WO2011057550A1

WO2011057550A1 - Method and device for signal transmission

Info

Publication number: WO2011057550A1
Application number: PCT/CN2010/078508
Authority: WO
Inventors: 潘学明; 胡金玲; 肖国军; 张�杰; 王立波; 缪德山; 杨宇
Original assignee: 电信科学技术研究院
Priority date: 2009-11-10
Filing date: 2010-11-08
Publication date: 2011-05-19
Also published as: CN102025409A

Abstract

The present application discloses a method and device for signal transmission, and the method includes: determining a duplex mode of a User Equipment (UE), and performing signal transmission with the UE by the network side in a time division manner according to the duplex mode of the UE. On the basis of ensuring the system performance in one duplex mode, the present application introduces the access support for the UE of other duplex modes to the network side device, and is a communication scheme that can provide communication services in multiple duplex modes.

Description

Signal transmission method and device

The present invention relates to wireless communication technologies, and in particular, to a signal transmission method and device. Background technique

For cellular mobile communication systems, the duplex mode is the multiplexing mode of the uplink and downlink; for mobile communication devices (base stations or UEs), the duplex mode is the multiplexing mode of the transmit and receive links. TDD (Time Division Duplex) mode and FDD (Frequency Division Duplex) mode are two basic duplex modes in wireless communication transmission, supported in LTE (Long Terra Evolution) system. TDD mode and FDD mode. In the TDD mode, the uplink and downlink use different time intervals for signal transmission; in the FDD mode, the uplink and downlink use different working bands for uplink and downlink signals. The existing duplex mode is shown in FIG. 1 and FIG. 2. FIG. 1 is a schematic diagram of the principle of the existing duplex mode, FIG. 2 is a schematic diagram of the time-frequency relationship of the existing duplex mode, and T in FIG. , R represents the frequency.

For the existing duplex mode adopted by the cellular system: TDD mode means that the uplink and downlink use the same working frequency band, and the uplink and downlink signals are transmitted at different time intervals, and there is a GP between the uplink and the downlink (Guard Period) , protection interval); FDD mode means that the uplink and downlink use different working frequency bands, and the uplink and downlink signals are transmitted at the same time, and there is a guard bandwidth (Guard Band) between the uplink and the downlink.

In the existing TDD mode cellular mobile communication system, the mobile communication device (base station or UE) operates in the TDD mode, and the device needs to have a transceiving switch; in the existing FDD mode cellular mobile communication system, mobile communication The device (base station or UE) works in FDD mode, and a transceiver duplex filter is required in the device.

In the LTE system, the FDD mode and the TDD mode adopt different frame structures, as described below.

FIG. 3 is a schematic diagram of a frame structure of an LTE FDD system, as shown in FIG. 3, in an LTE FDD system. In the frame structure, a radio frame has a length of 10 ms, contains 10 subframes, and each subframe has 2 slots, each slot is 0.5 ms, and Ts is a sampling interval.

The frame structure of the LTE TDD system is slightly more complicated. Figure 4 is a schematic diagram of the frame structure of the LTE TDD system. As shown in Figure 4, the length of a radio frame is also 10 ms, and may include one or two special subframes. The sub-frame is divided into three time slots: DwPTS (Downlink Pilot Time Slot), GP and UpPTS (Uplink Pilot Time slot). Subframe #0, subframe #5 and DwPTS are always used for downlink transmission, and other subframes can be used for uplink transmission or downlink transmission as needed.

The three slot length configurations of the special subframe are shown in Table 1. All the special subframe configuration formats are shown in Table 1.

