CN1536905A - Method for matiching transmitting power of channel in wireless communication system - Google Patents
Method for matiching transmitting power of channel in wireless communication system Download PDFInfo
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Abstract
The invention refers to a method for configuring transmitting power of channel in wireless communication system, especially applies to the time division duplex system of the third generation mobile communication system. The method includes: A. the control unit of fixed station configures the transmitting power relative parameter of channel based on the referenced frequency expansion factor; B. the fixed station and mobile station calculate and acquire the adjustment amount according to the relation between the actual frequency expansion factor in channel and the referenced frequency expansion factor, and adds the adjustment amount based on the transmitting power relative parameter configured in step A, and acquires the actual transmitting power relation parameter; C. the fixed station or mobile station carries on open loop or close loop power control according to the actual transmitting power relation parameter. The adjustment amount is calculated according to S=10 X log (referenced frequency expansion factor/ the actual frequency expansion factor of channel), the unit is dB. The control unit of fixed station needn't to consider the affection to the transmitting power relative power caused by the frequency expansion factor, the structure is simpler.
Description
Technical field
The present invention relates to a kind of wireless mobile telecommunication technology, relate to the collocation method of a kind of channel emission power in the cdma wireless mobile communication system or rather, be specially adapted to use in time division duplex (TDD) system in 3-G (Generation Three mobile communication system).
Background technology
In mobile radio system, can realize the business that travelling carriage is required by one or more channels between travelling carriage and the fixed station.These channels can be distinguished with different frequencies or time, and also available different channel code is distinguished channel in cdma system.Also promptly, the various combination of cdma wireless mobile communication system frequency of utilization, time and channel code is distinguished channel.According to the different business requirement of travelling carriage, channel type can be divided into common signal channel and dedicated channel.
Travelling carriage is having under the situation of business demand, can set up wireless connections with certain fixed station, and these wireless connections can comprise the channel of one or more a certain types, i.e. dedicated channel or common signal channel.Carrying out under the situation about switching the sub-district, can set up one or more wireless connections between travelling carriage and base station, the identical information content of transmission in these wireless connections, these wireless connections can be between travelling carriage and fixed station or exist between travelling carriage and a plurality of fixed station.In CDMA mobile communication system, the configuration of channel transmitting power is the important step of system power control.
As shown in Figure 1, comprise a fixed station 40 in the mobile radio system at least, this fixed station can be set up wireless connections simultaneously with a plurality of travelling carriages 30.There are control unit 10 and transmitter unit 20 in the fixed station 40, wherein, the relevant parameter of channel emission power between control unit 10 configuration fixed stations 40 and the travelling carriage 30, transmitter unit 20 is according to the transmitting power relevant parameter of control unit 10 configurations, use the channel that is comprised in the wireless connections of having set up, transmit to one or more travelling carriages 30 simultaneously; 30 transmitting power relevant parameters that dispose for it according to control unit 10 of travelling carriage use the channel that is comprised in the wireless connections of having set up to transmit to fixed station 40.
For common signal channel, travelling carriage 30 uses open-loop power control method, determines channel transmitting power by formula (1):
Ptx＝P_L+Z+Prx (1)
Wherein: Ptx represents the travelling carriage channel transmitting power, the dBm of unit; P_L represents from travelling carriage 30 to fixed station 40 path loss, and unit is dB; Z represents a correcting value, and unit is dB, and P_L and Z are estimated to determine by travelling carriage; Prx represents the received power of fixed station 40 ends expectation, is configured by control unit 10, and unit is dBm.
For dedicated channel, travelling carriage 30 uses the Initial Trans of the method identical with common signal channel (by formula 1) configure dedicated channel, and keeps this transmitting power to change the closed power state of a control over to behind the power control command of receiving fixed station.
The transmitter unit 20 of fixed station uses the transmitting power relevant parameter of control unit 10 configurations to launch when transmitting.For common signal channel, these parameters comprise the transmitting power of down channel; For dedicated channel, these parameters comprise the Initial Trans of channel, the maximum transmitting power that allows and the minimum transmitting power that allows etc.
