WO2012092720A1 - 探测参考信号的发送方法、基站和用户设备 - Google Patents
探测参考信号的发送方法、基站和用户设备 Download PDFInfo
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- WO2012092720A1 WO2012092720A1 PCT/CN2011/070090 CN2011070090W WO2012092720A1 WO 2012092720 A1 WO2012092720 A1 WO 2012092720A1 CN 2011070090 W CN2011070090 W CN 2011070090W WO 2012092720 A1 WO2012092720 A1 WO 2012092720A1
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- reference signal
- sounding reference
- resource
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- 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
Definitions
- the present invention relates to the field of wireless communications, and in particular, to a method for transmitting a sounding reference signal, a base station, and a user equipment. Background technique
- the Sounding Reference Symbol is a signal sent by the user equipment (UE: User Equipment) to the base station, and is used for channel quality detection, power control, timing estimation, and direction of arrival estimation for downlink beamforming. Reference signal.
- a user equipment UE In a Long-term Evolution System (LTE), a user equipment UE according to resources indicated by a base station (eNB: e-NodeB), such as a transmission bandwidth, a frequency domain start position, a periodic shift (CS: Cyclic Shift), and a child
- the parameters such as the frame shift periodically transmit the sounding reference signal SRS and are transmitted in the last OFDM (Orthogonal Frequency Division Multiplexing) symbol of each subframe.
- the base station eNB determines the uplink radio signal information (CSI: Channel State Information) of the user equipment UE according to the received sounding reference signal SRS, and performs frequency domain selection scheduling and the like according to the obtained wireless signal information CSI.
- the resource indicated by the base station eNB is configured by a higher layer, that is, a Radio Resource Control (RRC).
- RRC Radio Resource Control
- the transmission of the aperiodic sounding reference signal SRS is added.
- the sounding reference signal periodically transmitted is referred to as a periodic sounding reference signal SRS
- the sounding reference signal transmitted aperiodically is referred to as a non-periodic sounding reference signal SRS.
- the downlink control signaling (DCI: Downlink Control Information) sent by the base station is triggered, that is, the DCI format 0 and the DCI format 4 are used to notify the user equipment whether to send the aperiodic sounding reference signal SRS, and The resource used in the case of the aperiodic sounding reference signal SRS.
- the lbit in the DCI format 0 can be used to trigger the aperiodic sounding reference signal SRS, which In the case, '0' means that the aperiodic sounding reference signal is not sent, 'represents that the aperiodic sounding reference signal is transmitted, and only one set of resources is indicated.
- the non-periodic sounding reference signal SRS is triggered by the 2 bit in the DCI format 4, where "00" indicates that the aperiodic sounding reference signal is not transmitted, and "01/10/11" indicates that the non-periodic signal is transmitted.
- the reference signal is detected and three sets of resources are indicated, respectively.
- a set of resources is configured, or even if three sets of resources are configured, the probability of collision of the aperiodic sounding reference signal SRS is still high, and resource allocation flexibility is limited. .
- An object of the embodiments of the present invention is to provide a method for transmitting a sounding reference signal, a base station, and a user equipment.
- the base station uses downlink control information for uplink transmission, such as DCI format 0 or a new data indicator in DCI format 4 (NDI).
- DCI format 0 or a new data indicator in DCI format 4 NDI
- the bit of the new data indicator and the bit of the aperiodic sounding reference signal request (A-SRS Request) are used to send the indication information, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS according to the indication information, which is effective.
- A-SRS Request aperiodic sounding reference signal request
- An aspect of the present invention provides a method for transmitting a sounding reference signal, the method comprising: generating, by a base station, downlink control information for uplink transmission, where the downlink control information includes indicating whether the user equipment sends an aperiodic sounding reference signal And indicating information of the used resource when transmitting the aperiodic sounding reference signal; and using the bit of the new data indicator in the downlink control information and the bit requested by the aperiodic sounding reference signal to carry the indication information;
- a method for transmitting a sounding reference signal includes: receiving, by a user equipment, downlink control information for uplink transmission sent by a base station, where the downlink control information includes indicating whether the user equipment is Transmitting an aperiodic sounding reference signal and indication information of a resource used when transmitting the aperiodic sounding reference signal; and the base station utilizes bit and aperiodic of the new data indicator in the downlink control information Detecting a bit of the reference signal request to carry the indication information;
- the user equipment performs transmission of the aperiodic sounding reference signal according to the indication information.
- a base station includes: an information generating unit, configured to generate downlink control information for uplink transmission, where the downlink control information includes indicating whether the user equipment sends a non- a periodic sounding reference signal, and indication information of a resource used when transmitting the aperiodic sounding reference signal; and utilizing bits of the new data indicator in the downlink control information and bits requested by the aperiodic sounding reference signal Carrying the indication information;
- an information sending unit configured to send the downlink control information to the user equipment, so that the user equipment performs the sending of the aperiodic sounding reference signal according to the indication information included in the downlink control information.
- a user equipment is provided, where the user equipment includes:
- An information receiving unit configured to receive downlink control information for uplink transmission sent by the base station, where the downlink control information includes: indicating whether the user equipment sends the aperiodic sounding reference signal, and transmitting the aperiodic sounding reference And the indication information of the used resource; and using the bit of the new data indicator in the downlink control information and the bit requested by the aperiodic sounding reference signal to carry the indication information;
- an information processing unit configured to perform transmission of the aperiodic sounding reference signal according to the indication information received by the information receiving unit.
- a computer readable program wherein when the program is executed in a base station, the program causes a computer to execute the transmission method of the sounding reference signal in the base station.
- a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a method of transmitting the sounding reference signal in a base station.
- a computer readable program wherein when the program is executed in a user equipment, the program causes the computer to execute the transmission method of the sounding reference signal in the user equipment.
- Another aspect according to an embodiment of the present invention provides a computer readable program stored The storage medium, wherein the computer readable program causes the computer to execute the method of transmitting the sounding reference signal in the user equipment.
- the beneficial effects of the embodiments of the present invention are as follows:
- the base station utilizes downlink control information for uplink transmission, such as bit and aperiodic sounding reference of a new data indicator (NDI: New Data Indicator) in DCI format 0 or DCI format 4
- NDI New Data Indicator
- A-SRS Request is sent to send the indication information, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS according to the indication information, so that the DCI format 0 or the DCI format 4 can be effectively utilized.
- the bits used in turn, increase the resources available for selection, reducing the collision of the aperiodic sounding reference signal SRS.
- FIG. 1 is a flowchart of a method for transmitting a non-periodic sounding reference signal according to Embodiment 1 of the present invention
- FIG. 2 is a flowchart of a method for transmitting a non-periodic sounding reference signal according to Embodiment 3 of the present invention
- FIG. 4 is a flowchart of a method for transmitting a non-periodic sounding reference signal on a user equipment side according to Embodiment 4 of the present invention
- 5 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention
- 6 is a schematic structural diagram of a base station according to Embodiment 6 of the present invention
- FIG. 7 is a schematic structural diagram of a base station according to Embodiment 7 of the present invention.
