CN101489184B - Method, apparatus and system for differentiating intra-district sub-frame state - Google Patents
Method, apparatus and system for differentiating intra-district sub-frame state Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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Abstract
An embodiment of the invention provides a method for differentiating state of sub-frame in the cell, a device and a system thereof. The invention relates to the technical field of communication for correctly differentiating each state of sub-frame in the cell by the user. The method of the invention comprises the following steps: setting or storing the transmission parameter of specific sub-frame; and adding state indicator for the specific sub-frame. The embodiment of the invention can correctly identify various states of sub-frame in the cell thereby the user device can correctly execute operations of demodulating, measuring, etc. for various sub-frames.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, device and system of differentiating intra-district sub-frame state.
Background technology
The third generation was organized the partner to plan (3GPP, Third Generation Partnership Projects) to have started the third generation (3G, 3rd Generati on) Long Term Evolution research project (LTE, LongTerm Evolution) in 2005.The LTE technological improvement has also strengthened the aerial access technology of 3G, adopts OFDM and the MIMO sole criterion as its wireless network evolution, has improved the performance of Cell Edge User equipment, improves cell capacity and reduces system delay.
In the LTE system, the downlink communication business can be divided into two big classes: unicast service (Unicast service) and multimedia broadcast-multicast service (MBMS, Multimedia Broadcast Multicast Service).Unicast service is by the business of a data source to the point-to-point of subscriber equipment transmission data, and the MBMS business is meant the point-to-multipoint service that is sent data by a data source to a plurality of subscriber equipmenies.In wireless access network, MBMS is professional can to realize the classes of messages multicast and the broadcasting of plain text low rate by using the carrying of Common transport channel and public wireless, also can realize the multicast and the broadcasting of the multimedia service of higher rate (256kbps).Thereby, the introducing of MBMS business, for realizing network (comprising core net and Access Network) resource-sharing, with the least possible resource, realization provides convenience to the service of the media user equipment of same requirements as much as possible.
At present, for the MBMS business, two kinds of transmission meanss are arranged: a kind of is single cell transmission mode (Single-cell transmission), and another kind is many cell transmission (Multi-celltransmission) modes.Single cell transmission mode is meant that single subdistrict sends the mode of MBMS business; And many cell transmission (Multi-cell transmission) mode is meant, a plurality of sub-districts are simultaneously with the mode that sends the MBMS business frequently with content, also promptly frequently net SFN (Single Rrequency Network) mode together, the zone of forming with one group of sub-district of content transmission MBMS business frequently together is called with frequency web area SFA (SFNArea) simultaneously.
The MBMS business can use same carrier wave to transmit with unicast service jointly, also can independently use one independently carrier wave transmit.MBMS is professional to use the pattern that identical carrier wave transmits to be called MC (Mixed Carrier with unicast service, mixed carrier) pattern, MBMS is professional to use independently the pattern that a carrier wave transmits to be called DC (Dedicated Carrier, special carrier) pattern.
Under the situation of MC pattern, unicast service, the MBMS business that sends in single cell transmission mode and MBMS business (MBSFN business) time division multiplexing that sends in the SFN mode.According to the decision of 3GPP meeting, these two kinds of business are that subframe (subframe) level is time-multiplexed, i.e. a subframe or be used for unicast service and the professional transmission of the MBMS of single cell transmission mode, or be used for the professional transmission of MBSFN.The subframe that is used for the transmission of unicast service and uni-cell MBMS business is called unicast sub, and the subframe that is used for the professional transmission of MBSFN is called MBSFN subframe (multimedia broadcasting is with frequency net frame).
Simultaneously, in 3GPP36.300, stipulate, in the SFA zone or in the SFA region adjacent sub-district, exist to keep sub-district (reserved cell).Keep the transmission that the sub-district does not participate in the MBSFN in the corresponding SFA, but allow it to send on the running time-frequency resource of MBSFN business in corresponding SFA zone, send other business with limited power, for example unicast traffic is given the subscriber equipment of center of housing estate.But keep the sub-district is not all to be to keep the sub-district forever, and it only just can be as keeping the sub-district on the subframe of corresponding SFA zone transmission MBSFN business.These subframes that keep the sub-district can be called clean culture low-power subframe.
As shown in Figure 1, in the LTE system, a radio frames (radio frame) comprises 10 subframes (subframe), and each subframe is divided into 2 time slots (slot); And each time slot wherein comprises several OFDM (OFDM) symbols (symbol).A subframe lengths is 1ms, can comprise 12 or 14 OFDM symbols.
For unicast sub, the schematic diagram of its frame structure as shown in Figure 2.As seen from Figure 2, PCFICH channel (Physical Control Format Indicator Channel) is totally 2 bits, one of four states.Three states wherein are used to identify the shared symbol numbers of down control channel, and wherein down control channel can take 1-3 symbol.Down control channel in the unicast sub comprises line correlation signaling (ACK/NACK to the upstream data bag replys, uplink scheduling signaling, and to the power control commands of ascending control channel etc.) and following line correlation signaling (descending scheduling signaling etc.).Be that a unicast sub comprises 14 OFDM symbols among Fig. 2, down control channel takies the schematic diagram of the frame structure of 2 symbols.
