WO2012155508A1 - 一种传输控制方法和用户设备 - Google Patents
一种传输控制方法和用户设备 Download PDFInfo
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- WO2012155508A1 WO2012155508A1 PCT/CN2011/084190 CN2011084190W WO2012155508A1 WO 2012155508 A1 WO2012155508 A1 WO 2012155508A1 CN 2011084190 W CN2011084190 W CN 2011084190W WO 2012155508 A1 WO2012155508 A1 WO 2012155508A1
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- WIPO (PCT)
- Prior art keywords
- subframe
- uplink
- downlink
- type
- channel
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Classifications
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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
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
Definitions
- the present invention relates to the field of communications, and in particular, to a transmission control method and user equipment.
- the frame structure type 1 (Type 1) is suitable for full-duplex and half-duplex frequency division multiplexing (FDD).
- Each radio frame is 10ms long and consists of 20 slots, each slot is 0.5ms, numbered from 0 to 19.
- One subframe (frame) consists of two consecutive time slots, such as subframe i consisting of two consecutive time slots 2i and 2i+1.
- both uplink and downlink are transmitted on different frequencies, but for half-duplex FDD, user equipment (UE, User Equipment) cannot transmit and receive data at the same time; FDD does not have this limitation, that is, there can be 10 downlink subframes and 10 uplink subframes in every 10 ms interval. As shown in Figure 1.
- Frame Structure Type 2 (Type 2) applies to Time Division Duplex (TDD).
- a radio frame is 10ms long and consists of two half-frames with a length of 5ms.
- One field consists of five sub-frames of length 1 ms.
- the supported uplink and downlink configurations are shown in Table 1.
- “D” indicates that the subframe is a downlink subframe
- "U” indicates that the subframe is an uplink subframe
- S indicates that the subframe is a special subframe.
- the special subframe consists of DwPTS, GP and UpPTS, and the total length is lms.
- Each subframe i consists of two time slots 2i and 2i+l of length 0.5ms (15360 Ts), as shown in Fig. 2.
- the frame structure Type 2 supports two downlink-uplink conversion periods of 5ms and 10ms.
- both fields have special subframes.
- the 10ms uplink and downlink conversion cycle only the first half has a special subframe.
- Subframes 0, 5 and DwPTS are always reserved for downstream transmission.
- the UpPTS and the next subframe immediately following the special subframe are always reserved for uplink transmission. Therefore, for the 5ms uplink and downlink conversion period, UpPTS, subframe 2, and subframe 7 are reserved for uplink transmission; for 10ms uplink and downlink conversion period, UpPTS and subframe 2 are reserved for uplink transmission; Table 1: Uplink and downlink configurations.
- the following three types of downlink physical control channels are defined in the LTE: a physical downlink control format indicator channel (PCFICH, Physical Control Format Indicator Channel); a physical hybrid automatic retransmission request indicator channel (PHICH); Physical Downlink Control Channel (PDCCH).
- PCFICH Physical downlink control format indicator channel
- PHICH Physical Hybrid automatic retransmission request indicator channel
- PDCCH Physical Downlink Control Channel
- the information carried by the PCFICH is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for transmitting the PDCCH in one subframe, and is sent on the first OFDM symbol of the subframe, where the frequency is located. It is determined by the system downlink bandwidth and the cell identifier (ID, Identity). information.
- the number of PHICHs and the time-frequency location may be determined by a system message and a cell ID in a Physical Broadcast Channel (PBCH, Physical Broadcast Channel) of the downlink carrier where the PHICH is located.
- PBCH Physical Broadcast Channel
- the PDCCH is used to carry Downlink Control Information (DCI), and includes: scheduling information of the uplink PUSCH, scheduling information of the downlink PDSCH, and uplink power control information.
- DCI Downlink Control Information
- the continuous component carrier (spectral) (CC, Component Carrier) on the segment is aggregated by Carrier Aggregation (CA) technology to form a 100 MHz bandwidth that can be used by LTE-Advanced.
- a component carrier can also be regarded as a cell (Cell).
- the upper layer configures one pair of uplink/downlink component carriers as the primary uplink/downlink component carriers, and the other component carriers are called secondary component carriers. Unlike the primary component carrier, the secondary component carrier may have only one downlink component carrier.
- the invention provides a transmission control method and user equipment, so as to solve the problem that the uplink carrier and the downlink carrier are simultaneously present on the hybrid subframe in the TDD system.
- a transmission control method includes:
- the user equipment selects a subframe type of the subframe according to a predefined criterion, according to the selected subframe type. Transmitting uplink information on an uplink component carrier of the subframe or receiving downlink information on a downlink component carrier of the subframe;
- the subframe type includes an uplink subframe or a downlink subframe.
- the uplink information includes an uplink channel and/or an uplink signal
- the downlink information includes a downlink channel and/or a downlink signal.
- the predefined criteria include: a type of a subframe on a primary component carrier of the user equipment; and/or a channel type and/or a signal type transmitted on the subframe;
- the step of selecting, by the user equipment, the subframe type of the subframe according to the predefined criterion, the user equipment according to the type of the subframe on the primary component carrier of the user equipment; and/or the child The channel type and/or signal type transmitted on the frame, and the subframe type of the subframe is selected.
- the step of selecting, by the user equipment, the subframe type of the subframe according to the channel type and/or the signal type transmitted on the subframe includes:
- the subframe type of the subframe is selected as a downlink subframe.
- the step of selecting, by the user equipment, the subframe type of the subframe according to the channel type and/or the signal type transmitted on the subframe includes:
- the subframe type of the subframe is selected as an uplink subframe.
- the step of selecting, by the user equipment, the subframe type of the subframe according to the channel type and/or the signal type transmitted on the subframe includes:
- the user equipment When the user equipment has an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe, and has a downlink channel and/or a downlink signal transmission on the downlink component carrier of the subframe
- the uplink channel includes any one of a physical uplink shared channel, a physical uplink control channel, and a physical uplink random access channel, or any combination thereof;
- the uplink signal includes an SRS and/or a data demodulation reference signal (DMRS).
- SRS and/or a data demodulation reference signal (DMRS).
- DMRS data demodulation reference signal
- the downlink channel includes a physical hybrid automatic repeat request indication channel (PHICH); and the downlink signal includes a downlink reference signal.
- PHICH physical hybrid automatic repeat request indication channel
- the downlink reference signal includes one or more of a channel state information reference signal (CSI-RS), a positioning reference signal, and a cell-specific signal.
- CSI-RS channel state information reference signal
- the downlink reference signal includes one or more of a channel state information reference signal (CSI-RS), a positioning reference signal, and a cell-specific signal.
- the uplink channel or the uplink signal is higher than the downlink channel or the downlink signal
- the downlink channel or the downlink signal is higher than the uplink channel or the uplink signal
- the primary component carrier is higher than the secondary component carrier;
- PHICH is higher than the uplink channel or uplink signal;
- the uplink channel or the uplink signal is higher than the downlink reference signal
- the physical random channel is higher than the downlink reference signal
- the physical uplink control channel is higher than the downlink reference signal
- the physical uplink shared channel carrying the uplink control information is higher than the downlink reference signal
- the measurement reference signal (SRS) is higher than the downlink reference signal
- the downlink reference signal is higher than the physical uplink shared channel that does not carry the uplink control information.
- the step of selecting, by the user equipment, the type of the subframe according to the type of the subframe on the primary component carrier of the user equipment includes:
- the subframe When the type of the subframe on the primary component carrier of the user equipment is an uplink subframe, the subframe is selected as an uplink subframe; when the type of the subframe on the primary component carrier of the user equipment is a downlink subframe When the subframe is selected as a downlink subframe.
- the step of selecting the subframe type of the subframe according to the type of the subframe on the primary component carrier of the user equipment and the channel type and/or the signal type transmitted on the subframe includes:
- the user equipment When the user equipment has an uplink channel transmission and/or an uplink signal transmission on the uplink component carrier of the subframe, and the PHICH transmission of the user equipment is performed on the downlink component carrier of the subframe And when the downlink reference signal is transmitted, the user equipment selects a subframe type of the subframe according to a subframe type of the subframe on a primary component carrier of the user equipment.
- the transmission control method further includes:
- the user equipment When the selected subframe type is an uplink subframe, the user equipment does not receive downlink information on a downlink component carrier of the subframe;
- the user equipment When the selected subframe type is a downlink subframe, the user equipment does not send uplink information on the uplink component carrier of the subframe.
- a user equipment including a subframe type determining unit and a transmission control unit, where: the subframe type determining unit is configured to: in a time division duplex system, when there is an uplink component carrier and a downlink component carrier aggregation in one subframe And selecting, according to a predefined criterion, a subframe type of the subframe; where the subframe type includes an uplink subframe or a downlink subframe;
- the transmission control unit is configured to: send uplink information on an uplink component carrier of the subframe or receive downlink information on a downlink component carrier of the subframe according to the selected subframe type; where the uplink information includes The uplink channel and/or the uplink signal, the downlink information includes a downlink channel and/or a downlink signal.
