CN110620747A - User equipment and method for determining data channel starting subframe - Google Patents
User equipment and method for determining data channel starting subframe Download PDFInfo
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- CN110620747A CN110620747A CN201910936329.1A CN201910936329A CN110620747A CN 110620747 A CN110620747 A CN 110620747A CN 201910936329 A CN201910936329 A CN 201910936329A CN 110620747 A CN110620747 A CN 110620747A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a device and a method for determining a data channel starting subframe. In one novel aspect, a UE monitors one or more candidate control channels, wherein at least one candidate control channel occupies a plurality of subframes, the UE detects a control channel for the UE, decodes the control channel and determines a data channel starting subframe based on the control channel and a known interval. In another novel aspect, the UE also decodes the subframe indicator from the decoded control channel. The subframe indicator indicates the number of subframes from a data channel start subframe to a control channel start subframe, the number of subframes of a control channel, or a data channel start subframe. In another embodiment, a predefined rule is used for the subframe indicator to determine the data channel start subframe.
Description
Technical Field
The embodiment of the invention relates to a wireless communication system, in particular to user equipment and a method for determining a data channel starting subframe.
Background
Third Generation Partnership Project (3 GPP) and Long Term Evolution (LTE) mobile communication systems provide high data rates, lower latency and improved system performance. However, these systems are optimized for conventional data communication. Repeated retransmissions are generally not required. Therefore, the starting subframe of the uplink or downlink data channel is well defined in the existing mobile network system.
As applications in mobile networks evolve, the above-mentioned assumption of the data channel start subframe may no longer be correct. For example, machine-to-machine (M2M) applications require low cost devices and improved coverage (coverage), unlike current cellular communication systems. For example, some smart meter devices that are typically installed in basements of residential buildings or locations that are sheltered from foil-lined insulators, metallized windows, or traditional thick-walled buildings experience significantly greater path losses (e.g., 20dB of path loss) than ordinary devices under typical operating conditions. To serve these devices, the 3gpp ran1 working group has studied coverage promotion and cost reduction for these Machine Type Communication (MTC) devices in a coverage hole (coverage hole) scenario. Some potential solutions have been identified, such as repeating physical channels to improve coverage. In addition, cost reduction is being investigated, including reduction of data buffer size and operating bandwidth, reduction of the number of receive antennas, and so on. Since most of the physical channels are repeated, there may be misinterpretations between a Base Station (BS) and a Mobile Station (MS) at initial transmission times of some physical channels. Therefore, it is important to have a method of determining the starting subframe of the data channel. The benefits of determining the starting subframe are not limited to the above example.
There is a need for an improved and enhanced User Equipment (UE) for determining a data channel start subframe.
Disclosure of Invention
An apparatus and method for determining a data channel start subframe are provided. In one novel aspect, a UE monitors one or more candidate control channels, wherein at least one candidate control channel occupies radio resources in a plurality of subframes. The UE detects a control channel for the UE and decodes the control channel. In one embodiment, the UE determines a data channel start subframe based on a control channel and a known interval. The known interval may be an interval from a data channel start subframe to a start subframe of a control channel or an interval from a data channel start subframe to an end subframe of a control channel.
In another novel aspect, the UE further decodes the subframe indicator from the decoded control channel. In one embodiment, the subframe indicator indicates the number of subframes between the starting subframe of the data channel to the starting subframe of the decoded control channel. In another embodiment, the subframe indicator indicates the number of subframes between a start subframe of the data channel to an end subframe of the decoded control channel. In another embodiment, the subframe indicator represents a data channel start subframe. In yet another embodiment, a predefined rule is used for the subframe indicator before the value is used to determine the data channel start subframe.
Other embodiments and advantages are described in the detailed description that follows. This summary is not intended to be limiting of the invention. The invention is defined by the claims.
Drawings
The drawings illustrate embodiments of the invention, in which like numerals represent similar elements.
Fig. 1 shows an example mobile communication network in which a UE determines a data channel start subframe based on information in a control frame occupying a plurality of subframes according to an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a control channel and a data channel having a plurality of subframes according to an embodiment of the present invention.
Fig. 3 illustrates the determination of a data channel start subframe based on a known interval from the start of a control channel to the start of a data channel in accordance with an embodiment of the present invention.