And for the structure that has the MBSFN subframe now, its frame structure as shown in Figure 3.As seen from Figure 3, wherein PMCH channel (physics multicast and broadcast channel) and MBSFN reference signal are transmitted in the MBSFN mode, and remainder transmits with mode of unicast.Down control channel in the MBSFN subframe includes only line correlation signaling (ACK/NACK to the upstream data bag replys, uplink scheduling signaling, and to the power control commands of ascending control channel etc.) usually.Fig. 3 is that a MBSFN subframe comprises 12 OFDM symbols, and down control channel takies the schematic diagram of the frame structure of 2 symbols.
The frame structure of clean culture low-power subframe, identical with the frame structure of described unicast sub, be transmit power limited.
According to top description as can be known, the subframe in sub-district can have three kinds of different states, i.e. unicast sub, MBSFN subframe and clean culture low-power subframe.The state of each subframe in the sub-district need be known in the base station, finishes the relevant operation of operation, especially power controls such as demodulation, measurement to help subscriber equipment.According to the regulation of 3GPP meeting, can utilize high-level signaling to come MBSFN subframe and unicast sub in the identifying cells.
But in realizing process of the present invention, the inventor finds that there are the following problems in the prior art: owing to keep the appearance of sub-district, make clean culture low-power subframe also become a kind of state in the subframe in the sub-district.But,, utilize the existence of clean culture low-power subframe in the subframe that described high-level signaling can not identifying cells according to the regulation of 3GPP meeting.Like this, subscriber equipment just can accurately not known the distribution situation of each subframe in the subframe sub-district in, just can't correctly realize the operation that operation, especially power controls such as demodulation, measurement to each subframe are correlated with.
Summary of the invention
On the one hand, embodiments of the invention provide the method for subframe state in a kind of identifying cells, with various types of subframes in the correct identifying cells.
The method of subframe state in a kind of identifying cells of embodiments of the invention, by the following technical solutions:
The method of subframe state in a kind of identifying cells, described method comprises the steps:
Set or the storage transmission parameter of specific sub-frame;
Be that described specific sub-frame adds status indicator, comprise: utilize the bit value of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe, identifying this subframe is specific sub-frame.
Utilize embodiments of the invention, can add sign, be specific sub-frame by the described subframe of this sign expression, and transmit described specific sub-frame according to described transmission parameter for specific sub-frame.Thereby, avoided can't identifying with high-level signaling in the prior art defective of three kinds of states of subframe.Utilize the method for subframe state in the described identifying cells of the embodiment of the invention, correctly various types of subframes in the identifying cells.
Second aspect, embodiments of the invention provide the device of subframe state in a kind of identifying cells, with various types of subframes in the correct identifying cells.
The device of subframe state is by the following technical solutions in the described identifying cells of the embodiment of the invention:
The device of subframe state comprises in a kind of identifying cells:
The unit is set, is used for setting or the storage transmission parameter of specific sub-frame;
The sign adding device is used to described specific sub-frame to add status indicator, comprising: utilize the bit value of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe, identifying this subframe is specific sub-frame.
So, utilize the described device of the embodiment of the invention, the status indicator that utilizes the sign adding device to add for specific sub-frame, and according to the transmission parameter transmission specific sub-frame of setting or storing in the unit is set.Thereby, avoided can't identifying with high-level signaling in the prior art defective of three kinds of states of subframe.Utilize the device of subframe state in the described identifying cells of the embodiment of the invention, correctly various types of subframes in the identifying cells.
The third aspect, embodiments of the invention provide a kind of method of discerning subframe state in the sub-district, so that the various subframes in the distinguishing cell that subscriber equipment can be correct.
A kind of method of discerning subframe state in the sub-district, described method comprises the steps:
Read the status indicator that bit value reacted of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe of reception;
When described status indicator shows that described subframe is specific sub-frame, be used for described specific sub-frame being handled according to transmission parameter that receive or storage.
So, utilize the described method of the embodiment of the invention, status indicator in the Physical Control Format Indicator Channel that utilization is read, distinguish specific sub-frame, and, described specific sub-frame is handled the correct transmission parameter that obtains this subframe according to transmission parameter of specific sub-frame that set or storage, thereby subscriber equipment can carry out operations such as demodulation, measurement accurately to the subframe in the sub-district of receiving.
Fourth aspect, embodiments of the invention provide a kind of device of discerning subframe state in the sub-district, so that the various subframes in the distinguishing cell that subscriber equipment can be correct.
A kind of device of discerning subframe state in the sub-district comprises:
Reading unit is used for reading the status indicator that bit value reacted of Physical Control Format Indicator Channel idle condition correspondence of the described subframe of reception;
Processing unit when described status indicator shows that described subframe is specific sub-frame, is used for according to transmission parameter that receive or storage described specific sub-frame being handled.
So, utilize the described device of the embodiment of the invention, utilize the status indicator in the Physical Control Format Indicator Channel that reading unit reads, distinguish specific sub-frame, and, described specific sub-frame is handled the correct transmission parameter that obtains this subframe according to transmission parameter of specific sub-frame that set or storage, thereby subscriber equipment can carry out operations such as demodulation, measurement accurately to the subframe in the sub-district of receiving.
The 5th aspect, embodiments of the invention provide a kind of system of differentiating intra-district sub-frame state, so that the various subframes in the distinguishing cell that subscriber equipment can be correct.