- the predefined criteria include: a type of the subframe on a primary component carrier of the user equipment; and/or a channel type and/or a signal type transmitted on the subframe;
- the subframe type determining unit is configured to select a subframe type of the subframe according to: a type of the subframe on a primary component carrier of the user equipment; and/or, The channel type and/or signal type transmitted on the subframe, and the subframe type of the subframe is selected.
- the subframe type determining unit is configured to select a subframe type of the subframe according to a channel type and/or a signal type transmitted on the subframe according to any one of the following manners:
- the subframe is selected as a downlink subframe.
- the subframe type determining unit is configured to select a subframe type of the subframe according to a channel type and/or a signal type transmitted on the subframe according to any one of the following manners:
- the subframe is selected as an uplink subframe.
- the subframe type determining unit is configured to select a subframe type of the subframe according to a channel type and/or a signal type transmitted on the subframe according to any one of the following manners:
- the user equipment When the user equipment has an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe, and the downlink channel and/or a downlink signal on the downlink component carrier of the subframe During transmission, according to the predefined priority, the signal with the highest priority or the type of the subframe corresponding to the channel is selected as the subframe type.
- the uplink channel includes any one of a physical uplink shared channel, a physical uplink control channel, and a physical uplink random access channel, or any combination thereof;
- the uplink signal includes an SRS and/or a data demodulation reference signal (DMRS).
- SRS and/or a data demodulation reference signal (DMRS).
- DMRS data demodulation reference signal
- the downlink channel includes a PHICH;
- the downlink signal includes a downlink reference signal.
- the downlink reference signal includes one or more of a channel state information reference signal (CSI-RS), a positioning reference signal, and a cell-specific signal.
- CSI-RS channel state information reference signal
- the downlink reference signal includes one or more of a channel state information reference signal (CSI-RS), a positioning reference signal, and a cell-specific signal.
- the uplink channel or the uplink signal is higher than the downlink channel or the downlink signal
- the downlink channel or the downlink signal is higher than the uplink channel or the uplink signal
- the primary component carrier is higher than the secondary component carrier
- PHICH is higher than the uplink channel or uplink signal
- the uplink channel or the uplink signal is higher than the downlink reference signal
- the physical random channel is higher than the downlink reference signal
- the physical uplink control channel is higher than the downlink reference signal
- the physical uplink shared channel carrying the uplink control information is higher than the downlink reference signal
- the measurement reference signal (SRS) is higher than the downlink reference signal
- the downlink reference signal is higher than the physical uplink shared channel that does not carry the uplink control information.
- the subframe type determining unit is configured to select, according to the type of the subframe on the primary component carrier of the user equipment, the subframe type of the subframe, including:
- the subframe type of the subframe is selected as an uplink subframe; when the subframe of the primary component carrier of the user equipment is When the type of the downlink subframe is a downlink subframe, the subframe type of the subframe is selected as a downlink subframe.
- the subframe type determining unit is configured to select the subframe according to the type of the subframe on the primary component carrier of the user equipment and the channel type and/or signal type transmitted on the subframe according to the following manner.
- Subframe type :
- the transmission control unit is further configured to: when the subframe type selected by the subframe type determining unit is an uplink subframe, do not receive downlink information on a downlink component carrier of the subframe; When the subframe type selected by the frame type determining unit is a downlink subframe, uplink information is not transmitted on the uplink component carrier of the subframe.
- the terminal determines whether the hybrid subframe is an uplink subframe or a downlink subframe according to the application scenario, and sends or receives data on the corresponding uplink component carrier or downlink component carrier, and dynamically selects the hybrid subframe.
- the type can be used more efficiently, so as to improve the efficiency of the spectrum.
- Figure 1 is a schematic diagram of a frame structure of an FDD mode
- FIG. 2 is a schematic diagram of a frame structure of a TDD mode
- FIG. 3 is a block diagram of a user equipment according to an embodiment of the present invention.
- the user equipment selects a subframe type of the subframe according to a predefined criterion, and the subframe is in the subframe according to the selected subframe type.
- the uplink information is sent on the uplink component carrier or the downlink information is received on the downlink component carrier of the subframe.
- the subframe type is an uplink subframe or a downlink subframe, and the uplink information is an uplink channel and/or an uplink signal.
- the downlink information is a downlink channel and/or a downlink signal.
- the information is carried on the channel, the channel is mapped to the physical resource, and the process of transmitting the information is equivalent to the process of transmitting the channel.
- the step of selecting, by the user equipment, the subframe type of the subframe according to a predefined criterion includes: Determining the subframe type of the subframe according to the type of the subframe on the primary component carrier of the user equipment, and/or the channel type and/or signal type transmitted on the subframe, specifically referring to the following Method 1, mode two and mode three.
- the UE When the subframe is an uplink subframe, the UE does not receive downlink information on the downlink component carrier of the subframe;
- the UE When the subframe is a downlink subframe, the UE does not send uplink information on the uplink component carrier of the subframe.
- the uplink channel includes one of a physical uplink shared channel, a physical uplink control channel, and a physical uplink random access channel, or a combination thereof;
- the uplink signal includes an SRS and/or a data demodulation reference signal (DMRS,
- the downlink channel includes a PHICH, and the downlink signal includes a downlink reference signal.
- the downlink reference signal includes one or more of a channel state information reference signal (CSI-RS, a channel-state information reference signal), a positioning reference signal, and a cell-specific signal.
- CSI-RS channel state information reference signal
- a positioning reference signal a cell-specific signal.
- the user equipment selects the subframe type of the subframe according to the channel type and/or the signal type transmitted on the subframe, including:
- the UE When the UE does not have uplink channel transmission and/or uplink signal transmission on the uplink component carrier of the subframe, the UE receives downlink information on the downlink component carrier of the subframe. At this time, the subframe is selected as a downlink subframe.
- the UE When the UE has uplink channel transmission and/or uplink signal transmission on the uplink component carrier of the subframe, and there is no PHICH transmission of the UE and/or no location on the downlink component carrier of the subframe
- the UE transmits the uplink channel and/or the uplink signal on the uplink component carrier of the subframe; at this time, the subframe is selected as an uplink subframe.
- the UE When the UE has an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe, and has a PHICH transmission of the UE on the downlink component carrier of the subframe, and/or the
- the transmission on the subframe is performed according to a predefined priority.
- the channel and/or the signal, and/or the highest priority among the component carriers of the subframe determines the subframe type of the subframe, that is, the signal with the highest priority or the type of the subframe corresponding to the channel is the subframe type. Transmitting uplink information on the uplink component carrier or receiving downlink information on the downlink component carrier according to the selected subframe type;
- the uplink channel or uplink signal is higher than the downlink channel or the downlink signal
- the downlink channel or downlink signal is higher than the uplink channel or the uplink signal
- the primary component carrier is higher than the secondary component carrier
- the PHICH is higher than the uplink channel or the uplink signal
- the uplink channel or the uplink signal is higher than the downlink reference signal
- the physical random channel is higher than the downlink reference signal
- the physical uplink control channel is higher than the downlink reference signal
- the physical uplink shared channel carrying the uplink control information is higher than the downlink reference signal
- the measurement reference signal (SRS, Sounding Reference Signal) is higher than the downlink reference signal;
- the downlink reference signal is higher than the physical uplink shared channel that does not carry the uplink control information.
- the above priorities conflict is well known to those skilled in the art, for example, the first priority and the second priority conflict, the first priority and the fourth and tenth priority Conflict, the above Article 2 priority conflicts with the above 5th, 6th, 7th, 8th and 9th priorities.
- the conflicting situations of the priorities mentioned below are also well known to those skilled in the art and will not be described again.
- the user equipment selects the type of the subframe according to the type of the subframe on the primary component carrier of the user equipment, including:
- the subframe is selected as an uplink subframe; when the type of the subframe on the primary component carrier of the user equipment is a downlink subframe , Select this subframe as the downlink subframe.
- Selecting, according to the type of the subframe on the primary component carrier of the user equipment, and the channel type and/or signal type transmitted on the subframe, selecting a subframe type of the subframe includes:
- the user equipment When the user equipment has an uplink channel transmission and/or an uplink signal transmission on the uplink component carrier of the subframe, and the PHICH transmission of the user equipment is performed on the downlink component carrier of the subframe And when the downlink reference signal is transmitted, the user equipment selects a subframe type of the subframe according to the subframe type of the subframe on the primary component carrier of the user equipment. Specifically, how to select the subframe type of the subframe according to the subframe type of the subframe on the primary component carrier is as follows:
- the predefined criterion is a channel type and/or a signal type transmitted on the subframe; the priority is that the uplink channel or the uplink signal is higher than the downlink channel or the uplink signal.