- Embodiment 8 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention.
- FIG. 9 is a schematic structural diagram of a user equipment according to Embodiment 9 of the present invention.
- FIG. 10 is a block diagram showing the structure of an information processing unit according to Embodiment 9 of the present invention.
- FIG. 11 is a block diagram showing the configuration of an information processing unit according to a ninth embodiment of the present invention. detailed description
- FIG. 1 is a flow chart of a method for transmitting a sounding reference signal in Embodiment 1 of the present invention. As shown in Figure 1, the method includes:
- Step 101 The base station generates downlink control information DCI for uplink transmission, where the downlink control information includes resources used to indicate whether the user equipment UE sends an aperiodic sounding reference signal, and when the aperiodic sounding reference signal is sent. And indicating the indication information by using a bit of the new data indicator in the downlink control information and a bit requested by the aperiodic sounding reference signal;
- Step 102 The base station sends the downlink control information DCI to the user equipment UE, so that the user equipment UE performs the transmission of the aperiodic detection reference signal SRS according to the indication information included in the downlink control information DCI.
- the downlink control signaling (DCI) sent by the uplink PUSCH such as DCI format 0 and DCI format 4, may be used.
- the user equipment UE is instructed to perform the transmission of the aperiodic sounding reference signal SRS, and when the user equipment UE is instructed to send the aperiodic sounding reference signal SRS, the resource information used for transmitting the aperiodic sounding reference signal SRS is indicated.
- Table 1 is a 10-leg z bandwidth configuration in an LTE-A FDD system according to an embodiment of the present invention, DCI The bearer information and length of format 0.
- the 3 bit carrier indication is configurable only in the user-specific search space
- the lbit aperiodic SRS request is configurable only in the user-specific search space
- the 2-bit aperiodic CQI request is configurable only in the user-specific search space, in the common search space.
- single carrier is only configured as lbit, and the load in the table does not count padding bits.
- Table 2 is the bearer information and length of the DCI format 4 in the LTE-A FDD system according to the embodiment of the present invention.
- the 3-bit carrier indication is configurable only in the user-specific search space, and the 2-bit aperiodic CQI request is configurable only in the case of multiple carriers, and is only configured as lbit in the single carrier.
- the load in the table does not count padding bits.
- DMRS cyclic shift and Orthogonal mask Cyclic shift for DMRS and OCC
- Acyclic SQ request A-SRS request
- Multi-cluster flag 1 Payload 28/31
- DMRS cyclic shift and Orthogonal mask Cyclic shift for DMRS and OCC
- Acyclic SQ request A-SRS request
- Multi-cluster flag 1
- the user equipment can include the aperiodic channel state information CSI in the uplink control information through the physical
- the uplink control information UCI including the aperiodic CSI transmitted on the PUSCH may be classified into: 1) the uplink control information UCI is separately transmitted on the PUSCH (CQI-only PUSCH), that is, in the transmission. The uplink data is not transmitted during the aperiodic CSI; 2) the uplink control information UCI is transmitted on the PUSCH together with the uplink data, that is, the uplink data is also transmitted when the aperiodic CSI is transmitted.
- NDI New Data Indicator
- the base station uses downlink control information for uplink physical uplink shared channel (PUSCH) transmission, such as DCI format 0 or a new data indicator (NDI: New Data Indicator) in DCI format 4.
- PUSCH physical uplink shared channel
- NDI New Data Indicator
- the bits together with the bits of the aperiodic sounding reference signal request (A-SRS Request) carry indications for indicating the triggering of the aperiodic sounding reference signal SRS and resource information indicating the transmission of the aperiodic sounding reference signal SRS.
- A-SRS Request aperiodic sounding reference signal request
- the unused bits in the DCI format 0 or DCI format 4 can be effectively utilized, and the resources to be selected can be added, thereby reducing collision of the aperiodic sounding reference signal SRS.
- the base station may generate corresponding downlink control information DCI according to the transmission mode and the system requirement, which is similar to the prior art, and is not described herein again;
- the bit of the new data indicator NDI in DCI format 0 or 4 and the bit of the aperiodic sounding reference signal request (A-SRS Request) are used to trigger the transmission of the aperiodic sounding reference signal SRS, that is, whether to send aperiodic detection
- the method may further include: Step: the base station configures resources used for sending the aperiodic SRS, and configures the The resource notifies the user device.
- the base station can be configured through high layer signaling, such as the RRC protocol.
- the base station configures resources used for transmitting the aperiodic SRS, and may adopt the following methods:
- the first type the base station is configured with a plurality of groups of resources, each of the plurality of groups of resources includes resource information used for sending the aperiodic sounding reference signal; and the configured plurality of groups of resources are corresponding to corresponding indication information.
- the resource indicated by the user equipment UE in the indication information is one of a plurality of pre-configured resources.
- the resource information configured by the base station may be a subset of the resource information of the sounding reference signal SRS of the transmission period configured by the base station.
- Example 1 for DCI format 0, when the NDI of the lbi t and the A-SRS request of the lbit are used to carry the indication information, the base station may configure three groups of resources, respectively corresponding to different states; where, “00” indicates that the aperiodic is not sent. SRS; "01/10/11" means sending aperiodic SRS, and different states correspond to different resources;
- Example 2 For the DCI format 4, when the NDI and the 2 bit A-SRS request of the Lbi are used to carry the indication information, the base station can configure 7 groups of resources, which respectively correspond to different states; wherein, “000” indicates that the aperiodic is not sent. SRS; "001/010/011/100/101/110/111" means sending a non-periodic SRS, and different states correspond to different resources;
- the lbit of the utilized NDI may be a transport block used (TB: Transport Block)
- Transport Block One bit of the corresponding NDI may be one bit of the NDI corresponding to the unused transport block TB, and it is preferable to use one bit of the used NDI to make full use of the used bits.
- Example 3 For DCI format 4, when the indication information is carried by the 2 bit NDI and the 2 bit A-SRS request, the base station can configure 15 groups of resources, respectively corresponding to different states; wherein, "0000" indicates that the aperiodic SRS is not sent. ;
- the second type the base station configures a part of the resource information in the resource information used for sending the aperiodic sounding reference signal, and stores the resource information;
- the base station configures multiple groups of resources required to send the aperiodic sounding reference signal except the part of the resource information; and the resources required to send the aperiodic sounding reference signal except the part of the resource information
- the indication information is correspondingly stored;
- the base station indicates that the user equipment UE sends the aperiodic sounding reference signal SRS
- the resource indicated by the user equipment in the indication information is sent by the non-periodic sounding reference signal except the part of the resource. Resources needed.
- This situation saves the overhead of high-level information compared to the first one.
- the resource information shared with the SRS of the transmission period may not be included in a set of partial resource information configured by the base station.