A kind of system of differentiating intra-district sub-frame state comprises:
Base station unit is used for setting or the storage transmission parameter of specific sub-frame, for described specific sub-frame is added status indicator, and sends described specific sub-frame; Wherein, utilize the bit value of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe, identifying this subframe is specific sub-frame;
Subscriber equipment is used for reading the status indicator that bit value reacted of the Physical Control Format Indicator Channel idle condition correspondence of described subframe; If described status indicator shows that described subframe is a specific sub-frame, then, described subframe is handled according to transmission parameter of specific sub-frame that receive or storage.
Utilizing the described system of the embodiment of the invention, is that specific sub-frame is added sign by base station unit at first, and subscriber equipment can judge whether described subframe is specific sub-frame by the status indicator in the Physical Control Format Indicator Channel that reads subframe so.Like this, it is that subscriber equipment can identify this subframe for which kind of subframe, the correct transmission parameter that obtains this subframe, thus subscriber equipment can carry out operations such as demodulation, measurement accurately to the subframe in the sub-district of receiving.
Description of drawings
Fig. 1 is the schematic diagram of LTE frame structure in the prior art;
Fig. 2 is the frame structure schematic diagram of unicast sub in the prior art;
Fig. 3 is the frame structure schematic diagram of MBSFN subframe in the prior art;
Fig. 4 is the flow chart of the method for subframe state in the embodiments of the invention identifying cells;
Fig. 5 is the particular flow sheet of the method for subframe state in the embodiments of the invention identifying cells;
Fig. 6 is the schematic diagram of the device of subframe state in the embodiments of the invention identifying cells;
Fig. 7 is the concrete schematic diagram of the device of subframe state in the embodiments of the invention identifying cells;
Fig. 8 is the flow chart of the method for subframe state in the embodiments of the invention identification sub-district;
Fig. 9 is the schematic diagram of the device of subframe state in the embodiments of the invention identification sub-district;
Figure 10 is the concrete schematic diagram of the device of subframe state in the embodiments of the invention identification sub-district;
Figure 11 is the systematic schematic diagram of subframe state in embodiments of the invention identification is distinguished.
Embodiment
Owing to keep the introducing of sub-district, make that the subframe in the sub-district can have three kinds of different states, i.e. unicast sub, MBSFN subframe and clean culture low-power subframe.And by high-level signaling of the prior art, can not identify accurately in the subframe in the sub-district, whether there is clean culture low-power subframe.Therefore, the subframe to receiving that subscriber equipment just can not be correct is carried out operations such as demodulation, measurement.
For solving the above-mentioned problems in the prior art, the method of subframe state in the embodiments of the invention identifying cells, by the Physical Control Format Indicator Channel in the sign subframe, indicate the existence of specific sub-frame in the subframe (as clean culture low-power subframe), thereby make subscriber equipment can identify the subframe of various states.
For the advantage of the technical scheme that makes the embodiment of the invention is clearer, embodiments of the invention are described in further detail below in conjunction with accompanying drawing.
As shown in Figure 4, the method for subframe state comprises the steps: in the embodiments of the invention identifying cells
S1: set or the storage transmission parameter of specific sub-frame;
S2: for described specific sub-frame is added status indicator.
Whether as from the foregoing, utilize embodiments of the invention, can add sign for specific sub-frame, judging described subframe by this sign is specific sub-frame.Thereby, avoided to identify with high-level signaling in the prior art defective of three kinds of states of subframe, which kind of subframe makes subscriber equipment can identify this subframe is, the correct transmission parameter that obtains this subframe, thereby subscriber equipment can carry out operations such as demodulation, measurement accurately to the subframe in the sub-district of receiving.
Above-mentioned specific sub-frame can be any subframe with the distinctive transmission parameter of a cover, and transmission parameter comprises a kind of parameter in following each parameter or the combination of multiple parameter, and is not limited to following parameter:
Send professional kind (as real-time business, data service, clean culture, BroadCast MultiCast Service, speech business, video traffic, streaming media service or the like), the send mode of one or more channels is (as multi-access mode in the kind of transmitting channel (sending specific one or more channels), subframe, time-frequency code resource multiplex mode, coded system, modulation system, many antennas mode, single sub-district or many sub-districts mode, allow or do not allow soft merging or the like), the symbol numbers that control channel takies, subframe through-put power (allowing the signal power difference on the different time-frequency code resources in the subframe), the structure of one or more channels in the subframe, the content of the interior one or more channels of subframe etc.
For example specific sub-frame can be clean culture low-power subframe, the MBSFN subframe, and any of unicast sub, wherein clean culture low-power subframe has specific control channel symbol numbers and subframe through-put power.
Wherein the detailed process of step S1 is: utilize in the Physical Control Format Indicator Channel of described subframe, and the bit value of idle condition correspondence, identifying this subframe is specific sub-frame.
With described subframe is that unicast sub is an example, and according to prior art, PCFICH channel (Physical Control Format Indicator Channel) is totally 2 bits, can identify one of four states.Three states wherein are used for identifying the shared symbol numbers of unicast sub down control channel, and the one of four states free time.Represent with regard to the pairing bit value of available one of four states whether this subframe is clean culture low-power subframe so.For example, if described 2 represented one of four states of bit are respectively: 00,01,10,11.Wherein, 00,01,10 represent the shared symbol numbers of down control channel in the unicast sub respectively, so, are clean culture low-power subframes with regard to available 11 these subframes of expression.Be subscriber equipment after receiving described subframe, if read the bit value of the one of four states in the PCFICH channel, illustrate that then this subframe is a clean culture low-power subframe.Can certainly identify clean culture low-power subframe with 00 or 01 or 10, at this moment its excess-three state is used for the expression that down control channel takies symbol numbers.
