CN101287281A - Transmission apparatus and method for scheduling control signaling of downlink in wireless communication system - Google Patents
Transmission apparatus and method for scheduling control signaling of downlink in wireless communication system Download PDFInfo
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- CN101287281A CN101287281A CNA2007101005695A CN200710100569A CN101287281A CN 101287281 A CN101287281 A CN 101287281A CN A2007101005695 A CNA2007101005695 A CN A2007101005695A CN 200710100569 A CN200710100569 A CN 200710100569A CN 101287281 A CN101287281 A CN 101287281A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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Abstract
The invention provides a method for transferring a downlink scheduling and control signaling in a time division duplex system. In the time division duplex system, a base station instructs a subframe used in the transfer of downlink data in remaining subframes in the scheduling period by transferring time-domain resource information in a downlink physical control channel and then transfers the downlink physical control channel. By adopting the method of the invention, the overhead of the downlink physical control channel can be effectively reduced so as to improve the spectrum utilization ratio of the system; the complexity for receiving the downlink physical control channel by subscriber equipment can be effectively reduced so as to lengthen the standby time; the time-sequence resource of the system can be effectively utilized so as to improve the spectrum utilization ratio of the system.
Description
Technical field
The present invention relates to wireless communication system, particularly relate to the transmission equipment and the method for scheduling control signaling of downlink in the wireless communication system.
Background technology
Now, 3GPP standardization body has set about beginning its existing system standard is carried out long-term evolution (LTE, Long Term Evolution).In the middle of numerous physical layer transmission technology, based on OFDM (Orthogonal Frequency Division Multiplexing, hereinafter to be referred as OFDM) the downlink transfer technology and be the focus of research based on the uplink technology that single-carrier frequency division multiple access inserts (Single CarrierFrequency Division Multiple Access is hereinafter to be referred as SC-FDMA).Be a kind of multi-carrier modulation communication technology on the OFDM technological essence, its basic principle is the data flow of a two-forty to be decomposed into several rate data streams transmit simultaneously on one group of mutually orthogonal subcarrier.The OFDM technology is because its multicarrier character has performance advantage aspect a lot.It on the SC-FDMA technological essence a kind of single carrier transmission technology, its signal peak-to-average is than (Peak to Average Power Ratio, hereinafter to be referred as PAPR) lower, thereby the power amplifier of portable terminal can be with higher efficient work, enlarge the coverage of sub-district, by adding Cyclic Prefix (Cyclic Prefix) and frequency domain equalization, it is lower that it handles complexity simultaneously.
Wireless communication system can be divided into Frequency Division Duplexing (FDD) (FDD) and time division duplex (TDD) according to its duplex mode.The FDD duplex mode is meant that the communication on the both direction in the wireless system finishes respectively on two frequencies separated by a distance, thereby communication entity can be finished the operation that receives and send simultaneously.The TDD duplex mode is meant that the communication on the both direction in the wireless system finishes on identical frequency, thus the operation that communication entity can not receive simultaneously and send, and the operation that promptly receives and send separates in time.In LTE, the TDD duplex mode has two kinds of different frame structures: promptly general tdd frame structure (Generic TDD Frame Structure) and alternative tdd frame structure (Alternative TDD Frame Structure is abbreviated as A-TDD).The frame structure of wherein general tdd frame structure and FDD is basic identical, and alternative tdd frame structure has its special structure.Hereinafter this two kinds of structures will be provided respectively.
According to existing discussion result about LTE, be the frame structure of LTE system descending FDD and general TDD as shown in Figure 1, Radio Resource in the LTE system is meant time and the frequency resource that system or subscriber equipment can take, can (101-103) do differentiation with radio frames (Radio Frame) for unit, the time span of radio frames is identical with the time span of the radio frames of WCDMA system, and promptly its time length is 10ms; Each frame is subdivided into a plurality of time slots (Slot) (104-107), and present hypothesis is that each radio frames comprises 20 time slots, and time slots length is 0.5ms; Each time slot comprises a plurality of OFDM symbols again, and according to present hypothesis, the time span of effective OFDM symbol is about 66.7 μ s in the LTE system.The time span of the CP of OFDM symbol can have two kinds, promptly the time span of short CP is approximately 4.8 μ s, the about 16.7 μ s of the time span of long CP, long CP time slot is used for many Cell Broadcast CB/multicasts and the very large situation of radius of society, short CP time slot (108) comprises 7 OFDM symbols, and long CP time slot (109) comprises 6 OFDM symbols.
According to the discussion result of current LTE, Fig. 2 is the frame structure of LTE A-TDD system, and radio frames (radio frame) time span (201-203) is 10ms; Each frame is divided into the field (half-frame) (204,205) of two 5ms; Each field comprises 7 time slots (206～212) and three special territories, i.e. descending pilot frequency time slot (DwPTS) (213), protection be (GP) (214) and uplink pilot time slot (UpPTS) (215) at interval.And the time slot 0 (206) and the DwPTS of each field are fixed for downlink transfer, and the time slot 1 (207) of UpPTS and each field is fixed for uplink.With the sampling frequency is that 30.72MHz is an example, and each time slot (206～212) comprises 20736 sampling, and the time is 0.625ms; DwPTS comprises 2572 sampling, and the time is about 83.7ms; GP comprises 1536 sampling, and the time is 50ms; UpPTS comprises 4340 sampling, and the time is about 141.3ms.Identical with the FDD system, the time span of its effective OFDM symbol is about 66.7 μ s, and the time span of the CP of OFDM symbol can have two kinds, and the time span of short CP is approximately 7.29 μ s, and the time span of long CP is approximately 16.67 μ s.Short CP time slot (216) comprises 9 OFDM symbols and a slot time (TI) (218), and long CP time slot (217) comprises 8 OFDM symbols and a TI (219).The time span of noting two kinds of TI (218,219) is unequal.According to present discussion result, each time slot is a subframe.
In ofdm system,, then be local formula transmission if user's data is mapped on the continuous sub-carriers.If user's data is mapped on the subcarrier of dispersion, then be distributed transmission.The employed subcarrier of subscriber equipment in the same sub-district usually can be not overlapping, and this resource distribution mode is called as the orthogonal resource allocation at frequency domain.The method of salary distribution at the orthogonal resource of time domain is that the base station uses different time slot or OFDM symbols to transmit data to the subscriber equipment in the same sub-district.The resource distribution mode of comprehensive frequency domain and time domain can be distributed to the user in the mode of time domain and frequency domain two dimension lattice with descending resource in ofdm system.