Fig. 4 shows an example of determining a data channel start subframe based on a detected number of decoded control channel occupied subframes and a known interval, according to an embodiment of the present invention.
Fig. 5 shows an example of determining a starting subframe of a data channel based on a subframe indicator in a decoded control channel according to an embodiment of the present invention.
Fig. 6 shows some examples of subframe indicators according to embodiments of the invention.
Fig. 7 shows an example of determining a data channel start subframe with a subframe indicator and a known interval according to an embodiment of the present invention.
Fig. 8 is an example of a predefined rule for the number of subframes occupied by the subframe indicator and the control channel.
Fig. 9 shows a schematic diagram of applying a rule to a decoded subframe indicator to obtain a data channel start subframe.
Fig. 10 shows some examples of subframe indicators transmitted in control information according to embodiments of the present invention.
Fig. 11 is a schematic flow chart of a UE determining a data channel start subframe according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
Fig. 1 shows an example mobile communication network 100 in which a UE determines a data channel start subframe based on information in a control frame occupying a plurality of subframes, according to an embodiment of the present invention. It should be understood that a mobile communication network may also be referred to as a wireless communication network. The wireless communication system 100 includes one or more fixed infrastructure elements forming a network distributed over a geographic area. The base unit may also be referred to as an Access Point (AP), an Access Terminal (AT), a base station BS, a Node-B (Node-B), and an evolved NodeB (eNB), or other terminology used in the art. As shown in fig. 1, one or more base stations 101 and 102 serve several mobile stations MS or UEs 103 and 104 in a service area, e.g. within a cell or cell sector. In some systems, one or more BSs are communicatively coupled (core to) to a controller forming an access network, the controller being communicatively coupled to one or more core networks. The disclosed embodiments are not limited to any one particular wireless communication system. In this specification, MS and UE mean the same.
In the time and/or frequency domain, serving BSs 101 and 102 transmit Downlink (DL) communication signals 112 and 113 to MSs 103 and 104, respectively. MSs 103 and 104 communicate with one or more base units 101 and 102 via Uplink (UL) communication signals 111 and 114, respectively. In one embodiment, the mobile communication system 100 is an Orthogonal Frequency Division Multiplexing (OFDM)/Orthogonal Frequency Division Multiple Access (OFDMA) system including a plurality of BSs including an eNB 101 and an eNB102 and a plurality of MSs including an MS 103 and an MS 104. The eNB 101 communicates with the MS 103 via uplink communication signals 111 and downlink communication signals 112. When the eNB has a downlink packet to send to the MSs, each MS obtains a downlink allocation (resource), such as a set of radio resources in a Physical Downlink Shared Channel (PDSCH). When the user equipment needs to send a packet in the Uplink to the eNB, the MS obtains a grant from the eNB, wherein the grant allocates a Physical Uplink Shared Channel (PUSCH) containing a set of Uplink radio resources. The MS acquires Downlink or uplink scheduling information from a PDCCH (Physical Downlink Control Channel) or an Enhanced Physical Downlink Control Channel (EPDCCH) dedicated to the MS. Downlink or uplink scheduling Information and other Control Information carried by the PDCCH channel is called Downlink Control Information (DCI). Fig. 1 also shows different physical channels for the downlink communication signal 112 and the uplink communication signal 111 examples. The downlink communication signal 112 includes a PDCCH or EPDCCH 121, a PDSCH 122, a Physical Control Format Indicator Channel (PCFICH) 123, a Physical Multicast Channel (PMCH) 124, a Physical Broadcast Channel (PBCH) 125, and a Physical hybrid Automatic Repeat Request Indicator Channel (PHICH) 126. PDCCH/EPDCCH 121 transmits a downlink control signal to the MS. The DCI 120 is carried over the PDCCH/EPDCCH 121. PDSCH 122 transmits data information to the MS. PCFICH 123 transmits PDCCH information, such as a dynamic indication of the number of symbols used by PDCCH 121. PMCH 124 carries multicast information. The PBCH 125 carries a Master Information Block (MIB) for MS early discovery and cell-wide coverage (cell-wide coverage). The PHICH carries hybrid automatic repeat request, HARQ, information indicating whether the eNB correctly received the transmission signal on the PUSCH. The Uplink communication signal 111 includes a Physical Uplink Control Channel (PUCCH) 131, a PUSCH 132, and a Physical Random Access Channel (PRACH) 133 carrying Random Access information.