And described transmission parameter comprises, the shared symbol numbers of down control channel in the described specific sub-frame.When described specific sub-frame was clean culture low-power subframe, described transmission parameter also can comprise the performance number that symbol in the clean culture low-power subframe descends, and described clean culture low-power subframe is to belong to MBSFN class subframe, still belonged to non-MBSFN class subframe.
In order to improve whether the subframe of distinguishing in the described sub-district is the efficient of clean culture low-power subframe, reduce the detection burden of subscriber equipment, as shown in Figure 5, embodiments of the invention also can comprise step:
S 11: identifying described subframe by high-level signaling is MBSFN class subframe or non-MBSFN class subframe.Wherein the MBSFN subframe belongs to MBSFN class subframe, and unicast sub belongs to non-MBSFN class subframe.
With described specific sub-frame is that clean culture low-power subframe is an example, owing to only comprise the control signaling of line correlation in the MBSFN subframe, and both comprised the line correlation signaling in unicast sub and the clean culture low-power subframe, comprise line correlation signaling down again, therefore if clean culture low-power subframe only occurs in the non-MBSFN class subframe of distinguishing, that is MBSFN class subframe only comprises the MBSFN subframe, non-MBSFN class subframe comprises unicast sub and clean culture low-power subframe, if then subscriber equipment only need receive down line correlation signaling and/or unicast service, then it only needs to detect non-MBSFN class subframe, then can dormancy at the transmit time segments of MBSFN (class) subframe, reach the purpose of economize on electricity.
And if clean culture low-power subframe only occurs in MBSFN class subframe or all occurs in two class subframes, promptly MBSFN class subframe comprises MBSFN subframe and clean culture low-power subframe.Then no matter whether subscriber equipment only needs to receive line correlation signaling and business down, all must all subframes be detected, the PCFICH channel to all subframes detects at least.At this moment if in MBSFN class subframe, the PCFICH channel that reads described subframe does not use one of four states, promptly this subframe is not identified as clean culture low-power subframe, this subframe is the MBSFN subframe so, if therefore subscriber equipment only need receive down line correlation signaling and/or unicast service, then other channels to described MBSFN subframe do not detect.
Therefore, identify the existence of clean culture low-power subframe by the idle condition of utilizing PCFICH channel in the non-MBSFN class subframe, utilize the idle condition of PCFICH channel in the MBSFN class subframe to identify this mode of existence of clean culture low-power subframe, can reduce the detection burden of subscriber equipment.
In above-mentioned steps S2, in the definition specific sub-frame, during the shared symbol numbers of down control channel, can define according to following mode.
Mode one: the value of setting the shared symbol numbers of down control channel in the described specific sub-frame is 1 or 2 or 3.
And when described specific sub-frame is clean culture low-power subframe (but being not limited to clean culture low-power subframe), also can adopt following mode to define.
Mode two: the value of the symbol numbers that described down control channel is shared be add up and, described add up and be in the described sub-district or corresponding SFA in down control channel takies in the MBSFN subframe symbol numbers and array { 1,2,3, among the N} any one array element and, wherein N is a natural number, the representative value of N is 2; If described add up and greater than N+1, then described add up and value be N+1, wherein N+1 is the maximum of the control channel symbol numbers that can take, the representative value of N+1 is 3.The symbol numbers that control channel in the wherein said MBSFN subframe takies can be notified by high-level signaling.MBSFN subframe in the described corresponding SFA refers to the subframe that sends simultaneously with described specific sub-frame in the SFA relevant with this reservation sub-district.
Mode three: the value of setting the shared symbol numbers of described down control channel is, the symbol numbers that takies with down control channel in the contiguous unicast sub of described clean culture low-power subframe (in time) or the symbol numbers that down control channel takies in the interior MBSFN subframe of corresponding SFA perhaps described the sub-district in.
Mode four: the value of setting the shared symbol numbers of described down control channel be add up and, describedly add up and be in the unicast sub, in the perhaps clean culture low-power subframe, the perhaps symbol numbers and the array { 1,2,3 that take of the PHICH channel (physical responses channel) in the MBSFN subframe, among the N} any one array element and, wherein N is a natural number, the representative value of N is 2; If described add up and greater than N+1, then described add up and value be N+1, wherein N+1 is the maximum of the control channel symbol numbers that can take, the representative value of N+1 is 3.
Mode five: the value of setting the shared symbol numbers of described down control channel is in the unicast sub, in the perhaps clean culture low-power subframe, and the perhaps symbol numbers that takies of the PHICH channel (physical responses channel) in the MBSFN subframe.
Certainly, the method for setting the shared symbol numbers of down control channel in the described specific sub-frame is not limited thereto.
In addition, when described specific sub-frame is unicast sub, also need to define the performance number that symbol descends in the described clean culture low-power subframe.
The symbol that power descends can be whole symbols in the described clean culture low-power subframe, in the perhaps described clean culture low-power subframe, and other symbols except that described sub-district in or in the interior MBSFN subframe of corresponding SFA the shared symbol of down control channel.The symbol decline power of the outer symbol that the described down control channel that removes MBSFN subframe in the SFA takies, be in the corresponding SFA, if n symbol transmission down control channel before in the MBSFN subframe that sends simultaneously with this clean culture low-power subframe, n is { 0,1,2,3 ..., a value among the N+1}, then remove a preceding n outer symbol in this clean culture low-power subframe, power all descends.