In communication system, the base station is finished resource allocation and to the control of the transmitting-receiving of each subscriber equipment, in this patent, will be called downlink physical control channel at the control signaling of each subscriber equipment by constantly sending control signaling in each scheduling.In the discussion of current LTE, downlink physical control channel both can the bearing downlink scheduling control signaling, also can carry ascending scheduling control signaling.Downlink physical control channel also can transmit the affirmation information (ACK/NACK) to uplink data sending simultaneously.
In the discussion of current A-TDD, in DwPTS, transmit primary synchronization channel (PrimarySynchronization Channel is designated hereinafter simply as P-SCH).72 subcarriers of P-SCH using system bandwidth center.For remaining subcarrier among the DwPTS, present a kind of motion is to transmit data therein.
In current LTE discussed, the broadcast message of system can transmission in main broadcast channel (PrimaryBroadcast Channel is designated hereinafter simply as P-BCH) and Dynamic Broadcast Channel (DynamicBroadcast Channel is designated hereinafter simply as D-BCH).Also may define time broadcast channel (Secondary Broadcast Channel is designated hereinafter simply as S-BCH) in addition and come transmitting broadcast information.
Summary of the invention
The transmission equipment and the method that the purpose of this invention is to provide scheduling control signaling of downlink in a kind of tdd systems.
According to an aspect of of the present present invention, the transmission method of scheduling control signaling of downlink in a kind of tdd systems comprises step:
A) in tdd systems, the base station is transmitted time-domain resource information and is indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle in downlink physical control channel;
B) the described downlink physical control channel of base station transmits.
According to another aspect of the present invention, subscriber equipment receives the method for control signaling in a kind of tdd systems, comprises the steps:
A) in tdd systems, subscriber equipment detects downlink physical control channel;
B) subscriber equipment reads downlink data according to the employed sub-frame information of downlink data transmission in the time-domain resource information of transmitting in the downlink physical control channel residue subframe of indicated dispatching cycle.
According to another aspect of the present invention, the equipment of base station transmits scheduling control signaling of downlink comprises radiating portion in a kind of tdd systems, also comprises:
Scheduler module, thus be used for determining how to give each subscriber equipment with resource block assignments according to the CQI of subscriber equipment report and the data traffic information of subscriber equipment;
Control signaling maker module, be used for producing one or more downlink physical control channels, and transmission time-domain resource information is indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle in each downlink physical control channel according to the situation of resource block assignments;
Described emitter is transmitted into each downlink physical control channel in the wireless channel.
According to another aspect of the present invention, the equipment of subscriber equipment processing controls signaling comprises receiving unit in a kind of tdd systems, also comprises:
The physical channel demodulation multiplexer, the signal demultiplexing that is used for receiving goes out each downlink physical control channel and other physical channels;
The control signal processor is used for that the employed sub-frame information of downlink data transmission offers the physical channel demodulation multiplexer in time-domain resource information that downlink physical control channel the is transmitted residue subframe of indicated dispatching cycle;
Described receiving system receives the radiofrequency signal that the base station sends, carry out that radio frequency receives and processing such as analog-to-digital conversion after, transfer to the physical channel demodulation multiplexer.
According to another aspect of the present invention, the transmission method of scheduling control signaling of downlink in a kind of tdd systems comprises step:
A) in tdd systems, base station configuration uses two subframes to transmit downlink physical control channel in each field;
B) the described downlink physical control channel of base station transmits.
According to another aspect of the present invention, subscriber equipment receives the method for control signaling in a kind of tdd systems, comprises step:
A) in tdd systems, when base station configuration uses two subframes to transmit downlink physical control channel in each field, only receive scheduling control signaling of downlink in the subscriber equipment subframe therein, and in another subframe, only receive ascending scheduling control signaling;
B) subscriber equipment according to the downlink or uplink scheduling control signaling that is received correspondingly downlink data receiving or the emission upstream data.
According to another aspect of the present invention, subscriber equipment receives the method for control signaling in a kind of tdd systems, comprises step:
A) in tdd systems, when base station configuration uses two subframes to transmit downlink physical control channel in each field, do not transmitting separately in the subframe of scheduling control signaling of downlink, subscriber equipment detects earlier whether the ascending scheduling control signaling transmission is arranged, if the ascending scheduling control signaling transmission is arranged, subscriber equipment continues to detect whether the scheduling control signaling of downlink transmission is arranged; If there is not the ascending scheduling control signaling transmission, subscriber equipment stops to detect the downlink physical control channel of current subframe.Do not transmitting separately in the subframe of ascending scheduling control signaling, subscriber equipment detects earlier whether the scheduling control signaling of downlink transmission is arranged.If the scheduling control signaling of downlink transmission is arranged, subscriber equipment continues to detect whether the ascending scheduling control signaling transmission is arranged; If there is not the scheduling control signaling of downlink transmission, subscriber equipment stops to detect the downlink physical control channel of current subframe;
B) subscriber equipment according to the downlink or uplink scheduling control signaling that is received correspondingly downlink data receiving or the emission upstream data.
According to another aspect of the present invention, the transmission method of scheduling control signaling of downlink in a kind of tdd systems comprises step:
A) in alternative tdd frame structure, the part running time-frequency resource of base station configuration in descending pilot frequency time slot transmits downlink physical control channel;
B) described downlink physical control channel is transmitted in the base station in described descending pilot frequency time slot.
Adopt first method proposed by the invention, can reduce the expense of downlink physical control channel effectively, thereby improve the availability of frequency spectrum of system.Adopt second method proposed by the invention, can reduce the complexity that subscriber equipment receives downlink physical control channel effectively, thereby improve the stand-by time of subscriber equipment.Adopt the third method proposed by the invention, can effectively utilize the running time-frequency resource of system, thereby improve the availability of frequency spectrum of system.