In current LTE systems, PDCCH and EPDCCH are transmitted in one subframe, and PDSCH is transmitted in the same subframe. For Frequency Division Duplex (FDD), PUSCH starts transmission after 4 subframes of PDCCH or EPDCCH are transmitted. For Time Division Duplex (TDD), different subframe intervals between PUSCH and PDCCH are defined for uplink-downlink configuration information in different 3GPP TS36.213, where PUSCH and PDCCH convey UL scheduling information, or correspondingly, PHICH. Multiple Transmission Time Intervals (TTIs) may be bundled for one PUSCH Transmission.
In one embodiment, the mobile communication network 100 uses OFDMA or a multi-carrier architecture, including Adaptive Modulation and Coding (AMC) on the downlink and next generation single carrier FDMA architecture for UL transmissions. FDMA-based single-carrier architectures include Interleaved FDMA (IFDMA), Localized FDMA (Localized FDMA), LFDMA, spread discrete fourier transform orthogonal frequency division multiplexing (DFT-spread OFDM) of IFDMA or LFDMA. In an OFDMA system, remote units are served by allocating downlink or uplink radio resources, typically comprising a set of subcarriers over one or more OFDM symbols. Exemplary OFDMA protocols include the LTE and IEEE 802.16 standards, which are evolutions of the 3GPP UMTS standard. The architecture may also include the use of transmission techniques such as multi-carrier CDMA (MC-CDMA), multi-carrier direct sequence Code Division multiple access (MC-DS-CDMA), Orthogonal Frequency Code Division Multiplexing (OFCDM) for one or two dimensional transmissions. Or may be based on simpler time and/or frequency division multiplexing/multiple access techniques, or a combination of these different techniques. In an alternative embodiment, the communication system may use other cellular communication system protocols including, but not limited to, TDMA or direct sequence CDMA.
For covered null devices, the PDCCH or EPDCCH may need to be repeated across multiple subframes. Meanwhile, the PDSCH and/or PUSCH of the device may also be transmitted, retransmitted, and repeated across subframes. The number of repetitions, i.e., the number of subframes occupied by the data channel or the control channel, may be the same or different. Therefore, a method of determining a data channel reception or transmission start subframe is necessary.
In one disclosed embodiment, the method for determining the data channel start subframe by the MS comprises the following steps: monitoring one or more candidate control channels, wherein at least one candidate control channel occupies radio resources in a plurality of subframes, or each candidate control channel occupies radio resources in a plurality of subframes; decoding a control channel for the MS; a data channel start subframe is determined based on the decoded control channel. In one example, the data channel is a downlink data channel (e.g., PDSCH in LTE systems). In another example, the data channel is an uplink data channel (e.g., PUSCH in an LTE system). The control channel is PDCCH or EPDCCH in an LTE system. Alternatively, the control channel may be a physical channel (e.g., PHICH in LTE system) for transmitting the hybrid automatic repeat request indication.
In one embodiment, determining the data channel start subframe based on the decoded control channel further comprises: the data channel start subframe is determined based on a start subframe of the decoded control channel and a known interval from the data channel start subframe to the start subframe of the decoded control channel. In one example, the interval is predefined. Alternatively, the interval is configured through a higher layer message (e.g., Radio Resource Control (RRC) signaling in an LTE system). Since the interval is known to the MS, when monitoring a set of candidate control channels, the MS knows the data channel start subframe corresponding to each candidate control channel. In one embodiment, the interval is large enough to ensure that the data channel start subframe always follows the decoded control channel end subframe, especially for uplink data channel transmissions. The MS may acquire a resource allocation (or uplink grant) for the data channel in each decoded control channel subframe. The MS may receive or buffer only the data channel resources indicated by the decoded control channel. In another embodiment, the MS may not be aware of the resource allocation of the data channel. For example, the data channel start subframe precedes the end subframe of the decoded control channel, or the MS cannot timely decode the control channel for the MS to transmit the data channel resource allocation. The MS needs to buffer all potential data channel resources starting from the data channel start subframe. The potential data channel resources may be all resources of one subframe. Alternatively, the potential data channel resources are a subset of the total resources and the subset is known to the MS. The subset may be predefined or configured via higher layer messages.