Configuration format of special subframes in LTE TDD system

For the frame structure of the LTE TDD system, another important parameter is the configuration of the upstream and downstream subframes. The specific configuration is shown in Table 2. Table 7 lists the seven configuration modes, D indicates that it is used for downlink transmission, and U indicates For uplink transmission, S indicates that the subframe is a special subframe, and three slots of DwPTS, GP, and UpPTS are encapsulated. Uplink and downlink subframe configuration mode in LTE TDD system

The DwPTS can transmit a PCFICH (Physical Control Format Indicator Channel), a PDCCH (Physical Downlink Control Channel), a PHICH (Physical HARQ Indicator Channel), and a PDSCH (Physical Downlink Shared Channel). , Physical downlink access channel, and P-SCH (Primary Synchronization Channel), UpPTS can transmit PRACH (Physical Random Access Channel) and SRS (Sounding Reference Signal) The PUSCH (Physical Uplink Shared Channel) and the PUCCH (Physical Uplink Control Channel) cannot be transmitted.

The shortcoming of the prior art is that there is no technical solution for providing the FDD mode and the TDD mode in the communication system at the same time. Summary of the invention

The technical problem to be solved by the present invention is to provide a signal transmission method and device.

A signal transmission method is provided in the embodiment of the present invention, including:

Determining the duplex mode of the UE;

The network side performs signal transmission with the UE according to the duplex mode of the UE in a time division manner.

A network side device is provided in the embodiment of the present invention, including:

a duplex determination module, configured to determine a duplex mode of the UE; The signal transmission module is configured to perform signal transmission with the UE according to a duplex mode of the UE in a time division manner.

A user equipment is provided in the embodiment of the present invention, including:

a duplex determination module, configured to determine a duplex mode of the UE;

The signal transmission module is configured to perform signal transmission in the duplex mode of the UE and the network side in a time division manner.

The beneficial effects of the present invention are as follows:

The technical solution provided by the embodiment of the present invention increases the access performance of the network side device to other duplex mode UEs on the basis of ensuring the performance of a duplex mode system, and is capable of providing multi-duplex mode communication service. Communication plan. DRAWINGS

Figure 1 (a), (b), (c) is a schematic diagram of the principle of the duplex mode in the background art;

2 is a schematic diagram of a time-frequency relationship of an existing duplex mode in the background art;

3 is a schematic diagram of a frame structure of an LTE FDD system in the background art;

4 is a schematic diagram of a frame structure of an LTE TDD system in the background art;

FIG. 5 is a schematic flowchart of a signal transmission method according to an embodiment of the present invention; FIG.

6 is a schematic diagram of resource allocation when a FDD/TDD mode is mixed for signal transmission according to an embodiment of the present invention;

7 is a schematic flowchart of a cell search method according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a location of a synchronization signal when performing a cell search according to an embodiment of the present invention; FIG. 9 is a schematic flowchart of performing cell search by an FDD UE and a TDD UE according to an embodiment of the present invention; FIG. 10 is a duplex diagram of a UE according to an embodiment of the present invention; FIG. 11 is a schematic flowchart of a second method for acquiring duplex mode information of a UE according to an embodiment of the present invention; FIG. 12 is a schematic flowchart 3 of acquiring duplex mode information of a UE according to an embodiment of the present invention; FIG. 13 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description

In addition to the difference in frame structure, other differences between the FDD mode and the TDD mode in the LTE system mainly lie in the difference of the duplex mode itself, that is, the FDD mode uses consecutive subframes, and the TDD mode uplink subframe or downlink subframe is in time. It is discontinuous, which results in some differences in the uplink and downlink scheduling, retransmission timing and control processes of the two modes. However, in other basic transmission technologies, the FDD mode and the TDD mode are identical, which are the two. Further integration provides the condition that the FDD mode and the TDD mode can be provided simultaneously in the communication system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 5 is a schematic flowchart of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 5, the method may include the following steps:

Step 501: Determine a duplex mode of the UE.

Step 502: The network side performs signal transmission with the UE according to the duplex mode of the UE in a time division manner.

In the implementation, the network side performs signal transmission with the UE according to the duplex mode of the UE in a time division manner, and the method includes:

Signal transmission is performed with the UE according to the duplex mode of the UE on at least two non-continuous carriers, and the frequency interval between the carriers satisfies the uplink and downlink frequency interval requirements of the FDD mode.