Description of drawings
Fig. 1 is the frame structure of LTE system descending FDD and general TDD;
Fig. 2 is the frame structure of LTE A-TDD system;
Fig. 3 is the up-downgoing allocation example of LTE A-TDD system;
Fig. 4 is the up-downgoing allocation example of the general TDD of LTE system;
Fig. 5 is the equipment drawing of base station scheduling resource and emission control signaling;
Fig. 6 is the equipment drawing of subscriber equipment processing controls signaling;
Fig. 7 is the schematic diagram of embodiment one;
Fig. 8 is an example of base station transmitter hardware block diagram;
Fig. 9 is an example of subscriber equipment receiver hardware block diagram;
Figure 10 is the schematic diagram of embodiment two;
Figure 11 is the schematic diagram of embodiment three.
Embodiment
The present invention proposes the transmission equipment and the method for scheduling control signaling of downlink in three kinds of tdd systems.
Method one: number in remaining dispatching cycle has been indicated in transmission in downlink physical control channel
Reportedly fail the time-domain resource information of employed subframe
This method comprises step:
A) in tdd systems, the base station is transmitted time-domain resource information and is indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle in downlink physical control channel;
B) the described downlink physical control channel of base station transmits.
In the step a) of this method, be meant the downgoing time interval that is scheduled at subscriber equipment dispatching cycle.In LTE A-TDD system, two kinds of dividing mode there is dispatching cycle.A kind of mode be with a field as a dispatching cycle, another kind of mode is to be the starting point of dispatching cycle with first descending sub frame of going upward to behind the descending transfer point, and is the terminal point of dispatching cycle with the subframe 0 of next field.Be assigned as example with up-downgoing shown in Figure 3.In Fig. 3, subframe 0 (301), DwPTS (302), subframe 3 (307), subframe 4 (308), subframe 5 (309) and subframe 6 (310) are used for transmitting downlink data, and UpPTS (304), and subframe 1 (305), subframe 2 (306) are used for transmit ascending data.According to the dispatching cycle of first kind of mode shown in the dispatching cycle among Fig. 31, comprise subframe 0, subframe 3, subframe 4, subframe 5, subframe 6.According to the dispatching cycle of the second way shown in the dispatching cycle among Fig. 32, comprise subframe 3, subframe 4, subframe 5, the subframe 0 of subframe 6 and next field.It should be noted that DwPTS is not included in the above-mentioned description,,, can be regarded as the extension of subframe 0 if therefore be used for transmitting data because DwPTS only comprises an OFDM symbol.
In the general TDD of LTE system, be downlink transfer interval continuous in the radio frames dispatching cycle.Be assigned as example with up-downgoing shown in Figure 4.In Fig. 4, subframe 0 (401), subframe 1 (402), subframe 2 (403), subframe 5 (406), subframe 6 (407) and subframe 7 (408) are used for transmitting downlink data, and subframe 3 (404), subframe 4 (405), subframe 8 (409) and subframe 9 (410) are used for transmit ascending data.Dispatching cycle, for example subframe 0 as shown in Figure 4, and subframe 1 and subframe 2 can be used as a dispatching cycle, subframe 5, and subframe 6 and subframe 7 also can be used as a dispatching cycle.
In the method, the data of base station transmission relative user equipment in the subframe of transmission downlink physical control channel are indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle with the time domain resource information simultaneously in downlink physical control channel.The length of this time-domain resource information can be fixed length (promptly irrelevant with the subframe position of downlink physical control channel transmission), also can be elongated (promptly the subframe position with the downlink physical control channel transmission is relevant).Time-domain resource information can elongated main cause be in dispatching cycle, and the data of subscriber equipment are not transmitted before the subframe of downlink physical control channel transmission.It should be noted that in fixed length described in this patent and elongated time-domain resource information be under the prerequisite of given up-downgoing allocation proportion.
Time-domain resource information can be indicated in two ways.First kind is bitmap (Bitmap) mode, promptly indicates pairing subframe whether the corresponding downstream transfer of data is arranged with a bit.This mode is very flexible, can support the situation of downlink data discontinuous transmission in dispatching cycle.Another mode is the number of the employed subframe of indication.Under this mode, require downlink data transmission continuously in dispatching cycle of certain subscriber equipment.
Because the length of time-domain resource information can be fixed length and elongated two kinds, indicating mode can adopt bitmap and number dual mode simultaneously, hereinafter four kinds of possible combinations is described in more detail.In the following description, setting in the dispatching cycle has N descending sub frame, is designated as DL respectively
i, 0≤i≤N-1.In the up-downgoing allocation example of LTE A-TDD system for example corresponding and shown in Figure 3, N=5.Corresponding to dispatching cycle 1, DL
0Be subframe 0, DL
1Be subframe 3, DL
2Be subframe 4, DL
3Be subframe 5, DL
4Be subframe 6.Corresponding to dispatching cycle 2, DL
0Be subframe 3, DL
1Be subframe 4, DL
2Be subframe 5, DL
3Be subframe 6, DL
4Be the subframe in the next field 0.Corresponding to the up-downgoing allocation example of the general TDD of LTE shown in Figure 3 system, corresponding and first dispatching cycle, DL
0Be subframe 0, DL
1Be subframe 1, DL
2Be subframe 2; Correspondence and second dispatching cycle, DL
0Be subframe 5, DL
1Be subframe 6, DL
2Be subframe 7.And set subscriber equipment at DL
j, detect corresponding downlink physical control channel among 0≤j≤N-1.
Combination one: the length of time-domain resource information is fixed, and indicates with bitmap.Under this mode, indicate other subframes except that the subframe of downlink physical control channel place in dispatching cycle whether to transmit the data of the pairing subscriber equipment of this downlink physical control channel with bitmap.Under this mode, indicate DL with N-1 bit
i, whether 0≤i≤N-1 has also transmitted the downlink data of this subscriber equipment among i ≠ j.For example can use DL
i=1 indicates at DL
iIn transmitted the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment.Can certainly use DL
i=1 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn transmitted the downlink data of this subscriber equipment.It should be noted that under this combination DL
i, the information of 0≤i＜j can be provided with arbitrarily, and this is because in this dispatching cycle, the downlink data of subscriber equipment is from DL
jBegin transmission.