- the UE when there is an uplink component carrier and a downlink component carrier aggregation on a subframe, the UE selects whether the subframe is an uplink subframe or a downlink subframe according to a channel type and/or a signal type transmitted on the subframe. a frame, transmitting uplink information on the uplink component carrier or receiving downlink information on the downlink component carrier;
- the subframe is an uplink subframe at this time.
- the UE does not receive downlink information on the downlink component carrier of the subframe
- the UE When the UE does not have an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe, the UE receives downlink information on the downlink component carrier of the subframe; at this time, selecting the subframe It is a downlink subframe.
- the uplink channel is a physical uplink shared channel and/or a physical uplink control channel and/or physically A random access channel;
- the uplink signal is a measurement reference signal (SRS) and/or a data demodulation reference signal (DMRS).
- SRS measurement reference signal
- DMRS data demodulation reference signal
- the predefined criterion is a channel type and/or a signal type transmitted on the subframe; and the priority is that the PHICH is higher than an uplink channel or an uplink signal.
- the UE when there is an uplink component carrier and a downlink component carrier aggregation on a subframe, the UE selects whether the subframe is an uplink subframe or a downlink subframe according to a channel type and/or a signal type transmitted on the subframe. a frame, transmitting uplink information on the uplink component carrier or receiving downlink information on the downlink component carrier;
- the UE When the UE has an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe and does not have the PHICH transmission of the UE on the downlink component carrier of the subframe, the UE is in the sub Transmitting the uplink channel and/or the uplink signal on the uplink component carrier of the frame; at this time, selecting the subframe as an uplink subframe.
- the UE does not receive downlink information on the downlink component carrier of the subframe
- the UE When the UE has an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe and a PHICH transmission of the UE on the downlink component carrier of the subframe, the UE is in the sub The downlink component is received on the downlink component carrier of the frame; at this time, the subframe is selected as a downlink subframe.
- the UE does not transmit the uplink channel and/or the uplink signal transmission on the uplink component carrier of the subframe;
- the UE When the UE does not have an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe, the UE receives downlink information on the downlink component carrier of the subframe. At this time, the subframe is Downstream subframe.
- the uplink channel is a physical uplink shared channel and/or a physical uplink control channel and/or a physical uplink random access channel; and the uplink signal is a measurement reference signal (SRS) and/or a data demodulation reference signal (DMRS).
- SRS measurement reference signal
- DMRS data demodulation reference signal
- the predefined criterion is a channel type and/or a signal type transmitted on the subframe; the priority is: the PHICH is higher than the uplink channel or the uplink signal; the physical random channel is higher than the CSI-RS The physical uplink control channel is higher than the CSI-RS; the physical uplink shared channel carrying the uplink control information is higher than the CSI-RS; the CSI-RS is higher than the physical uplink shared channel without the uplink control information; the SRS is higher than the CSI-RS.
- the UE when there is an uplink component carrier and a downlink component carrier aggregation on a subframe, the UE selects whether the subframe is an uplink subframe or a downlink subframe according to a channel type and/or a signal type transmitted on the subframe. a frame, transmitting uplink information on the uplink component carrier or receiving downlink information on the downlink component carrier;
- the UE When the UE does not have uplink channel transmission and/or uplink signal transmission on the uplink component carrier of the subframe, the UE receives downlink information on the downlink component carrier of the subframe;
- the frame is a downlink subframe.
- the UE When the UE has uplink channel transmission and/or uplink signal transmission on the uplink component carrier of the subframe and does not have the PHICH transmission of the UE on the downlink component carrier of the subframe and/or does not have the
- the UE transmits the uplink channel and/or the uplink signal on the uplink component carrier of the subframe.
- the subframe is selected as an uplink subframe.
- the UE When the UE has an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe and a PHICH transmission of the UE on the downlink component carrier of the subframe, according to a predefined priority If the PHICH is higher than the uplink channel or the uplink signal, the subframe is selected as a downlink subframe, and the UE receives downlink information on the downlink component carrier of the subframe.
- the UE When the UE has an uplink channel (the physical uplink shared channel that does not carry the uplink control information) on the uplink component carrier of the subframe, and does not have the PHICH transmission of the UE on the downlink component carrier of the subframe, When there is a CSI-RS transmission of the UE, the CSI-RS is higher than the physical uplink shared channel that does not carry the uplink control information according to the predefined priority.
- the subframe is selected as the downlink subframe, and the UE is in the The downlink component is received on the downlink component carrier of the subframe.
- the UE When the UE has an uplink channel (physical random channel; physical uplink control channel; physical uplink shared channel carrying uplink control information) and/or uplink signal on the uplink component carrier of the subframe (SRS) transmitting and having no PHICH transmission of the UE on the downlink component carrier of the subframe, when there is CSI-RS transmission of the UE, according to a predefined priority, the physical random channel is higher than CSI-
- the physical uplink control channel is higher than the CSI-RS; the physical uplink shared channel carrying the uplink control information is higher than the CSI-RS, and the SRS is higher than the CSI-RS.
- the subframe is selected as the uplink subframe, and the UE is in the Transmitting the uplink channel and/or the uplink signal on the uplink component carrier of the subframe.
- the UE When the subframe is an uplink subframe, the UE does not receive downlink information on the downlink component carrier of the subframe;
- the UE When the subframe is a downlink subframe, the UE does not transmit the uplink information on the uplink component carrier of the subframe.
- the predefined criterion is determined according to the type of the subframe on the primary component carrier.
- the UE selects whether the subframe is an uplink subframe or a downlink subframe according to the type of the subframe on the primary component carrier, where Transmitting uplink information on the uplink component carrier or receiving downlink information on the downlink component carrier;
- the UE selects the subframe as an uplink subframe, and the UE transmits the uplink channel and/or the uplink signal on the uplink component carrier of the subframe.
- the UE selects the subframe as a downlink subframe, and the UE receives downlink information on the downlink component carrier of the subframe.
- the UE When the subframe is selected as an uplink subframe, the UE does not receive downlink information on the downlink component carrier of the subframe;
- the UE When the subframe is selected as a downlink subframe, the UE does not transmit the uplink information on the uplink component carrier of the subframe.
- the predefined criterion is a channel type and/or a signal type transmitted on the subframe, and a type of the subframe on the primary component carrier.
- the UE when there is an uplink component carrier and a downlink component carrier aggregation on a subframe, the UE selects whether the subframe is an uplink subframe or a downlink subframe according to a channel type and/or a signal type transmitted on the subframe. a frame, transmitting uplink information on the uplink component carrier or receiving downlink information on the downlink component carrier;
- the UE When the UE does not have uplink channel transmission and/or uplink signal transmission on the uplink component carrier of the subframe, the UE receives downlink information on the downlink component carrier of the subframe;
- the frame is a downlink subframe.
- the UE When the UE has uplink channel transmission and/or uplink signal transmission on the uplink component carrier of the subframe and does not have the PHICH transmission of the UE on the downlink component carrier of the subframe and/or does not have the
- the UE transmits the uplink channel and/or the uplink signal on the uplink component carrier of the subframe; at this time, the subframe is selected as an uplink subframe;
- the UE determines the subframe type according to the primary component carrier.
- the subframe subframe type of the primary component carrier is an uplink subframe
- the UE selects the subframe as an uplink subframe, and the UE is in the subframe.
- the UE Transmitting the uplink channel and/or the uplink signal on the uplink component carrier of the frame; when the subframe type is a downlink subframe on the primary component carrier, the UE selects the subframe as a downlink subframe, and the UE is in the subframe Receiving downlink information on the downlink component carrier of the frame;
- the UE When the subframe is selected as an uplink subframe, the UE does not receive downlink information on the downlink component carrier of the subframe;
- the UE When the subframe is selected as a downlink subframe, the UE does not transmit the uplink information on the uplink component carrier of the subframe.
- the embodiment of the present invention further provides a user equipment, as shown in FIG. 3, including a subframe type determining unit and a transmission control unit, where:
- the subframe type determining unit is configured to, when in a time division duplex system, exist on one subframe When the row component carrier and the downlink component carrier are aggregated, the subframe type of the subframe is selected according to a predefined criterion; the subframe type is an uplink subframe or a downlink subframe;
- the transmission control unit is configured to: send uplink information on an uplink component carrier of the subframe or receive downlink information on a downlink component carrier of the subframe according to the selected subframe type, where the uplink information is an uplink channel And/or an uplink signal, where the downlink information is a downlink channel and/or a downlink signal.
- the subframe type determining unit is configured to: select, according to a type of the subframe on a primary component carrier of the user equipment, and/or a channel type and/or a signal type transmitted on the subframe The subframe type of the subframe.
- the subframe type determining unit is configured to:
- the subframe is selected as a downlink subframe.
- the subframe type determining unit is configured to:
- the subframe is selected as an uplink subframe.
- PHICH retransmission request indication channel
- the subframe type determining unit is configured to:
- the user equipment When the user equipment has an uplink channel and/or an uplink signal transmission on the uplink component carrier of the subframe, and the PHICH transmission of the user equipment is performed on the downlink component carrier of the subframe Or when the downlink reference signal is transmitted, according to a predefined priority, the channel and/or signal transmitted on the subframe is determined, and/or the highest priority among the component carriers of the subframe determines the subframe of the subframe. Types of.