N symbol still can satisfy normal covering requirement of going up the line correlation signaling like this, and it is very little to guarantee to keep between the sub-district in sub-district and the SFA interference simultaneously again.And the performance number that symbol descends in the described clean culture low-power subframe is a preset value.This preset value sends to each subscriber equipment by base station unit with the form of broadcasting, and perhaps is stored on base station unit and the subscriber equipment.
Be example in the mode one in four kinds of modes of the symbol numbers that takies of definition down control channel below, the detailed process (A1-A5) of the method when once the interior subframe of embodiments of the invention identifying cells is clean culture low-power subframe is described, and the processing procedure (C1-C4) of processing procedure of base station equipment (B1-B6) and subscriber equipment.In mode one, setting the shared symbolic number of down control channel is 2, and simultaneously, the power of setting the part symbol in the subframe reduces.
A1: by the positional information of high-level signaling sign MBSFN class subframe and non-MBSFN class subframe.
A2: the shared symbol numbers of setting in the described subframe of down control channel is 2.
A3: the decline power of symbol in the agreement down control channel, the power of described decline is a predetermined value.Like this, subscriber equipment will be with this subframe of power demodulation of a decline after the subframe of at every turn receiving is designated clean culture low-power subframe.
A4: agreement clean culture low-power subframe belongs to MBSFN class subframe or non-MBSFN class subframe.
A5: the value of PCFICH channel is set to the 4th kind of state in the clean culture low-power subframe.
B1: by the positional information of high-level signaling sign MBSFN class subframe and non-MBSFN class subframe.
B2: the shared symbol numbers of setting in the described subframe of down control channel is 2.
B3: set the decline power of symbol in the down control channel, the power of described decline is a predetermined value.Like this, subscriber equipment will be with this subframe of power demodulation of a decline after the subframe of at every turn receiving is designated clean culture low-power subframe.
B4: set clean culture low-power subframe and belong to MBSFN class subframe or non-MBSFN class subframe.
B5: the value of PCFICH channel is set to the 4th kind of state in the clean culture low-power subframe.
B6: the parameter of setting according to B2, B3, B4 step sends signal, comprises sending various types of subframes, also comprises sending described PCFICH channel and the described high-level signaling of step B1, can also comprise or not comprise B2, B3, the described one or more parameters of B4.
C1: subscriber equipment reception or storing step B2, B3, the described transmission parameter of B4.
C2: high-level signaling described in the subscriber equipment read step B1.When subscriber equipment receives only down line correlation signaling and/or unicast service, and step B4 agreement clean culture low-power subframe is when belonging to MBSFN class subframe, and subscriber equipment only detects non-MBSFN class subframe, otherwise two class subframes all detect.
C 3: subscriber equipment reads the PCFICH channel, when the value of this channel is one of four states, represents that this subframe is a clean culture low-power subframe.
C4: subscriber equipment is according to the symbol numbers of down control channel that receive or storage, the power drop-out value by appointment and the under powered character position of agreement, the control channel in demodulation, the described clean culture low-power subframe of measurement and other channels, signal.
If in a manner mentioned above two, mode three, mode four, mode five, the shared symbol numbers of down control channel in the definition subframe, the implementation procedure of specific embodiments of the invention and above-mentioned steps A 1-A5, B1-B6, the principle of C1-C4 is identical.
It should be noted that embodiments of the invention only are that clean culture low-power subframe is that example describes with the specific sub-frame.If specific sub-frame is when being the subframe of other types, principle is identical during with clean culture low-power subframe, does not repeat them here.
As shown in Figure 6, embodiments of the invention also provide the device of subframe state in a kind of identifying cells.The device of subframe state in the embodiments of the invention identifying cells comprises: unit and sign adding device are set; Wherein,
The unit is set, is used for setting or the storage transmission parameter of specific sub-frame;
The sign adding device is used to described specific sub-frame to add status indicator.
So, utilize the described device of the embodiment of the invention, the status indicator that utilizes the sign adding device to add for specific sub-frame, and according to the transmission parameter transmission specific sub-frame of setting or storing in the unit is set, make which kind of subframe when subscriber equipment can identify this subframe, the correct transmission parameter that obtains this subframe, thus subscriber equipment can carry out operations such as demodulation, measurement accurately to the subframe in the sub-district of receiving.
In addition, as shown in Figure 7, the described unit that is provided with also can comprise: first is provided with module and second is provided with module.Wherein:
First is provided with module, is used for being provided with or storing the shared symbol numbers of specific sub-frame down control channel;
Second is provided with module, when described specific sub-frame is clean culture low-power subframe, is used for being provided with or storing the performance number that described clean culture low-power subframe symbol descends;
The 3rd is provided with module, and being used to be provided with described clean culture low-power subframe is to belong to MBSFN class subframe, still belongs to non-MBSFN class subframe.
Therefore, by first, second, third the transmission parameter that module is provided with is set respectively, makes described specific sub-frame to transmit accurately.
Corresponding with the method for subframe state in the embodiment of the invention identifying cells, embodiments of the invention also provide a kind of method of discerning subframe state in the sub-district.
As shown in Figure 8, the method for subframe state comprises the steps: in the embodiments of the invention identification sub-district
T1: read the status indicator in the Physical Control Format Indicator Channel of described subframe of reception;
T2: when described status indicator shows that described subframe is specific sub-frame, be used for described specific sub-frame being handled according to transmission parameter that receive or storage.
