CN101247164B - Transmission method of descending control signaling in TDS-CDMA evolution system - Google Patents
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Abstract
The present invention discloses a transmission method of descending control signaling in time-division synchronous code division multiple access system, according to system frames constructional features, descending control signaling transmits only one time in each wireless field frame field, and can be transmitted in random descending time slot, and is with multiple transmission modes. UE determines descending control signaling time slot place according to system setting, and receives descending control signaling in corresponding time slot place, and completes self service data link control according to received descending control signaling. Control signaling spending and public reference symbol spending are saved effectively by using project of the invention, at the same time The present invention is good for using beam forming closed-loop multiple antennae transmit technology.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a transmission method of a downlink control signaling in a time division synchronous code division multiple access evolution system.
Background
The Time Division Synchronous Code Division multiple Access (TD-SCDMA) technology is the only technical standard in the three international standards of the third generation mobile communication system that adopts the Time Division Duplex (TDD) mode. The TD-SCDMA supports the transmission of uplink and downlink asymmetric services, and has greater flexibility in the utilization of frequency spectrum. The TD-SCDMA system comprehensively adopts advanced technologies in wireless communication such as intelligent antenna, uplink synchronization, joint detection, software radio and the like, so that the system has higher performance and spectrum utilization rate.
With the development of society and the progress of technology, the demand of people for mobile communication is continuously increasing, and the mobile communication system is objectively required to provide data transmission service with larger capacity, higher speed and lower time delay. To meet this increasing demand, the third generation partnership project (3GPP, 3)rdGeneration Partnership Project) proposes a scheme of TD-SCDMA evolution system.
In the TD-SCDMA evolution system scheme, it is currently determined that the downlink channel adopts the Orthogonal Frequency Division multiple access (OFDM) technology. The OFDM technology supports system bandwidths of 1.25MHz, 1.6MHz, 2.5MHz, 5MHz, 10MHz, and 20MHz, and a frame structure compatible with the TD-SCDMA system may be adopted, as shown in fig. 1, a wireless frame of 10ms is composed of two half frames of 5ms, each half frame is composed of seven ordinary Time slots (TS, Time Slot) and three special Time slots, and the ordinary Time slots are numbered TS0 to TS 6. Wherein, the ordinary time slot is used for transmitting control signaling and service data, and the three special time slots are respectively: a Downlink pilot time Slot (DwPTS, Downlink pilot time Slot) for transmitting Downlink synchronization information of the system; an Uplink Pilot Time Slot (UpPTS, Uplink Pilot Time Slot) for transmitting Uplink synchronization information accessed by a user; and a transition guard time slot (GP) for providing a time interval for transition of the downlink transmission time slot to the uplink transmission time slot.
The Transmission Time Interval (TTI) length of the TD-SCDMA evolved system is defined as the length of a common Time slot, i.e. 0.675 ms. TTI is also called a subframe of TD-SCDMA evolution system, in which the concept of subframe and slot is the same. Wherein, a common slot is formed by 9 OFDM symbols or 8 OFDM symbols, and is configured corresponding to Cyclic Prefixes (CP) with different lengths: when a short-length normal CP is adopted, one normal time slot is composed of 9 OFDM symbols; when the extended CP having a long length is used, one normal slot is composed of 8 OFDM symbols.
In the Wideband Code Division Multiple Access (WCDMA) evolution scheme, a frame structure of the system is shown in fig. 2, and a 10ms radio frame is composed of 20 equal-length radio slots, and the number of the slots is 0 to 19. The length of each time slot is 0.5ms, every two time slots form a subframe, namely TTI of a WCDMA evolution system, and the length of the subframe is 1 ms. One of the slots is composed of 7 OFDM symbols or 6 OFDM symbols, and is respectively configured corresponding to CPs with different lengths: when a short-length normal CP is used, one slot is composed of 7 OFDM symbols; when the extended CP having a long length is employed, one slot is composed of 6 OFDM symbols.
