CN100531002C - Method for sending information and method and apparatus for receiving information - Google Patents
Method for sending information and method and apparatus for receiving information Download PDFInfo
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- CN100531002C CN100531002C CNB2005101197959A CN200510119795A CN100531002C CN 100531002 C CN100531002 C CN 100531002C CN B2005101197959 A CNB2005101197959 A CN B2005101197959A CN 200510119795 A CN200510119795 A CN 200510119795A CN 100531002 C CN100531002 C CN 100531002C
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Abstract
This invention discloses a method for sending and receiving information and a device, in which, said device includes: a channel estimation unit, a channel correcting unit, a demodulation and information hard decision unit, a channel obtaining unit and a time slot delay unit, the method for sending information includes: designing an up power control unit including the pilot information of the first K time slots and the control information including power control order words of the latter time slots L and the K and L are positive integrals and the sending end sends the up power control information unit, the method for receiving information includes: the pilot information of the first K time slots of the receiving end carries out channel estimation, channel correction to the current time slot control information, demodulation and hard decision to get the actual control information and channel information of the current time slot then carrying out channel estimation based on the acquired channel information after delaying for a time slot.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to based on the method for the transmission uplink power control information of coherent detection and based on the method and apparatus of the reception uplink power control information of coherent detection.
Background technology
In cellular system, fast power control is a key factor that improves QoS.In order to realize fast power control, the uplink power control information that cellular system sent comprises: pilot frequency information Pilot and the control information that comprises power control command word TPC.Wherein, the TPC in the control information is used for carrying the power control command that terminal sends to the base station, and, also comprising except that TPC other some control informations in the control information sometimes, control information is the effective information in the uplink power control information that is sent; Pilot frequency information Pilot is used for coherent detection power control command word TPC, and the quality of carrying out ascending control channel estimates and synchronous etc. that Pilot is made up of transmit leg and the fixed signal of recipient.
Fig. 1 is the schematic diagram of the uplink power control information that sends of prior art.Referring to Fig. 1, the uplink power control information that prior art sent is unit with the time slot, and each time slot is divided into pilot frequency information Pilot, TPC territory and some optionally other control informations.Wherein, in order to carry out channel estimating exactly, pilot frequency information Pilot has taken most bits in time slot, such as, comprise 10 bits in the time slot of uplink power control information correspondence, so, pilot frequency information Pilot takies 6 bits usually in time slot.In addition, when sending uplink power control information, what prior art adopted is the mode that sends continuously, that is to say, all sends uplink power control information one time at each time slot.
By above description as can be seen, in the uplink power control information that is sent, realize that the effective information of fast power control is mainly the TPC territory, the function of pilot frequency information Pilot is just carried out channel estimating and is not the effective information of realizing fast power control.But in the prior art, pilot frequency information Pilot has but taken a large amount of bit in the uplink power control information, makes actual effective information TPC territory can only take less bit.Like this,, then need transmitting terminal to adopt higher transmitting power to send uplink power control information, thereby increased the self-interference of system, reduced the capacity of system in order to satisfy the specific TPC error performance requirement of system.In addition, in the prior art, the cycle of power control is fixed as time slot, they they be that transmitting terminal sends uplink power control information continuously, and receiving terminal is under some specific application scenarioss, such as under the mobile application scenarios at a slow speed, do not need to receive continuously this uplink power control information, therefore, waste the transmission resource of system, reduced the performance of system.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that sends information, another object of the present invention is to provide a kind of method and apparatus that receives information, so that reduce uplink power control information emission power.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method that sends information, this method comprises:
A, set in advance the uplink power control information unit, in this uplink power control information unit, a preceding K time slot is a pilot frequency information, and a back L time slot is the control information that comprises power control command word, and wherein, K and L are positive integer;
B, transmitting terminal send to receiving terminal with the uplink power control information unit that sets in advance.
In steps A, estimate to detect the value that performance demands is determined the number of time slots K of described pilot frequency information according to system channel.
In steps A, determine the value of the number of time slots L of described control information according to the power control command word performance requirement of system.
In steps A, only comprise power control command word in each time slot of described L time slot control information.