- the third type the base station configures a plurality of groups of resources that are one less than the number of states of the bits of the aperiodic SRS request, and stores the configured plurality of groups of resources corresponding to the status of the bits requested by the aperiodic sounding reference signal;
- Each of the plurality of sets of resources includes part of resource information used in transmitting resource information used by the aperiodic sounding reference signal;
- the base station configures, by the same number of states as the number of bits of the new data indicator, a plurality of sets of resources required to transmit the aperiodic sounding reference signal except the part of the resource information; and the configured plurality of sets of resources and the new data indication
- the state of the bits of the device is correspondingly stored;
- the resource indicated by the user equipment in the indication information includes a resource corresponding to a state of a bit of the NDI, and a resource corresponding to a state of a bit of the non-periodic SRS request. For this case, an example will be described below.
- the fourth type when the base station dynamically configures multiple groups of resources other than the part of the resource information to send the non-period sounding reference signal SRS, it may be specifically:
- the bit of the NDI is 1 bit
- the state of the bit of the NDI and the state of the bit requested by the aperiodic detection reference signal are respectively used to indicate different resource information
- bit of the new data indicator is 2 bits
- the state of 1 bit of the new data indicator is used to indicate a resource
- another bit of the indicator of the new data and the aperiodic sounding reference The bits of the signal request are used to indicate another resource.
- the shared resource in the resource used for transmitting the aperiodic SRS and the resource used in the SRS of the transmission period may be pre-configured and notified to the user equipment UE, so that the base station configures to send the aperiodic SRS.
- this part of the shared resources may not be configured to save high-level signaling.
- the following takes the case where the base station generates DCI format 0 and DCI format 4 as an example.
- Example 1 For DCI format 0
- the indication information is carried by the lbit of the new data indicator NDI and the lbi t of the aperiodic SRS request, which are 2 bits ' ⁇ '; wherein, for example, "X" is NDI
- the state corresponding to the bit, " ⁇ ” is the state corresponding to the bit requested by the A-SRS, and vice versa.
- the base station may pre-configure three sets of resources, each of the three sets of resources includes resource information used to send the aperiodic sounding reference signal; and then the configured three sets of resources are And indicating, by the user equipment, that the resource used by the user equipment is one of three pre-configured resources; wherein the three groups of resources are used by the user equipment to send the non-period sounding reference signal. It is configured through high-level signaling, such as through the Radio Resource Control (RRC) protocol.
- RRC Radio Resource Control
- the transmitting, by the user equipment UE, the aperiodic SRS in the predetermined time may include: if the user equipment UE receives the DCI including the indication information in the nth subframe, the user equipment UE satisfies the first one after at least four subframes. Sub-frames with periodic and offset conditions send aperiodic SRS o
- the resource information may include: SRS periodicity (SRS Periodicity), SRS offset (SRS Subframe Offset), SRS bandwidth (SRS Bandwidth), Frequency Domain Position (Frequency Domain Position), and Skip I Bandwidth (SRS) Hopping Bandwidth ) (if frequency hopping is supported), Transmission Comb, Cyclic Shift, antenna information, such as Number of Antenna Ports, or carrier information, such as component carrier index Number (Number of CC Index) and so on.
- SRS periodicity SRS Periodicity
- SRS offset SRS Subframe Offset
- SRS bandwidth SRS Bandwidth
- Frequency Domain Position Frequency Domain Position
- SRS Skip I Bandwidth
- Transmission Comb Cyclic Shift
- antenna information such as Number of Antenna Ports
- carrier information such as component carrier index Number (Number of CC Index) and so on.
- the base station notifies the user equipment of the configured mapping relationship as shown in Table 3 and stores it on the user equipment UE side.
- the base station may according to the indication information, And a mapping relationship between the pre-stored indication information and the used resource (as shown in Table 3) to determine whether to send the aperiodic sounding reference signal SRS, and in the case of transmitting the aperiodic sounding reference signal SRS, determine the resource used.
- the resource information used by the base station to transmit the aperiodic sounding reference signal SRS may include all resource information required to send the aperiodic sounding reference signal SRS.
- Each group of resources is the same as the resource information corresponding to the periodic SRS, but the specific value may be different from the periodic SRS.
- Example 2 For DCI format 0
- some resource information is the sounding reference signal SRS and the aperiodic sounding reference signal SRS.
- the shared base station generally configures all the resource information used by the periodically transmitted SRS through the high layer signaling. Therefore, when the base station uses the high layer signaling configuration to send the resource information used by the aperiodic sounding reference signal SRS, And configuring the shared resources, so that the resource information used by each of the plurality of groups of resources configured by the base station to send the aperiodic sounding reference signal SRS is periodically configured by the base station by using high layer signaling.
- the user equipment UE can send the aperiodic SRS according to the resources used by the base station to send the aperiodic SRS and the pre-stored shared resources.
- Table 4 is a table of relationship between 2-bit indication information and corresponding resources in the embodiment of the present invention.
- the resource used by the base station to transmit the aperiodic SRS is a subset of the resources used by the SRS of the transmission period.
- the table 4 includes a part of resources of all resources required for transmitting the aperiodic SRS, that is, does not include the shared resource, such as the SRS period and the SRS offset, if it is determined to send the aperiodic SRS, according to the indication Information, pre-stored indication information and the used resource mapping relationship (as shown in Table 4) to determine the resource used to send the aperiodic SRS, and then the user equipment UE uses the determined resource and the pre-stored shared resource to send the aperiodic SRS .
- the following dynamics may also be adopted. Configured to configure the resources used to send the aperiodic sounding reference signal SRS.
- the base station configures a part of resource information in the resource information used to send the aperiodic sounding reference signal SRS, and the part of the resource information may be configured by the base station by using high layer signaling, such as RRC; and then configuring the part of the resource information.
- RRC high layer signaling
- the part of the resource information may be part of the resource information required for the user equipment UE to send the aperiodic sounding reference signal SRS, that is, a subset of the resource information required for transmitting the aperiodic sounding reference signal SRS; And configuring, according to the part of the resource information, a resource required for sending the aperiodic sounding reference signal; wherein the resource includes one or more of resources other than the partial resource information configured by the high layer signaling, as the case may be And the base station stores the resource other than the partial resource information configured by the high-level signaling and the corresponding indication information, and notifies the user equipment UE and stores the corresponding relationship on the user equipment UE side.
- the resource indicated by the user equipment UE in the indication information is a resource required to send the aperiodic sounding reference signal SRS except the part of the resource.
- the information used by the user equipment UE to transmit the aperiodic sounding reference signal SRS can be partially configured by the high layer signaling, and partially indicated by the indication information, so that the overhead of the high layer signaling can be reduced, and the non-transmission can be more flexible.
- the periodic sounding reference signal SRS reduces the probability of collision between user equipment UEs.
- the dynamically configured resource information may include one or a few of the antenna information, the carrier information, and the cyclic shift, but is not limited thereto, and the dynamically configured resources may be determined according to actual conditions.
- Table 5 is a part of resource information in a group of resource information used by the base station to transmit the aperiodic sounding reference signal SRS configured by RRC signaling. For example, compared with Table 3, the number of antenna ports is not configured. The number of the antenna ports is dynamically configured by the base station through the indication information, as shown in Table 6.