In a WCDMA evolution system and a TD-SCDMA evolution system, downlink control signaling can be divided into downlink shared control signaling and downlink dedicated control signaling. The downlink shared control signaling is sent by a base station and can be received by all terminals (UE) in a cell; the downlink dedicated control signaling is also sent by the base station, and its receiving target is a specific UE or a group of UEs. The downlink shared control signaling is used for a Multi-antenna transmission mode for transmitting resources and service data allocated by the system for service data transmission, for example, the system may allocate the service data to transmit in a multiple-input multiple-Output (MIMO) mode or a transmit diversity mode, or may allocate the service data to transmit in a single-antenna mode or an intelligent antenna beamforming mode. The downlink dedicated control signaling is used to indicate information such as a coding rate, digital modulation, and a Hybrid automatic Repeat Request (HARQ) used by a certain UE or a group of UEs to transmit service data.
Currently, for the WCDMA evolution system, it has been basically determined that the downlink control signaling is transmitted in the first m (m ≦ 3) OFDM symbols of one TTI. The method has the advantages that the UE can quickly receive the downlink control signaling to obtain the sending resource position of the service data of the UE, so that the service data can be quickly received. If the UE receives the downlink shared control signaling, the UE knows that the data which is not sent to the UE in the TTI is not received, and can also choose not to receive other data in the TTI, thereby saving the battery expense of the UE.
The standard of the TD-SCDMA evolution system is in research and development, and there is no specific technical scheme for the transmission mode of the downlink control signaling. At present, the TD-SCDMA evolution system tends to adopt the same downlink control signaling transmission strategy as the WCDMA evolution system. Because the frame structures of the TD-SCDMA evolution system and the WCDMA evolution system are different, if the TD-SCDMA evolution system adopts the same downlink control signaling transmission strategy as the WCDMA evolution system, the following problems may be caused:
(1) the downlink control signaling overhead is large: for a WCDMA evolution system, the first m (m is less than or equal to 3) OFDM symbols are used for transmitting downlink control signaling in one TTI, m is set to be equal to 3, and when one TTI comprises 14 OFDM symbols at most, the proportion of the downlink control signaling overhead in one TTI is 21%; for the TD-SCDMA evolution system, if the same strategy is also used for downlink control signaling transmission, when m is set to be equal to 3 and one TTI includes 9 OFDM symbols at most, the proportion of the downlink control signaling overhead in one TTI will be 33.3%, which is too large for the WCDMA evolution system.
(2) The common reference symbol overhead is too large: demodulating the downlink shared control signaling requires demodulating the common reference symbols containing the pilot information, and if the downlink shared control signaling is transmitted in each TTI, the common reference symbols are correspondingly required to be transmitted in each TTI. For the TD-SCDMA evolution system, the requirement of channel state information measurement required for its scheduling can be satisfied only by sending downlink shared control signaling in one downlink time slot in one wireless field, so the common reference symbol also needs to be sent in only one downlink time slot in one wireless field. If the TD-SCDMA evolution system adopts the same control signaling transmission strategy as the WCDMA evolution system and sends the downlink shared control signaling and the common reference symbol in every TTI, the overhead of the common reference symbol will be too large.
(3) Influence the use of closed-loop multi-antenna transmission techniques such as beamforming: for a TD-SCDMA evolution system, a dedicated reference symbol needs to be used for a closed-loop multi-antenna transmission technology using beamforming, which may cause an excessive overhead of the overall reference symbol if a common reference symbol and a dedicated reference symbol exist in one TTI at the same time, and may affect the performance of the closed-loop multi-antenna transmission technology using beamforming if the dedicated reference symbol is not used or the number of the dedicated reference symbols is reduced.
Therefore, the downlink control signaling transmission strategy of the WCDMA evolution system cannot be effectively applied to the TD-SCDMA evolution system, and there is no effective transmission method for the downlink control signaling in the TD-SCDMA evolution system in the prior art.
Disclosure of Invention
The invention provides a transmission method of downlink control signaling in a TD-SCDMA evolution system, which is used for solving the problem that the TD-SCDMA evolution system in the prior art can not effectively transmit the downlink control signaling.