In steps A, comprise power control command word and other control information in each time slot of described L time slot control information, this power control command word and other control information shared bit number in each time slot is determined according to the power control requirement of system.
Described step B comprises: transmitting terminal requires set uplink power control information unit is sent to receiving terminal according to power control, comprising:
When power control required to the raising downlink transmission power, the value of power control command word was set to identify the bit symbol that improves transmitted power in the transmitting terminal uplink power control information unit, then this uplink power control information unit is sent to receiving terminal;
When power control required to the reduction downlink transmission power, the value of power control command word was set to identify the bit symbol that reduces transmitted power in the transmitting terminal uplink power control information unit, then this uplink power control information unit is sent to receiving terminal.
Described step B comprises: transmitting terminal sends to receiving terminal in the mode of continuous transmission with set uplink power control information unit.
Described step B comprises: transmitting terminal sends one or more uplink power control information units to receiving terminal every the time slot of fixed number.
After step B, further comprise:
The pilot frequency information of K time slot before C1, receiving terminal receive in the uplink power control information unit carries out channel estimating according to the pilot frequency information of this preceding K time slot;
C2, receiving terminal carry out channel rotation correction according to the current channel estimation results that obtains to the control information from the current time slots of wireless transmission channel, and sentence the working control information that reason is obtained the current time slots that transmitting terminal sends firmly by the control information behind the channel rotation correction being separated mediation;
C3, receiving terminal are according to obtaining channel information from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots obtained; After putting off a time slot, receiving terminal carries out channel estimating according to the channel information that is obtained, and returns step C2, the control information of all time slots in obtaining this uplink power control information unit that receives.
In step C3, the step that described receiving terminal obtains channel information comprises: receiving terminal obtains channel information by multiplying each other from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots of being obtained.
A kind of method that receives information, this method comprises:
The pilot frequency information of K time slot before a, receiving terminal receive in the uplink power control information unit carries out channel estimating according to the pilot frequency information of this preceding K time slot;
B, receiving terminal carry out channel rotation correction according to the current channel estimation results that obtains to the control information from the current time slots of wireless transmission channel, and sentence the working control information that reason is obtained the current time slots that transmitting terminal sends firmly by the control information behind the channel rotation correction being separated mediation;
C, receiving terminal are according to obtaining channel information from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots obtained; After putting off a time slot, carry out channel estimating according to the channel information that is obtained, return step b, the control information of all time slots in obtaining this uplink power control information unit that receives.
The step that described receiving terminal carries out channel estimating comprises: receiving terminal is estimated the phase deviation that wireless transmission channel produces;
In step b, the step that described receiving terminal carries out channel rotation correction comprises: receiving terminal carries out phase compensation according to the estimated phase deviation that goes out to the control information from the current time slots of wireless transmission channel.
In step c, the step that described receiving terminal obtains channel information comprises: receiving terminal obtains channel information by multiplying each other from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots of being obtained.
Described receiving terminal receives continuously according to send mode that transmitting terminal adopted or receives the uplink power control information unit every the time slot of fixed number.
A kind of device that receives information, this device comprises: channel estimating unit, channel rotation correction unit, separates mediation information and declares unit, channel acquiring unit and time-slot delay unit firmly, wherein,
Channel estimating unit, be used for receiving pilot frequency information from K time slot before the uplink power control information unit of wireless transmission channel, pilot frequency information according to this preceding K time slot carries out channel estimating, and export the channel estimation results of gained to the channel rotation correction unit, and, the channel information that channel estimating unit is sent according to the time-slot delay unit carries out channel estimating, and exports the channel estimation results of gained to the channel rotation correction unit;
The channel rotation correction unit, be used for receiving control information from the uplink power control information unit current time slots of wireless transmission channel, and channel rotation correction is carried out in the control information in the received current time slots, and the control information of the current time slots behind the channel rotation correction is sent to separates mediation information and declare the unit firmly according to the current channel estimation results of sending of channel estimating unit;
Separate mediation information and declare the unit firmly, sentence the working control information that reason is obtained the current time slots that transmitting terminal sends firmly by the control information of the current time slots behind the channel rotation correction being separated mediation, and export the working control information of the current time slots obtained to the channel acquiring unit;
The channel acquiring unit, be used for receiving control information from the uplink power control information unit current time slots of wireless transmission channel, and according to this from the control information of the current time slots of wireless transmission channel with separate mediation information and declare the working control information of the current time slots of sending the unit firmly and obtain channel information, export the channel information that is obtained to the time-slot delay unit;
The time-slot delay unit is used for the channel information that the receive channel acquiring unit is sent, and exports this channel information to channel estimating unit after putting off a time slot.
