured to determine the current power adjustment value as an actual power adjustment value based on a direct indication manner.
16. The user equipment of claim 14,
the receiving unit is further configured to obtain, from a network side device, that an acquisition manner of the actual power adjustment value is an accumulation manner through an instruction of a high-level signaling;
the determining unit is specifically configured to use a sum of the last actual power adjustment value and the current power adjustment value as the actual power adjustment value based on an accumulation manner.
17. The ue according to claim 14, wherein the downlink control signaling further includes the indication information, and the indication information is indicated by measuring a reference signal trigger information bit, then:
the adjustment value selecting unit is specifically configured to obtain, based on indication information in the downlink control signaling, a current power adjustment value corresponding to the group of power control parameters from the at least one power adjustment value.
18. The UE of claim 14, wherein the downlink control signaling is scrambled by using a radio network temporary identity, and the indication information is indicated by using the radio network temporary identity, further comprising a descrambling unit;
the descrambling unit is configured to determine the radio network temporary identity by descrambling the downlink control signaling, so as to determine the indication information indicated by the radio network temporary identity;
the adjustment value selecting unit is specifically configured to obtain, according to the indication information determined by the descrambling unit, a current power adjustment value corresponding to the group of power control parameters from the at least one power adjustment value.
19. The user equipment of claim 14,
the receiving unit is further configured to receive a high-level signaling carrying the indication information and sent by a network side device.
20. The UE of any one of claims 14 to 19, wherein the power adjustment information further includes at least one other power adjustment value of other UEs, then:
the receiving unit is further configured to receive a high-level signaling carrying a correspondence between the at least one power adjustment value and the user equipment, where the high-level signaling is sent by the network side device;
the adjustment value selecting unit is further configured to extract the at least one power adjustment value for the user equipment in the power adjustment information based on a corresponding relationship between the at least one power adjustment value and the user equipment.
21. The ue of claim 20, wherein the adjusting unit is specifically configured to calculate the transmit power of the srs based on the following formula:
PSRS(i)＝min{PCMAX(i),PSRS_OFFSET+10log10(MSRS)+PO_PUSCH(j)+α(j)·PL+f(i)}；
wherein P isSRS(i) For the transmission power of the measurement reference signal, PCMAX(i) Is the maximum transmit power, P, of the user equipmentSRS_OFFSET、PO_PUSCH(j) And α (j) is the set of power control parameters, MSRSIs the bandwidth of the measurement reference signal, PL is the path loss information measured by the user equipment, and f (i) is the actual power adjustment value.
22. A network-side device, comprising:
a determining unit, configured to determine, among at least one power adjustment value of a user equipment, a current power adjustment value corresponding to a group of power control parameters selected by the user equipment, where the group of power control parameters is selected by the user equipment from among preset groups of power control parameters; the current power adjustment value and the set of power control parameters are used for adjusting the transmission power of a measurement reference signal of user equipment;
a transmitting unit, configured to provide power adjustment information including at least one power adjustment value and indication information indicating a current power adjustment value in the at least one power adjustment value to a user equipment;
the sending unit is specifically configured to send power adjustment information to the user equipment through a media access layer signaling; or,
the sending unit is specifically configured to send the power adjustment information to the user equipment through the downlink control signaling.
23. The network-side device of claim 22,
the downlink control signaling further includes the indication information, and the indication information is indicated by measuring a reference signal trigger information bit.
24. The network-side device of claim 23, wherein the indication information is indicated by a radio network temporary identity, and further comprises a scrambling unit;
and the scrambling unit is used for scrambling the downlink control signaling by adopting the wireless network temporary identity before transmitting power adjustment information to the user equipment through the downlink control signaling so as to indicate the current power adjustment value in at least one power adjustment value through the wireless network temporary identity.
25. The network-side device of claim 23 or 24,
the sending unit is further configured to send a high-level signaling carrying the indication information to the user equipment.
26. The network-side device of claim 25, wherein the power adjustment information further includes at least one other power adjustment value of other user devices, then:
the sending unit is further configured to provide, to the ue, a high-level signaling carrying a correspondence between at least one power adjustment value and the ue before providing, to the ue, power adjustment information including the at least one power adjustment value, where the correspondence is used to indicate, in the power adjustment information, the at least one power adjustment value for the ue.
27. A communication system, comprising any user equipment of claims 14 to 21 and any network side equipment of claims 22 to 26.
CN201210146279.5A 2012-05-11 2012-05-11 The Poewr control method of measuring reference signals, device and system Active CN103391607B (en)

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