A transmission method of downlink control signaling in a time division synchronous code division multiple access evolution system comprises the following steps:
the downlink control signaling is transmitted only once per radio half-frame, and,
the downlink control signaling is transmitted in one downlink time slot of each wireless half frame or in a resource block used by the transmission of the related terminal service: when the downlink control signaling is downlink shared control signaling, the downlink shared control signaling is transmitted in one downlink time slot of each wireless half frame; and when the downlink control signaling is the downlink special control signaling, the downlink special control signaling is transmitted in one downlink time slot of each wireless half frame or transmitted in a resource block used by the transmission of the related terminal service.
Preferably, the downlink timeslot is: the first downlink timeslot in a wireless field, or downlink timeslots other than the first downlink timeslot in a wireless field.
Preferably, the downlink timeslots except the first downlink timeslot in a wireless field are: the first downlink timeslot after the uplink and downlink switching point.
Preferably, when the downlink control signaling is transmitted in a downlink time slot other than the first downlink time slot in a wireless field, the method further includes: the system carries the time slot position for transmitting the downlink control signaling in the message broadcasted to the terminal.
Preferably, the downlink control signaling is transmitted using all resource blocks or a part of resource blocks of the downlink timeslot.
Preferably, when the downlink timeslot is a first downlink timeslot of the wireless half frame, the downlink control signaling uses a resource block other than a resource block occupied by a system broadcast channel for transmission.
Preferably, the downlink control signaling includes downlink shared control signaling and downlink dedicated control signaling, and the method includes:
the downlink shared control signaling and the downlink dedicated control signaling are transmitted in the same time slot; or,
the downlink shared control signaling and the downlink dedicated control signaling are not transmitted in the same time slot, and the downlink dedicated control signaling is transmitted in a resource block used by the transmission of the related terminal service data.
Preferably, when the downlink control signaling is transmitted in the first downlink timeslot of a wireless half frame, the method further includes: and the terminal receives the downlink control signaling in the first downlink time slot of a wireless field.
Preferably, when the downlink control signaling is transmitted in a downlink time slot other than the first downlink time slot in a wireless field, the method further includes: and the terminal obtains the time slot position for transmitting the downlink control signaling by reading the broadcast information and receives the downlink control signaling at the time slot position.
Preferably, when the downlink control signaling is transmitted in the first downlink time slot after the uplink and downlink switching point, the terminal obtains the location information of the uplink and downlink switching point by reading the broadcast information, and receives the downlink control signaling in the first downlink time slot after the uplink and downlink switching point.
Preferably, the downlink control signaling includes a downlink shared control signaling and a downlink dedicated control signaling, and when the downlink dedicated control signaling is transmitted in a resource block used for transmitting related terminal service data, the method further includes:
and the terminal obtains the time slot position of the resource block used by the service data transmission through the received downlink shared control signaling, and obtains a downlink special control signaling from the resource block used by the service data transmission.
The method provided by the invention can transmit the downlink control signaling only once in each wireless field according to the frame structure characteristics of the TD-SCDMA evolution system, can transmit in any downlink time slot, and has various transmission modes. By adopting the scheme provided by the invention, the downlink control signaling is transmitted only once in each wireless half frame, so that the downlink control signaling overhead and the public reference symbol overhead can be effectively saved, and meanwhile, the method is beneficial to the use of closed-loop multi-antenna transmission technologies such as beam forming and the like.
Drawings
FIG. 1 is a frame structure diagram of a TD-SCDMA evolution system;
FIG. 2 is a diagram of a frame structure of a WCDMA evolution system;
fig. 3 is a schematic diagram of a frame structure when downlink shared control signaling and downlink dedicated control signaling are both transmitted in a TS0 timeslot of a wireless half frame according to a first embodiment of the present invention;
fig. 4 is a schematic diagram of a frame structure in which downlink shared control signaling is transmitted in a TS0 of a wireless half frame and downlink dedicated control signaling is transmitted in a resource block used for transmitting related UE service data in a TS4 according to a second embodiment of the present invention;
fig. 5 is a frame structure diagram of a third embodiment of the present invention when downlink shared control signaling and downlink dedicated control signaling are both transmitted in a TS4 of a wireless half frame;
fig. 6 is a frame structure diagram of a third embodiment of the present invention when downlink shared control signaling and downlink dedicated control signaling are both transmitted in a TS3 of a wireless half frame;
fig. 7 is a schematic diagram of a frame structure in which downlink shared control signaling is transmitted in a TS4 of a wireless half frame and downlink dedicated control signaling is transmitted in a resource block used for transmitting related UE service data in a TS5 according to a fourth embodiment of the present invention;
fig. 8 is a frame structure diagram of a fourth embodiment of the present invention, in which a downlink shared control signaling is transmitted in a TS3 of a wireless half frame, and a downlink dedicated control signaling is transmitted in a resource block used for transmitting related UE service data in a TS 5.