In implementation, at least two non-contiguous carriers may be at least two non-contiguous TDD carriers. The following describes the FDD mode and the TDD mode in the duplex mode of the UE as an example. Fig. 6 is a schematic diagram of resource allocation when the FDD/TDD mode is mixed for signal transmission, which will be described below with reference to Fig. 6.

In implementation, there are at least two non-continuous TDD carriers in the communication system, such as TDD carrier 1 and TDD carrier 2 as shown in FIG. 6, and the frequency interval between the two carriers is equal to or greater than FDD. The uplink and downlink frequency interval of the mode. In the specific implementation, the uplink and downlink frequency interval of the FDD mode may be defined by the current stage of the radio frequency indicator, or may be redefined after the device level is improved in a certain stage in the future. Further, the method may further include:

Signaling with the UE on at least one other TDD carrier;

And/or, transmitting signals with the UE on at least one other FDD carrier.

That is, there may be at least one other TDD carrier in the communication system; and/or there may be at least one other FDD carrier, and the FDD carrier may be a unidirectional FDD carrier, such as a downlink carrier or The uplink carrier; or the FDD carrier that appears in pairs in both directions, that is, the uplink carrier and the downlink carrier wave.

In the implementation, the uplink and downlink subframe configurations of the two TDD carriers in each pair of non-contiguous TDD carriers may be different. For example, as shown in FIG. 6, the TDD carrier 1 is configured according to the uplink and downlink subframe configuration mode 2 in Table 2, and the TDD carrier 2 is configured according to the uplink and downlink subframe configuration mode 0 in Table 2.

In implementation, the subframes of two TDD carriers in each pair of non-contiguous TDD carriers may be different, and the subframe offset time is an integer multiple of the subframe length.

In the implementation, the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are not synchronized, and the uplink and downlink subframes are configured in the same manner;

Or, the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are synchronized, and the sub-frames are configured differently;

Or, the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are not synchronized, and the uplink and downlink subframes are configured differently.

For example, as shown in FIG. 6, the subframe of the TDD carrier 1 is not synchronized with the subframe of the TDD carrier 2, and the uplink and downlink subframes are configured in the same manner; or, the subframe of the TDD carrier 1 and the TDD carrier 2 The subframes are synchronized, and the uplink and downlink subframes are configured differently; or, the subframe of the TDD carrier 1 is not synchronized with the subframe of the TDD carrier 2, and the uplink and downlink subframes are configured differently.

In an implementation, any one of the at least two non-contiguous carriers may be scheduled for use by an LTE TDD UE or a single carrier LTE-A TDD UE;

Or, the at least two non-contiguous carriers on the transmission direction configured with the same subframe resource may be simultaneously scheduled for use by the LTE-ATDD UE that needs to support the large bandwidth transmission; Or, the transmission direction of the at least two non-contiguous carriers may be configured with different subframe resources. For example, for two TDD carriers as shown in FIG. 6, any subframe resources on each carrier. Both can be scheduled for use by TDD UEs, including the following three cases:

A), the subframe resources on a single carrier can be scheduled for use by any TDD UE;

B), the subframe resources configured with the same transmission direction on the two carriers can be simultaneously scheduled for use by the LTE-A TDD UE that needs to support large bandwidth transmission;

C), the subframe resources with different transmission directions configured on the two carriers can be simultaneously scheduled for use by the LTE-ATDD UE having the simultaneous reception and transmission capability (one carrier reception and the other carrier transmission) on the two carriers.

In an implementation, the subframe resources with opposite transmission direction configurations on the at least two non-contiguous carriers may be simultaneously scheduled for use by the FDD UE. For example, the subframe resources with opposite transmission direction configurations on TDD carrier 1 and TDD carrier 2 as shown in FIG. 6 can be simultaneously scheduled for use by the FDD UE.