It should be noted that the MS can calculate and know the interval from the data channel start time to the decoded control channel start time, in combination with the number of subframes occupied by the decoded control channel and the interval from the data channel start time to the decoded control channel end time. However, the number of subframes occupied by the decoded control channel may not be known to the MS. The MS needs to detect the number of subframes occupied by the decoded control channel.
The number of multiple subframes occupied by each candidate control channel may be unknown to the MS before one or more candidate control channels (i.e., decoded control channels for the MS) are successfully decoded. The MS needs to detect the number of subframes occupied by the decoded control channel. In another embodiment, determining a data channel start subframe from a decoded control channel further comprises: detecting the number of subframes occupied by the decoded control channel; determining the data channel start subframe based on a detected number of decoded control channel occupied subframes and a known interval from a data channel start subframe to an end subframe of a decoded control channel. In one example, the interval is predefined. Alternatively, the interval is configured by higher layer messages (e.g., RRC signaling in LTE systems). An interval equal to zero is a special case, indicating that the data channel starts at the end subframe of the decoded control channel. The interval may also be less than zero, indicating that the data channel begins before the ending subframe of the decoded control channel. In this case, the MS needs to buffer all potential data channel resources from the data channel start subframe. When the interval is greater than zero, the data channel begins after the ending subframe of the decoded control channel. For uplink data channel transmission, the interval is always greater than zero.
The MS may detect the number of subframes occupied by the decoded control channel. However, there may be more subframes in which the control channel is transmitted than the MS detects. For example, the control channel may be repeated in multiple subframes in a manner that repeats the same content. Thus, the MS can early decode (early decode) the control channel. In this case, there may be a misinterpretation between the MS and the BS of the number of subframes occupied by the decoded control channel. Therefore, the number of subframes occupied by the decoded control channel needs to be predefined or configured. In one embodiment, the number of subframes occupied by the control channel is configured by higher layer messages. In another embodiment, the number of occupied subframes is indicated by the decoded control channel.
In one embodiment, determining the data channel start subframe from the decoded control channel further comprises: acquiring a subframe indicator in a decoded control channel; based on the subframe indicator, a data channel start subframe is determined. In one embodiment, the subframe indicator indicates the number of subframes from the data channel starting subframe to the starting subframe of the decoded control channel. In another embodiment, the subframe indicator represents the number of subframes from the data channel start subframe to the decoded control channel end subframe. In another embodiment, the subframe indicator represents a subframe index representing the start of the data channel. The subframe index may include at least one period index. For example, the subframe index may include a radio frame index and a subframe index within one radio frame. It may also be a period index, such as a subframe index within a fixed period. In another embodiment, the subframe index may be a subframe interval to a reference subframe, which is known to both the MS and the BS.
In another embodiment, determining a data channel start subframe from a decoded control channel further comprises: acquiring a subframe indicator in a decoded control channel; a data channel start subframe is determined based on the subframe indicator and an interval from the data channel start subframe to an end subframe of the decoded control channel. The interval may be predefined or configured by higher layer messages. The subframe indicator may indicate the number of subframes occupied by the control channel containing the subframe indicator.
In another embodiment, determining the data channel start subframe from the decoded control channel further comprises: acquiring a subframe indicator in a decoded control channel; a data channel start subframe is determined based on the subframe indicator and a predefined rule. In one embodiment, the predefined rule is further based on the MS index. For example, the MS index may be a group index shared with at least another MS configured by the base station. In another embodiment, the MS index is an MS identity ID or a BS-configured Radio Network Temporary Identity (RNTI). In another embodiment, the predefined rule is further based on a BS ID. The BS ID may be a physical ID or a virtual ID.
The MS may acquire the subframe indicator after the control channel has been decoded. If the MS knows that the data channel start subframe is always after (e.g., predefined) the end subframe of the control channel for the MS, the MS may only receive or buffer the data channel resources indicated by the decoded control channel. In another example, the data channel start subframe may not always be after the end subframe of the control channel, which may occur when the downlink data channel is received. In this case, the MS needs to buffer all potential data channel resources from the data channel start subframe.
In addition, the data channel may also occupy one or more subframes, if needed repeated across multiple subframes. The MS needs to know the number of subframes occupied by the data channel (or the number of data channel repetitions) before decoding or transmission. In one embodiment, the number of subframes occupied by the data channel may be configured by higher layer messages. In another embodiment, the number of subframes occupied by the data channel may be indicated in the decoded control channel. Alternatively, the number of subframes occupied by the decoded control channel may be implied by the number of subframes occupied by the data channel, e.g. the same as the number of subframes occupied by the decoded control channel.