- Table 6 shows the number of antenna ports dynamically configured in the embodiment of the present invention (Number of antenna Ports) A mapping table with the indication information. Table 6
- the base station may also configure, by using RRC signaling, a part of resource information in the resource information used to send the aperiodic sounding reference signal SRS, such as not including a classified carrier index or a cyclic shift, and the information may be dynamically performed by the base station.
- Table 7 is a mapping relationship between the component of component carriers and the indication information in the embodiment of the present invention.
- Table 8 is a table of mapping relationship between Cyclic Shift and indication information in the embodiment of the present invention. Table 7
- the base station in the case of dynamically indicating resources, notifies the user equipment of the mapping relationship shown in Table 6 or Table 7 or Table 8, and a group of partial resource information configured through the upper layer, and is on the user equipment UE side.
- the user equipment UE When the user equipment UE receives the downlink control information DCI, it may determine whether to send the aperiodic sounding reference signal SRS according to the indication information therein, and in the case of transmitting the aperiodic sounding reference signal SRS, according to the The indication information, and the mapping relationship between the pre-stored indication information and the used resource (such as Table 6 or Table 7 or Table 8) determine the dynamically allocated resource information, and the user equipment UE utilizes the dynamically allocated resource information and the predicted high-level letter.
- the configured partial resource information is sent with a non-periodic sounding reference signal SRS.
- the part of the resource information shown in Table 4 includes the resources shared by the detection reference signal SRS of the transmission period and the non-period detection reference signal SRS.
- the resources shown in Table 5 of the base station configuration may not include the resources shared by the periodic SRS. For example, SRS periods, SRS offsets, etc. are not included.
- Table 9 is a group of base station configured by RRC signaling to send the aperiodic sounding reference signal.
- the mapping information between the indication information and the pre-stored indication information and the used resource may be used according to the information (such as Table 6 or Table 7 or Table 8) determines the resources used, and then transmits the aperiodic sounding reference signal SRS using the determined resources, a set of resources configured by the base station (e.g., Table 9), and the pre-stored shared resources.
- the base station carries the indication information by using the NDI bit and the A-SRS request bit in the uplink DCI format O, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS, thereby enabling the user to
- the device timely sends the aperiodic sounding reference signal, which can effectively utilize unused bits in the DCI format O, and can increase An alternative resource to reduce the collision of the aperiodic sounding reference signal SRS.
- the bit carrying the indication information is 1 bit of the NDI, and 2 bits of the A-SRS request.
- “Z” corresponds to 1 bit of NDI
- "XY” corresponds to 2 bits of A-SRS request.
- the base station may pre-configure seven groups of resources, each of the seven groups of resources includes resource information used to send the aperiodic sounding reference signal; and then the configured seven groups of resources are And indicating, by the user equipment, that the resource used by the user equipment is one of the pre-configured seven groups of resources; wherein the seven groups of resources are used by the user equipment to send the non-period sounding reference signal. It is configured through high-level signaling, such as through the Radio Resource Control (RRC) protocol.
- RRC Radio Resource Control
- Table 10 is the resource information used by the seven groups of the base station configured by the RRC signaling to transmit the aperiodic sounding reference signal SRS. Table 10
- the bit carrying the indication information is 1 bit of the NDI, and 2 bits of the A-SRS request.
- the base station configures multiple sets of resources according to one bit of the NDI and two bits of the non-periodic SRS. Where “Z” corresponds to 1 bit of the NDI; “XY” corresponds to 2 bits of the A-SRS request.
- Table 1 1 shows three sets of resources corresponding to the state of two bits of the aperiodic SRS request configured by the base station of the present invention through RRC signaling.
- Table 12 is two sets of resources corresponding to the state indicated by one bit of the NDI configured by the base station of the present invention through RRC signaling.
- Table 11
- the description is made by taking two uplink component carriers CC whose index numbers are #1 and #2 as an example.
- CC whose index numbers are #1 and #2 as an example.
- the base station eNB and the user equipment UE both know the mapping relationship.
- the resource corresponding to 1 bit of the NDI is the number of CC indexes, and the resource corresponding to the bit requested by the A-SRS is other resources.
- the user equipment UE is notified, and the user equipment UE stores the foregoing resources. If the DCI is received, the indication information is read therefrom, if the 1 bit of the NDI corresponds to "0", the A-SRS request 2 If the bit corresponds to "11", the user equipment UE can determine that the resource used is "#2 CC" and the other resources are resources corresponding to "11” in Table 11.
- processing of the shared resource is similar to that of the second embodiment, and is not described here.
- the bit carrying the indication information is 1 bit of the NDI, and 2 bits of the A-SRS request.
- “Z” corresponds to 1 bit of NDI
- "XY” corresponds to 2 bits of A-SRS request.
- the base station configures a group of resources for transmitting resources required for the aperiodic SRS, and other resources are dynamically configured by the base station.
- Table 13 is a partial resource of a group of resources required for transmitting aperiodic SRS configured by a base station in the embodiment of the present invention.
- Table 14 is a set of seven resources other than the resources of Table 13 dynamically configured by the base station. In this embodiment, the number of antennas and the CC index can be used.
- the bit of the NDI is 1 bit
- the state of the bit representation of the NDI and the state of the request bit of the aperiodic SRS are respectively used to indicate different resource information.
- the lbit "Z" of the NDI indicates the number of antennas; the request bit "XY" of the aperiodic SRS corresponds to the CC index.
- the user equipment UE is notified and stored at the user equipment UE; if the DCI is received, the indication information is read therefrom, if the 1 bit of the NDI corresponds to “0”, the A-SRS request The 2 bits correspond to "10", and the user equipment UE can determine that the resource used is a CC: whose number of antennas is 2 and whose index number is C2, and a group of resources in Table 13.
- the bits carrying the indication information are 2 bits of the NDI, and 2 bits of the A-SRS request.
- the bits carrying the indication information are 2 bits of the NDI, and 2 bits of the A-SRS request. It is expressed as "WZXY" in the order of NDI to A-SRS. Among them, “WZ” corresponds to 2 bits of NDI; “XY” corresponds to 2 bits of A-SRS request.
- the base station configures a group of resources for transmitting resources required for the aperiodic SRS, as shown in Table 15; other resources are dynamically configured by the base station.
- Table 15 is a partial resource of a group of resources required for transmitting aperiodic SRS configured by a base station in the embodiment of the present invention.
- Table 16 is a set of seven resources other than the resources of Table 15 dynamically configured by the base station. In this embodiment, it is possible to transmit the comb and the cyclic displacement.
- Table 15 Table 16 Table 16
- the state "W" of the 1 bit of the NDI is used to indicate a resource, that is, the transmission comb; the state of another bit of the NDI"
- the Z" and aperiodic SRS request bits are used in conjunction to indicate another resource, such as a cyclic shift.
- two bits of the NDI may be used to indicate one resource
- the request bit of the A-SRS may be used to indicate another resource
- the user equipment UE After the base station is configured with the foregoing resources, the user equipment UE is notified, and the user equipment UE stores the resource information of the foregoing configuration.