Detailed Description
The method provided by the invention is characterized in that according to the frame structure characteristic of the TD-SCDMA evolution system, the downlink control signaling is transmitted only once in each wireless field, can be transmitted in any downlink time slot, and has a plurality of transmission modes: when the downlink control signaling is transmitted in the first downlink time slot of each wireless half frame, namely TS0, all resource blocks or part of resource blocks except the resource block used by the broadcast information are used for transmission, at the moment, the UE fixedly receives the downlink control signaling in TS0 according to the system setting, and completes the transmission control of the related service data according to the received downlink control signaling; when the downlink control signaling is transmitted in any time slot other than the TS0, the time slot position for transmitting the downlink control signaling needs to be carried in the broadcast information, at this time, the UE obtains the time slot position for transmitting the downlink control signaling by reading the broadcast information, and receives the downlink control signaling in the corresponding time slot position according to the obtained time slot position for transmitting the downlink control signaling; when the downlink control signaling is fixed in the first downlink time slot after the uplink and downlink switching point for transmission, the UE obtains the position of the uplink and downlink switching point by reading the broadcast information, and receives the downlink control signaling in the first downlink time slot after the position of the uplink and downlink switching point. Particularly, when a wireless field transmits both downlink shared control signaling and downlink dedicated control signaling, the downlink dedicated control signaling may be transmitted in the same time slot as the downlink shared control signaling or may not be transmitted in the same time slot as the downlink shared control signaling, at this time, the downlink dedicated control signaling is transmitted in a resource block used for transmitting service data of a relevant UE, the UE determines the time slot position for transmitting the downlink control signaling according to system settings, and completes its own service data transmission control according to the received downlink control signaling.
The main implementation principle, the specific implementation mode and the corresponding beneficial effects of the technical scheme of the invention are explained in detail in the following with the help of various drawings.
In the invention, the downlink control signaling is transmitted only once in each wireless field and can be transmitted by using any downlink time slot of the wireless field. The UE determines the time slot position for transmitting the downlink control signaling according to the setting of the system, receives the downlink control signaling at the determined time slot position for transmitting the downlink control signaling, and completes service data transmission control, such as resource allocation, a service data transmission multi-antenna transmission mode, and operations of coding rate, digital modulation, HARQ and the like adopted by service data transmission according to the received downlink control signaling.
In the TD-SCDMA evolution system, the downlink control signaling includes downlink shared control signaling and downlink dedicated control signaling, the downlink shared control signaling is transmitted in any downlink time slot of a wireless field, the downlink dedicated control signaling may be transmitted in the same time slot as the downlink shared control signaling, or may not be transmitted in the same time slot as the downlink shared control signaling, and at this time, the downlink dedicated control signaling is transmitted in the resource block used for transmitting the related UE service data.
The resource block is a basic unit of data transmission in the OFDM technology used by the downlink channel of the TD-SCDMA evolution system, and is a time frequency unit.
The related UE is a certain UE or a group of UEs related to information indications such as coding rate, digital modulation, and HARQ used for transmitting service data carried in the downlink dedicated control signaling.
As shown in fig. 3, this figure is a schematic diagram of a frame structure in which downlink shared control signaling and downlink dedicated control signaling are both transmitted in a TS0 of a wireless half frame according to an embodiment of the present invention. The TS0 is used to transmit the broadcast information of the system, the downlink shared control signaling and the downlink dedicated control signaling can only be transmitted using resource blocks other than the resource block used by the broadcast information, and the TS1 to TS6 are traffic channel slots.