In the implementation, the DRX (Discontinuous Reception) state may be configured for the FDD UE to reduce the power consumption of the UE.

For a better understanding of the application of the technical solution provided by the embodiment of the present invention, the UE that can support the TDD mode and the FDD mode is taken as an example for description.

1. The FDD UE or the TDD UE completes cell search and broadcast information reading in the system and camps in the cell.

FIG. 7 is a schematic flowchart of a method for a cell to perform cell search. As shown in FIG. 7, the cell performing cell search may include the following steps:

Step 701: The UE searches for a primary synchronization signal.

Step 702: The UE searches for at least two primary synchronization signal correlation peak positions and corresponding primary synchronization signal sequences in the relevant search window.

Step 703: If the UE is an FDD UE, the UE uses the relative position of one of the primary synchronization signals as a reference, and the relative position between the primary synchronization signal and the secondary synchronization signal according to the FDD protocol is used. Searching for the secondary synchronization signal; if the UE is a TDD UE, the UE searches for the secondary synchronization signal according to the relative positional relationship between the primary synchronization signal and the secondary synchronization signal specified by the TDD protocol based on the correlation peak position of one of the primary synchronization signals;

Step 704: If the secondary synchronization signal correlation peak position is searched, the cell initial search is completed, and the corresponding secondary synchronization signal sequence is identified; otherwise, the following primary synchronization signal correlation peak position is used as a reference, and step 703 is repeated until the cell initial search is completed. .

In implementation, the duplex mode supported by the UE may include two different ones in the following duplex modes: FDD mode, TDD mode, and half-duplex FDD mode.

In an implementation, before the UE searches for the primary synchronization signal, the method further includes: a synchronization signal specified by the system.

In an implementation, the synchronization signal may include a PSS (Primary Synchronization Signal) and an SSS (Secondary Synchronization Signal), and the synchronization signal sequence may include a PSS sequence and an SSS sequence.

In the implementation, the base station may not schedule the transmission of the downlink data packet on the time-frequency resources occupied by the PSS and the SSS.

Further explanation will be given below.

8 is a schematic diagram of a synchronization signal position when a UE performs a cell search. As shown in FIG. 8, a synchronization signal specified by an existing FDD system and a TDD system is simultaneously transmitted on a carrier that supports UE access in both FDD mode and TDD mode. Includes PSS and SSS.

The PSS sequences of the FDD system and the TDD system may be the same or different; the SSS sequences of the FDD system and the TDD system may be the same or different.

In the implementation, the UE implements the search for the primary synchronization signal according to the existing algorithm, and the UE searches for the correlation peak positions of the two primary synchronization signals within 5 ms, identifies the PSS sequences corresponding to the two peak positions, and completes the downlink OFDM (Orthogonal Frequency Division Multiplexing). , Orthogonal Frequency Division Multiplexing) Symbol synchronization, slot synchronization and CP length detection.

The UE can assume that one of the relevant bee position and PSS sequence is correctly searched and according to it The SSS sequence is searched for the relative OFDM symbol position between the SSS and the PSS specified in the protocol corresponding to the supported duplex mode (FDD mode or TDD mode), and the specific search algorithm may be an existing algorithm.

If the SSS sequence cannot be searched at the corresponding location, the SSS sequence is continuously searched for another PSS peak position and the PSS sequence; if the SSS sequence is searched for at the corresponding location, the UE successfully completes the PSS and SSS search, thereby obtaining Physical layer Cell ID (cell ID).

In the implementation, the base station may not schedule the transmission of the downlink data packet on the time-frequency resources occupied by the two sets of PSS and SSS.

FIG. 9 is a schematic flowchart of performing cell search by an FDD UE and a TDD UE, where:

The process of performing cell search by the FDD UE includes the following steps:

Step 901: The UE performs a PSS search.