- the indication information is read, and the order of reading may be preset. For example, read in the order of "WZXY", and then send aperiodic SRS according to the resources configured in Table 15 and Table 16.
- Figure 2 is a flow chart showing a method of transmitting a sounding reference signal according to Embodiment 3 of the present invention. As shown in Figure 3, the method includes:
- Step 201 The user equipment UE receives downlink control information sent by the base station for uplink transmission.
- the downlink control information DCI includes indication information indicating whether the user equipment UE transmits an aperiodic sounding reference signal and a resource used when transmitting the aperiodic sounding reference signal; and the base station uses the downlink control information The indication of the new data indicator bit and the aperiodic sounding reference signal request bit;
- Step 202 The user equipment UE performs transmission of the aperiodic sounding reference signal SRS according to the indication information.
- the downlink control information DCI for uplink transmission may be downlink control information DCI for uplink PUSCH transmission, such as DCI format 0 or 4.
- the base station sends the indication information by using the NDI bit and the A-SRS request bit in the downlink control information indicating the uplink transmission, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS.
- the user equipment is enabled to timely transmit the aperiodic sounding reference signal, and effectively utilize unused bits in the DCI format O or 4; in addition, the selected resources may be added to reduce collision of the aperiodic sounding reference signal SRS.
- the base station configures the resource information used by the non-period sounding reference signal SRS by using the high layer signaling, as described in Embodiment 2; and notifies the user equipment UE and pre-stores the base station through the upper layer on the user equipment UE side. Configured resource information.
- the user equipment UE performs the sending of the aperiodic sounding reference signal according to the indication information, which may include: if the user equipment determines that the indication information is to send the aperiodic sounding reference signal Instructing, the user equipment determines, according to the indication information, and the first mapping relationship between the pre-stored indication information and the resource, the resource used to send the aperiodic sounding reference signal; the user equipment sends the non-determined resource by using the determined resource The periodic sounding reference signal, or the determined resource and the pre-stored resource, is used to transmit the aperiodic sounding reference signal.
- the indication information may include: if the user equipment determines that the indication information is to send the aperiodic sounding reference signal Instructing, the user equipment determines, according to the indication information, and the first mapping relationship between the pre-stored indication information and the resource, the resource used to send the aperiodic sounding reference signal; the user equipment sends the non-determined resource by using the determined resource
- the first resource mapping relationship is a correspondence between the group of resources configured by the base station and the indication information, where each group of the resources includes the resource used for sending the aperiodic sounding reference signal.
- Information (similar to Example 1 and Example 2 in Examples 2, and Examples 5 and 8).
- the pre-stored information may be a shared resource.
- the user equipment UE performs the aperiodic sounding reference signal transmission according to the indication information, which may include: if the user equipment UE determines that the indication information is a non-periodic sounding reference signal. And the user equipment UE determines, according to the indication information, and the pre-stored indication information and the second mapping relationship of the resources, the resource used for sending the aperiodic sounding reference signal; the user equipment UE uses the pre-stored resource, and Determining the resource to send the aperiodic sounding reference signal;
- the second mapping relationship is a correspondence between the resources required to send the aperiodic sounding reference signal and the indication information except for part of the resource information used by the base station to transmit the aperiodic sounding reference signal. Relationship (similar to Examples 3, 4, 7 and 9 in Example 2).
- the bit of the NDI when the bit of the NDI is 1 bit, the state of the bit of the NDI and The status of the bits of the aperiodic sounding reference signal request may be used to indicate different resource information, respectively (similar to Example 7 of Embodiment 2); or, when the bit of the NDI is 2 bits, the state of 1 bit of the NDI A bit used to indicate one resource, another bit and the aperiodic sounding reference signal request is used to indicate another resource (similar to Example 9 of Embodiment 2).
- the user equipment UE performs the sending of the non-period sounding reference signal according to the indication information, which may specifically include:
- the user equipment UE determines that the indication information is the indication information for transmitting the aperiodic sounding reference signal, the user equipment UE determines to send according to the indication information, and the pre-stored indication information and the third mapping relationship of the resource and the fourth mapping relationship.
- the third mapping relationship is a plurality of sets of resources and aperiodic configured by the base station Corresponding relationship between the states of the SRS-requested bits (similar to Table 11 of Example 6); wherein each of the plurality of sets of resources includes a part of resources used for transmitting the aperiodic sounding reference signal;
- the fourth mapping relationship is a correspondence between a resource required to transmit the aperiodic sounding reference signal and a state of a bit of the NDI except for part of the resource information used by the base station to transmit the aperiodic sounding reference signal ( Similar to Table 6 of Example 6).
- Table 3 For receiving the DCI format 0 (corresponding to the first instance of the second embodiment), for example, as shown in Table 3, when the indication information received by the user equipment UE is ' ⁇ '
- Example 3 For receiving DCI format 0 (corresponding to instance 3 of Embodiment 2), in order to further reduce the high-level signaling overhead, resources can also be dynamically configured, as shown in Table 6-8.
- the user equipment UE side pre-stores part of the resource information of the base station transmitting the aperiodic sounding reference signal SRS configured by the upper layer, as shown in Table 5, and also stores resources and indication information other than the part of the resource information.
- the mapping table as shown in Table 6 to Table 8.
- the part of the resource information is a subset of the resource information used to send the aperiodic sounding reference signal SRS.
- the user equipment UE can know that the aperiodic sounding reference signal SRS is not transmitted, and the component carrier CC is not used;
- the user equipment UE can use the partial resources of the high layer configuration and the resources indicated by the
- Tables 6 to 8 are only the case of the embodiment of the present invention, but are not limited thereto, and other information may be dynamically configured, which may be determined according to actual conditions. In this way, by adopting the dynamic configuration resource, the high-level signaling overhead can be reduced, and the aperiodic sounding reference signal SRS can be more flexibly transmitted, and the collision probability between the user equipment UEs can be reduced.
- the above embodiment is described by taking as an example a case where a part of the resources configured by the base station includes the sounding reference signal SRS and the non-period sounding reference signal SRS.
- Example 4 For receiving the DCI format 0 (corresponding to the fourth instance of the second embodiment), in order to further reduce the signaling overhead, the part of the resources configured by the base station may not include the shared resources, and the shared resources are pre-stored. It is used by the user equipment UE on the base station side and the user equipment side.
- Tables 9 and 8 are taken as an example for explanation.
- the sounding reference signal SRS where "L, M, N" can be configured by higher layer signaling RRC.
- the user equipment UE can transmit the aperiodic sounding reference signal SRS by using some resources of the high layer configuration (such as Table 9), resources indicated by the indication information ' ⁇ ', and pre-stored shares.
- DCI format 0 As an example.
- DCI format 4 is similar to the above, and the following briefly describes the example.
- Example 5 For receiving DCI format 4 (corresponding to example 5 of embodiment 2)
- the bit carrying the indication information is 1 bit of the NDI, and 2 bits of the A-SRS request.