At this time, the UE may determine, according to the setting of the system, that the fixed timeslot position for transmitting the downlink shared control signaling and the downlink dedicated control signaling is TS0, so as to receive the downlink shared control signaling and the downlink dedicated control signaling in TS0, and obtain information such as the sending resource position of its own service data according to the received downlink shared control signaling, thereby being capable of quickly receiving the service data. If the UE knows that the data which is not sent to the UE in the wireless field is not received after receiving the downlink shared control signaling, the UE can also choose not to receive other data in the wireless field, thereby saving the battery expense of the UE.
In fig. 3, the downlink shared control signaling and the downlink dedicated control signaling are transmitted using all resource blocks except the resource block occupied by the broadcast information in TS 0. The downlink shared control signaling and the downlink dedicated control signaling may also be transmitted by using only a part of resource blocks other than the resource block used by the broadcast information in TS 0.
In the second embodiment of the present invention, the downlink dedicated control signaling may also be transmitted in a resource block used for transmitting the relevant UE service data, instead of being transmitted in the same time slot as the downlink shared control signaling, as shown in fig. 4, the downlink shared control signaling is transmitted in TS0 of a wireless half frame, and all resource blocks except the resource block used for broadcasting information in TS0 are used; the downlink dedicated control signaling is transmitted in the resource block used for the transmission of the traffic data of the relevant UE in TS 4. At this time, the UE receives the downlink shared control signaling in TS0 according to the setting of the system, and performs corresponding service transmission control according to the received downlink shared control signaling; the UE acquires the position of a resource block used by the transmission of related UE service data through the information carried in the received downlink shared control signaling, thereby determining the position for transmitting the downlink dedicated control signaling; when receiving the service data, the UE obtains the downlink dedicated control signaling from the resource block used for the service data transmission, and completes the adjustment and setting of the coding rate, digital modulation, HARQ, and the like used for the service data transmission according to the downlink dedicated control signaling.
In fig. 4, the downlink dedicated control signaling and the traffic data of the UE are transmitted in TS4, and all resource blocks of TS4 are used, accordingly, the downlink dedicated control signaling and the traffic data of the UE can be transmitted in any downlink time slot except TS0, and all resource blocks or part of resource blocks of the downlink time slot can be used.
In particular, in the wireless half frame shown in fig. 4, the TS4 includes 9 resource blocks, and in practical applications, the number of resource blocks included in each slot is set according to the bandwidth of a practical system.
In the third embodiment of the present invention, the downlink shared control signaling and the downlink dedicated control signaling may also be transmitted in any downlink timeslot other than TS0, as shown in fig. 5, the downlink shared control signaling and the downlink dedicated control signaling are transmitted in TS4 of a wireless half frame, and all resource blocks of TS4 are used.
Correspondingly, the downlink shared control signaling and the downlink dedicated control signaling may also be transmitted by using only a part of resource blocks of the TS 4.
When the downlink shared control signaling and the downlink dedicated control signaling are transmitted in the downlink timeslot outside the TS0, the broadcast information needs to carry the timeslot positions for transmitting the downlink shared control signaling, or the downlink shared control signaling and the downlink dedicated control signaling, at this time, the UE obtains the timeslot positions for transmitting the downlink shared control signaling, or the downlink shared control signaling and the downlink dedicated control signaling by reading the broadcast information, and receives the downlink shared control signaling at the corresponding timeslot positions according to the obtained timeslot positions for transmitting the downlink shared control signaling, if the broadcast information carries the timeslot positions for transmitting the downlink dedicated control signaling, the UE directly receives the downlink dedicated control signaling at the corresponding timeslot positions, if the broadcast information does not carry the timeslot positions for transmitting the downlink dedicated control signaling, and the downlink dedicated control signaling is transmitted in the resource blocks used for transmitting the related UE service data, the UE firstly acquires the position of a resource block used by the transmission of the service data of the relevant UE according to the information carried in the received downlink shared control signaling, and the UE acquires the downlink dedicated control signaling from the resource block used by the transmission of the service data when receiving the service data. And the UE completes the transmission control of the related service data according to the received downlink shared control signaling and the downlink special control signaling.