For common signal channel, transmitter unit 20 uses the down channel transmitting power emission of control unit 10 configurations; For dedicated channel, transmitter unit 20 uses the Initial Trans of the channel of control unit 10 configurations to begin emission, and then change under the state of closed power control, this moment, channel transmitting power must guarantee to be not less than the transmitting power that the minimum of control unit 10 configurations allows, and was not more than the transmitting power that the maximum of control unit 10 configurations allows simultaneously.
Above-mentioned in mobile radio system the technology of the transmitting power of configurating channel have following shortcoming:
For common signal channel, if disposed a plurality of common signal channels between fixed station and the travelling carriage, require when these common signal channels have identical transmitting power, but when having different spreading factors, control unit 10 must be separately to these channel configuration transmitting power relevant parameters.
For dedicated channel, be the transmitting power relevant parameter identical to all channel configurations under the wireless connections, like this, the channel under wireless connections can not have different spreading factors, otherwise, can cause serious adverse consequences.
In addition, the channel under wireless connections may have different transmitting power requirements, obviously is unfavorable to the identical transmitting power relevant parameter of all channel configurations under the wireless connections.And in the TDD system, the channel under wireless connections may be assigned in the different time slots, and different time slots may have different interference powers, obviously also is unfavorable for the identical transmitting power relevant parameter of the channel configuration of different time-gap.
Summary of the invention
The objective of the invention is to design a kind of in wireless communication system the method for the transmitting power of configurating channel, it is a kind of method of new configurating channel transmitting power, the control unit of fixed station need not to consider the influence of spreading factor, can carry out the configuration of transmitting power to the various channel allocation modes between travelling carriage and the fixed station, and whole implementation method is simple.
The technical scheme that realizes the object of the invention is such: a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that may further comprise the steps:
A. the control unit of fixed station is a benchmark with the spreading factor of reference, the transmitting power relevant parameter of configurating channel;
B. fixed station or travelling carriage are according to the relation between the spreading factor of the actual spreading factor of channel and reference, calculate and obtain adjustment amount, and on the channel transmitting power relevant parameter basis of steps A configuration, increase this adjustment amount, obtain the transmitting power relevant parameter of the actual use of channel;
C. fixed station or travelling carriage carry out open loop or closed power control according to the transmitting power relevant parameter of the actual use of channel.
The channel transmitting power relevant parameter that disposes in the described steps A for the channel of travelling carriage emission, comprises the received power of fixed station expectation or the maximal received power of fixed station expectation; Channel for the fixed station emission comprises fixed station down channel transmitting power, the Initial Trans of channel, the maximum transmitting power that allows and the minimum transmitting power that allows.
Described steps A further comprises: to one group of channel by identical services quality requirement set, be an identical transmitting power relevant parameter of this channel group of baseline configuration with the spreading factor of a reference; To the channel group of different business quality requirement set, be the different transmitting power relevant parameter of each channel group of baseline configuration with the spreading factor of a reference.
Described steps A further comprises: in TDD radio communication system, to a channel that is in different time-gap, be the different transmitting power relevant parameter of each this channel of time slot of baseline configuration with the spreading factor of a reference.
Described steps A further comprises: to different types of common signal channel, be benchmark with the spreading factor of a reference, and the identical transmitting power relevant parameter of unified configuration.
Described steps A further comprises: to all channels under the wireless connections, be benchmark with the spreading factor of a reference, and the identical transmitting power relevant parameter of unified configuration.
The spreading factor of described reference is that the form with a default value is recorded in fixed station and the travelling carriage, perhaps by the control unit of fixed station by signaling fixed station and travelling carriage.
Described step B, described adjustment amount calculates according to S=10 * log (the actual spreading factor of the spreading factor/channel of reference), and unit is dB.
Described step C, fixed station or travelling carriage for the emission common signal channel, carry out open Loop Power control with the actual transmitting power relevant parameter that uses; For the emission dedicated channel, carry out open Loop Power control with the actual transmitting power relevant parameter that uses earlier, and keep this transmitting power relevant parameter, after receiving power control command, change closed power control over to.