Described channel acquiring unit is the equipment with multiplier function, this have multiplier function equipment will from the control information of the current time slots of wireless transmission channel with separate mediation information and declare the working control information of the current time slots of sending the unit firmly and multiply each other, the result of the gained that will multiply each other is as channel information.
Described channel estimating unit comprises that the phase deviation that wireless transmission channel is produced carries out estimated channel and estimate to handle;
Described channel rotation correction unit comprises the channel rotation correction processing of phase compensation.
Described channel estimating unit, channel rotation correction unit and channel acquiring unit receive continuously according to the send mode that transmitting terminal adopted or carry out described receiving course every the time slot of fixed number.
This shows, in the present invention, owing to set in advance the form of uplink power control information unit is the individual control information that comprises TPC of a continuous slot pilot frequency information and continuous slot, like this, the shared bit number of TPC is just many in a uplink power control information unit, when satisfying a specific TPC error rate, transmitting terminal just can adopt lower transmitted power to send the uplink power control information unit, therefore, reduce the self-interference of system, increased the capacity of system.In addition, in the present invention, transmitting terminal can send the uplink power control information unit at interval according to the concrete power control demand cycle ground of system, therefore, has saved the transmission resources of system, has optimized the performance of system.
Description of drawings
Fig. 1 is the schematic diagram of the uplink power control information that sends of prior art.
Fig. 2 is the structural representation of information receiving device proposed by the invention.
Fig. 3 is the flow chart that sends the uplink power control information unit in embodiments of the present invention.
Fig. 4 is the schematic diagram of set in the present invention uplink power control information unit.
Fig. 5 is the flow chart that receives the uplink power control information unit in embodiments of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.
In order to reduce the power that sends uplink power control information, the present invention proposes a kind of method that sends information, its core concept is: the uplink power control information unit is set, the pilot frequency information Pilot of K time slot before this uplink power control information unit comprises, and the control information that comprises the TPC territory of L the time slot in back, wherein, K and L are positive integer; Transmitting terminal is sent to receiving terminal with set uplink power control information unit.
The method of the transmission information that proposes at the present invention, the present invention has correspondingly also proposed a kind of method that receives information, its core concept is: the pilot frequency information of K time slot before receiving terminal receives in the uplink power control information unit, carry out channel estimating according to the pilot frequency information of this preceding K time slot; Receiving terminal carries out channel rotation correction according to the current channel estimation results that obtains to the control information from the current time slots of wireless transmission channel, and mediation is separated in the control information behind the channel rotation correction sentence the working control information that reason is obtained the current time slots that transmitting terminal sends firmly; Receiving terminal is according to obtaining channel information from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots obtained; After putting off a time slot, carry out channel estimating according to the channel information that is obtained, turn to execution according to the current channel estimation results that obtains to carry out the process of channel rotation correction, the control information of all time slots in obtaining this uplink power control information unit that receives from the control information of the current time slots of wireless transmission channel.
Wherein, receiving terminal can multiply each other the working control information from the control information of the current time slots of wireless transmission channel and the current time slots obtained to handle and obtain channel information.