When the downlink shared control signaling and the downlink dedicated control signaling are fixedly positioned in the first downlink time slot after the uplink and downlink switching point for transmission, the UE obtains the position information of the uplink and downlink switching point by reading the broadcast information, receives the downlink shared control signaling and the downlink dedicated control signaling according to the first downlink time slot of the system which is arranged after the uplink and downlink switching point, and completes the transmission control of the related service data according to the received downlink shared control signaling and the downlink dedicated control signaling.
In particular, since uplink and downlink timeslots may be asymmetric in the TD-SCDMA evolved system, the uplink and downlink switching points may be located at any position between TS1 and TS6, in fig. 5, the position of the uplink and downlink switching points is between TS3 and TS4, and the downlink shared control signaling and the downlink dedicated control signaling are transmitted in TS4 of the radio field. Accordingly, as shown in fig. 6, when the uplink and downlink switching point is located between TS2 and TS3, the corresponding downlink shared control signaling and downlink dedicated control signaling are transmitted in TS3 of the radio field.
In the fourth embodiment of the present invention, the scheme provided by the present invention further includes a situation that a downlink shared control signaling is transmitted in any time slot outside the TS0 of a wireless half frame, and a downlink dedicated control signaling is transmitted in a resource block used for transmitting related UE service data, as shown in fig. 7, the downlink shared control signaling is transmitted in the TS4 of a wireless half frame, and only a part of resource blocks in the TS4 are used; the downlink dedicated control signaling is transmitted in the resource block used for the related UE traffic data transmission in TS 5. The broadcast information sent to the UE may only include the timeslot position TS4 for transmitting the downlink shared control signaling, at this time, the UE reads the timeslot position TS4 for transmitting the downlink shared control signaling in the broadcast information according to the setting of the system, and receives the downlink shared control signaling in TS4, and performs corresponding service data transmission control; then, according to the information carried in the downlink shared control signaling, the transmission position TS5 of the resource block used by the relevant UE service data transmission is obtained, when the UE receives the service data in TS5, the downlink dedicated control signaling is obtained from the resource block used by the service data transmission, and the adjustment and setting of the coding rate, the digital modulation, the HARQ and the like for the service data transmission are completed according to the downlink dedicated control signaling.
Correspondingly, the downlink shared control signaling may also be transmitted in any downlink time slot other than TS4, the downlink dedicated control signaling and the related UE service data may also be transmitted in any downlink time slot other than TS0, and all resource blocks or part of resource blocks of the downlink time slot may be used.
In this embodiment, when the downlink shared control signaling is fixedly located in the first downlink timeslot after the uplink and downlink switching point for transmission, the downlink shared control signaling transmission timeslot changes with the position change of the uplink and downlink switching point. As shown in fig. 8, when the uplink and downlink switching point is located between TS2 and TS3 of the wireless half frame, the downlink shared control signaling is transmitted in TS3, and the downlink dedicated control signaling is transmitted in the resource block used for transmitting the related UE traffic data in TS 5.
In particular, in the wireless half frame shown in fig. 7 or fig. 8, the TS5 includes 9 resource blocks, and in practical applications, the number of resource blocks that can be included in each slot is set according to the bandwidth of a practical system.
In particular, in the above embodiments, one wireless field transmits both the downlink shared control signaling and the downlink dedicated control signaling, and in practical application, one wireless field may also transmit only the downlink shared control signaling or the downlink dedicated control signaling.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A transmission method of downlink control signaling in a time division synchronous code division multiple access evolution system is characterized in that the method comprises the following steps:
the downlink control signaling is transmitted only once per radio half-frame, and,
the downlink control signaling is transmitted in one downlink time slot of each wireless half frame or in a resource block used by the transmission of the related terminal service: when the downlink control signaling is downlink shared control signaling, the downlink shared control signaling is transmitted in one downlink time slot of each wireless half frame; and when the downlink control signaling is the downlink special control signaling, the downlink special control signaling is transmitted in one downlink time slot of each wireless half frame or transmitted in a resource block used by the transmission of the related terminal service.