Combination two: the length of time-domain resource information is fixed, and indicates with the number of employed subframe.Time-domain resource information under this mode be in dispatching cycle the transmission except that the subframe of downlink physical control channel place the number of subframe of data of the pairing subscriber equipment of this downlink physical control channel.Under this mode, use regularly
Individual bit is indicated DL
i, the downlink data that whether has also transmitted this subscriber equipment among j＜i≤N-1 (wherein
Indication is to the x operation that rounds up).Setting the indicated value of running time-frequency resource is M.Then M=0 indicates DL
i, j＜i≤N-1 is this user's downlink data not all; M=1 indicates DL
J+1In this user's downlink data is arranged; M=2 indicates DL
J+1And DL
J+2In this user's downlink data is arranged; The rest may be inferred.
Combination three: the variable-length of time-domain resource information, and indicate with bitmap.Under this mode, indicate other subframes after inherent downlink physical control channel place subframe dispatching cycle whether to transmit the data of the pairing subscriber equipment of this downlink physical control channel with the bitmap of variable-length.Under this mode, indicate DL with N-j-1 bit
i, whether also transmitted the downlink data of this subscriber equipment among j＜i≤N-1.For example can use DL
i=1 indicates at DL
iIn transmitted the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment.Can certainly use DL
i=1 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn transmitted the downlink data of this subscriber equipment.
Combination four: the variable-length of time-domain resource information, and indicate with the number of employed subframe.Time-domain resource information under this mode be after inherent downlink physical control channel place subframe dispatching cycle transmission the number of subframe of data of the pairing subscriber equipment of this downlink physical control channel.Under this mode, use
Individual bit is indicated DL
i, whether also transmitted the downlink data of this subscriber equipment among j＜i≤N-1.Setting the indicated value of running time-frequency resource is M.Then M=0 indicates DL
i, j＜i≤N-1 is this user's downlink data not all; M=1 indicates DL
J+1In this user's downlink data is arranged; M=2 indicates DL
J+1And DL
J+2In this user's downlink data is arranged; The rest may be inferred.This combination and combination two difference with combination two in indicate time-domain resource information with fixing length, and in this combination, the length of time-domain resource information depends on the position of transmitting with downlink physical control channel.
It should be noted that this method does not limit corresponding and same subscriber equipment, the downlink data that transmits in the different subframes in same dispatching cycle is united and is encoded or encode respectively.Simultaneously this method does not limit these different subframes yet and belongs to same HARQ process and still belong to different HARQ processes.
In the method, the operation of subscriber equipment is as follows.
A) in tdd systems, subscriber equipment detects downlink physical control channel;
C) subscriber equipment reads downlink data according to the employed sub-frame information of downlink data transmission in the time-domain resource information of transmitting in the downlink physical control channel residue subframe of indicated dispatching cycle.
In step a), subscriber equipment at first detects downlink physical control channel.Subscriber equipment can detect the interior downlink physical control channel of all descending sub frames in dispatching cycle, also can be by a network configuration subscriber equipment test section part descending sub frame.The position of the concrete descending sub frame that need to detect is broadcasted in the base station in D-BCH (perhaps S-BCH), be that the subscriber equipment of serving BS (Serving Node B) all can detect downlink physical control channel according to this configuration information with this base station like this.The base station also can dispose the position of the descending sub frame that each subscriber equipment need detect by high-level signaling separately in addition.
In step b), when subscriber equipment detects in certain subframe the base station when this subscriber equipment has sent downlink physical control channel, subscriber equipment reads this downlink physical control channel, and the position that obtains downlink data employed subframe in this dispatching cycle by time-domain resource information, thereby subscriber equipment can read the corresponding downstream data.
In the equipment drawing of base station scheduling resource and emission control signaling, the control signaling maker module 502 of base station is embodiment of the present invention as shown in Figure 5.Thereby the Scheduler module of base station 501 determines how to give each subscriber equipment with resource block assignments according to the CQI of subscriber equipment report and the data traffic information of subscriber equipment; The control signaling maker module 502 of base station produces one or more downlink physical control channels according to the situation of resource block assignments, and transmission time-domain resource information is indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle in each downlink physical control channel; Launch each downlink physical control channel last base station in emitter 503.Concrete base station hardware block diagram provides in an embodiment.
The equipment drawing of subscriber equipment processing controls signaling as shown in Figure 6, the control signal processor module 603 of subscriber equipment is embodiment of the present invention.601 receiving systems receive the radiofrequency signal that the base station sends, and carry out processing back demultiplexings in module 602 physical channel demodulation multiplexers such as radio frequency reception and analog-to-digital conversion and go out each downlink physical control channel and other physical channels.In module 603 control signal processors, the employed sub-frame information of downlink data transmission offers module 602 physical channel demodulation multiplexers in the residue subframe of the dispatching cycle that subscriber equipment is indicated with the time-domain resource information of transmitting in the downlink physical control channel, thereby subscriber equipment can read the corresponding downstream data.Concrete subscriber equipment receives hardware block diagram and provides in an embodiment.
Method two: base station configuration uses two subframes to transmit downlink physical control in each field
Channel
This method comprises step:
A) in tdd systems, base station configuration uses two subframes to transmit downlink physical control channel in each field;
B) the described downlink physical control channel of base station transmits.
The position of employed in the method two subframes can be fixed, and also can be disposed by network.When using two fixing subframes to transmit, a kind of mode is to transmit downlink physical control channel in subframe 0 with in first subframe after being up to descending transfer point.With LTEA-TDD system shown in Figure 3 is example, and downlink physical control channel transmits in subframe 0 (301) and subframe 3 (307).When disposing by network, the position of two subframes that are used for transmitting downlink physical control channel is broadcasted in the base station in D-BCH (perhaps S-BCH), be that the subscriber equipment of serving BS (Serving Node B) all can detect downlink physical control channel according to this configuration information with this base station like this.The base station also can be notified the position of two subframes of each user device transmissions downlink physical control channel by high-level signaling separately in addition.
Type to the downlink physical control channel that transmitted in two subframes mainly contains three kinds of settings.
Be provided with one: without any restriction, promptly scheduling control signaling of downlink and ascending scheduling control signaling all can transmit to the type of the downlink physical control channel that transmitted in two subframes.This mode offers the flexibility of base station scheduling maximum.