- the user equipment UE may send the aperiodic sounding reference signal SRS by using the pre-configured resources (such as Table 10) according to the indication information lookup table 10.
- the above is an example of a resource used by a base station to transmit an aperiodic sounding reference signal SRS through a high layer configuration.
- Example 6 For receiving DCI format 4 (corresponding to Example 6 of Embodiment 2)
- the bit carrying the indication information is 1 bit of the NDI, and 2 bits of the A-SRS request.
- the base station configures the resources of Table 11 and Table 12, if the user equipment UE receives the DCI and reads the indication information from it, if the 1 bit of the NDI corresponds to "0", the 2 bits of the A-SRS request correspond to "11". Then, the user equipment UE can determine that the resource used is "#1 CC" and the other resources are resources corresponding to "11" in Table 11.
- processing of the shared resource is similar to that of the second embodiment, and is not described here.
- Example 7 For receiving DCI format 4 (corresponding to Example 7 of Embodiment 2), the bits carrying the indication information are 1 bit of NDI, and 2 bits of the A-SRS request. Among them, “Z” corresponds to 1 bit of NDI; “XY” corresponds to 2 bits of A-SRS request.
- the base station configures a group of resources for transmitting resources required for the aperiodic SRS, and other resources are dynamically configured by the base station.
- the base station configures the resources of Table 13 and Table 14, if the user equipment UE receives the DCI and reads the indication information from it, if the 1 bit of the NDI corresponds to "0", the 2 bits of the A-SRS request correspond to "11". , constituting "011", the user equipment UE can determine according to the table 14 that the resource used is the number of antennas is 2, the CC index is "C1&C2", and the other resources are the resources in Table 13.
- Example 8 For receiving DCI format 4
- the bits carrying the indication information are 2 bits of the NDI, and 2 bits of the A-SRS request. Similar to Examples 1 and 2, and Example 5.
- the bits carrying the indication information are 2 bits of the NDI, and 2 bits of the A-SRS request. It is expressed as "WZXY" in the order of NDI to A-SRS. Among them, “WZ” corresponds to 2 bits of NDI; “XY” corresponds to 2 bits of A-SRS request.
- the base station configures the resources of FIG. 15 and FIG. 16
- the user equipment UE is notified, and the resource information of the foregoing configuration is stored on the user side.
- the indication information therein is read, and the order of reading may be preset, for example, according to the order of “WZXY”, and then the configured resources are found according to Table 15 and Table 16, and Use this resource to send aperiodic SRS.
- the table 16 can be looked up.
- the transmission comb is #1.
- the cyclic displacement is C4;
- the user equipment UE transmits the aperiodic SRS using the found resources and the resources of the table 15.
- the NDI bit and the A-SRS request bit in the DCI format O or 4 are used to trigger the transmission of the aperiodic sounding reference signal and indicate the transmission of the aperiod with reference to FIG. 3 and FIG.
- a method for transmitting a non-periodic sounding reference signal according to an embodiment of the present invention will be described by taking a resource used for sounding a reference signal as an example.
- FIG. 3 is a flowchart of a method for transmitting a base station side sounding reference signal according to Embodiment 4 of the present invention. As shown in Figure 3, the method includes:
- Step 301 The base station constructs corresponding DCI source bits according to different functions
- the corresponding DCI source bit may be generated according to the transmission mode and the system requirement.
- the process of generating the DCI source bit is similar to the prior art, and is not described here.
- the indication information is carried by using the NDI bit and the A-SRS request bit in the DCI, and the indication information is as described in Embodiments 1 and 2, and details are not described herein again.
- Step 302 The base station adds a cyclic redundancy check code to the generated DCI source bit (Cyclic) Redundancy Check, CRC).
- Step 303 Perform modulation coding and rate matching on the CRC-added DCI source bits.
- Step 304 forming a physical control channel (Physical Downlink Control Channel,
- PDCCH Physical Time-frequency resource
- FIG. 4 is a flow chart showing a method for transmitting a user equipment side sounding reference signal according to Embodiment 4 of the present invention. As shown in Figure 4, the method includes:
- the user equipment UE detects a possible DCI according to the transmission mode, and then determines whether to send the aperiodic SRS according to the detected DCI, which specifically includes:
- Step 401 A user receives a PDCCH on a corresponding time-frequency resource.
- Step 402 Perform rate de-matching, demodulation and decoding.
- Step 403 Determine whether the CRC check is correct or incorrect; if the judgment result is correct, execute step 404, otherwise perform step 407.
- Step 404 in step 403, the result of the determination is that the CRC check is correct, and then further determines whether to send a non-periodic SRS; if the result of the determination is sent, then step 405 is performed, otherwise step 409 is performed;
- the status of the indication information may be used to determine whether to send an aperiodic SRS.
- the specific situation is as described in Embodiments 2 and 3, and details are not described herein.
- the user equipment UE may send the non-period SRS at a predetermined time.
- the user equipment UE receives the DCI including the trigger information in the nth subframe, the user transmits the aperiodic SRS in the first subframe that satisfies the period and the offset condition after at least four subframes.
- Step 405 In step 404, if the result of the determination is that the aperiodic SRS is sent, the user equipment may determine the used resource according to the indication information.
- the determination of the indication information and the resources are as described in Embodiments 1 and 2, and are not described herein again.
- Step 406 The user equipment UE sends the aperiodic time at a predetermined time by using the determined resource.
- the corresponding PDSCH can also be received.
- Step 407 in step 403, if the CRC check is incorrect, then it is determined whether it is super If the result of the maximum blind detection is over, if the result is YES, then step 408 is performed; otherwise, return to step 401.
- Step 408 In step 407, if the determination result is yes, the PDCCH is discarded, and the process ends.
- Step 409 In step 404, if the result of the determination is that the aperiodic SRS is not sent, the user equipment UE does not send the aperiodic SRS.
- the base station requests by using downlink control information for uplink transmission, such as a bit of a new data indicator (NDI: New Data Indicator) in DCI format 0 or DCI format 4, and an aperiodic sounding reference signal (
- NDI New Data Indicator
- the bit of the A-SRS Request is sent to send the indication information, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS according to the indication information, so that the unused bits in the DCI format 0 or the DCI format 4 can be effectively utilized.
- resources can be added to reduce the collision of the aperiodic sounding reference signal SRS.
- the embodiment of the invention further provides a base station and a user equipment, as described in the following embodiments.
- the method for solving the problem is similar to the method for transmitting the non-period sounding reference signal based on the base station and the user equipment. Therefore, the implementation of the base station and the user equipment can refer to the implementation of the method, and the repeated description is omitted.
- FIG. 5 is a block diagram showing the structure of a base station according to Embodiment 5 of the present invention.
- the base station includes: an information generating unit 501 and an information sending unit 502;
- the information generating unit 501 is configured to generate downlink control information DCI for uplink transmission, where the downlink control information includes: indicating whether the user equipment sends the aperiodic sounding reference signal, and the resource used when transmitting the aperiodic sounding reference signal Indicating information; and using the bits of the new data indicator in the downlink control information and the bits requested by the aperiodic sounding reference signal to carry the indication information;
- the information sending unit 502 is configured to send downlink control information to the user equipment, so that the user equipment performs the sending of the aperiodic sounding reference signal according to the indication information included in the downlink control information.