Step 902: Search for PSS related peak positions and corresponding PSS sequences;

Step 903: Assuming that one of the correlation peak positions is the correct PSS position, searching for the SSS according to the positional relationship specified by the FDD protocol;

Step 904, searching for the SSS related peak position, determining whether the SSS sequence is identified, if yes, proceeding to step 905, otherwise proceeding to step 903;

Step 905: Complete a cell search.

The process of performing cell search by the TDD UE includes the following steps:

Step 906: The UE performs a PSS search.

Step 907: Search for two PSS related peak positions and corresponding PSS sequences;

Step 908: Assuming that one of the correlation peak positions is the correct PSS position, searching for the SSS according to the positional relationship specified by the TDD protocol;

Step 909, search for the SSS related peak position, determine whether the SSS sequence is identified, if yes, go to step 910, otherwise go to step 908;

Step 910: Complete a cell search.

2. The system learns the duplex mode supported by the UE (FDD mode or TDD mode).

The way the system learns the duplex mode supported by the UE is as follows: A, can be obtained during the random access process;

B. It may be obtained by reporting by the UE after the random access is completed, for example, by using an RRC (Radio Resource Control) process.

10 is a schematic flowchart of a first method for acquiring duplex mode information of a UE. As shown in FIG. 10, when acquiring duplex mode information of a UE, the following steps may be included:

Step 1001: The base station configures mutually orthogonal PRACH resources and/or mutually orthogonal preamble sequence sets for the UE in the first duplex mode and the UE in the second duplex mode.

Step 1002: The base station notifies, in the system broadcast, a PRACH resource and/or a preamble sequence set that can be used by the UE in the first duplex mode and the UE in the second duplex mode;

Step 1003: The base station detects a random access signal, where the random access signal is selected by the UE, after selecting the configuration information, selecting one of the PRACH resources that match its duplex mode, and/or selecting a preamble sequence set that matches its duplex mode. Post-initiated random access signal;

Step 1004: The base station determines, according to the PRACH time-frequency resource location and/or the preamble sequence of the random access signal, the UE's duplex mode.

In an implementation, the base station may configure mutual orthogonal PRACH resources for the first duplex mode UE and the second duplex mode UE on the uplink carrier that allows the first duplex mode and the second duplex mode hybrid access. / or a collection of preamble sequences that are orthogonal to each other.

In implementation, mutually orthogonal PRACH resources may be mutually orthogonal time domain resources and/or mutually orthogonal frequency domain resources.

In implementation, the duplex mode may include two different ones of the following duplex modes: FDD mode, TDD mode, and half-duplex FDD mode.

In a specific implementation, the base station configures mutually orthogonal PRACH resources and/or mutually orthogonal preamble sequence sets for the FDD UE and the TDD UE on the uplink carrier that allows the FDD mode and the TDD mode hybrid access, and performs FDD on the system broadcast. The UE and the TDD UE respectively notify the PRACH resource and/or preamble sequence set that they can use;

Then, after the FDD UE or the TDD UE learns the foregoing configuration information, select one of the PRACH resources that match its duplex mode and/or select a preamble sequence set that matches its duplex mode. T N2010/078508 One initiates random access;

The base station is thus able to determine whether the accessed UE is an FDD UE or a TDD UE according to the PRACH time-frequency resource location and/or the preamble sequence in which the random access signal is detected.

11 is a schematic flowchart of a second method for acquiring duplex mode information of a UE. As shown in FIG. 11, when acquiring UE duplex mode information, the following steps may be included:

Step 1101: The base station configures the same PRACH resource and the same preamble sequence set for the UE in the first duplex mode and the UE in the second duplex mode.

Step 1102: The base station notifies the configuration information in the system broadcast, where the configuration information includes a PRACH resource and a preamble sequence set that can be used by the UE in the first duplex mode and the UE in the second duplex mode.

Step 1103: The base station detects a random access signal, where the random access signal is a random access signal that is selected after the UE selects one of the PRACH resources after obtaining the configuration information, and selects one of the preamble sequence sets.