Fig. 2 is the structural representation of information receiving device proposed by the invention.Referring to Fig. 2, the method of the transmission information that proposes at the present invention, the present invention proposes a kind of device that receives information, this device comprises: channel estimating unit 201, channel rotation correction unit 202, separate mediation information and declare unit 203 firmly, channel acquiring unit 204 and time-slot delay unit 205, wherein, separating mediation information declares unit 203 firmly and directly links to each other with channel acquiring unit 204 with channel rotation correction unit 202, time-slot delay unit 205 directly links to each other with channel estimating unit 201 with channel acquiring unit 204, channel rotation correction unit 202 also directly links to each other with channel estimating unit 201, and
Channel rotation correction unit 202, be used for receiving control information from the uplink power control information unit current time slots of wireless transmission channel, and channel rotation correction is carried out in the control information in the received current time slots, and the control information behind the channel rotation correction is sent to separates mediation information and declare unit 203 firmly according to the channel estimating unit 201 current channel estimation results that obtain and send;
Separate mediation information and declare unit 203 firmly, the working control information that the current time slots of reason to obtain transmitting terminal and sent sentenced in mediation is firmly separated in the control information of the current time slots after being used for channel rotation correction handled, and exports the working control information of the current time slots obtained to channel acquiring unit 204;
Time-slot delay unit 205 is used for the channel information that receive channel acquiring unit 204 is sent, and exports received channel information to channel estimating unit 201 after putting off a time slot.
In apparatus of the present invention, described channel acquiring unit 204 can be the equipment with multiplier function.When specific implementation, this have multiplier function equipment will from the control information of the current time slots of wireless transmission channel with separate mediation information and declare the working control information of the current time slots of sending unit 203 firmly and multiply each other, the result of the gained that will multiply each other is retrieved as channel information.
Fig. 3 is the flow chart that sends the uplink power control information unit in embodiments of the present invention.Referring to Fig. 3, send the employed transmitting power of uplink power control information unit in order to reduce transmitting terminal, the process of transmission uplink power control information unit proposed by the invention specifically may further comprise the steps:
Step 301: set in advance the uplink power control information unit.
Here, Fig. 4 is the schematic diagram of set in the present invention uplink power control information unit.Referring to Fig. 4, the set uplink power control information unit of the present invention comprises: the pilot frequency information Pilot of a preceding K time slot, K are positive integer; The control information of a back L time slot, L is a positive integer, and each time slot in the L time slot comprises the TPC territory.According to the requirement of system, each time slot in the L time slot can further include other control information except that power control command word TPC territory further.
In the present invention, the concrete value of pilot frequency information Pilot shared number of time slots K in the uplink power control information unit can detect performance demands according to channel estimating and determine, such as, it is higher that channel estimating detects performance demands, what then the value of K can be provided with is bigger, to detect performance demands lower when channel estimating, and what then the value of K can be provided with is less.The concrete value of control information shared number of time slots L in the uplink power control information unit can be determined according to the TPC performance requirement of system, such as, when system allows the higher TPC error rate, what then the value of L can be provided with is less, when system allowed the lower TPC error rate, what then the value of L can be provided with was bigger.In addition, requirement according to system, if the control information in the uplink power control information unit includes only the TPC territory, then the bit of each time slot in L time slot is TPC, if the control information in the uplink power control information unit removes and to comprise that TPC is overseas and also comprise other control information, then comprise other control information of the TPC and T the bit of S bit in each time slot of L time slot, and the concrete value of S and T requires to determine according to the concrete power control of system.
Step 302: when needs sent the uplink power control information unit, transmitting terminal required to send the uplink power control information unit according to power control.
Here, if power control requires to improving downlink transmission power, promptly power control commands is " 1 ", so, the value in the TPC territory in the uplink power control information unit that transmitting terminal sets in advance is set to identify the bit symbol that improves transmitted power, such as send S individual 1 at the TPC bit; If power control requires to reducing downlink transmission power, be that power control commands is " 1 ", so, the value in the TPC territory in the uplink power control information unit that transmitting terminal sets in advance is set to identify the bit symbol that reduces transmitted power, such as sending S " 1 " at the TPC bit.
Need to prove, in this step, the send mode that transmitting terminal is adopted when sending set uplink power control information unit can be continuous transmission, that is to say, when the control information of pilot frequency information Pilot that sends K time slot and L time slot, transmitting terminal sends the control information of the pilot frequency information Pilot and L the time slot of K time slot immediately again.
In addition, owing to need not to receive the uplink power control information unit, some particular time-slots in system carry out power control, therefore, in this step, the send mode that transmitting terminal is adopted when sending set uplink power control information unit can also be periodically to send at interval, be that transmitting terminal is after sending one or more uplink power control information units, in preestablishing the time slot of number, stop to send, then, send the uplink power control information unit later again at this time slot that preestablishes number.Such as, power control requirement according to system side, after receiving a TPC in the uplink power control information unit, in 5 time slots, no longer need the TPC in the uplink power control information unit, like this, in this step, after transmitting terminal sends a uplink power control information unit, in 5 time slots, stop to send, then, after these 5 time slots, transmitting terminal continues to send the uplink power control information unit.