- the uplink channel or the uplink signal is higher than the downlink channel or the downlink signal
- the downlink channel or the downlink signal is higher than the uplink channel or the uplink signal
- the primary component carrier is higher than the secondary component carrier
- PHICH is higher than the uplink channel or uplink signal;
- the uplink channel or the uplink signal is higher than the downlink reference signal;
- the physical random channel is higher than the downlink reference signal
- the physical uplink control channel is higher than the downlink reference signal
- the physical uplink shared channel carrying the uplink control information is higher than the downlink reference signal
- the measurement reference signal (SRS) is higher than the downlink reference signal
- the downlink reference signal is higher than the physical uplink shared channel that does not carry the uplink control information.
- the subframe type determining unit is configured to:
- the user equipment When the user equipment has an uplink channel transmission and/or an uplink signal transmission on the uplink component carrier of the subframe, and the PHICH transmission of the user equipment is performed on the downlink component carrier of the subframe And when the downlink reference signal is transmitted, the subframe type of the subframe is selected according to the subframe type of the subframe on the primary component carrier of the user equipment.
- the sub-frame type determining unit selects the type of the sub-frame according to the type of the sub-frame on the main component carrier of the user equipment, including:
- the subframe is selected as an uplink subframe; when the type of the subframe on the primary component carrier of the user equipment is a downlink subframe , Select this subframe as the downlink subframe.
- the transmission control unit is further configured to: when the subframe type determining unit selects the subframe as an uplink subframe, does not receive downlink information on a downlink component carrier of the subframe.
- the transmission control unit is further configured to: when the subframe type determining unit selects the subframe as a downlink subframe, does not send uplink information on an uplink component carrier of the subframe.
- the uplink channel includes one of a physical uplink shared channel, a physical uplink control channel, and a physical uplink random access channel, or a combination thereof; and the uplink signal includes an SRS and/or a data demodulation reference signal (DMRS).
- DMRS data demodulation reference signal
- the downlink channel includes a PHICH, and the downlink signal includes a downlink reference signal.
- the downlink reference signal includes one or more of a CSI-RS, a positioning reference signal, and a cell-specific signal.
- all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits.
- the functional units in the various embodiments of the present invention may be implemented in the form of hardware or in the form of software functional modules. The invention is not limited to any specific form of combination of hardware and software.
- the integrated modules, if implemented in the form of software functional modules and sold or used as separate products, may also be stored in a computer readable storage medium.
- the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
- the terminal determines whether the hybrid subframe is an uplink subframe or a downlink subframe according to the application scenario, and sends or receives data on the corresponding uplink component carrier or downlink component carrier, thereby achieving the purpose of improving spectrum efficiency. Therefore, the present invention has strong industrial applicability.
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Abstract
一种传输控制方法和用户设备,该方法包括:在时分双工系统中,当一个子帧上存在上行分量载波和下行分量载波聚合时,用户设备根据预定义的准则,选择该子帧的子帧类型,根据所选的子帧类型在所述子帧的上行分量载波上发送上行信息或在所述子帧的下行分量载波上接收下行信息,所述子帧类型包括上行子帧或下行子帧,所述上行信息包括上行信道和/或上行信号,所述下行信息包括下行信道和/或下行信号。上述技术方案确定混合子帧为上行子帧还是为下行子帧,在相应的上行分量载波或下行分量载波上发送或接收数据,从而达到提高频谱效率的目的。
Description
一种传输控制方法和用户设备
技术领域
本发明涉及通信领域, 尤其涉及一种传输控制方法和用户设备。
背景技术
长期演进( LTE, Long Term Evolution ) 系统中有两种帧结构 , 帧结构类 型 1 ( Type 1 )适用于全双工和半双工频分复用 (FDD, Frequency Division Duplex )。每个无线帧长为 10ms, 由 20个时隙( slot )组成,每个时隙 0.5ms, 编号从 0到 19。 一个子帧( subframe )由两个连续的时隙组成, 如子帧 i由两 个连续的时隙 2i和 2i+ 1组成。 无论是半双工 FDD还是全双工 FDD , 上下行 都是在不同的频率上传输, 但是对于半双工 FDD , 用户设备 ( UE , User Equipment )不能同时发送和接收数据; 而对于全双工 FDD就没有这个限制, 即在每 10ms间隔内可以有 10个下行子帧和 10个上行子帧。 如图 1所示。