Step 1104: After detecting the random access signal, the base station sends a random access response message of the same format to the UE in the first duplex mode and the UE in the second duplex mode, and allocates the uplink transmission resource for the resource scheduling request of the subsequent UE. ;

Step 1105: The base station receives the UE duplex mode information reported by the UE on the allocated uplink transmission resource.

In a specific implementation, the base station configures the same PRACH resource and the same preamble sequence set for the FDD UE and the TDD UE on the uplink carrier that allows the FDD mode and the TDD mode hybrid access, and provides all UEs (including the FDD UE) in the system broadcast. And the TDD UE) notifying the PRACH resource and the preamble sequence set;

After obtaining the configuration information, the FDD UE or the TDD UE may select one of the notified PRACH resources and select one of the preamble sequence sets to initiate random access;

Then, the base station sends a random access response message of the same format to the FDD UE and the TDD UE; And allocating uplink transmission resources for resource scheduling requests of subsequent UEs;

At this time, the UE can report the supported duplex mode information on the allocated uplink transmission resource, for example, using the lbit information bit for reporting.

In another mode, the UE performs the uplink synchronization and the resource request by using the random access in the initial access process, and establishes an RRC connection with the base station in the subsequent process, and reports the UE capability information (including the UE version information and the UE level). Information, etc.).

Based on this manner, the present invention implements an acquisition scheme of UE duplex mode information, which will be described below.

FIG. 12 is a schematic flowchart of a third method for acquiring duplex mode information of a UE. As shown in FIG. 12, when acquiring UE duplex mode information, the following steps may be included:

Step 1201: The UE establishes an RRC connection with the base station.

Step 1202: The UE reports the duplex mode information of the UE when establishing an RRC connection.

In a specific implementation, the behavior of the base station and the UE in the initial random access process may be consistent with the existing system, but the UE reports the duplex mode information supported by the UE when the RRC connection is established with the base station, for example, using the lbit information bit to report.

Based on the same inventive concept, a network side device and a user equipment are also provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the foregoing signal transmission method, the implementation of the device may refer to the implementation of the method, and the method is repeated. No more fascination.

FIG. 13 is a schematic structural diagram of a network side device. As shown in FIG. 13, the network side device may include:

The duplex determination module 1301 is configured to determine a duplex mode of the UE.

The signal transmission module 1302 is configured to perform signal transmission with the UE according to the duplex mode of the UE in a time division manner.

In an implementation, the signal transmission module 1302 may be further configured to perform signal transmission with the UE according to the duplex mode of the UE on at least two non-contiguous carriers when the UE performs the signal transmission in the duplex mode of the UE. Transmission, the frequency interval between the carriers satisfies the uplink and downlink frequency interval requirements of the FDD mode. In implementation, the at least two non-continuous carriers may be at least two non-continuous TDD carriers.

In an implementation, the signal transmission module 1302 can be further configured to perform signal transmission with the UE on at least one other TDD carrier, and/or to perform signal transmission with the UE on at least one other FDD carrier.

In an implementation, the signal transmission module 1302 may be further configured to configure different uplink and downlink subframes of two TDD carriers in each pair of non-contiguous TDD carriers.

In an implementation, the signal transmission module 1302 may be further configured to synchronize the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers, and the subframe offset time is an integer multiple of the subframe length.

In an implementation, the signal transmission module 1302 may be further configured to make the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers out of synchronization, and the uplink and downlink subframes are configured in the same manner; or, each pair is discontinuous. The subframes of the two TDD carriers in the TDD carrier are synchronized, and the uplink and downlink subframes are configured differently; or, the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are not synchronized, and Line subframe configuration is different.

In an implementation, the signal transmission module 1302 may be further configured to use any one of the at least two non-contiguous carriers to be scheduled for use by an LTE TDD UE or a single-carrier LTE-A TDD UE; or, At least two non-contiguous carriers are configured with the same subframe resource in the transmission direction and simultaneously scheduled for use by the LTE-A TDD UE that needs to support the large bandwidth transmission; or, the LTE with the at least two discontinuous reception and transmission capabilities A TDD UE is used.