The present invention has the following advantages with respect to existing method:
Can carry out the configuration of transmitting power relevant parameter to the various channel allocation modes between travelling carriage and the fixed station; The control unit of fixed station need not to consider the influence of spreading factor to the transmitting power relevant parameter, but with the influence of spreading factor to the transmitting power relevant parameter, mode with adjustment amount adds in fixed station or the calculating of travelling carriage to the transmitting power relevant parameter of reality use, can make the control unit of fixed station more simple, and whole implementation method is simple.
Description of drawings
Fig. 1 is in the mobile radio system, the process schematic diagram of launching by the transmitting power relevant parameter of control unit configuration between fixed station and travelling carriage;
Fig. 2 is the layoutprocedure schematic diagram of the inventive method channel emission power relevant parameter;
Fig. 3 is the frame structure schematic diagram of CDMA TDD mobile radio system.
Embodiment
The defective that the present invention is directed to prior art has proposed a kind of collocation method of new channel emission power relevant parameter.
The collocation method of channel emission power relevant parameter of the present invention is described in conjunction with Fig. 1 earlier.
The control unit 10 of fixed station 40 is the configuration that benchmark carries out the channel emission power relevant parameter with the spreading factor of some references, is taken as 16 as the spreading factor with reference.
For common signal channel, the transmitting power of travelling carriage 30 is used open-loop power control method, and the actual transmitting power Ptx that uses is determined by formula (2):
Ptx＝P_L+Z+S+Prx (2)
With respect to formula (1), formula (2) has following difference:
Prx: be that spreading factor (being taken as 16) with reference is the transmitting power that benchmark is configured;
S: be adjustment amount, when being not equal to 16, need to increase this adjustment amount as actual spreading factor when channel.Particularly, S=10 * log (the actual spreading factor of the spreading factor/channel of reference), unit is dB; For example the actual spreading factor of channel is 8, and S=10 * log2, S correspondingly get 3dB.
For dedicated channel, the identical Prx of channel configuration of travelling carriage 30 emissions under 10 pairs of wireless connections of control unit, travelling carriage 30 adopts formula (2) to determine the Initial Trans of the actual use of each channel respectively, and keeps this transmitting power up to entering the closed power state of a control.
Fixed station is when the emission common signal channel, transmitter unit 20 is on the basis of down channel transmitting power of baseline configuration with the spreading factor (being taken as 16) of reference at control unit 10, increase an adjustment amount S again, draw the actual emission power of channel, transmit with this actual emission power then.Definite method of S is the same.
Fixed station is when the emission dedicated channel, the channel of the fixed station emission under 10 pairs of wireless connections of control unit, dispose identical transmitting power relevant parameter, these transmitting power relevant parameters comprise the Initial Trans of channel, the maximum transmitting power that allows and the minimum transmitting power that allows.Therefore, transmitter unit 20 is when the emission dedicated channel, earlier according to the actual spreading factor of each channel and with reference to the relation between spreading factor, try to achieve adjustment amount S, utilize following formula (3), (4), (5) S to be added in each transmitting power relevant parameter of control unit 10 configurations then, draw the Initial Trans of the actual use of each channel, the maximum transmitting power that allows and the minimum transmitting power that allows respectively, that is:
Pinit_r＝Pinit_b+S (3)；
Pmax_r＝Pmax_b+S (4)；
Pmin_r＝Pmin_b+S (5)；
Wherein:
Pinit_r: the actual Initial Trans of channel, the dBm of unit;
Pmax_r: the transmitting power that the maximum of the reality of channel allows, the dBm of unit;
Pmin_r: the transmitting power that the minimum of the reality of channel allows, the dBm of unit;
Pinit_b: control unit 10 is the Initial Trans of baseline configuration with the spreading factor (being taken as 16) of reference, the dBm of unit;
Pmax_b: control unit 10 is the transmitting power of the maximum permission of baseline configuration with the spreading factor (being taken as 16) of reference, the dBm of unit;
Pmin_b: control unit 10 is the transmitting power of the minimum permission of baseline configuration with the spreading factor (being taken as 16) of reference, the dBm of unit;
S: when the actual spreading factor of channel is not equal to 16, need to increase this adjustment amount S, the same following formula of the calculating of S.
Referring to Fig. 2, the layoutprocedure of fixed station shown in the figure 40 and 30 channel emission powers of travelling carriage.Wherein fixed station comprises control unit and transmitter unit.