帧结构类型 2 ( Type 2 ) 适用于时分双工( TDD, Time Division Duplex )。 一个无线帧长度为 10ms, 由两个长度为 5ms的半帧(half-frame )组成。 一个 半帧由 5个长度为 1ms的子帧组成。 支持的上下行链路配置如表 1所示, 表 中" D"表示该子帧为下行子帧, "U"表示该子帧为上行子帧, "S"表示该子帧 为特殊子帧 ( special subframe ) 。 特殊子帧由 DwPTS, GP以及 UpPTS组成, 总长度为 lms。每个子帧 i由两个长度为 0.5ms( 15360 Ts )的时隙 2i和 2i+l 组成, 如图 2所示。
帧结构 Type 2 支持 5ms和 10ms两种下行-上行转换周期。 在 5ms的上 下行转换周期中, 两个半帧都有特殊子帧。 在 10ms的上下行转换周期中, 只 有第一个半帧有特殊子帧。子帧 0、5 和 DwPTS 总是预留为下行传输。 UpPTS 和紧接着特殊子帧的下一个子帧总是预留为上行传输。 因此对 5ms的上下行 转换周期, UpPTS、 子帧 2和子帧 7预留为上行传输; 对 10ms的上下行转换 周期, UpPTS、 子帧 2预留为上行传输;
表 1 : 上下行链路配置.
LTE中定义了如下三种下行物理控制信道: 物理下行控制格式指示信道 ( PCFICH, Physical Control Format Indicator Channel ); 物理混合自动重传请 求才旨示信道 ( PHICH , Physical Hybrid Automatic Retransmission Request Indicator Channel ) ; 物理下行控制信道 ( PDCCH, Physical Downlink Control Channel ) 。
其中, PCFICH承载的信息用于指示在一个子帧里传输 PDCCH的正交频 分复用 ( OFDM, Orthogonal Frequency Division Multiplexing )符号的数目 , 在子帧的第一个 OFDM符号上发送, 所在频率位置由系统下行带宽与小区标 识(ID, Identity )确定。 信息。 PHICH的数目、时频位置可由 PHICH所在的下行载波的物理广播信道 ( PBCH, Physical Broadcast Channel ) 中的系统消息和小区 ID确定。
PDCCH用于承载下行控制信息 (DCI, Downlink Control Information ) , 包括: 上行 PUSCH的调度信息、 下行 PDSCH的调度信息, 以及上行功率控 制信息。
由于 LTE-Advanced网络需要能够接入 LTE用户, 所以其操作频带需要 覆盖目前 LTE频带, 在这个频段上已经不存在可分配的连续 100MHz的频谱 带宽了,所以 LTE-Advanced需要解决的一个直接技术是将几个分布在不同频
段上的连续分量载波(频谱) ( CC, Component Carrier )釆用载波聚集( CA, Carrier Aggregation )技术聚合起来, 形成 LTE-Advanced可以使用的 100MHz 带宽。 一个分量载波也可以看作一个小区(Cell )。 在终端聚合的多个分量载 波中, 高层会配置其中一对上行 /下行分量载波为主上行 /下行分量载波, 其它 分量载波称为辅分量载波。 与主分量载波不同, 辅分量载波可以只有一个下 行分量载波。
对于 TDD系统, 当不同上下行比例的分量载波聚合的时候,存在一个混 合子帧, 在混合子帧上同时存在上行载波和下行载波, 如表 1 所示, 子帧 3 和子帧 4、 子帧 7、 子帧 8、 子帧 9可能为混合子帧。 为了降低成本, TDD终 端可能不支持同时收发, 目前, 对于该混合子帧上同时存在上行载波和下行 载波的处理问题, 还没有相关研究和解决办法。
发明内容
本发明提供的一种传输控制方法和用户设备,以便解决 TDD系统中混合 子帧上同时存在上行载波和下行载波的处理问题。
一种传输控制方法, 包括:
在时分双工系统中, 当一个子帧上存在上行分量载波和下行分量载波聚 合时, 用户设备根据预定义的准则, 选择所述子帧的子帧类型, 根据所选的 子帧类型在所述子帧的上行分量载波上发送上行信息或在所述子帧的下行分 量载波上接收下行信息;
其中, 所述子帧类型包括上行子帧或下行子帧;
所述上行信息包括上行信道和 /或上行信号, 所述下行信息包括下行信道 和 /或下行信号。
其中, 所述预定义的准则包括: 所述用户设备的主分量载波上子帧的类 型; 和 /或, 所述子帧上传输的信道类型和 /或信号类型;
相应的, 用户设备根据预定义的准则, 选择所述子帧的子帧类型的步骤 包括: 所述用户设备根据所述用户设备的主分量载波上子帧的类型; 和 /或, 所述子帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型。
其中, 用户设备才艮据所述子帧上传输的信道类型和 /或信号类型, 选择所 述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上没有上行信道传输和 /或上行信号传输时, 选择所述子帧的子帧类型为下行子帧。
其中, 用户设备根据所述子帧上传输的信道类型和 /或信号类型, 选择所 述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上没有下行信道和 /或下行信 号传输时, 选择所述子帧的子帧类型为上行子帧。
其中, 用户设备才艮据所述子帧上传输的信道类型和 /或信号类型, 选择所 述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上有下行信道和 /或下行信号 传输时, 按照预定义的优先级, 选择优先级最高的信号或信道 应的子顿的 类型为子帧类型。
其中: 所述上行信道包括物理上行共享信道、 物理上行控制信道及物理 上行随机接入信道中的任意一种或其任意组合;
所述上行信号包括 SRS和 /或数据解调参考信号 ( DMRS ) 。
其中: 所述下行信道包括物理混合自动重传请求指示信道(PHICH ) ; 所述下行信号包括下行参考信号。
其中: 所述下行参考信号包括信道状态信息参考信号 (CSI-RS ) 、 定位 参考信号、 小区专有信号中的一种或多种。
其中, 所述优先级为如下优先级中的任意一种或以下优先级中不冲突情 况下的任意相互组合:
上行信道或上行信号高于下行信道或下行信号;
下行信道或下行信号高于上行信道或上行信号;
主分量载波高于辅分量载波;
PHICH高于上行信道或上行信号;
上行信道或上行信号高于下行参考信号;
物理随机信道高于下行参考信号;
物理上行控制信道高于下行参考信号;
承载上行控制信息的物理上行共享信道高于下行参考信号;
测量参考信号 (SRS ) 高于下行参考信号;
下行参考信号高于没有承载上行控制信息的物理上行共享信道。
其中, 用户设备根据所述用户设备的主分量载波上该子帧的类型, 选择 所述子帧的类型的步骤包括:
当所述用户设备的主分量载波上所述子帧的类型为上行子帧时, 选择该 子帧为上行子帧; 当所述用户设备的主分量载波上该子帧的类型为下行子帧 时, 选择该子帧为下行子帧。
其中, 根据所述用户设备的主分量载波上子帧的类型和所述子帧上传输 的信道类型和 /或信号类型, 选择所述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道传输和 / 或上行信号传输, 且在所述子帧的所述下行分量载波上有所述用户设备的 PHICH传输和 /或下行参考信号传输时,所述用户设备根据所述用户设备的主 分量载波上所述子帧的子帧类型, 选择所述子帧的子帧类型。
该传输控制方法还包括:
当所选的子帧类型为上行子帧时, 所述用户设备在所述子帧的下行分量 载波上不接收下行信息;
当所选的子帧类型为下行子帧时, 所述用户设备在所述子帧的上行分量 载波上不发送上行信息。
一种用户设备, 包括子帧类型确定单元和传输控制单元, 其中: 所述子帧类型确定单元设置成: 在时分双工系统中, 当一个子帧上存在 上行分量载波和下行分量载波聚合时, 根据预定义的准则, 选择所述子帧的 子帧类型; 其中, 所述子帧类型包括上行子帧或下行子帧;
所述传输控制单元设置成: 根据所选的子帧类型在所述子帧的上行分量 载波上发送上行信息或在所述子帧的下行分量载波上接收下行信息; 其中, 所述上行信息包括上行信道和 /或上行信号, 所述下行信息包括下行信道和 / 或下行信号。
其中, 所述预定义的准则包括: 所述用户设备的主分量载波上该子帧的 类型; 和 /或, 所述子帧上传输的信道类型和 /或信号类型;
相应的, 所述子帧类型确定单元设置成按照以下方式选择所述子帧的子 帧类型: 才艮据所述用户设备的主分量载波上所述子帧的类型; 和 /或, 所述子 帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型。
其中, 所述子帧类型确定单元设置成按照以下方式中的任意一种根据所 述子帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型:
当所述用户设备在所述子帧的上行分量载波上没有上行信道传输和 /或 上行信号传输时, 选择该子帧为下行子帧。
其中, 所述子帧类型确定单元设置成按照以下方式中的任意一种根据所 述子帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上没有所述下行信道和 /或下 行信号传输时, 选择该子帧为上行子帧。