- the downlink control information may be DCI format 0 or DCI format 4.
- the information generating unit 501 can adopt the method shown in FIG. 3, and details are not described herein again.
- the base station requests by using downlink control information for uplink transmission, such as a bit of a new data indicator (NDI: New Data Indicator) in DCI format 0 or DCI format 4, and an aperiodic sounding reference signal (
- NDI New Data Indicator
- the bit of the A-SRS Request is sent to send the indication information, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS according to the indication information, so that the unused bits in the DCI format 0 or the DCI format 4 can be effectively utilized.
- resources can be added to reduce the collision of the aperiodic sounding reference signal SRS.
- FIG. 6 is a block diagram showing the structure of a base station according to Embodiment 6 of the present invention.
- the base station includes: an information generating unit 601 and an information sending unit 602, which are similar to the embodiment 5, and are not described herein again.
- the base station may further include a first resource configuration unit 603 and a first mapping relationship storage unit 604;
- a first resource configuration unit 603, configured to configure multiple groups of resources, each of the plurality of groups of resources includes resource information used to send the aperiodic sounding reference signal;
- the first mapping relationship storage unit 604 is configured to store the configured plurality of groups of resources corresponding to the corresponding indication information
- the resource indicated by the user equipment in the indication information is one of a plurality of pre-configured resources.
- the base station can use the high-level signaling, such as RRC, to configure the resource information used for sending the aperiodic sounding reference signal, and store the resource corresponding to the indication information, as shown in Table 3 and Table 10.
- RRC high-level signaling
- the resource information used by the aperiodic sounding reference signal included in each of the plurality of groups of resources configured by the first resource configuration unit 603 may be a sounding reference configured by the base station. All resource information of the signal may also be a subset of the total resource information. As described in Embodiments 1-3, details are not described herein again.
- FIG. 7 is a schematic structural diagram of a base station according to Embodiment 7 of the present invention.
- the base station includes: an information generating unit 701 and an information sending unit 702, which function similarly to Embodiment 5, I will not repeat them here.
- the base station further includes: a second resource configuration unit 703, a storage unit 704, and a third resource configuration unit 705;
- a second resource configuration unit 703, configured to configure a part of resource information in a resource used for sending the aperiodic sounding reference signal
- the storage unit 704 is configured to store part of the resource information configured by the second resource configuration unit.
- the third resource configuration unit 705 is configured to configure multiple groups of resources required to send the aperiodic sounding reference signal except part of the resource information.
- the second mapping relationship storage unit 706 is configured to store the configured resources of the plurality of sets of resource information in addition to the part of the resource information, corresponding to the corresponding indication information, and the corresponding indication information; and, instructing the user equipment to send the non-
- the resource indicated by the user equipment in the indication information is a resource required to send the aperiodic sounding reference signal except part of the resource information.
- the partial resources configured by the second resource configuration unit 703 are a subset of the resource information used to transmit the non-periodic sounding reference signals. Specifically, as described in Embodiments 1 to 3, details are not described herein again.
- the base station does not allocate resources shared with the SRS of the transmission period, or allocates partial resource information of the aperiodic sounding reference signal only through high-layer signaling configuration, and other resource information is indicated by the indication information.
- the dynamic allocation can be determined from the resources shown in Table 6 to Table 8, Table 14, and Table 16 according to the indication information.
- FIG. 8 is a block diagram showing the structure of a base station according to Embodiment 8 of the present invention.
- the base station includes: an information generating unit 801 and an information sending unit 802, which are similar to the embodiment 5, and are not described herein again.
- the base station further includes: a fourth resource configuration unit 803, a third mapping relationship storage unit 804, a fifth resource configuration unit 805, and a fourth mapping relationship storage unit 806;
- a fourth resource configuration unit 803, configured to configure a plurality of groups of resources that are one less than a status of the request bits of the aperiodic SRS;
- the third mapping relationship storage unit 804 is configured to store the configured multiple sets of resources in association with the states of the bits of the aperiodic sounding reference signal request; each of the multiple sets of resources includes sending a non-periodic sounding reference. Part of the resource information in the resource information used by the signal; a fifth resource configuration unit 805, configured to configure, by the same number of states as the number of bits of the new data indicator, a plurality of groups of resources required to send the aperiodic sounding reference signal except the part of the resource information;
- a fourth mapping relationship storage unit 806, configured to store the configured plurality of groups of resources corresponding to the status of the bits of the new data indicator
- the resource indicated by the user equipment in the indication information includes a resource corresponding to a state of a bit of the new data indicator, and a bit of a non-period sounding reference signal request The resource corresponding to the state.
- the resource information used for transmitting the aperiodic sounding reference signal may also be a subset of the resource information of the sounding reference signal of the transmission period configured by the base station.
- the third resource configuration unit configures a plurality of sets of resources required for transmitting the aperiodic SRS except the partial resource information
- the bit of the new data indicator is 1 bit
- the new data indication The state of the bit of the device and the state of the bit requested by the aperiodic sounding reference signal are respectively used to indicate different resource information
- the bit of the new data indicator is 2 bits
- the state of 1 bit of the new data indicator is used to indicate a resource
- another bit of the indicator of the new data is used to indicate another resource.
- the base station may further include an information notification unit (not shown), and the information notification unit is configured to notify the user of the mapping relationship between the resources configured by the first second, third, fourth, and fifth resource configuration units and the indication information.
- the device UE is configured to enable the user equipment UE to determine, according to the indication information and the mapping relationship, resources used for transmitting the aperiodic SRS.
- the base station requests by using downlink control information for uplink transmission, such as a bit of a new data indicator (NDI: New Data Indicator) in DCI format 0 or DCI format 4, and an aperiodic sounding reference signal (
- the bit of the A-SRS Request is sent to send the indication information, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS according to the indication information, so that the unused bits in the DCI format 0 or the DCI format 4 can be effectively utilized.
- resources can be added to reduce the collision of the aperiodic sounding reference signal SRS.
- FIG. 9 is a schematic structural diagram of a user equipment according to Embodiment 9 of the present invention. As shown in FIG. 9, the user equipment UE includes: an information receiving unit 901 and an information processing unit 902;
- the information receiving unit 901 is configured to receive downlink control information that is sent by the base station for uplink transmission, where the downlink control information includes: indicating whether the user equipment sends an aperiodic sounding reference signal, and when transmitting the aperiodic sounding reference signal, The indication information of the used resource; and the base station uses the bit of the new data indicator in the downlink control information and the bit requested by the aperiodic sounding reference signal to carry the indication information;
- the information processing unit 902 is configured to perform transmission of the aperiodic sounding reference signal according to the indication information received by the information receiving unit 901.
- the downlink control information may be DCI format 0 or DCI format 4.