So, utilize the described method of the embodiment of the invention, status indicator in the Physical Control Format Indicator Channel that utilization is read, distinguish specific sub-frame, and, described specific sub-frame is handled the correct transmission parameter that obtains this subframe according to transmission parameter of specific sub-frame that set or storage, thereby subscriber equipment can carry out operations such as demodulation, measurement accurately to the subframe in the sub-district of receiving.
The subframe type that wherein said specific sub-frame comprised, identical with among the embodiment of the method for subframe state in the identifying cells in the embodiments of the invention do not repeat them here.
Corresponding with the device of subframe state in the embodiment of the invention identifying cells, embodiments of the invention also provide a kind of device of discerning subframe state in the sub-district.
As shown in Figure 9, embodiments of the invention also provide a kind of device of discerning subframe state in the sub-district, comprising: reading unit and processing unit; Wherein,
Reading unit is used for reading the status indicator of Physical Control Format Indicator Channel of the described subframe of reception;
Processing unit when described status indicator shows that described subframe is specific sub-frame, is used for according to transmission parameter that receive or storage described specific sub-frame being handled.
So, utilize the described device of the embodiment of the invention, utilize the status indicator in the Physical Control Format Indicator Channel that reading unit reads, distinguish specific sub-frame, and according to transmission parameter of specific sub-frame that receive or storage, described specific sub-frame is handled, thereby subscriber equipment can carry out operations such as demodulation, measurement to the subframe of receiving accurately.
Wherein, as described in Figure 10, described processing unit can comprise:
First parameter acquisition module is used for reading the shared symbol numbers of specific sub-frame down control channel reception or storage;
Second parameter acquisition module when described specific sub-frame is clean culture low-power subframe, is used to read the power drop-out value of clean culture low-power subframe reception or storage;
The 3rd parameter acquisition module, being used to read described clean culture low-power subframe reception or storage is to belong to MBSFN class subframe, still belongs to non-MBSFN class subframe;
Demodulation module is used for according to the parameter demodulation down channel and/or the signal that obtain by parameter acquisition module.
Like this, the existence that identifies the specific sub-frame in the subframe that subscriber equipment just can be correct, and various subframes are carried out operations such as correct demodulation, measurement according to the parameter that obtains.
At last, embodiments of the invention also provide a kind of system of differentiating intra-district sub-frame state.
As shown in figure 10, the system of a kind of differentiating intra-district sub-frame state of providing of embodiments of the invention comprises:
Base station unit is used for setting or the storage transmission parameter of specific sub-frame, for described specific sub-frame is added status indicator, and sends described specific sub-frame;
Subscriber equipment is used for reading the status indicator of the Physical Control Format Indicator Channel of described subframe; If described status indicator shows that described subframe is a specific sub-frame, then, described subframe is handled according to transmission parameter of specific sub-frame that receive or storage.
Utilizing the described system of the embodiment of the invention, is that specific sub-frame is added sign by base station unit at first, and subscriber equipment can judge whether described subframe is specific sub-frame by the status indicator in the Physical Control Format Indicator Channel that reads subframe so.Like this, it is that subscriber equipment can identify this subframe for which kind of subframe, and according to transmission parameter of specific sub-frame that receive or storage, described specific sub-frame is handled, thereby subscriber equipment can carry out operations such as demodulation, measurement accurately to the subframe in the sub-district of receiving.
For example, be that clean culture low-power subframe is an example with described specific sub-frame, setting the shared symbolic number of down control channel is 2, simultaneously, the power of setting the part symbol in the subframe reduces.The course of work of the described system of the embodiment of the invention is as follows:
D1: by the positional information of high-level signaling sign MBSFN class subframe and non-MBSFN class subframe.
D2: the shared symbol numbers of down control channel that base station unit is set in the described subframe is 2.
D3: base station unit setting section symbol power descends, and the power of described decline is a predetermined value.Like this, subscriber equipment after the subframe of at every turn receiving is designated clean culture low-power subframe, the symbol that will descend with this subframe internal power of the power demodulation of a decline.Especially, the part symbol here can be the symbol of the symbol back that down control channel takies in the MBSFN subframe in the corresponding SFA.
D4: base station unit is set clean culture low-power subframe and is belonged to MBSFN class subframe or non-MBSFN class subframe.
D5: the value of PCFICH channel is set to the 4th kind of state in the base station unit clean culture low-power subframe.
D6: according to the parameter of D2, D3, the setting of D4 step, the base station unit transmission signals, comprise sending various types of subframes, also comprise sending described PCFICH channel and the described high-level signaling of step D1, can also comprise or not comprise B2, B3, the described one or more parameters of B4.
D7: receive described all signals by subscriber equipment, comprise receiving various types of subframes, also comprise receiving described PCFICH channel and the described high-level signaling of step D1, can also comprise or not comprise B2, B3, the described one or more parameters of B4.
D8: subscriber equipment reads the PCFICH channel, when the value of this channel is one of four states, represents that this subframe is a clean culture low-power subframe.When subscriber equipment receives only down line correlation signaling and/or unicast service, and step D4 agreement clean culture low-power subframe is when belonging to MBSFN class subframe, and subscriber equipment only detects non-MBSFN class subframe, otherwise two class subframes all detect.