其中, 所述子帧类型确定单元设置成按照以下方式中的任意一种根据所 述子帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上有所述下行信道和 /或下行 信号传输时, 按照预定义的优先级, 选择优先级最高的信号或信道对应的子 帧的类型为子帧类型。
其中: 所述上行信道包括物理上行共享信道、 物理上行控制信道及物理 上行随机接入信道中的任意一种或其任意组合;
所述上行信号包括 SRS和 /或数据解调参考信号 ( DMRS ) 。
其中: 所述下行信道包括 PHICH;
所述下行信号包括下行参考信号。
其中, 所述下行参考信号包括信道状态信息参考信号 (CSI-RS ) 、 定位 参考信号、 小区专有信号中的一种或多种。
其中, 所述优先级为如下优先级中的任意一种或以下优先级中不冲突情 况下的任意相互组合:
上行信道或上行信号高于下行信道或下行信号;
下行信道或下行信号高于上行信道或上行信号;
主分量载波高于辅分量载波;
PHICH高于上行信道或上行信号;
上行信道或上行信号高于下行参考信号;
物理随机信道高于下行参考信号;
物理上行控制信道高于下行参考信号;
承载上行控制信息的物理上行共享信道高于下行参考信号;
测量参考信号 (SRS ) 高于下行参考信号;
下行参考信号高于没有承载上行控制信息的物理上行共享信道。
其中, 所述子帧类型确定单元设置成按照以下方式根据所述用户设备的 主分量载波上所述子帧的类型, 选择所述子帧的子帧类型包括:
当所述用户设备的主分量载波上所述子帧的类型为上行子帧时, 选择所 述子帧的子帧类型为上行子帧; 当所述用户设备的主分量载波上所述子帧的 类型为下行子帧时, 选择所述子帧的子帧类型为下行子帧。
其中, 所述子帧类型确定单元设置成按照以下方式根据所述用户设备的 主分量载波上子帧的类型和所述子帧上传输的信道类型和 /或信号类型, 选择 所述子帧的子帧类型:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道传输和 / 或上行信号传输, 且在所述子帧的所述下行分量载波上有所述用户设备的 PHICH传输和 /或下行参考信号传输时,根据所述用户设备的主分量载波上所 述子帧的子帧类型, 选择所述子帧的子帧类型。
其中, 所述传输控制单元还设置成: 当所述子帧类型确定单元所选的子 帧类型为上行子帧时, 在所述子帧的下行分量载波上不接收下行信息; 当所 述子帧类型确定单元所选的子帧类型为下行子帧时, 在所述子帧的上行分量 载波上不发送上行信息。
上述技术方案, 通过预定义准则, 终端根据应用场景确定混合子帧为上 行子帧还是为下行子帧, 在相应的上行分量载波或下行分量载波上发送或接 收数据, 通过动态的选择混合子帧的类型, 可以更效的使用频谱资源, 从而 达到提高频谱效率的目的。 附图概述
图 1为 FDD模式的帧结构示意图;
图 2为 TDD模式的帧结构示意图;
图 3是本发明实施例的用户设备框图。
本发明的较佳实施方式
为使本发明的目的、 技术方案和优点更加清楚明白, 下文中将结合附图 对本发明的实施例进行详细说明。 需要说明的是, 在不冲突的情况下, 本申 请中的实施例及实施例中的特征可以相互任意组合。
本发明实施例提供的一种传输控制方法, 包括:
在 TDD 系统中, 当一个子帧上存在上行分量载波和下行分量载波聚合 时, 用户设备根据预定义的准则, 选择该子帧的子帧类型, 根据所选的子帧 类型在所述子帧的上行分量载波上发送上行信息或在所述子帧的下行分量载 波上接收下行信息, 所述子帧类型为上行子帧或下行子帧, 所述上行信息为 上行信道和 /或上行信号, 所述下行信息为下行信道和 /或下行信号。
在此需要说明的是, 信息承载在信道上, 信道映射到物理资源上, 发送 信息的过程, 相当于信道的发送过程。
所述用户设备根据预定义的准则, 选择该子帧的子帧类型的步骤包括:
才艮据所述用户设备的主分量载波上该子帧的类型, 和 /或, 所述子帧上传 输的信道类型和 /或信号类型,选择该子帧的子帧类型,具体参照下述方式一、 方式二和方式三。
其中, 当所述子帧为上行子帧时, UE在所述子帧的所述下行分量载波上 不接收下行信息;
其中, 当所述子帧为下行子帧时, UE在所述子帧的所述上行分量载波上 不发送上行信息;
其中, 所述上行信道包括物理上行共享信道、 物理上行控制信道、 物理 上行随机接入信道之一或其组合;
其中, 所述上行信号包括 SRS 和 /或数据解调参考信号 (DMRS ,
Demodulation Reference Signal ) ;
其中 , 所述下行信道包括 PHICH, 所述下行信号包括下行参考信号。 所述下行参考信号包括信道状态信息参考信号 (CSI-RS, Channel-State Information Reference Signal )、定位参考信号、小区专有信号中的一种或多种。
方式一
所述用户设备才艮据所述子帧上传输的信道类型和 /或信号类型, 选择该子 帧的子帧类型包括:
当 UE在所述子帧的所述上行分量载波上没有上行信道传输和 /或上行信 号传输时, UE在所述子帧的所述下行分量载波上接收下行信息。 此时, 选择 所述子帧为下行子帧。
当 UE在所述子帧的所述上行分量载波上有上行信道传输和 /或上行信号 传输, 且在所述子帧的所述下行分量载波上没有所述 UE的 PHICH传输和 / 或没有所述 UE的下行参考信号传输时, UE在所述子帧的所述上行分量载波 上传输所述上行信道和 /或所述上行信号; 此时, 选择所述子帧为上行子帧。
当 UE在所述子帧的所述上行分量载波上有上行信道和 /或上行信号传 输,且在所述子帧的所述下行分量载波上有所述 UE的 PHICH传输和 /或有所 述 UE的下行参考信号传输时, 按照预定义的优先级, 根椐该子帧上传输的
信道和 /或信号, 和 /或, 该子帧的分量载波中优先级最高者确定该子帧的子帧 类型, 即选择优先级最高的信号或信道对应的子帧的类型为子帧类型, 根据 所选的子帧类型在所述上行分量载波上发送上行信息或在所述下行分量载波 上接收下行信息;
其中, 所述优先级为以下优先级之一或下述优先级不沖突情况下相互任 意组合:
1、 上行信道或上行信号高于下行信道或下行信号;
2、 下行信道或下行信号高于上行信道或上行信号;
3、 主分量载波高于辅分量载波;
4、 PHICH高于上行信道或上行信号;
5、 上行信道或上行信号高于下行参考信号;
6、 物理随机信道高于下行参考信号;
7、 物理上行控制信道高于下行参考信号;
8、 承载上行控制信息的物理上行共享信道高于下行参考信号;
9、 测量参考信号(SRS, Sounding Reference Signal )高于下行参考信号;
10、 下行参考信号高于没有承载上行控制信息的物理上行共享信道。 上述优先级是否冲突, 对于本领域技术人员来说是熟知的, 举例而言, 上述第 1条优先级和第 2条优先级冲突,第 1条优先级与上述第 4和第 10条 优先级冲突, 上述第 2条优先级和上述第 5、 6、 7、 8和 9条优先级冲突。 以 下提到的优先级的冲突情况也是本领域技术人员熟知的, 将不再赘述。
方式二
所述用户设备根据所述用户设备的主分量载波上该子帧的类型, 选择该 子帧的类型包括:
当所述用户设备的主分量载波上该子帧的类型为上行子帧时, 选择该子 帧为上行子帧; 当所述用户设备的主分量载波上该子帧的类型为下行子帧时, 选择该子帧为下行子帧。
方式三
所述根据所述用户设备的主分量载波上该子帧的类型, 和, 所述子帧上 传输的信道类型和 /或信号类型, 选择该子帧的子帧类型包括:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道传输和 / 或上行信号传输, 且在所述子帧的所述下行分量载波上有所述用户设备的 PHICH传输和 /或下行参考信号传输时,所述用户设备根据所述用户设备的主 分量载波上该子帧的子帧类型, 选择该子帧的子帧类型。 具体如何根据主分 量载波上该子帧的子帧类型, 选择该子帧的子帧类型参见方式二。
下面结合附图对本发明实施例提供的技术方案作进一步介绍。
实施例 1
本实施例中, 所述预定义的准则为所述子帧上传输的信道类型和 /或信号 类型; 所述优先级为上行信道或上行信号高于下行信道或上行信号。
在 TDD 系统中, 当一个子帧上存在上行分量载波和下行分量载波聚合 时, UE根据所述子帧上传输的信道类型和 /或信号类型, 选择该子帧为上行 子帧还是为下行子帧, 在所述上行分量载波上发送上行信息或在所述下行分 量载波上接收下行信息;
当 UE在所述子帧的所述上行分量载波上有上行信道和 /或上行信号传输 时, UE在所述子帧的所述上行分量载波上传输所述上行信道和 /或所述上行 信号; 此时所述子帧为上行子帧。
UE在所述子帧的所述下行分量载波上不接收下行信息;
当 UE在所述子帧的所述上行分量载波上没有上行信道和 /或上行信号传 输时, UE在所述子帧的所述下行分量载波上接收下行信息; 此时, 选择所述 子帧为下行子帧。
所述上行信道为物理上行共享信道和 /或物理上行控制信道和 /或物理上
行随机接入信道; 所述上行信号为测量参考信号 (SRS )和 /或数据解调参考 信号 (DMRS ) 。
实施例 2
本实施例中, 所述预定义的准则为所述子帧上传输的信道类型和 /或信号 类型; 所述优先级为 PHICH高于上行信道或上行信号。
在 TDD 系统中, 当一个子帧上存在上行分量载波和下行分量载波聚合 时, UE根据所述子帧上传输的信道类型和 /或信号类型, 选择该子帧为上行 子帧还是为下行子帧, 在所述上行分量载波发送上行信息或在所述下行分量 载波上接收下行信息;
当 UE在所述子帧的所述上行分量载波上有上行信道和 /或上行信号传输 且在所述子帧的所述下行分量载波上没有所述 UE的 PHICH传输时, UE在 所述子帧的所述上行分量载波上传输所述上行信道和 /或所述上行信号; 此 时, 选择所述子帧为上行子帧。
UE在所述子帧的所述下行分量载波上不接收下行信息;
当 UE在所述子帧的所述上行分量载波上有上行信道和 /或上行信号传输 且在所述子帧的所述下行分量载波上有所述 UE的 PHICH传输时, UE在所 述子帧的所述下行分量载波上接收下行信息; 此时, 选择所述子帧为下行子 帧。