Fig. 1 also shows a simplified block diagram of a BS 101 corresponding to the present invention. The BS 101 includes an antenna 161 for transmitting and receiving wireless signals. A Radio Frequency (RF) transceiver module 162 is coupled to the antenna 161, receives RF signals from the antenna 161, converts the RF signals to baseband signals, and transmits them to the processor 163. The RF transceiver 162 also converts baseband signals received from the processor 163 into RF signals, and transmits them to the antenna 161. Processor 163 processes the received baseband signals and invokes different functional blocks to perform the functions of BS 101. Memory 164 stores program instructions and data 165 to control the operation of BS 101.
BS 101 also includes a subframe processor 166 according to an embodiment of the present invention. Subframe processor 166 may be implemented in software, hardware, or any combination thereof. In one example, the subframe processor 166 configures a set of radio resources for the control channel; the control channel is decoded by the control unit via the processor 163. In one embodiment, subframe processor 166 inserts indicators in each control channel through the control module via processor 163. The data channel is modulated and decoded via a data channel module. BS 101 transmits the decoded control channels and data channels via antenna 161 with RF transceiver 162.
Fig. 1 also shows a simplified block diagram of an MS 103 corresponding to the present invention. MS 103 includes an antenna 141 for transmitting and receiving wireless signals. The RF transceiver module 142 is coupled to the antenna, receives RF signals from the antenna 141, converts the RF signals to baseband signals, and transmits them to the processor 143. The RF transceiver 142 also converts baseband signals received from the processor 143 into RF signals, and transmits them to the antenna 141. Processor 143 processes the received baseband signals to invoke various functional blocks to perform the functions of MS 103. The memory 144 stores program instructions and data 145 to control the operation of the MS 103.
MS 103 includes a module 146 for performing various tasks according to embodiments of the present invention. The control channel monitor 151 monitors one or more candidate control channels and determines a control channel for the MS 103. The control channel decoder 152 decodes the control channel for the MS 103. The data channel processor 153 determines a data channel start subframe for the MS based on the decoded control channel. The subframe processor 154 obtains a subframe indicator from the decoded control channel and passes the subframe indicator to the data channel processor 153 to determine a data channel start subframe. The interval processor 155 acquires a known interval and delivers the known interval to the data channel processor 153 to determine the data channel start subframe. Rule processor 156 determines a data channel start subframe for MS 103 using a predefined rule for the subframe indicator.
Fig. 2 shows a schematic diagram of a control channel and a data channel having a plurality of subframes according to an embodiment of the present invention. The UE monitors a set of candidate control channels, such as candidate channels 211 and 212. Each candidate control channel occupies radio resources in a different subframe. For example, control channel 211 occupies radio resources 213 and 214 in subframes 201 and 202, respectively. The control channel 212 occupies radio resources 215, 216 and 217 in subframes 201, 202 and 203, respectively. The UE blindly detects a control channel for the UE. For example, the UE may detect the candidate control channels 211 and 212, but decode only the control channel 211. The UE determines the starting subframe of the data channel 231 from the decoded control channel 211. Similar to the control channel, the data channel may occupy radio resources in one or more subframes. For example, data channel 231 occupies radio resources 233 and 234, both in subframe 202. In yet another embodiment, the data channel 232 occupies radio resources 235, 236, 237 and 238. Radio resources 235 and 236 are in subframe 203 and radio resources 237 and 238 are in subframe 204. In one embodiment, data channels 231 and 232 are uplink data channels. In one embodiment, the control channel 211 or 212 is a PHICH. In another embodiment, the control channel 211 or 212 is PDCCH or EPDCCH.