From above-mentioned flow process shown in Figure 3 as can be seen, in the present invention, owing to set in advance the form of uplink power control information unit is the individual control information that comprises TPC of a continuous slot pilot frequency information and continuous slot, like this, the shared bit number of TPC is just many in a uplink power control information unit, when satisfying a specific TPC error rate, transmitting terminal just can adopt lower transmitted power to send the uplink power control information unit, therefore, reduce the self-interference of system, increased the capacity of system.
Fig. 5 is the flow chart that receives the uplink power control information unit in embodiments of the present invention.Referring to Fig. 2 and Fig. 5, utilize apparatus of the present invention, at the method for transmission uplink power control information unit of the present invention, the process that the present invention receives the uplink power control information unit specifically may further comprise the steps:
Step 501: when needs receive the uplink power control information unit, channel estimating unit 201 receives the pilot frequency information Pilot from preceding K time slot in the uplink power control information unit of wireless transmission channel, pilot frequency information Pilot according to this preceding K time slot carries out channel estimating, and exports the channel estimation results of gained to channel rotation correction unit 202.
Here, the process of carrying out channel estimating according to pilot frequency information Pilot is a prior art, no longer describes herein.In addition, channel estimating unit 201 channel estimating of carrying out can be exemplified as and estimate phase deviation that wireless transmission channel produced etc.
Need to prove, in the present invention, if transmitting terminal is transmission continuously to the send mode that the uplink power control information unit adopted, then in this flow process, receiving terminal is that channel estimating unit 201, channel rotation correction unit 202 and channel acquiring unit 204 correspondingly are to receive the uplink power control information unit continuously.If the send mode that transmitting terminal adopts is for periodically sending at interval, then in this flow process, receiving terminal is that channel estimating unit 201, channel rotation correction unit 202 and channel acquiring unit 204 correspondingly are that periodic intervals ground receives the uplink power control information unit, such as, transmitting terminal sends a uplink power control information unit every 3 time slots, then in this flow process, receiving terminal is that channel estimating unit 201, channel rotation correction unit 202 and channel acquiring unit 204 receive a uplink power control information unit every 3 time slots.
After executing this step, receiving distolateral pairing current time slots then is K+1 time slot.
Step 502: the control information that channel rotation correction unit 202 and channel acquiring unit 204 receive from current time slots in the uplink power control information unit of wireless transmission channel.
Here, need to prove, comprise the TPC territory in the received control information of channel rotation correction unit 202 and channel acquiring unit 204, but this comprises that the control information in TPC territory is through the control information after the wireless transmission channel distortion, such as, phase deviation etc. has taken place, and has been not the control information of the reality that sends of transmitting terminal.
Step 503: channel rotation correction unit 202 carries out channel rotation correction according to the channel estimating unit 201 current channel estimation results of sending to the control information of received current time slots, and the control information of the current time slots behind the channel rotation correction is sent to separates mediation information and declare unit 203 firmly.
Here, channel rotation correction unit 202 carried out channel rotation correction is handled to be exemplified as and the control information of current time slots is carried out that phase place is replenished etc.
Step 504: separate mediation information and declare the control information of the current time slots behind the 203 pairs of channel rotation corrections in unit firmly and separate mediation and sentence reason firmly, obtain the working control information of the current time slots that transmitting terminal sends, the working control information with the current time slots obtained exports other unit of receiving terminal to and exports channel acquiring unit 204 to then.
Step 505: channel acquiring unit 204 is according to the control information of the current time slots after wireless channel transmission distortion received in step 502 and separate mediation information and declare the working control information of the current time slots of sending unit 203 firmly and obtain channel information, and exports the channel information that is obtained to time-slot delay unit 205.
Here, channel acquiring unit 204 can also further be sent to the channel information that is obtained other unit of receiving terminal, such as, lock unit or signal-to-noise ratio (SNR) estimation unit etc. are as the subsequent treatment of receiving terminal.