Step 200, the control unit of fixed station is a benchmark with the spreading factor of some references, carries out the configuration of channel transmitting power relevant parameter, is 16 as the spreading factor of selecting reference.The channel transmitting power relevant parameter for the channel of travelling carriage emission, comprises the received power of fixed station expectation or the maximal received power of fixed station expectation; Channel for the fixed station emission comprises fixed station down channel transmitting power, the Initial Trans of channel, maximum transmitting power and the minimum transmitting power that allows of allowing.
Step 250, the control unit of fixed station is the channel transmitting power relevant parameter that benchmark was disposed by high-level signaling to the spreading factor that travelling carriage sends with some references, and other channel parameters.
Simultaneously, the control unit of fixed station is the channel transmitting power relevant parameter that benchmark was disposed to the spreading factor that its transmitter unit sends with some references.
Step 260, travelling carriage reception fixed station control unit is the channel transmitting power relevant parameter that benchmark was disposed with the spreading factor of some references, is the received power (being used for open Loop Power control) of fixed station expectation for this transmitting power relevant parameter of common signal channel; For dedicated channel, this transmitting power relevant parameter is the received power (carry out open Loop Power control earlier, change closed power control again over to) of fixed station expectation
Step 270, the channel parameter that the travelling carriage utilization receives obtains actual spreading factor, again according to the spreading factor of reference and the adjustment amount S that concerns calculating channel of the spreading factor of reality.
Step 280 according to the result of step 260 and step 270, is utilized the transmitting power relevant parameter of the actual use of formula (2) calculating channel.
Step 290 is carried out open loop or closed power control according to the transmitting power relevant parameter that calculates the actual use of channel that obtains, and particularly, for common signal channel, uses the open Loop Power control mode; For dedicated channel, adopt the open Loop Power control mode earlier, after receiving the power control command of fixed station, change the closed power state of a control over to.
Following steps and step 260,270,280,290 are carried out synchronously.
Step 210, fixed station transmitter unit reception fixed station control unit is the channel transmitting power relevant parameter that benchmark was disposed with the spreading factor of some references, is fixed station down channel transmitting power (being used for open Loop Power control) for this transmitting power relevant parameter of common signal channel; For dedicated channel, this transmitting power relevant parameter comprises the Initial Trans of the channel of fixed station, maximum transmitting power and the minimum transmitting power (carry out open Loop Power control earlier, change closed power control again over to) that allows of allowing.
Step 220, the channel parameter that the utilization of fixed station transmitter unit receives obtains actual spreading factor, again according to the spreading factor of reference and the correcting value S that concerns calculating channel of the spreading factor of reality.
Step 230 according to the result of step 210 and step 220, when the emission common signal channel, adds adjustment amount S with the fixed station down channel transmitting power that disposes, and obtains the actual emission power of channel; When the emission dedicated channel, utilize the Initial Trans of formula (3), (4), the actual use of (5) calculating channel, maximum transmitting power and the minimum transmitting power that allows of allowing.
Step 240 is carried out open loop or closed power control according to the transmitting power relevant parameter that calculates the actual use of channel that obtains, and particularly, for common signal channel, uses the open Loop Power control mode; For dedicated channel, adopt the open Loop Power control mode earlier, after receiving the power control command of travelling carriage, change the closed power state of a control over to.When being open loop power control, with the Initial Trans emission of the actual use of channel, when changing closed power control over to, the minimum permission transmitting power that channel transmitting power must guarantee to be not less than actual uses is not more than the maximum permission transmitting power of actual use simultaneously.
Method of the present invention is when implementing, the control unit of fixed station is at the spreading factor based on reference, during the transmitting power relevant parameter of configurating channel, for dedicated channel, if the channel under wireless connections has different transmitting power requirements, control unit can dispose different transmitting power relevant parameters respectively to the channel set (channel group) with different business quality requirement (different transmission power requirement), but in same channel set (channel group) configurable same transmitting power relevant parameter.Similarly, be that spreading factor with some references is that benchmark carries out the configuration of transmitting power relevant parameter.After the transmitter unit of travelling carriage or fixed station obtains the transmitting power relevant parameter configuration of channel set (channel group), the process of using Fig. 2 to describe, each channel transmitting power under the configurating channel set.