D9: at last by the symbol numbers of subscriber equipment according to down control channel that receive or storage, according to power drop-out value and under powered character position that receive or storage, the control channel in demodulation, the described clean culture low-power subframe of measurement and other channels, signal.
Certainly; embodiments of the invention also can have a variety of; under the situation that does not deviate from embodiments of the invention spirit and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to embodiments of the invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of embodiments of the invention.
Claims (25)
1. the method for the interior subframe state of identifying cells is characterized in that described method comprises the steps:
Set or the storage transmission parameter of specific sub-frame;
Be that described specific sub-frame adds status indicator, comprise: utilize the bit value of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe, identifying this subframe is specific sub-frame.
2. the method for subframe state in the identifying cells according to claim 1 is characterized in that described method also comprises:
By high-level signaling send multimedia broadcasting with net frame class subframe or non-multimedia broadcasting frequently with the positional information of net frame class subframe frequently.
3. the method for subframe state is characterized in that described transmission parameter comprises: the shared symbol numbers of down control channel in the described specific sub-frame in the identifying cells according to claim 1.
4. the method for subframe state is characterized in that described specific sub-frame is a clean culture low-power subframe in the identifying cells according to claim 3.
5. the method for subframe state is characterized in that in the identifying cells according to claim 4, and described transmission parameter also comprises, the performance number that symbol descends in the clean culture low-power subframe.
6. the method for subframe state is characterized in that the value of the symbol numbers that described down control channel is shared is 1 or 2 or 3 in the identifying cells according to claim 3.
7. the method for subframe state in the identifying cells according to claim 4, it is characterized in that, the value of the symbol numbers that described down control channel is shared be add up and, described add up and be described the sub-district in or the corresponding symbol numbers that takies with frequency net frame class subframe down control channel with web area inner multimedia broadcasting frequently and 1 or 2 with; If described add up and greater than 3, then described add up and value be 3;
Perhaps, describedly add up and be in the unicast sub, in the perhaps clean culture low-power subframe, perhaps multimedia broadcasting with the symbol numbers of the physical responses channel occupancy in the net frame class subframe frequently with 1 or 2 with; If described add up and greater than 3, then described add up and value be 3.
8. the method for subframe state in the identifying cells according to claim 4, it is characterized in that, the value of the symbol numbers that described down control channel is shared is, the symbol numbers that takies with down control channel in the contiguous unicast sub of described clean culture low-power subframe or the corresponding symbol numbers that takies with down control channel in the frequency net frame class subframe with web area inner multimedia broadcasting frequently perhaps described the sub-district in.
9. the method for subframe state in the identifying cells according to claim 4, it is characterized in that, the value of the symbol numbers that described down control channel is shared is, in the unicast sub, in the perhaps clean culture low-power subframe, perhaps multimedia broadcasting is with the symbol numbers of the physical responses channel occupancy in the frequency net frame class subframe.
10. the method for subframe state is characterized in that described transmission parameter also comprises: the attribute of described clean culture low-power subframe in the identifying cells according to claim 4.
11. the method for subframe state in the identifying cells according to claim 10, it is characterized in that, the attribute of described clean culture low-power subframe comprises: described clean culture low-power subframe is to belong to multimedia broadcasting with frequency net frame class subframe, still belongs to non-multimedia broadcasting with frequency net frame class subframe.
12. the method for subframe state is characterized in that in the identifying cells according to claim 4, the symbol that power descends in the described clean culture low-power subframe comprises:
Whole symbols in the described clean culture low-power subframe; Perhaps
In the described clean culture low-power subframe, in described sub-district or corresponding with web area inner multimedia broadcasting frequently with other symbols the shared symbol of down control channel in the net frame class subframe frequently.
13. the method for subframe state is characterized in that in the identifying cells according to claim 12, the performance number that symbol descends in the described clean culture low-power subframe is a preset value.
14. the device of the interior subframe state of identifying cells is characterized in that described device comprises:
The unit is set, is used for setting or the storage transmission parameter of specific sub-frame;
The sign adding device is used to described specific sub-frame to add status indicator, comprising: utilize the bit value of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe, identifying this subframe is specific sub-frame.
15. the device of sign subframe state according to claim 14, it is characterized in that, described device also comprises: the subframe taxon, be used to identify described multimedia broadcasting with net frame class subframe and non-multimedia broadcasting are with the positional information of frequency net frame class subframe frequently, wherein said positional information sends by high-level signaling.
16. the device of sign subframe state according to claim 14 is characterized in that, the described unit that is provided with comprises:
First is provided with module, is used for being provided with or storing the shared symbol numbers of specific sub-frame down control channel.
17. the device of sign subframe state according to claim 16 is characterized in that, when described specific sub-frame was clean culture low-power subframe, the described unit that is provided with comprised:
Second is provided with module, is used for being provided with or storing the performance number that described clean culture low-power subframe symbol descends.
18. the device of sign subframe state according to claim 17 is characterized in that, the described unit that is provided with comprises:
The 3rd is provided with module, is used to be provided with the attribute of described clean culture low-power subframe.
19. a method of discerning subframe state in the sub-district is characterized in that described method comprises the steps:
Read the status indicator that bit value reacted of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe;
When described status indicator shows that described subframe is specific sub-frame, be used for described specific sub-frame being handled according to transmission parameter that receive or storage.
20. the method for subframe state is characterized in that in the identification according to claim 19 sub-district, described specific sub-frame is a clean culture low-power subframe.