Need to prove, if channel acquiring unit 204 is the equipment with multiplier function, then in this step, this channel acquiring unit 204 promptly has the equipment of multiplier function will and be separated mediation information and declare the working control information of the current time slots of sending unit 203 firmly and multiply each other through the control information of the current time slots after the wireless channel transmission distortion, and the result of the gained that will multiply each other is retrieved as channel information.
Step 506: time-slot delay unit 205 exports the channel information that receives to channel estimating unit 201 after putting off a time slot.
Carry out this step, receive distolateral pairing current time slots and then put off 1 time slot backward.
Step 507: the channel information that channel estimating unit 201 is sent according to time-slot delay unit 205 carries out channel estimating, and export the channel estimation results of gained to channel rotation correction unit 202, execution in step 502 once more, the control information of all time slots in obtaining this uplink power control information unit that receives.
The device of the method for transmission information proposed by the invention, the method that receives information and the information of reception is applicable to and need carries out in uplink power control and all cellular networks based on coherent detection.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1, a kind of method that sends information is characterized in that, this method comprises:
A, set in advance the uplink power control information unit, in this uplink power control information unit, a preceding K time slot is a pilot frequency information, and a back L time slot is the control information that comprises power control command word, and wherein, K and L are positive integer;
B, transmitting terminal send to receiving terminal with the uplink power control information unit that sets in advance.
2, method according to claim 1 is characterized in that, in steps A, estimates to detect the value that performance demands is determined the number of time slots K of described pilot frequency information according to system channel.
3, method according to claim 1 is characterized in that, in steps A, determines the value of the number of time slots L of described control information according to the power control command word performance requirement of system.
4, method according to claim 1 is characterized in that, in steps A, only comprises power control command word in each time slot of described L time slot control information.
5, method according to claim 1, it is characterized in that, in steps A, comprise power control command word and other control information in each time slot of described L time slot control information, this power control command word and other control information shared bit number in each time slot is determined according to the power control requirement of system.
6, method according to claim 1 is characterized in that, described step B comprises: transmitting terminal requires set uplink power control information unit is sent to receiving terminal according to power control, comprising:
When power control required to the raising downlink transmission power, the value of power control command word was set to identify the bit symbol that improves transmitted power in the transmitting terminal uplink power control information unit, then this uplink power control information unit is sent to receiving terminal;
When power control required to the reduction downlink transmission power, the value of power control command word was set to identify the bit symbol that reduces transmitted power in the transmitting terminal uplink power control information unit, then this uplink power control information unit is sent to receiving terminal.
7, method according to claim 1 is characterized in that, described step B comprises: transmitting terminal sends to receiving terminal in the mode of continuous transmission with set uplink power control information unit.
8, method according to claim 1 is characterized in that, described step B comprises: transmitting terminal sends one or more uplink power control information units to receiving terminal every the time slot of fixed number.
9, according to any described method in the claim 1 to 8, it is characterized in that, after step B, further comprise:
The pilot frequency information of K time slot before C1, receiving terminal receive in the uplink power control information unit carries out channel estimating according to the pilot frequency information of this preceding K time slot;
C2, receiving terminal carry out channel rotation correction according to the current channel estimation results that obtains to the control information from the current time slots of wireless transmission channel, and sentence the working control information that reason is obtained the current time slots that transmitting terminal sends firmly by the control information behind the channel rotation correction being separated mediation;
C3, receiving terminal are according to obtaining channel information from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots obtained; After putting off a time slot, receiving terminal carries out channel estimating according to the channel information that is obtained, and returns step C2, the control information of all time slots in obtaining this uplink power control information unit that receives.
10, method according to claim 9, it is characterized in that, in step C3, the step that described receiving terminal obtains channel information comprises: receiving terminal obtains channel information by multiplying each other from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots of being obtained.