- the information receiving unit 901 and the information processing unit 902 can adopt the method shown in FIG. 4, and details are not described herein again.
- the base station requests by using downlink control information for uplink transmission, such as a bit of a new data indicator (NDI: New Data Indicator) in DCI format 0 or DCI format 4, and an aperiodic sounding reference signal (
- NDI New Data Indicator
- the bit of the A-SRS Request sends the indication information, so that the user equipment UE performs the transmission of the aperiodic sounding reference signal SRS according to the indication information, so that the unused bits in the DCI format 0 or the DCI format 4 can be effectively utilized. It also increases the resources available for selection, reducing the collision of the aperiodic sounding reference signal SRS.
- FIG. 10 is a block diagram showing the configuration of an information processing unit in Embodiment 9 of the present invention.
- the information processing unit 902 includes:
- the first determining unit 1001 is configured to determine whether the indication information is indication information for transmitting a non-periodic sounding reference signal
- the first resource determining unit 1002 is configured to determine, according to the indication information, and the first mapping relationship between the pre-stored indication information and the resource, to send the aperiodic when the indication information is the indication information of the non-period sounding reference signal.
- the first signal sending unit 1003 is configured to utilize the resource determined by the first resource determining unit 1002.
- the source transmits the aperiodic sounding reference signal; or transmits the aperiodic sounding reference signal by using the resource determined by the first resource determining unit 1002 and the pre-stored resource.
- the information processing unit 802 may further include a first storage unit 1004, configured to store a first mapping relationship between the indication information and the resource.
- the first signal sending unit 1003 is configured to send the aperiodic sounding reference signal by using the resource determined by the first resource determining unit 1002, if the base station is configured with all the resource information used for sending the aperiodic SRS. If the base station configures a subset of all the resource information used for transmitting the aperiodic SRS, that is, the shared resource is not configured, the first signal sending unit 1003 transmits the resource determined by the first resource determining unit 1002 and the pre-stored resource.
- the aperiodic detection reference signal is as described in Embodiment 1-3, and details are not described herein.
- FIG. 11 is a block diagram showing the configuration of an information processing unit in Embodiment 9 of the present invention.
- the information processing unit 902 includes:
- a second determining unit 1101 configured to determine whether the indication information is indication information for transmitting a non-periodic detection reference signal
- the second resource determining unit 1102 is configured to: when the indication information is the indication information that sends the aperiodic sounding reference signal, determine, according to the indication information, and the pre-stored indication information and the second mapping relationship of the resources, to send the aperiodic detection. a resource used by the reference signal; wherein the second mapping relationship is required for transmitting the aperiodic sounding reference signal except for part of resource information used by the base station to transmit the aperiodic sounding reference signal Correspondence between resources and indication information;
- the second signal sending unit 1103 is configured to send the aperiodic sounding reference signal by using the pre-configured resource and the resource determined by the second resource determining unit 1102.
- the information processing unit 902 may further include a second storage unit 1104, configured to store a second mapping relationship between the indication information and the resource, and further include a third storage unit 1105, configured to store the base station configured by the high layer signaling. Part of the resources.
- the second signal sending unit 1103. The method is used to send an aperiodic sounding reference signal by using a pre-stored resource (a group of resources pre-configured by a base station) and a resource determined by the second resource determining unit 1102.
- the second signal sending unit 1103 is configured to use the pre-stored resource (a group of resources configured by the pre-stored base station and the pre-stored shared resource), and the second resource. Determining the resources determined by the unit 1102 to send the aperiodic sounding reference signals is as described in Embodiment 1-3, and details are not described herein again.
- FIG. 12 is a block diagram showing the configuration of an information processing unit in Embodiment 9 of the present invention. As shown in FIG. 12, the information processing unit 902 includes:
- the third determining unit 1201 is configured to determine whether the indication information is indication information for transmitting an aperiodic sounding reference signal
- the third resource determining unit 1202 is configured to determine, according to the indication information, the third mapping relationship and the fourth mapping relationship of the pre-stored indication information and the resource, when determining that the indication information is the indication information of the non-period sounding reference signal.
- the third mapping relationship is a correspondence between a group of resources configured by the base station and a status of a bit of the aperiodic sounding reference signal request, where each group of the plurality of resources includes sending the aperiodic Detecting a part of the resources used by the reference signal; the fourth mapping relationship is to send the aperiodic sounding reference signal except for part of the resource information used by the base station to transmit the aperiodic sounding reference signal. Correspondence between the required resources and the state of the bits of the new data indicator;
- the third signal sending unit 1203 is configured to send the aperiodic sounding reference signal by using the determined resource.
- the information processing unit 902 may further include a fourth storage unit 1204 for storing third and fourth mapping relationships of the indication information and the resources.
- the base station requests by using downlink control information for uplink transmission, such as a bit of a new data indicator (NDI: New Data Indicator) in DCI format 0 or DCI format 4, and an aperiodic sounding reference signal ( The bit of the A-SRS Request) is used to send the indication information, and when the user equipment UE is caused to perform the transmission of the aperiodic sounding reference signal SRS according to the indication information, the unused bits in the DCI format 0 or the DCI format 4 can be effectively utilized.
- resources can be added to reduce the collision of the aperiodic sounding reference signal SRS.
- a computer readable program is also provided in the embodiment, wherein when the process is performed in the base station In the sequence, the program causes the computer to execute the transmission method of the sounding reference signal as described in Embodiments 1 and 2 in the base station.
- the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the transmission method of the sounding reference signal as described in Embodiments 1 and 2 in the base station.
- Also provided in the embodiment is a computer readable program, wherein when the program is executed in the user device, the program causes the computer to execute the method of transmitting the sounding reference signal as described in Embodiment 3 in the user equipment.
- the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the method for transmitting the sounding reference signal as described in Embodiment 3 in the user equipment.
- the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
- the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or a step.
- the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
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EP11854879.1A EP2663152A1 (en) | 2011-01-07 | 2011-01-07 | Method for sending sounding reference symbol, e-nodeb and user equipment |
CN2011800641908A CN103314631A (zh) | 2011-01-07 | 2011-01-07 | 探测参考信号的发送方法、基站和用户设备 |
JP2013547793A JP2014505414A (ja) | 2011-01-07 | 2011-01-07 | サウンディングリファレンス信号を送信する方法、基地局及びユーザ装置 |
KR1020137020836A KR101486181B1 (ko) | 2011-01-07 | 2011-01-07 | 사운딩 레퍼런스 심벌을 전송하는 방법, 기지국, 및 사용자 기기 |
US13/936,703 US20130294381A1 (en) | 2011-01-07 | 2013-07-08 | Method for Transmitting Sounding Reference Symbol, Base Station and User Equipment |
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Also Published As
Publication number | Publication date |
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CN103314631A (zh) | 2013-09-18 |
US20130294381A1 (en) | 2013-11-07 |
EP2663152A1 (en) | 2013-11-13 |
JP2014505414A (ja) | 2014-02-27 |
KR20130121151A (ko) | 2013-11-05 |
KR101486181B1 (ko) | 2015-01-23 |
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