In an implementation, the signal transmission module 1302 may be further configured to simultaneously schedule the subframe resources whose transmission directions are opposite on the at least two non-contiguous carriers to be used by the FDD UE.

In an implementation, the signal transmission module 1302 may be further configured to configure a DRX state for the FDD UE by configuring the same subframe resource on the two carriers.

14 is a schematic structural diagram of a user equipment. As shown in FIG. 14, the UE may include: a duplex determination module 1401, configured to determine a duplex mode of the UE;

The signal transmission module 1402 is configured to adopt a time division manner according to the duplex mode of the UE and the network side Line signal transmission.

In an implementation, the signal transmission module 1402 may be further configured to perform signal transmission with the network side according to the FDD mode of the UE on at least two non-continuous carriers, where the frequency interval between the carriers meets the uplink and downlink frequency intervals of the FDD mode. Requirement; or signal transmission on the network side in the TDD mode of the UE on any one or two of the at least two non-continuous carriers.

In practice, the at least two non-continuous carriers may be at least two non-continuous TDD carriers.

In an implementation, the signal transmission module 1402 can be further configured to perform signal transmission with the network side on at least one other TDD carrier, and/or to perform signal transmission with the network side on at least one other FDD carrier.

For convenience of description, the various parts of the above described device are divided into various modules or units by function. Of course, the functions of the various modules or units may be implemented in one or more software or hardware in the practice of the invention.

The above embodiment describes the case where there are two carriers in the system. It should be noted that the scheme can also be extended to the case where there are two sets of carrier waves in the system, and the requirements of the two groups of waves can meet the requirements described above, and the specific design scheme is similar.

It can be seen from the above embodiments that in the technical solution provided by the embodiment of the present invention, the aggregation is performed by using two TDD carriers under certain restrictions, and different subframe resources are provided on the two carriers, wherein all the sub-frame resources are provided. The frame resources can be applied to the TDD UE access, and a part of the subframe resources can be applied to the FDD UE access.

In the guarantee of the performance of the TDD system, the system supports the FDD UE access and becomes a FDD/TDD fusion system. On the basis of ensuring the performance of a duplex mode system, the network side device is added to the access support of other duplex mode UEs, and is a communication scheme capable of providing multi-duplex mode communication services.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention may be employed in one or more A computer program product embodied on a computer usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more flows of the flowchart or in a block or blocks of the flowchart,

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device to perform a series of operational steps on a computer or other programmable device to produce computer-implemented processing for use on a computer or other programmable device. The instructions that are executed provide steps for implementing the functions specified in one or more blocks of the flowchart or in a block or blocks of the flowchart.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the <RTIgt; Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and modifications

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A signal transmission method, comprising:

Determining the duplex mode of the UE;

The method according to claim 1, wherein the network side performs signal transmission with the UE according to the duplex mode of the UE in a time division manner, including:

3. The method of claim 2 wherein said at least two non-continuous carriers are at least two non-continuous TDD carriers.

The method according to any one of claims 1 to 3, further comprising: performing signal transmission with the UE on at least one other TDD carrier;

And/or, transmitting signals with the UE on at least one other FDD carrier.

The method according to claim 3, wherein the uplink and downlink subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are configured differently.

6. The method according to claim 3, wherein the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are not synchronized, and the subframe offset time is an integer multiple of the subframe length.

The method according to claim 3, wherein the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are not synchronized, and the uplink and downlink subframes are configured in the same manner;

8. The method of claim 3, wherein

Scheduling any one of the at least two non-contiguous carriers to an LTE TDD UE or a single-carrier LTE-ATDD UE; Or, configuring the subframe resources with the same transmission direction on the at least two non-contiguous carriers to be simultaneously scheduled for use by the LTE-ATDD UE that needs to support the large bandwidth transmission;

Or, the subframe resources with different transmission directions configured on the at least two non-contiguous carriers are simultaneously scheduled for use by the LTE-ATDD UE having the capability of receiving and transmitting simultaneously on the two carriers.