Fig. 3 is a diagram illustrating the determination of a data channel start subframe based on a known interval from a control channel start to a data channel start in accordance with an embodiment of the present invention. Control channel 321 occupies subframes 301, 302, 303, and 304, with a starting subframe 311 in subframe 301 and an ending subframe 315 in subframe 304. The UE determines the data channel start subframe with a known interval between the start subframe 311 of the control channel to the data channel start subframe of the UE. As shown in fig. 3, each of the three example data channels 322, 323, and 324 occupy one or more subframes, with starting subframes 312, 313, and 314, respectively. To determine the starting subframe of the data channel 322, the UE acquires an interval 332, which interval 332 is the number of subframes between the starting subframe 311 of the control channel 321 and the starting subframe 312 of the data channel 322. Upon successful decoding of the control channel 321, the UE may determine the starting subframe 312 of the data channel 322 based on the interval 332. Similarly, to determine the starting subframe of the data channel 323, the UE acquires an interval 333, which interval 333 is the number of subframes between the starting subframe 311 of the control channel 321 and the starting subframe 313 of the data channel 323. Upon successful decoding of the control channel 321, the UE may determine the starting subframe 313 of the data channel 323 based on the interval 333. To determine the starting subframe of the data channel 324, the UE acquires an interval 334, which interval 334 is the number of subframes between the starting subframe 311 of the control channel 321 and the starting subframe 314 of the data channel 324. Upon successful decoding of the control channel 321, the UE may determine the starting subframe 314 of the data channel 324 based on the interval 334.
The interval from the start subframe of the control channel to the start subframe of the data channel may be positive, negative, or zero. As shown in fig. 3, interval 334 is five subframes. The interval 334 is large enough to ensure that the starting subframe 314 of the data channel 324 follows the ending subframe 315 of the decoded control channel 321. The MS may obtain a resource allocation (or uplink grant) for the data channel 324 in each subframe 306-309 of the decoded control channel 321 transmission. The MS may receive or buffer only the data channel resources indicated by the decoded control channel 321. In another embodiment, the data channel start subframe (e.g., 312 or 313) precedes the end subframe 315 of the decoded control channel 321 or at the end subframe 315. In another embodiment, the MS cannot timely decode the decoded control channel 321 of the resource allocation of the transmission data channel 324 (e.g., cannot decode the control channel 321 at the beginning of the data channel 324 before the subframe 314). The MS needs to buffer all potential data channel resources from the starting sub-frame 314 of the data channel 324.
Fig. 4 shows an example of determining a data channel start subframe based on a detected number of decoded control channel occupied subframes and a known interval, according to an embodiment of the present invention. Control channel 421 occupies subframes 401, 402, 403, and 404, with a starting subframe 411 in subframe 401 and an ending subframe 415 in subframe 404，The number of subframes 400 is 4. The UE determines the start of the data channel with a known interval between the end subframe 415 of the control channel to the start subframe of the data channel for the UE. As shown in fig. 4, three example data channels 422, 423, and 424 each occupy one or more subframes, with starting subframes 412, 413, and 414, respectively. To determine the starting subframe of the data channel 422, the UE acquires an interval 432, which interval 432 is the number of subframes between the ending subframe 415 of the control channel 421 and the starting subframe 412 of the data channel 422. Upon successful decoding of the control channel 421, the UE may determine the starting subframe 412 of the data channel 422 based on the interval 432. Similarly, to determine the starting subframe of the data channel 423, the UE acquires an interval 433, the interval 433 being between the ending subframe 415 of the control channel 421 and the starting subframe 413 of the data channel 423The number of subframes of (2). Upon successful decoding of the control channel 421, the UE may determine the starting subframe 413 of the data channel 423 based on the interval 433. To determine the starting subframe of the data channel 424, the UE acquires an interval 434, which interval 434 is the number of subframes between the ending subframe 415 of the control channel 421 and the starting subframe 414 of the data channel 424. Upon successful decoding of the control channel 421, the UE may determine the starting subframe 414 of the data channel 424 based on the interval 434.
The interval from the start subframe of the control channel to the start subframe of the data channel may be positive, negative, or zero. As shown in fig. 4, interval 432 is two subframes. The interval 432 is large enough to ensure that the starting subframe 412 of the data channel 422 follows the ending subframe 415 of the decoded control channel 421. The MS may obtain a resource allocation (or uplink grant) for the data channel 422 in each subframe 406 through 409 of the decoded control channel 421 transmission. The MS may receive or buffer only the data channel resources indicated by the decoded control channel 421. In another embodiment, the data channel start subframe (e.g., 413 or 414) precedes the decoded control channel 421 or at the end subframe 415. In another embodiment, the MS cannot timely decode the control channel 421 transmitting the resource allocation of the data channel 424 (e.g., cannot decode the control channel 421 at the beginning of the data channel 424 before the subframe 414). The MS needs to buffer all potential data channel resources from the starting sub-frame 414 of the data channel 424.