Be provided with two: only transmit scheduling control signaling of downlink in the subframe therein, and in another subframe, only transmit ascending scheduling control signaling.With first subframe transmission downlink physical control channel in subframe 0 and after being up to descending transfer point is example, a kind of mode is to transmit ascending scheduling control signaling in subframe 0, and transmits scheduling control signaling of downlink in first subframe after being up to descending transfer point.Under this mode, subscriber equipment only need carry out relevant detection according to the type of the control signaling that will detect in specific subframe.For example in above-mentioned example, in subframe 0, subscriber equipment only need detect downlink physical control channel according to the possible form of ascending scheduling control signaling; And in first subframe after being up to descending transfer point, subscriber equipment only need detect downlink physical control channel according to the possible form of scheduling control signaling of downlink.
Be provided with three: do not transmit scheduling control signaling of downlink separately in the subframe therein, and in another subframe, do not transmit ascending scheduling control signaling separately.Under this mode, an if subscriber equipment existing scheduling control signaling of downlink in a field, ascending scheduling control signaling is arranged again, satisfying under the situation about regularly requiring, the base station can select a subframe in two subframes to transmit two kinds of downlink physical control channels simultaneously; Perhaps when since regularly concern that these two control signalings can not be transmitted in same subframe the time, base station transmitting downlink control signal and upstream control signaling respectively in two subframes.The timing relationship here is meant because the factors such as frame structure of the processing time of base station or subscriber equipment and TDD system cause the base station is sent the restriction of the timing position of downlink physical control channel.And when subscriber equipment only has scheduling control signaling of downlink or ascending scheduling control signaling in a field, then can only in certain specific subframe, transmit, and independent scheduling control signaling of downlink is different with the pairing subframe of independent ascending scheduling control signaling.With first subframe transmission downlink physical control channel in subframe 0 and after being up to descending transfer point is example, do not transmit scheduling control signaling of downlink in the subframe 0 separately, do not transmit ascending scheduling control signaling separately and be up in first subframe behind the descending transfer point.When a subscriber equipment existing scheduling control signaling of downlink in a field, ascending scheduling control signaling is arranged again, to satisfy under the situation about regularly requiring, the base station can select a subframe in two subframes to transmit two kinds of downlink physical control channels simultaneously; When since regularly concern that these two control signalings can not be transmitted in same subframe the time, transmitting downlink control signal in first subframe after being up to descending transfer point of base station, and subframe 0 in, transmit upstream control signaling.And when subscriber equipment only had scheduling control signaling of downlink in a field, downlink physical control channel was only transmitted in first subframe after being up to descending transfer point in the base station; And when subscriber equipment only had ascending scheduling control signaling in a field, the base station is transmission downlink physical control channel in subframe 0 only.The operation of subscriber equipment is as follows.Do not transmitting separately in the subframe of scheduling control signaling of downlink, subscriber equipment detects earlier whether the ascending scheduling control signaling transmission is arranged.If the ascending scheduling control signaling transmission is arranged, subscriber equipment continues to detect whether the scheduling control signaling of downlink transmission is arranged; If there is not the ascending scheduling control signaling transmission, subscriber equipment stops to detect the downlink physical control channel of current subframe.Do not transmitting separately in the subframe of ascending scheduling control signaling, subscriber equipment detects earlier whether the scheduling control signaling of downlink transmission is arranged.If the scheduling control signaling of downlink transmission is arranged, subscriber equipment continues to detect whether the ascending scheduling control signaling transmission is arranged; If there is not the scheduling control signaling of downlink transmission, subscriber equipment stops to detect the downlink physical control channel of current subframe.
It should be noted that above-mentioned in question scheduling control signaling of downlink does not comprise the ACK/NAK of downlink transfer.For ACK/NAK, two kinds of transmission meanss are arranged.A kind of mode is that ACK/NAK is fixed on transmission in two subframes one.With first subframe transmission downlink physical control channel in subframe 0 and after being up to descending transfer point is example, and fixedly ACK/NAK transmits in subframe 0.Another mode is to transmit in any one that ACK/NAK can be in two subframes, but specific to each subscriber equipment, the base station can be selected according to the requirement of timing relationship in the employed subframe of downlink transfer ACK/NAK, or is configured by the base station.
Method three: use the part running time-frequency resource in the descending pilot frequency time slot (DwPTS) to transmit descending
Physical control channel
This method comprises step:
A) in alternative tdd frame structure, the part running time-frequency resource of base station configuration in descending pilot frequency time slot transmits downlink physical control channel;
B) described downlink physical control channel is transmitted in the base station in described descending pilot frequency time slot.
Owing to have only near 72 subcarriers the frequency center to be used for transmitting P-SCH among the DwPTS, therefore transmit downlink physical control channel with the parton carrier wave among the DwPTS in the method.The downlink physical control channel that can be used for being transmitted can comprise scheduling control signaling of downlink, ascending scheduling control signaling and to the affirmation information (ACK/NACK) of uplink data sending.
The part running time-frequency resource that the base station disposes among the DwPTS in D-BCH (perhaps S-BCH) transmits downlink physical control channel.For example, the subcarrier that the base station can dispose among the DwPTS except being used for transmitting P-SCH transmits scheduling control signaling of downlink, and ascending scheduling control signaling is in these three kinds of signalings of affirmation information (ACK/NACK) of uplink data sending one or more.
For subscriber equipment, when subscriber equipment is known when having transmitted scheduling control signaling of downlink and ascending scheduling control signaling among the DwPTS, subscriber equipment also needs to detect scheduling control signaling of downlink and ascending scheduling control signaling among the DwPTS except detecting scheduling control signaling of downlink and the ascending scheduling control signaling in descending sub frame.When only being used for transferring ACK/NAK among the DwPTS, subscriber equipment just need detect it when only it receives ACK/NAK among the DwPTS when base station configuration.
Embodiment
This part has provided three embodiment of this invention.Too tediously long for fear of the description that makes this patent, in the following description, omitted the detailed description of function that the public is known or device etc.
First embodiment:
Present embodiment transmits the time-domain resource information of having indicated the employed subframe of transfer of data in remaining dispatching cycle in downlink physical control channel corresponding to the base station.
As shown in Figure 7, subframe 0 (701), DwPTS (702), subframe 3 (708), subframe 4 (709), subframe 5 (310) and subframe 6 (711) are used for transmitting downlink data, and UpPTS (704), and subframe 1 (705), subframe 2 (706) are used for transmit ascending data.Comprise subframe 3 dispatching cycle according to the second way mentioned above, subframe 4, subframe 5, the subframe 0 (712) of subframe 6 and next field.