21. a device of discerning subframe state in the sub-district is characterized in that, described device comprises:
Reading unit is used for reading the status indicator that bit value reacted of Physical Control Format Indicator Channel idle condition correspondence of the described subframe of reception;
Processing unit when described status indicator shows that described subframe is specific sub-frame, is used for according to transmission parameter that receive or storage described specific sub-frame being handled.
22. the device of subframe state is characterized in that in the identification according to claim 21 sub-district, described processing unit comprises:
First parameter acquisition module is used for reading the shared symbol numbers of specific sub-frame down control channel reception or storage;
Demodulation module is used for according to the parameter demodulation down channel and/or the signal that obtain by parameter acquisition module.
23. the device of subframe state is characterized in that in the identification according to claim 22 sub-district, when described specific sub-frame was clean culture low-power subframe, described processing unit comprised:
Second parameter acquisition module is used to read the power drop-out value of clean culture low-power subframe reception or storage.
24. the device of subframe state is characterized in that in the identification according to claim 23 sub-district, described processing unit also comprises:
The 3rd parameter acquisition module is used to read the attribute of clean culture low-power subframe.
25. the system of a differentiating intra-district sub-frame state is characterized in that, described system comprises:
Base station unit is used for setting or the storage transmission parameter of specific sub-frame, for described specific sub-frame is added status indicator, and sends described specific sub-frame; Wherein, utilize the bit value of idle condition correspondence in the Physical Control Format Indicator Channel of described subframe, identifying this subframe is specific sub-frame;
Subscriber equipment is used for reading the status indicator that bit value reacted of the Physical Control Format Indicator Channel idle condition correspondence of described subframe; If described status indicator shows that described subframe is a specific sub-frame, then, described subframe is handled according to transmission parameter of specific sub-frame that receive or storage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008100004878A CN101489184B (en) | 2008-01-14 | 2008-01-14 | Method, apparatus and system for differentiating intra-district sub-frame state |
| PCT/CN2009/070047 WO2009092305A1 (en) | 2008-01-14 | 2009-01-06 | Method, apparatus and system for distinguishing states of sub-frames in a cell |
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| CN2008100004878A CN101489184B (en) | 2008-01-14 | 2008-01-14 | Method, apparatus and system for differentiating intra-district sub-frame state |
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| CN101489184A CN101489184A (en) | 2009-07-22 |
| CN101489184B true CN101489184B (en) | 2010-12-08 |
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| CN102362532B (en) | 2009-04-23 | 2015-03-11 | 华为技术有限公司 | Method and equipment for informing use of sub-frames, method and equipment for processing sub-frames |
| CN101998281B (en) * | 2009-08-11 | 2014-07-09 | 电信科学技术研究院 | Method, system and device for transmitting data |
| CN101998246B (en) * | 2009-08-14 | 2013-01-23 | 电信科学技术研究院 | Method and equipment for receiving and transmitting scheduling information |
| CN101998241A (en) * | 2009-08-19 | 2011-03-30 | 中兴通讯股份有限公司 | Method and system for synchronous subframe resource allocation of multimedia broadcast single frequency network (MBSFN) |
| KR101573001B1 (en) * | 2009-08-24 | 2015-11-30 | 삼성전자주식회사 | Receiver and method for using reference singnal thereof |
| US9374148B2 (en) * | 2009-11-17 | 2016-06-21 | Qualcomm Incorporated | Subframe dependent transmission mode in LTE-advanced |
| CN102857868B (en) * | 2011-06-30 | 2017-05-10 | 中兴通讯股份有限公司 | Device and method for sending unicast services |
| US9148213B2 (en) | 2012-05-04 | 2015-09-29 | Futurewei Technologies, Inc. | System and method for radio frequency repeating |
| WO2014047927A1 (en) | 2012-09-29 | 2014-04-03 | 华为技术有限公司 | Control information sending method, receiving method, and apparatus |
| WO2015143672A1 (en) * | 2014-03-27 | 2015-10-01 | 华为技术有限公司 | Link adaptive adjustment method and apparatus |
| CN105682049A (en) * | 2014-11-19 | 2016-06-15 | 普天信息技术有限公司 | Method and device for lowering interference in multimedia broadcast multicast service (MBMS) |
| CN105656597B (en) * | 2014-11-24 | 2020-02-14 | 华为技术有限公司 | Data transmission method and device |
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| CN1498480A (en) * | 2001-04-20 | 2004-05-19 | �Ҵ���˾ | Effect processing of multicast transmissions |
| CN1960353A (en) * | 2005-10-31 | 2007-05-09 | 华为技术有限公司 | Method and system of setting up reference signal for multiplexing service data |
| CN101090405A (en) * | 2006-06-16 | 2007-12-19 | 中兴通讯股份有限公司 | Fault state transmission method in E1 grade connection configuration |
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| JP2007243718A (en) * | 2006-03-09 | 2007-09-20 | Matsushita Electric Ind Co Ltd | Hand-over control method, connection station, and radio base station |
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|---|---|---|---|---|
| CN1498480A (en) * | 2001-04-20 | 2004-05-19 | �Ҵ���˾ | Effect processing of multicast transmissions |
| CN1960353A (en) * | 2005-10-31 | 2007-05-09 | 华为技术有限公司 | Method and system of setting up reference signal for multiplexing service data |
| CN101090405A (en) * | 2006-06-16 | 2007-12-19 | 中兴通讯股份有限公司 | Fault state transmission method in E1 grade connection configuration |
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