The known interval may be predefined, such as a four subframe interval between a start subframe of an uplink data channel to an end subframe of a corresponding control channel transmitting an uplink grant for the uplink data channel. In another embodiment, one subframe interval corresponds to the interval between the start subframe of the data channel to the end of the corresponding control channel. Using the one subframe interval, the MS can decode the control channel and acquire radio resource information of the data channel. Therefore, the MS can receive and buffer only the radio resources of the data channel. This may save the buffer size of the MS and give the BS more scheduling flexibility. The radio resource information of the data channel may be the number of subframes occupied by the data channel, physical resource blocks in each subframe, and the like. Alternatively, the interval is configured by higher layer messages, such as RRC signaling.
It is a special case to know that the interval is zero, such as interval 332 in fig. 3 and interval 434 in fig. 4. This means, for example, that the data channel 424 starts transmission in the same subframe 404 as the ending subframe of the decoded control channel 421. The interval may be less than zero, such as interval 433. The data channel 423 starts transmission at sub-frame 413 before the end sub-frame 415 of the decoded control channel 421. In this case, the MS needs to receive and buffer radio resources that can transmit the data channel 423 before the decoded control channel 421. The MS then needs to decode the data channel. When the known interval is greater than zero, as at interval 432, the data channel 422 begins transmission at sub-frame 412 after the ending sub-frame 415 of the decoded control channel 421.
In another novel aspect, the control channel includes a subframe indicator of the UE to determine a data channel start subframe. Fig. 5 shows an example of determining a starting subframe of a data channel based on a subframe indicator in a decoded control channel according to an embodiment of the present invention. The control channel 511 includes radio resources in subframes 501, 502, and 503. The UE decodes the control channel 511. In one embodiment, the UE acquires the subframe indicator 531 in the decoded control channel 521. The UE determines a starting subframe for the data channel 512 based on the subframe indicator 531.
Fig. 6 shows some examples of subframe indicators according to embodiments of the invention. The control channel 623 occupies the subframes 601, 602, 603, and 604. The data channel 622 occupies the subframes 606, 607, 608, and 609. The UE decodes the control channel 623. The decoded control channel 621 contains subframe information 631. Subframe information 631 includes information used by the UE to determine the starting subframe for data channel 622. In one example, the subframe indicator representation 631 indicates the number of subframes 611, labeled as interval 611, between a starting subframe 629 of the data channel 622 and a starting subframe 627 of the control channel 623. In another example, the subframe indicator 631 indicates a subframe index at the beginning of the data channel 622. The subframe index may comprise an index of one or more periods. For example, the subframe index may include a System Frame Number (SFN) multiplied by the Number of subframes in one radio Frame and the subframe index within one SFN. In an LTE system, the SFN is indicated within the MIB (e.g., from 0-1023). Each radio frame comprises 10 subframes with subframe indexes from 0 to 9. In this case, the subframe index range may be 0 to 1023. In another embodiment, it may also be a period index, such as a subframe index within a fixed time, such as a subframe index from 0 to 9.
Fig. 7 shows an example of determining a data channel start subframe with a subframe indicator and a known interval according to an embodiment of the present invention. The control channel 721 occupies the subframes 701, 702, 703, and 704. Data channel 722 occupies subframes 706, 707, 708, and 709. In one embodiment, the MS acquires the subframe indicator 731 in the decoded control channel 723. The MS determines the starting subframe of the data channel 722 based on the subframe indicator 731 and the known interval 710 from the starting subframe of the data channel 722 to the ending subframe of the control channel 721. The interval 710 may be predefined or configured via higher layer messages. The subframe indicator 731 indicates the number of subframes 711, labeled as the number of control frames 711, occupied by the control channel 721 for the MS. In a practical embodiment, the control channel is transmitted in subframe 701 to subframe 704 using subframe number 711. The control channel is repeated in multiple subframes, and each subframe carries all the information of the control channel. The MS attempts to decode the control channel and may successfully decode the control channel early with subframe 702. Without an additional indicator of the number of subframes occupied by the control channel 721 for the MS, the MS may only detect a portion of the control channel, labeled as detected control frame 712, such as control channel 720 occupying only subframes 701 and 702. The MS may determine that the data channel starts from subframe 703 based on the known interval 710, resulting in the erroneous data channel 723. Thus, the erroneous data channel 723 is advanced by an offset 713 with respect to the correct data channel 722. To avoid this, an indicator of the number of subframes occupied by the decoded control channel may be carried on the decoded control channel. The indicator indicates the actual number of subframes occupied by the decoded control channel.