The operation of base station is as described below.In the present embodiment, set the base station at the downlink physical control channel (707) of subframe 3 transmission to certain subscriber equipment.This downlink physical control channel is arranged in several OFDM symbols of subframe 3 beginnings.And set the base station and be this subscriber equipment in subframe 3, transmitting downlink data in subframe 4 and the subframe 5.Set the base station and transmit time-domain resource information according to the mode of combination mentioned above three, promptly the bitmap of transmission of variable length is indicated running time-frequency resource information.Then in the present embodiment, the running time-frequency resource information of base station transmits 4 bits is used to refer in subframe 4, and whether subframe 5 has transmitted the data of this subscriber equipment in the subframe 0 of subframe 6 and next field.In the present embodiment, the downlink data that base station transmits " 1100 " is used to refer to this subscriber equipment transmits in subframe 4 and subframe 5, but not transmission in the subframe 0 of subframe 6 and next field.
The operation of subscriber equipment is as described below.Subscriber equipment at first detects downlink physical control channel.In the present embodiment, subscriber equipment has detected the base station and has issued its downlink physical control channel in subframe 3.Subscriber equipment reads this downlink physical control channel, and obtain this subscriber equipment has also been transmitted in the base station in subframe 4 and subframe 5 downlink data by time-domain resource information " 1100 ", thereby subscriber equipment was informed in this dispatching cycle, the base station is that this subscriber equipment is in subframe 3, subframe 4, with transmitting downlink data in the subframe 5, so subscriber equipment can correspondingly read downlink data.
Fig. 8 is the example that base station transmitter of the present invention is equipped with hardware block diagram.As shown in the figure, the base station generates one or more downlink physical control channels (801), and transmission time-domain resource information is indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle in downlink physical control channel; Then it is carried out chnnel coding and interweaves (802), rate-matched (803) is next carried out QAM modulation (804), inputoutput multiplexer (809) then to signal; The base station is carried out chnnel coding to the user's data (805) of current scheduling and is interweaved (806), and rate-matched (807) is then carried out QAM modulation (808) to signal, and inputoutput multiplexer (809); Multiplexer (809) arrives control information and data multiplex together, OFDM modulation (IFFT) (810) are carried out to multiplexed signals in the base station then, add Cyclic Prefix (811), steering D/A conversion (812) is at last by radio frequency sending set (813) and antenna (814) emission.
Fig. 9 is the example that subscriber equipment of the present invention receives hardware block diagram.Subscriber equipment receives from signal of base station by antenna (901) and radio-frequency transmitter (902), through mould/number conversion (903), removes Cyclic Prefix (904), carries out OFDM demodulation (FFT) (905) and imports demodulation multiplexer (906); Subscriber equipment is at first handled the downlink physical control channel of demodulation multiplexer (906) output, it is carried out QAM demodulation (907), separate rate-matched (908), deinterleaving and channel decoding (909), the position that obtains downlink data employed subframe in this dispatching cycle in the time-domain resource information from the downlink physical control channel of deciphering out (910), thereby subscriber equipment can be correspondingly from demodulation multiplexer (906) on corresponding running time-frequency resource reading of data, carry out QAM demodulation (911) then, separate rate-matched (912), deinterleaving and channel decoding (913) obtain user data (914) at last.
Second embodiment:
Present embodiment uses two subframes to transmit downlink physical control channel in each field corresponding to base station configuration, and do not transmit scheduling control signaling of downlink separately in the subframe therein of base station, and in another subframe, do not transmit ascending scheduling control signaling separately.In the middle of three all examples, subframe 0, subframe 3, subframe 4, subframe 5 and subframe 6 are descending sub frame, and subframe 1 and subframe 2 are sub-frame of uplink.In addition, the base station uses subframe 0 and subframe 3 to transmit downlink physical control channel, and does not transmit scheduling control signaling of downlink separately in the subframe 0, and does not transmit ascending scheduling control signaling in the subframe 3 separately.
In example one, transmitted the ascending scheduling control signaling (1001) of certain subscriber equipment in the downlink physical control channel that transmit the base station in subframe 0 (1002), and this ascending scheduling control signaling indication subscriber equipment sends upstream data in subframe 2 (1004).For this subscriber equipment, in subframe 0, subscriber equipment detects earlier whether the ascending scheduling control signaling transmission is arranged.In this example, subscriber equipment detects the ascending scheduling control signaling (1001) of base station transmits, and whether the dimension subscriber equipment continues to detect the scheduling control signaling of downlink transmission, and does not find the corresponding downstream scheduling control signaling.Subscriber equipment transmit ascending data in subframe 2 then.
In example two, transmitted the scheduling control signaling of downlink (1013) of certain subscriber equipment in the downlink physical control channel that transmit the base station in subframe 3 (1014), and this scheduling control signaling of downlink indication subscriber equipment downlink data receiving in subframe 4 (1015) and subframe 5 (1016).For this subscriber equipment, in subframe 3, subscriber equipment detects earlier whether the scheduling control signaling of downlink transmission is arranged.In this example, subscriber equipment detects the scheduling control signaling of downlink (1013) of base station transmits, and whether the dimension subscriber equipment continues to detect the ascending scheduling control signaling transmission, and does not find corresponding ascending scheduling control signaling.Subscriber equipment downlink data receiving in subframe 4 and subframe 5 then.
In example three, the ascending scheduling control signaling and the scheduling control signaling of downlink (1020) of certain subscriber equipment have been transmitted in the downlink physical control channel that transmit the base station simultaneously in subframe 0 (1021), and this ascending scheduling control signaling indication subscriber equipment sends upstream data in subframe 2 (1023), this scheduling control signaling of downlink indication subscriber equipment downlink data receiving in subframe 3 (1024) and subframe 4 (1025).For this subscriber equipment, in subframe 0, subscriber equipment detects earlier whether the ascending scheduling control signaling transmission is arranged.In this example, subscriber equipment detects the ascending scheduling control signaling of base station transmits, so subscriber equipment continue to detect whether the scheduling control signaling of downlink transmission is arranged, and detects the corresponding downstream scheduling control signaling then.Subscriber equipment transmit ascending data in subframe 2 then, and in subframe 3 and subframe 4 downlink data receiving.