2. The method of claim 1, wherein the downlink time slot is: the first downlink timeslot in a wireless field, or downlink timeslots other than the first downlink timeslot in a wireless field.
3. The method of claim 2 wherein said downlink time slots other than the first downlink time slot in a radio field are: the first downlink timeslot after the uplink and downlink switching point.
4. The method of claim 2, wherein when said downlink control signaling is transmitted in a downlink time slot other than the first downlink time slot in a radio field, the method further comprises: the system carries the time slot position for transmitting the downlink control signaling in the message broadcasted to the terminal.
5. The method according to any of claims 1 to 4, wherein the downlink control signaling is transmitted using all resource blocks or a part of resource blocks of the downlink time slot.
6. The method according to any of claims 1 to 4, wherein when the downlink time slot is the first downlink time slot of the wireless half frame, the downlink control signaling uses a system broadcast channel to occupy resource blocks other than the resource blocks for transmission.
7. The method according to any of claims 1 to 4, wherein the downlink control signaling comprises downlink shared control signaling and downlink dedicated control signaling, the method comprising:
the downlink shared control signaling and the downlink dedicated control signaling are transmitted in the same time slot; or,
the downlink shared control signaling and the downlink dedicated control signaling are not transmitted in the same time slot, and the downlink dedicated control signaling is transmitted in a resource block used by the transmission of the related terminal service data.
8. The method according to any of claims 1 to 4, wherein when said downlink control signaling is transmitted in the first downlink timeslot of a radio field, the method further comprises: and the terminal receives the downlink control signaling in the first downlink time slot of a wireless field.
9. The method according to any of claims 1 to 4, wherein when said downlink control signaling is transmitted in a downlink time slot other than the first downlink time slot in a radio field, the method further comprises: and the terminal obtains the time slot position for transmitting the downlink control signaling by reading the broadcast information and receives the downlink control signaling at the time slot position.
10. The method according to any of claims 1 to 4, wherein when the downlink control signaling is transmitted in the first downlink time slot after the uplink and downlink switching point, the terminal obtains the location information of the uplink and downlink switching point by reading the broadcast information, and receives the downlink control signaling in the first downlink time slot after the uplink and downlink switching point.
11. The method according to any of claims 1 to 4, wherein the downlink control signaling comprises downlink shared control signaling and downlink dedicated control signaling, and when the downlink dedicated control signaling is transmitted in a resource block used for transmitting related terminal service data, the method further comprises:
and the terminal obtains the time slot position of the resource block used by the service data transmission through the received downlink shared control signaling, and obtains the downlink special control signaling from the resource block used by the service data transmission.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100640347A CN101247164B (en) | 2007-02-16 | 2007-02-16 | Transmission method of descending control signaling in TDS-CDMA evolution system |
| PCT/CN2008/000308 WO2008101401A1 (en) | 2007-02-16 | 2008-02-04 | Transmission method for downlink control signal in td-scdma evolution system |
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| CN101789839B (en) * | 2009-01-23 | 2013-12-18 | 大唐移动通信设备有限公司 | Method and system for realizing TD format data transmission based on antenna interface |
| CN101516104B (en) * | 2009-04-01 | 2011-01-19 | 华为技术有限公司 | Control signaling transmission method and system, base station and user equipment |
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| WO2002029990A1 (en) * | 2000-10-05 | 2002-04-11 | Samsung Electronics Co., Ltd | Tstd apparatus and method for a tdd cdma mobile communication system |
| CN1437337A (en) * | 2002-02-09 | 2003-08-20 | 华为技术有限公司 | Channel time sequence distributing method suitable for high-speed data transmission of time division duplex system |
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| WO2002029990A1 (en) * | 2000-10-05 | 2002-04-11 | Samsung Electronics Co., Ltd | Tstd apparatus and method for a tdd cdma mobile communication system |
| CN1437337A (en) * | 2002-02-09 | 2003-08-20 | 华为技术有限公司 | Channel time sequence distributing method suitable for high-speed data transmission of time division duplex system |
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