The method according to claim 3, wherein the subframe resources whose transmission direction is oppositely configured on the at least two non-contiguous carriers are simultaneously scheduled for use by the FDD UE.

10. The method of claim 3, wherein the discontinuous reception state is configured for the FDD UE on the same subframe resource whose transmission direction is configured on the two carriers.

A network side device, comprising:

a duplex determination module, configured to determine a duplex mode of the UE;

The signal transmission module is configured to perform signal transmission with the UE according to a duplex mode of the UE in a time division manner.

The network side device according to claim 11, wherein the signal transmission module is further configured to perform at least two non-continuous signals when transmitting signals with the UE according to a duplex mode of the UE in a time division manner. The carrier wave is transmitted with the UE according to the duplex mode of the UE, and the frequency interval between the carriers satisfies the uplink and downlink frequency interval requirements of the FDD mode.

13. The network side device of claim 12, wherein the at least two non-contiguous carriers are at least two non-contiguous TDD carriers.

The network side device according to any one of claims 11 to 13, wherein the signal transmission module is further configured to perform signal transmission with the UE on at least one other TDD carrier, and/or, Signal transmission with the UE on at least one other FDD carrier.

The network side device according to claim 13, wherein the signal transmission module is further configured to configure different uplink and downlink subframes of two TDD carriers in each pair of non-contiguous TDD carriers .

The network side device according to claim 13, wherein the signal transmission module is further configured to synchronize subframes of two TDD carriers in each pair of non-contiguous TDD carriers, the subframe The deviation time is an integer multiple of the length of the sub-frame.

The network side device according to claim 13, wherein the signal transmission module is further configured to synchronize subframes of two TDD carriers in each pair of non-contiguous TDD carriers, and up and down The subframes are configured in the same manner; or, the subframes of the two TDD carriers in each pair of non-contiguous TDD carriers are synchronized, and the uplink and downlink subframes are configured differently; or, each pair of non-contiguous TDD carriers The subframes of the two TDD carriers are not synchronized, and the uplink and downlink subframes are configured differently.

The network side device according to claim 13, wherein the signal transmission module is further configured to schedule any one of the at least two discontinuous carriers to an LTE TDD UE or a single plant The LTE-ATDD UE of the wave is used; or, the subframe resources with the same transmission direction configured on the at least two non-contiguous carriers are simultaneously scheduled for use by the LTE-A TDD UE that needs to support the large bandwidth transmission; or The subframe resources with different transmission directions configured on the at least two non-contiguous carriers are simultaneously scheduled for use by the LTE-A TDD UE having the simultaneous reception and transmission capability on the two carriers.

The network side device according to claim 13, wherein the signal transmission module is further configured to simultaneously schedule the subframe resources with opposite transmission direction configurations on the at least two non-contiguous carriers to the FDD UE. use.

The network side device according to claim 13, wherein the signal transmission module is further configured to configure a discontinuous reception state for the FDD UE on the same subframe resource whose transmission direction is configured on the two carriers.

21. A user equipment, comprising:

a duplex determination module, configured to determine a duplex mode of the UE;

The user equipment according to claim 21, wherein the signal transmission module is further configured to perform signal transmission with the network side according to an FDD mode of the UE on at least two non-continuous carriers, the carrier wave The frequency interval between the two meets the uplink and downlink frequency interval requirements of the FDD mode; or the signal transmission is performed on the network side according to the TDD mode of the UE on any one or two of the at least two non-continuous carriers.

The user equipment according to claim 22, wherein the at least two non-continuous carriers are at least two non-contiguous TDD carriers,

The user equipment according to claim 23, wherein the signal transmission module is further configured to perform signal transmission with the network side on at least one other TDD carrier, and/or at least one other FDD Signal transmission on the carrier wave and the network side.