The 3rd embodiment:
Present embodiment uses the part running time-frequency resource in the descending pilot frequency time slot (DwPTS) to transmit downlink physical control channel corresponding to the base station.In the present embodiment, that transmission is descending ACK/NAK.
As shown in figure 11,, the base station configuration subscriber equipment detects the ACK/NAK among the DwPTS.So when subscriber equipment sends upstream data in subframe 2 (1101) after, the ACK/NAK of subscriber equipment detected transmission in DwPTS (1102).It should be noted that the descending ACK/NAK shown in Figure 11 only is the ACK/NAK at this subscriber equipment.Subscriber equipment judges whether data retransmission according to the information among the ACK/NAK then.
Claims (42)
1. the transmission method of scheduling control signaling of downlink in the tdd systems comprises step:
A) in tdd systems, the base station is transmitted time-domain resource information and is indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle in downlink physical control channel;
B) the described downlink physical control channel of base station transmits.
2. method according to claim 1 is characterized in that be a field described dispatching cycle in the LTEA-TDD system.
3. method according to claim 1, it is characterized in that be the starting point of dispatching cycle with first descending sub frame of going upward to behind the descending transfer point described dispatching cycle in the LTEA-TDD system, and be the terminal point of dispatching cycle with the subframe 0 of next field.
4. method according to claim 1 is characterized in that being described dispatching cycle downlink transfer interval continuous in the radio frames in the general TDD of LTE system.
5. method according to claim 1, it is characterized in that the base station the transmission downlink physical control channel subframe in the transmission relative user equipment data.
6. method according to claim 1, the transmission method that it is characterized in that described running time-frequency resource are to indicate other subframes except that the subframe of downlink physical control channel place in dispatching cycle whether to transmit the data of the pairing subscriber equipment of this downlink physical control channel with bitmap.
7. method according to claim 6 is characterized in that setting N descending sub frame was arranged in the dispatching cycle, is designated as DL respectively
i, 0≤i≤N-1 sets subscriber equipment simultaneously at DL
j, detect corresponding downlink physical control channel among 0≤j≤N-1, then time-domain resource information is indicated DL with N-1 bit
i, whether 0≤i≤N-1 has also transmitted the downlink data of this subscriber equipment among i ≠ j.
8. method according to claim 7 is characterized in that using DL
i=1 indicates at DL
iIn transmitted the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment.
9. method according to claim 7 is characterized in that using DL
i=1 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn transmitted the downlink data of this subscriber equipment.
10. method according to claim 1, the transmission method that it is characterized in that described running time-frequency resource are with the information of the regular length number of subframe of data of the pairing subscriber equipment of this downlink physical control channel of having indicated the transmission except that the subframe of downlink physical control channel place in dispatching cycle.
11. method according to claim 10 is characterized in that setting N descending sub frame was arranged in the dispatching cycle, is designated as DL respectively
i, 0≤i≤N-1 sets subscriber equipment simultaneously at DL
j, detect corresponding downlink physical control channel among 0≤j≤N-1, then time-domain resource information " log
2N
Individual bit is indicated DL
i, whether also transmitted the downlink data of this subscriber equipment among j＜i≤N-1.
12. method according to claim 11, it is characterized in that setting the indicated value of running time-frequency resource is M.Then M=0 indicates DL
i, j＜i≤N-1 is this user's downlink data not all; M=1 indicates DL
J+1In this user's downlink data is arranged; M=2 indicates DL
J+1And DL
J+2In this user's downlink data is arranged; The rest may be inferred.
13. method according to claim 1, the transmission method that it is characterized in that described running time-frequency resource are to indicate other subframes after inherent downlink physical control channel place subframe dispatching cycle whether to transmit the data of the pairing subscriber equipment of this downlink physical control channel with the bitmap of variable-length.
14. method according to claim 13 is characterized in that setting N descending sub frame was arranged in the dispatching cycle, is designated as DL respectively
i, 0≤i≤N-1 sets subscriber equipment simultaneously at DL
j, detect corresponding downlink physical control channel among 0≤j≤N-1, then time-domain resource information is indicated DL with N-j-1 bit
i, whether also transmitted the downlink data of this subscriber equipment among j＜i≤N-1.
15. method according to claim 14 is characterized in that using DL
i=1 indicates at DL
iIn transmitted the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment.
16. method according to claim 15 is characterized in that using DL
i=1 indicates at DL
iIn do not transmit the downlink data of this subscriber equipment, and use DL
i=0 indicates at DL
iIn transmitted the downlink data of this subscriber equipment.
17. method according to claim 1, the transmission method that it is characterized in that described running time-frequency resource are with the information of the variable-length number of subframe of data of the pairing subscriber equipment of this downlink physical control channel of having indicated transmission after inherent downlink physical control channel place subframe dispatching cycle.
18. method according to claim 17 is characterized in that setting N descending sub frame was arranged in the dispatching cycle, is designated as DL respectively
i, 0≤i≤N-1 sets subscriber equipment simultaneously at DL
j, detect corresponding downlink physical control channel among 0≤j≤N-1, then time-domain resource information " log
2(N-j)
Individual bit is indicated DL
i, whether also transmitted the downlink data of this subscriber equipment among j＜i≤N-1.
19. method according to claim 18, it is characterized in that setting the indicated value of running time-frequency resource is M.Then M=0 indicates DL
i, j＜i≤N-1 is this user's downlink data not all; M=1 indicates DL
J+1In this user's downlink data is arranged; M=2 indicates DL
J+1And DL
J+2In this user's downlink data is arranged; The rest may be inferred.
20. subscriber equipment receives the method for controlling signaling in the tdd systems, comprises the steps:
A) in tdd systems, subscriber equipment detects downlink physical control channel;
B) subscriber equipment reads downlink data according to the employed sub-frame information of downlink data transmission in the time-domain resource information of transmitting in the downlink physical control channel residue subframe of indicated dispatching cycle.