UE在所述子帧的所述上行分量载波上不传输所述上行信道和 /或所述上 行信号传输;
当 UE在所述子帧的所述上行分量载波上没有上行信道和 /或上行信号传 输时, UE在所述子帧的所述下行分量载波上接收下行信息; 此时, 所述子帧 为下行子帧。
所述上行信道为物理上行共享信道和 /或物理上行控制信道和 /或物理上 行随机接入信道; 所述上行信号为测量参考信号 (SRS )和 /或数据解调参考 信号 (DMRS ) 。
实施例 3
本实施例中, 所述预定义的准则为所述子帧上传输的信道类型和 /或信号 类型; 所述优先级为: PHICH高于上行信道或上行信号; 物理随机信道高于 CSI-RS; 物理上行控制信道高于 CSI-RS; 承载上行控制信息的物理上行共享 信道高于 CSI-RS; CSI-RS高于没有承载上行控制信息的物理上行共享信道; SRS高于 CSI-RS。
在 TDD 系统中, 当一个子帧上存在上行分量载波和下行分量载波聚合 时, UE根据所述子帧上传输的信道类型和 /或信号类型, 选择该子帧为上行 子帧还是为下行子帧, 在所述上行分量载波上发送上行信息或所述下行分量 载波上接收下行信息;
当 UE在所述子帧的所述上行分量载波上没有上行信道传输和 /或上行信 号传输时, UE在所述子帧的所述下行分量载波上接收下行信息; 此时, 选择 所述子帧为下行子帧。
当 UE在所述子帧的所述上行分量载波上有上行信道传输和 /或上行信号 传输且在所述子帧的所述下行分量载波上没有所述 UE的 PHICH传输和 / 或没有所述 UE的下行参考信号传输时, UE在所述子帧的所述上行分量载波 上传输所述上行信道和 /或所述上行信号; 此时, 选择所述子帧为上行子帧。
当 UE在所述子帧的所述上行分量载波上有上行信道和 /或上行信号传输 且在所述子帧的所述下行分量载波上有所述 UE的 PHICH传输时, 根据预 定义的优先级, PHICH高于上行信道或上行信号, 则选择所述子帧为下行子 帧, UE在所述子帧的所述下行分量载波上接收下行信息。
当 UE在所述子帧的所述上行分量载波上有上行信道(没有承载上行控 制信息的物理上行共享信道)且在所述子帧的所述下行分量载波上没有所述 UE的 PHICH传输,有所述 UE的 CSI-RS传输时,根据预定义的优先级, CSI-RS 高于没有承载上行控制信息的物理上行共享信道; 此时, 选择所述子帧为下 行子帧, UE在所述子帧的所述下行分量载波上接收下行信息。
当 UE在所述子帧的所述上行分量载波上有上行信道(物理随机信道; 物理上行控制信道; 承载上行控制信息的物理上行共享信道)和 /或上行信号
( SRS )传输且在所述子帧的所述下行分量载波上没有所述 UE的 PHICH 传输, 有所述 UE的 CSI-RS传输时, 根据预定义的优先级, 物理随机信道高 于 CSI-RS;物理上行控制信道高于 CSI-RS;承载上行控制信息的物理上行共 享信道高于 CSI-RS, SRS高于 CSI-RS , 此时, 选择所述子帧为上行子帧, UE 在所述子帧的所述上行分量载波上传输所述上行信道和 /或所述上行信 号。
当所述子帧为上行子帧时, UE在所述子帧的所述下行分量载波上不接收 下行信息;
当所述子帧为下行子帧时, UE在所述子帧的所述上行分量载波上不传输 所述上行信息。
实施例 4
本实施例中,所述预定义的准则为才艮据主分量载波上该子帧的类型确定。 在 TDD 系统中, 当一个子帧上存在上行分量载波和下行分量载波聚合 时, UE根据主分量载波上该子帧的类型, 选择该子帧为上行子帧还是为下 行子帧, 在所述上行分量载波上发送上行信息或所述下行分量载波上接收下 行信息;
当主分量载波上该子帧的类型为上行子帧时, UE选择该子帧为上行子 帧, UE在所述子帧的所述上行分量载波上传输所述上行信道和 /或所述上行 信号;
当主分量载波上该子帧的类型为下行子帧时, UE选择该子帧为下行子 帧, UE在所述子帧的所述下行分量载波上接收下行信息。
当选择所述子帧为上行子帧时, UE在所述子帧的所述下行分量载波上不 接收下行信息;
当选择所述子帧为下行子帧时, UE在所述子帧的所述上行分量载波上不 传输所述上行信息。
实施例 5
本实施例中, 所述预定义的准则为所述子帧上传输的信道类型和 /或信号 类型, 以及主分量载波上该子帧的类型。
在 TDD 系统中, 当一个子帧上存在上行分量载波和下行分量载波聚合 时, UE根据所述子帧上传输的信道类型和 /或信号类型, 选择该子帧为上行 子帧还是为下行子帧, 在所述上行分量载波上发送上行信息或所述下行分量 载波上接收下行信息;
当 UE在所述子帧的所述上行分量载波上没有上行信道传输和 /或上行信 号传输时, UE在所述子帧的所述下行分量载波上接收下行信息; 此时, 选择 所述子帧为下行子帧。
当 UE在所述子帧的所述上行分量载波上有上行信道传输和 /或上行信号 传输且在所述子帧的所述下行分量载波上没有所述 UE的 PHICH传输和 / 或没有所述 UE的 CSI-RS传输时, UE在所述子帧的所述上行分量载波上传 输所述上行信道和 /或所述上行信号; 此时, 选择所述子帧为上行子帧;
当 UE在所述子帧的所述上行分量载波上有上行信道传输和 /或上行信号 传输且在所述子帧的所述下行分量载波上有所述 UE的 PHICH传输和 /或有 所述 UE的 CSI-RS传输时, UE根据主分量载波该子帧类型确定; 当主分量 载波上该子帧子帧类型为上行子帧时, UE选择该子帧为上行子帧, UE在所 述子帧的所述上行分量载波上传输所述上行信道和 /或所述上行信号; 当主分 量载波上该子帧类型为下行子帧时, UE选择该子帧为下行子帧, UE在所述 子帧的所述下行分量载波上接收下行信息;
当选择所述子帧为上行子帧时, UE在所述子帧的所述下行分量载波上不 接收下行信息;
当选择所述子帧为下行子帧时, UE在所述子帧的所述上行分量载波上不 传输所述上行信息。
本发明实施例还提供一种用户设备, 如图 3所示, 包括子帧类型确定单 元和传输控制单元, 其中:
所述子帧类型确定单元用于, 在时分双工系统中, 当一个子帧上存在上
行分量载波和下行分量载波聚合时, 根据预定义的准则, 选择该子帧的子帧 类型; 所述子帧类型为上行子帧或下行子帧;
所述传输控制单元用于: 根据所选的子帧类型在所述子帧的上行分量载 波上发送上行信息或在所述子帧的下行分量载波上接收下行信息, 所述上行 信息为上行信道和 /或上行信号, 所述下行信息为下行信道和 /或下行信号。
其中, 所述子帧类型确定单元是用于: 根据所述用户设备的主分量载波 上该子帧的类型, 和 /或, 所述子帧上传输的信道类型和 /或信号类型, 选择该 子帧的子帧类型。
其中, 所述子帧类型确定单元是用于:
当所述用户设备在所述子帧的上行分量载波上没有上行信道传输和 /或 上行信号传输时, 选择该子帧为下行子帧。
其中, 所述子帧类型确定单元是用于:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道传输和 / 或上行信号传输, 且在所述子帧的所述下行分量载波上没有所述用户设备的 物理混合自动重传请求指示信道 ( PHICH )传输和 /或下行参考信号传输时, 选择该子帧为上行子帧。
其中, 所述子帧类型确定单元是用于:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上有所述用户设备的 PHICH 传输和 /或下行参考信号传输时, 按照预定义的优先级, 根椐该子帧上传输的 信道和 /或信号, 和 /或, 该子帧的分量载波中优先级最高者确定该子帧的子帧 类型。
其中, 所述优先级为如下之一或不冲突的各优先级的组合:
上行信道或上行信号高于下行信道或下行信号;
下行信道或下行信号高于上行信道或上行信号;
主分量载波高于辅分量载波;
PHICH高于上行信道或上行信号;
上行信道或上行信号高于下行参考信号;
物理随机信道高于下行参考信号;
物理上行控制信道高于下行参考信号;
承载上行控制信息的物理上行共享信道高于下行参考信号;
测量参考信号 (SRS ) 高于下行参考信号;
下行参考信号高于没有承载上行控制信息的物理上行共享信道。
其中, 所述子帧类型确定单元是用于:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道传输和 / 或上行信号传输, 且在所述子帧的所述下行分量载波上有所述用户设备的 PHICH传输和 /或下行参考信号传输时,根据所述用户设备的主分量载波上该 子帧的子帧类型, 选择该子帧的子帧类型。
其中, 所述子帧类型确定单元才艮据所述用户设备的主分量载波上该子帧 的类型, 选择该子帧的类型包括:
当所述用户设备的主分量载波上该子帧的类型为上行子帧时, 选择该子 帧为上行子帧; 当所述用户设备的主分量载波上该子帧的类型为下行子帧时, 选择该子帧为下行子帧。
其中, 所述传输控制单元还用于: 当所述子帧类型确定单元选择所述子 帧为上行子帧时, 在所述子帧的下行分量载波上不接收下行信息。
其中, 所述传输控制单元还用于: 当所述子帧类型确定单元选择所述子 帧为下行子帧时, 在所述子帧的上行分量载波上不发送上行信息。
其中, 所述上行信道包括物理上行共享信道、 物理上行控制信道、 物理 上行随机接入信道之一或其组合;所述上行信号包括 SRS和 /或数据解调参考 信号 (DMRS ) 。
其中, 所述下行信道包括 PHICH, 所述下行信号包括下行参考信号。 其中, 所述下行参考信号包括 CSI-RS、 定位参考信号、 小区专有信号中 一种或多种。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤是可以 通过程序来指令相关的硬件完成, 所述的程序可以存储于一种计算机可读存 储介质中, 该程序在执行时, 包括方法实施例的步骤之一或其组合。
可选地, 上述实施例的全部或部分步骤也可以使用一个或多个集成电路 来实现。 在本发明各个实施例中的各功能单元可以釆用硬件的形式实现, 也 可以釆用软件功能模块的形式实现。 本发明不限制于任何特定形式的硬件和 软件的结合。 所述集成的模块如果以软件功能模块的形式实现并作为独立的 产品销售或使用时, 也可以存储在一个计算机可读取存储介质中。