For CDMA TDD system, different channels can be distinguished service time, and as shown in Figure 3, channel can be by channel code (channel code 0 is to channel code 15), time (time slot 0,1, ..., i, i+1, i+2, ..., K) and transmit direction (time slot 0 carries out fixed station emission to time slot i, and time slot i+1 carries out the travelling carriage emission to time slot K) unite and distinguish.I and K are positive integer.If the channel under wireless connections is in different time slots, channel as channel code 11 not only is in time slot 0 but also be in time slot 1, because different time slots may have different interference powers, so the channel of different time-gap may have different transmitting power requirements.The control unit of fixed station can be benchmark with the spreading factor of a reference, to being in the channel difference configuration of transmit power relevant parameter of different time-gap.After the transmitter unit of travelling carriage or fixed station obtained the transmitting power relevant parameter configuration of different time-gap, the process of using Fig. 2 description was with regard to each channel transmitting power under the configurable different time-gap.
Use the mobile radio system of the inventive method, at least comprise a fixed station, there are control unit and transmitter unit in the fixed station, channel transmitting power relevant parameter between control unit configuration fixed station and the travelling carriage, this fixed station can be set up wireless connections simultaneously with a plurality of travelling carriages.The transmitter unit of fixed station can use the signal channel launched that comprises in the wireless connections of having set up to one or more travelling carriages simultaneously according to the configuration of control unit; Travelling carriage can use the signal channel launched that comprises in the wireless connections of having set up to fixed station according to the configuration of control unit.
The control unit of fixed station is that the spreading factor with some references is that benchmark carries out when the transmitting power relevant parameter of configurating channel.The transmitter unit of fixed station, according to the channel transmitting power relevant parameter of fixed station control unit configuration, and the spreading factor of actual transmission channel and with reference to the relation of spreading factor, obtain the transmitting power relevant parameter of the actual use of channel; The transmitter unit of travelling carriage, according to the channel transmitting power relevant parameter of the control unit of fixed station configuration, and the spreading factor of actual transmission channel and with reference to the relation of spreading factor, obtain the transmitting power relevant parameter of the actual use of channel.
The control unit of fixed station can reconfigure the transmitting power relevant parameter according to actual conditions.
The spreading factor of reference can adopt certain default value (as 16), is perhaps provided by signaling by fixed station.
The control unit of fixed station can be unified the transmitting power relevant parameter of configurating channel to multiple common signal channel; Can be to the transmitting power relevant parameter of configurating channel uniformly of all channels under the wireless connections.
Travelling carriage can and a fixed station between have a plurality of wireless connections, travelling carriage can and a plurality of fixed station between have a plurality of wireless connections.The identical information content of a plurality of wireless connections carryings that travelling carriage has simultaneously.These wireless connections are meant the minimal set of all channels of the business demand that is used at a time satisfying travelling carriage between a travelling carriage and the fixed station.The control unit of fixed station can be to the different channel set difference configuration of transmit power relevant parameter under the wireless connections.
In CDMA TDD system, the control unit of fixed station can be to the transmitting power relevant parameter of the channel difference configurating channel that is in different time-gap under the wireless connections.
The transmitter unit of fixed station, the transmitting power relevant parameter of the actual use of the channel that obtains can be used for the open Loop Power control of channel and can be used for the closed power control of channel.The transmitting power relevant parameter of the actual use of the channel that travelling carriage obtains can be used for the open Loop Power control of channel and can be used for the closed power control of channel.
Claims (10)
1. the method for the transmitting power of a configurating channel in wireless communication system is characterized in that may further comprise the steps:
A. the control unit of fixed station is a benchmark with the spreading factor of reference, the transmitting power relevant parameter of configurating channel;
B. fixed station or travelling carriage are according to the relation between the spreading factor of the actual spreading factor of channel and reference, calculate and obtain adjustment amount, and on the channel transmitting power relevant parameter basis of steps A configuration, increase this adjustment amount, obtain the transmitting power relevant parameter of the actual use of channel;
C. fixed station or travelling carriage carry out open loop or closed power control according to the transmitting power relevant parameter of the actual use of channel.
2. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that: the channel transmitting power relevant parameter that disposes in the described steps A, for the channel of travelling carriage emission, comprise the received power of fixed station expectation or the maximal received power of fixed station expectation; Channel for the fixed station emission comprises fixed station down channel transmitting power, the Initial Trans of channel, the maximum transmitting power that allows and the minimum transmitting power that allows.
3. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that described steps A further comprises:, be an identical transmitting power relevant parameter of this channel group of baseline configuration with the spreading factor of a reference to one group of channel by identical services quality requirement set; To the channel group of different business quality requirement set, be the different transmitting power relevant parameter of each channel group of baseline configuration with the spreading factor of a reference.
4. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that described steps A further comprises: in TDD radio communication system, to a channel that is in different time-gap, be the different transmitting power relevant parameter of each this channel of time slot of baseline configuration with the spreading factor of a reference.
5. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that described steps A further comprises: to different types of common signal channel, spreading factor with a reference is a benchmark, the identical transmitting power relevant parameter of unified configuration.
6. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that described steps A further comprises: to all channels under the wireless connections, spreading factor with a reference is a benchmark, the identical transmitting power relevant parameter of unified configuration.
7. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that: the spreading factor of described reference is that the form with a default value is recorded in fixed station and the travelling carriage, perhaps by the control unit of fixed station by signaling fixed station and travelling carriage.
8. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that: described step B, described adjustment amount calculates according to S=10 * log (the actual spreading factor of the spreading factor/channel of reference), and unit is dB.
9. according to claim 8 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that: the spreading factor of described reference is 16.
10. according to claim 1 a kind of in wireless communication system the method for the transmitting power of configurating channel, it is characterized in that: described step C, fixed station or travelling carriage for the emission common signal channel, carry out open Loop Power control with the actual transmitting power relevant parameter that uses; For the emission dedicated channel, carry out open Loop Power control with the actual transmitting power relevant parameter that uses earlier, and keep this transmitting power relevant parameter, after receiving power control command, change closed power control over to.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007098675A1 (en) * | 2006-02-28 | 2007-09-07 | Zte Corporation | Method for updating the power control parameter and the transmitting power of the high speed share information channel |
| CN101083491B (en) * | 2006-05-29 | 2010-09-29 | 中兴通讯股份有限公司 | Method for realizing power control of high speed sharing information channel |
| CN101646228B (en) * | 2009-09-11 | 2012-11-07 | 上海华为技术有限公司 | Method and device for power control |
| CN101447810B (en) * | 2007-11-26 | 2013-09-11 | 华为技术有限公司 | Method for controlling power and equipment thereof |
| CN103874181A (en) * | 2012-12-10 | 2014-06-18 | 中国移动通信集团设计院有限公司 | Method and device for distributing downlink channel for terminal |
| CN108259149A (en) * | 2016-12-29 | 2018-07-06 | 华为技术有限公司 | The method of transmission/reception reference signal and terminal device, the network equipment |
-
2003
- 2003-04-07 CN CN 03109256 patent/CN1278569C/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007098675A1 (en) * | 2006-02-28 | 2007-09-07 | Zte Corporation | Method for updating the power control parameter and the transmitting power of the high speed share information channel |
| CN101083491B (en) * | 2006-05-29 | 2010-09-29 | 中兴通讯股份有限公司 | Method for realizing power control of high speed sharing information channel |
| CN101447810B (en) * | 2007-11-26 | 2013-09-11 | 华为技术有限公司 | Method for controlling power and equipment thereof |
| CN101646228B (en) * | 2009-09-11 | 2012-11-07 | 上海华为技术有限公司 | Method and device for power control |
| CN103874181A (en) * | 2012-12-10 | 2014-06-18 | 中国移动通信集团设计院有限公司 | Method and device for distributing downlink channel for terminal |
| CN103874181B (en) * | 2012-12-10 | 2017-05-31 | 中国移动通信集团设计院有限公司 | A kind of is the method and apparatus of terminal distribution down channel |
| CN108259149A (en) * | 2016-12-29 | 2018-07-06 | 华为技术有限公司 | The method of transmission/reception reference signal and terminal device, the network equipment |
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| CN1278569C (en) | 2006-10-04 |
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