21. the equipment of base station transmits scheduling control signaling of downlink comprises radiating portion in the tdd systems, also comprises:
Scheduler module, thus be used for determining how to give each subscriber equipment with resource block assignments according to the CQI of subscriber equipment report and the data traffic information of subscriber equipment;
Control signaling maker module, be used for producing one or more downlink physical control channels, and transmission time-domain resource information is indicated the employed subframe of downlink data transmission in the residue subframe of dispatching cycle in each downlink physical control channel according to the situation of resource block assignments;
Described emitter is transmitted into each downlink physical control channel in the wireless channel.
22. the equipment of subscriber equipment processing controls signaling comprises receiving unit in the tdd systems, also comprises:
The physical channel demodulation multiplexer, the signal demultiplexing that is used for receiving goes out each downlink physical control channel and other physical channels;
The control signal processor is used for that the employed sub-frame information of downlink data transmission offers the physical channel demodulation multiplexer in time-domain resource information that downlink physical control channel the is transmitted residue subframe of indicated dispatching cycle;
Described receiving system receives the radiofrequency signal that the base station sends, carry out that radio frequency receives and processing such as analog-to-digital conversion after, transfer to the physical channel demodulation multiplexer.
23. the transmission method of scheduling control signaling of downlink in the tdd systems comprises step:
A) in tdd systems, base station configuration uses two subframes to transmit downlink physical control channel in each field;
B) the described downlink physical control channel of base station transmits.
24. method according to claim 23 is characterized in that the fixed-site of described two subframes.
25. method according to claim 24 is characterized in that described two subframes are respectively subframe 0 and first subframe after being up to descending transfer point.
26. method according to claim 23 is characterized in that the position of described two subframes is disposed by network.
27. method according to claim 26 is characterized in that described two subframes are broadcasted in the base station in D-BCH (perhaps S-BCH) position.
28. method according to claim 26 is characterized in that the base station notifies the position of described two subframes of each subscriber equipment separately by high-level signaling.
29. method according to claim 23 is characterized in that described two subframes both can transmit scheduling control signaling of downlink, can transmit ascending scheduling control signaling again.
30. method according to claim 23 is characterized in that only transmitting scheduling control signaling of downlink in one of them subframe, and only transmit ascending scheduling control signaling in another subframe in described two subframes.
31. method according to claim 30, it is characterized in that first subframe after described two subframes are respectively subframe 0 and are being up to descending transfer point, in subframe 0, transmit ascending scheduling control signaling, and transmit scheduling control signaling of downlink in first subframe after being up to descending transfer point.
32. method according to claim 23 is characterized in that not transmitting scheduling control signaling of downlink in one of them subframe separately, and do not transmit ascending scheduling control signaling separately in another subframe in described two subframes.
33. method according to claim 32, it is characterized in that first subframe after described two subframes are respectively subframe 0 and are being up to descending transfer point, do not transmit scheduling control signaling of downlink in the subframe 0 separately, do not transmit ascending scheduling control signaling separately and be up in first subframe behind the descending transfer point.
34. method according to claim 23 is characterized in that ACK/NAK is fixed on transmission in described two subframes one.
35. method according to claim 34 is characterized in that fixedly ACK/NAK transmits in subframe 0.
36. subscriber equipment receives the method for controlling signaling in the tdd systems, comprises step:
A) in tdd systems, when base station configuration uses two subframes to transmit downlink physical control channel in each field, only receive scheduling control signaling of downlink in the subscriber equipment subframe therein, and in another subframe, only receive ascending scheduling control signaling;
B) subscriber equipment according to the downlink or uplink scheduling control signaling that is received correspondingly downlink data receiving or the emission upstream data.
37. subscriber equipment receives the method for controlling signaling in the tdd systems, comprises step:
A) in tdd systems, when base station configuration uses two subframes to transmit downlink physical control channel in each field, do not transmitting separately in the subframe of scheduling control signaling of downlink, subscriber equipment detects earlier whether the ascending scheduling control signaling transmission is arranged, if the ascending scheduling control signaling transmission is arranged, subscriber equipment continues to detect whether the scheduling control signaling of downlink transmission is arranged; If there is not the ascending scheduling control signaling transmission, subscriber equipment stops to detect the downlink physical control channel of current subframe.Do not transmitting separately in the subframe of ascending scheduling control signaling, subscriber equipment detects earlier whether the scheduling control signaling of downlink transmission is arranged.If the scheduling control signaling of downlink transmission is arranged, subscriber equipment continues to detect whether the ascending scheduling control signaling transmission is arranged; If there is not the scheduling control signaling of downlink transmission, subscriber equipment stops to detect the downlink physical control channel of current subframe;
B) subscriber equipment according to the downlink or uplink scheduling control signaling that is received correspondingly downlink data receiving or the emission upstream data.
38. the transmission method of scheduling control signaling of downlink in the tdd systems comprises step:
A) in alternative tdd frame structure, the part running time-frequency resource of base station configuration in descending pilot frequency time slot transmits downlink physical control channel;
B) described downlink physical control channel is transmitted in the base station in described descending pilot frequency time slot.
39., it is characterized in that described downlink physical control channel is a scheduling control signaling of downlink according to the described method of claim 38.
40., it is characterized in that described downlink physical control channel is an ascending scheduling control signaling according to the described method of claim 38.
41., it is characterized in that described downlink physical control channel is the affirmation information (ACK/NACK) to uplink data sending according to the described method of claim 38.
42., it is characterized in that the part running time-frequency resource that the base station disposes among the DwPTS transmits downlink physical control channel in D-BCH (perhaps S-BCH) according to the described method of claim 38.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101005695A CN101287281A (en) | 2007-04-11 | 2007-04-11 | Transmission apparatus and method for scheduling control signaling of downlink in wireless communication system |
| PCT/KR2008/002057 WO2008127038A1 (en) | 2007-04-11 | 2008-04-11 | Device and method for transmitting downlink scheduling control signalling in wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101005695A CN101287281A (en) | 2007-04-11 | 2007-04-11 | Transmission apparatus and method for scheduling control signaling of downlink in wireless communication system |
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| CN101287281A true CN101287281A (en) | 2008-10-15 |
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|---|---|---|---|
| CNA2007101005695A Pending CN101287281A (en) | 2007-04-11 | 2007-04-11 | Transmission apparatus and method for scheduling control signaling of downlink in wireless communication system |
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| WO (1) | WO2008127038A1 (en) |
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2008
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