上述提到的存储介质可以是只读存储器, 磁盘或光盘等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应以权利要求所述的保护范围为准。
工业实用性
上述技术方案中, 终端根据应用场景确定混合子帧为上行子帧还是为下 行子帧, 在相应的上行分量载波或下行分量载波上发送或接收数据, 从而达 到提高频谱效率的目的。 因此本发明具有很强的工业实用性。
Claims
1、 一种传输控制方法, 包括:
在时分双工系统中, 当一个子帧上存在上行分量载波和下行分量载波聚 合时, 用户设备根据预定义的准则, 选择所述子帧的子帧类型, 根据所选的 子帧类型在所述子帧的上行分量载波上发送上行信息或在所述子帧的下行分 量载波上接收下行信息;
其中, 所述子帧类型包括上行子帧或下行子帧;
所述上行信息包括上行信道和 /或上行信号, 所述下行信息包括下行信道 和 /或下行信号。
2、 如权利要求 1所述的传输控制方法, 其中, 所述预定义的准则包括: 所述用户设备的主分量载波上子帧的类型; 和 /或, 所述子帧上传输的信道类 型和 /或信号类型;
相应的, 用户设备根据预定义的准则, 选择所述子帧的子帧类型的步骤 包括: 所述用户设备根据所述用户设备的主分量载波上子帧的类型; 和 /或, 所述子帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型。
3、 如权利要求 2所述的传输控制方法, 其中, 用户设备根据所述子帧上 传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上没有上行信道传输和 /或上行信号传输时, 选择所述子帧的子帧类型为下行子帧。
4、 如权利要求 2所述的传输控制方法, 其中, 用户设备根据所述子帧上 传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上没有下行信道和 /或下行信 号传输时, 选择所述子帧的子帧类型为上行子帧。
5、 如权利要求 2所述的传输控制方法, 其中, 用户设备根据所述子帧上 传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上有下行信道和 /或下行信号 传输时, 按照预定义的优先级, 选择优先级最高的信号或信道对应的子帧的 类型为子帧类型。
6、 如权利要求 1-5中任一项所述的传输控制方法, 其中:
所述上行信道包括物理上行共享信道、 物理上行控制信道及物理上行随 机接入信道中的任意一种或其任意组合;
所述上行信号包括 SRS和 /或数据解调参考信号 ( DMRS ) 。
7、 如权利要求 1-5中任一项所述的传输控制方法, 其中:
所述下行信道包括物理混合自动重传请求指示信道(PHICH ) ; 所述下行信号包括下行参考信号。
8、 如权利要求 7所述的传输控制方法, 其中: 所述下行参考信号包括信 道状态信息参考信号 (CSI-RS ) 、 定位参考信号、 小区专有信号中的一种或 多种。
9、 如权利要求 5-8中任一项所述的传输控制方法, 其中, 所述优先级为 如下优先级中的任意一种或以下优先级中不冲突情况下的任意相互组合: 上行信道或上行信号高于下行信道或下行信号;
下行信道或下行信号高于上行信道或上行信号;
主分量载波高于辅分量载波;
PHICH高于上行信道或上行信号;
上行信道或上行信号高于下行参考信号;
物理随机信道高于下行参考信号;
物理上行控制信道高于下行参考信号;
承载上行控制信息的物理上行共享信道高于下行参考信号;
测量参考信号 (SRS ) 高于下行参考信号;
下行参考信号高于没有承载上行控制信息的物理上行共享信道。
10、 如权利要求 2所述的传输控制方法, 其中, 用户设备根据所述用户 设备的主分量载波上该子帧的类型, 选择所述子帧的类型的步骤包括: 当所述用户设备的主分量载波上所述子帧的类型为上行子帧时, 选择该 子帧为上行子帧; 当所述用户设备的主分量载波上该子帧的类型为下行子帧 时, 选择该子帧为下行子帧。
11、 如权利要求 2或 10所述的传输控制方法, 其中, 根据所述用户设备 的主分量载波上子帧的类型和所述子帧上传输的信道类型和 /或信号类型, 选 择所述子帧的子帧类型的步骤包括:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道传输和 / 或上行信号传输, 且在所述子帧的所述下行分量载波上有所述用户设备的 PHICH传输和 /或下行参考信号传输时,所述用户设备根据所述用户设备的主 分量载波上所述子帧的子帧类型, 选择所述子帧的子帧类型。
12、如权利要求 1-5及 10-11中任一所述的传输控制方法,该传输控制方 法还包括:
当所选的子帧类型为上行子帧时, 所述用户设备在所述子帧的下行分量 载波上不接收下行信息;
当所选的子帧类型为下行子帧时, 所述用户设备在所述子帧的上行分量 载波上不发送上行信息。
13、 一种用户设备, 包括子帧类型确定单元和传输控制单元, 其中: 所述子帧类型确定单元设置成: 在时分双工系统中, 当一个子帧上存在 上行分量载波和下行分量载波聚合时, 根据预定义的准则, 选择所述子帧的 子帧类型; 其中, 所述子帧类型包括上行子帧或下行子帧;
所述传输控制单元设置成: 根据所选的子帧类型在所述子帧的上行分量 载波上发送上行信息或在所述子帧的下行分量载波上接收下行信息; 其中, 所述上行信息包括上行信道和 /或上行信号, 所述下行信息包括下行信道和 / 或下行信号。
14、 如权利要求 13所述的用户设备, 其中, 所述预定义的准则包括: 所 述用户设备的主分量载波上该子帧的类型; 和 /或, 所述子帧上传输的信道类 型和 /或信号类型; 相应的, 所述子帧类型确定单元设置成按照以下方式选择所述子帧的子 帧类型: 才艮据所述用户设备的主分量载波上所述子帧的类型; 和 /或, 所述子 帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型。
15、 如权利要求 14所述的用户设备, 其中, 所述子帧类型确定单元设置 成按照以下方式中的任意一种根据所述子帧上传输的信道类型和 /或信号类 型, 选择所述子帧的子帧类型:
当所述用户设备在所述子帧的上行分量载波上没有上行信道传输和 /或 上行信号传输时, 选择该子帧为下行子帧。
16、 如权利要求 14所述的用户设备, 其中, 所述子帧类型确定单元设置 成按照以下方式中的任意一种根据所述子帧上传输的信道类型和 /或信号类 型, 选择所述子帧的子帧类型:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上没有所述下行信道和 /或下 行信号传输时, 选择该子帧为上行子帧。
17、 如权利要求 14所述的用户设备, 其中, 所述子帧类型确定单元设置 成按照以下方式中的任意一种根据所述子帧上传输的信道类型和 /或信号类 型, 选择所述子帧的子帧类型:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道和 /或上 行信号传输, 且在所述子帧的所述下行分量载波上有所述下行信道和 /或下行 信号传输时, 按照预定义的优先级, 选择优先级最高的信号或信道对应的子 帧的类型为子帧类型。
18、 如权利要求 13-17中任一项所述的用户设备, 其中:
所述上行信道包括物理上行共享信道、 物理上行控制信道及物理上行随 机接入信道中的任意一种或其任意组合;
所述上行信号包括 SRS和 /或数据解调参考信号 ( DMRS ) 。
19、 如权利要求 13-17中任一项所述的用户设备, 其中:
所述下行信道包括 PHICH;
所述下行信号包括下行参考信号。
20、 如权利要求 19所述的用户设备, 其中, 所述下行参考信号包括信道 状态信息参考信号 (CSI-RS ) 、 定位参考信号、 小区专有信号中的一种或多 种。
21、 如权利要求 17-20 中任一项所述的用户设备, 其中, 所述优先级为 如下优先级中的任意一种或以下优先级中不冲突情况下的任意相互组合: 上行信道或上行信号高于下行信道或下行信号;
下行信道或下行信号高于上行信道或上行信号;
主分量载波高于辅分量载波;
PHICH高于上行信道或上行信号;
上行信道或上行信号高于下行参考信号;
物理随机信道高于下行参考信号;
物理上行控制信道高于下行参考信号;
承载上行控制信息的物理上行共享信道高于下行参考信号;
测量参考信号 (SRS ) 高于下行参考信号;
下行参考信号高于没有承载上行控制信息的物理上行共享信道。
22、 如权利要求 14所述的用户设备, 其中, 所述子帧类型确定单元设置 成按照以下方式根据所述用户设备的主分量载波上所述子帧的类型, 选择所 述子帧的子帧类型包括:
当所述用户设备的主分量载波上所述子帧的类型为上行子帧时, 选择所 述子帧的子帧类型为上行子帧; 当所述用户设备的主分量载波上所述子帧的 类型为下行子帧时, 选择所述子帧的子帧类型为下行子帧。
23、 如权利要求 14或 22所述的用户设备, 其中, 所述子帧类型确定单 元设置成按照以下方式根据所述用户设备的主分量载波上子帧的类型和所述 子帧上传输的信道类型和 /或信号类型, 选择所述子帧的子帧类型:
当所述用户设备在所述子帧的所述上行分量载波上有上行信道传输和 / 或上行信号传输, 且在所述子帧的所述下行分量载波上有所述用户设备的 PHICH传输和 /或下行参考信号传输时,根据所述用户设备的主分量载波上所 述子帧的子帧类型, 选择所述子帧的子帧类型。
24、 如权利要求 13-17及 22-23中任一所述的用户设备, 其中, 所述传输控制单元还设置成: 当所述子帧类型确定单元所选的子帧类型 为上行子帧时, 在所述子帧的下行分量载波上不接收下行信息; 当所述子帧 类型确定单元所选的子帧类型为下行子帧时, 在所述子帧的上行分量载波上 不发送上行信息。
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