11, a kind of method that receives information is characterized in that, this method comprises:
The pilot frequency information of K time slot before a, receiving terminal receive in the uplink power control information unit carries out channel estimating according to the pilot frequency information of this preceding K time slot;
B, receiving terminal carry out channel rotation correction according to the current channel estimation results that obtains to the control information from the current time slots of wireless transmission channel, and sentence the working control information that reason is obtained the current time slots that transmitting terminal sends firmly by the control information behind the channel rotation correction being separated mediation;
C, receiving terminal are according to obtaining channel information from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots obtained; After putting off a time slot, carry out channel estimating according to the channel information that is obtained, return step b, the control information of all time slots in obtaining this uplink power control information unit that receives.
12, method according to claim 11 is characterized in that, the step that described receiving terminal carries out channel estimating comprises: receiving terminal is estimated the phase deviation that wireless transmission channel produces;
In step b, the step that described receiving terminal carries out channel rotation correction comprises: receiving terminal carries out phase compensation according to the estimated phase deviation that goes out to the control information from the current time slots of wireless transmission channel.
13, according to claim 11 or 12 described methods, it is characterized in that, in step c, the step that described receiving terminal obtains channel information comprises: receiving terminal obtains channel information by multiplying each other from the working control information of the control information of the current time slots of wireless transmission channel and the current time slots of being obtained.
According to claim 11 or 12 described methods, it is characterized in that 14, described receiving terminal receives continuously according to send mode that transmitting terminal adopted or receives the uplink power control information unit every the time slot of fixed number.
15, a kind of device that receives information is characterized in that, this device comprises: channel estimating unit, channel rotation correction unit, separate mediation information and declare unit, channel acquiring unit and time-slot delay unit firmly, wherein,
Channel estimating unit, be used for receiving pilot frequency information from K time slot before the uplink power control information unit of wireless transmission channel, pilot frequency information according to this preceding K time slot carries out channel estimating, and export the channel estimation results of gained to the channel rotation correction unit, and, the channel information that channel estimating unit is sent according to the time-slot delay unit carries out channel estimating, and exports the channel estimation results of gained to the channel rotation correction unit;
The channel rotation correction unit, be used for receiving control information from the uplink power control information unit current time slots of wireless transmission channel, and channel rotation correction is carried out in the control information in the received current time slots, and the control information of the current time slots behind the channel rotation correction is sent to separates mediation information and declare the unit firmly according to the current channel estimation results of sending of channel estimating unit;
Separate mediation information and declare the unit firmly, sentence the working control information that reason is obtained the current time slots that transmitting terminal sends firmly by the control information of the current time slots behind the channel rotation correction being separated mediation, and export the working control information of the current time slots obtained to the channel acquiring unit;
The channel acquiring unit, be used for receiving control information from the uplink power control information unit current time slots of wireless transmission channel, and according to this from the control information of the current time slots of wireless transmission channel with separate mediation information and declare the working control information of the current time slots of sending the unit firmly and obtain channel information, export the channel information that is obtained to the time-slot delay unit;
The time-slot delay unit is used for the channel information that the receive channel acquiring unit is sent, and exports this channel information to channel estimating unit after putting off a time slot.
16, device according to claim 15, it is characterized in that, described channel acquiring unit is the equipment with multiplier function, this have multiplier function equipment will from the control information of the current time slots of wireless transmission channel with separate mediation information and declare the working control information of the current time slots of sending the unit firmly and multiply each other, the result of the gained that will multiply each other is as channel information.
According to claim 15 or 16 described devices, it is characterized in that 17, described channel estimating unit comprises that the phase deviation that wireless transmission channel is produced carries out estimated channel and estimate to handle;
Described channel rotation correction unit comprises the channel rotation correction processing of phase compensation.
18, according to claim 15 or 16 described devices, it is characterized in that described channel estimating unit, channel rotation correction unit and channel acquiring unit receive continuously according to the send mode that transmitting terminal adopted or carry out described receiving course every the time slot of fixed number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101197959A CN100531002C (en) | 2005-11-07 | 2005-11-07 | Method for sending information and method and apparatus for receiving information |
Applications Claiming Priority (1)
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| KR101557676B1 (en) | 2008-10-31 | 2015-10-06 | 삼성전자주식회사 | Device and method for controlling downlink control information in wireless communication system |
| US9654274B2 (en) * | 2012-11-09 | 2017-05-16 | Telefonaktiebolaget L M Ericsson (Publ) | Systems and methods for mitigating self-interference |
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