Alternatively, the mapping rule of the number of subframes and the indicator may be predefined. Fig. 8 is an example of a predefined rule for the number of subframes occupied by the subframe indicator and the control channel. After the MS decodes the control channel, the MS knows the number of subframes occupied by the control channel through the subframe indicator in the decoded control channel. Thus, the MS may calculate an ending subframe of the decoded control channel, such as subframe 704 shown in fig. 7.
Other rules that apply to the acquired subframe indicators may be predefined. Fig. 9 shows a schematic diagram of applying a rule to a decoded subframe indicator to obtain a data channel start subframe. The control channel 923 occupies subframes 901, 902, 903, and 904. Data channel 922 occupies subframes 906, 907, 908, and 909. The UE decodes the control channel 923. The decoded control channel 921 contains subframe information 931. Subframe information 931 includes information used by the UE to determine the starting subframe of the data channel 922.
In one embodiment, the MS may obtain a subframe indicator in a decoded control channel and determine a data channel starting subframe based on the subframe indicator and a predefined rule. After the MS acquires the subframe indicator 931, the predefined rule is applied (step 941). In one embodiment, the predefined rule is based on the MS index (step 942). For example, the MS index is an MS ID or RNTI. In another example, the predefined rule is based on BS identification (step 943). For example, the predefined rule requires that the data channel starting subframe is the smallest indexed subframe after the control channel has been decoded and that it can satisfy:
N Mod NID＝A
where N is the subframe index, NIDIs the MS index, a is the subframe index indicator, MOD denotes the modulo operation. In another example, NIDIs the BS identification ID. The BS ID may be a physical ID or a virtual ID, labeled BS-ID in the figure.
The subframe indicator may be carried in control information in the decoded control channel. For example, the subframe indicator may be some Information field in a Downlink Control Information (DCI) format. Fig. 10 shows some examples of subframe indicators transmitted in control information according to embodiments of the present invention. In this embodiment, some original fields 1011 in the DCI format 1001 may be redefined as a subframe indicator 1021. In another embodiment, a subframe indicator 1022 in the new field 1012 is added in the new DCI format 1002.
Fig. 11 is a schematic flow chart of a UE determining a data channel start subframe according to an embodiment of the present invention. In step 1011, a UE in a wireless network monitors one or more candidate control channels, wherein at least one candidate control channel occupies radio resources in a plurality of subframes. In step 1102, the UE decodes a control channel for the UE. In step 1103, the UE determines a data channel start subframe for the UE based on the decoded control channel. In step 1104, the UE acquires a known interval, wherein determining the data channel start subframe is further based on the known interval. In step 1105, a subframe indicator is obtained at the decoded control channel, wherein the determining the data channel start subframe is further based on the subframe indicator.
Although the present invention has been described with respect to some specific embodiments for implementation purposes, the present invention is not limited thereto. Thus, various modifications, adaptations, and combinations of the various features of the described embodiments can be practiced without departing from the scope of the invention as set forth in the claims.
Claims (19)
1. A method of determining a starting subframe of a data channel, comprising:
a user equipment in a wireless network monitors one or more candidate control channels, wherein at least one candidate control channel occupies radio resources in a plurality of subframes;
decoding a control channel for the user equipment; and
determining a data channel starting subframe for the user equipment based on the decoded control channel and the subframe interval.
2. The method of determining a data channel start subframe as claimed in claim 1 wherein said subframe interval is predefined.
3. The method of determining a data channel start subframe as claimed in claim 1 wherein said subframe interval is an interval between said data channel start subframe and an end subframe of said decoded control channel.
4. The method of determining a starting subframe of a data channel of claim 3 wherein an ending subframe of the decoded control channel is determined based on the detected number of starting subframes and subframe repetitions of the control channel.
5. The method of determining a data channel start subframe as claimed in claim 4 wherein said user equipment obtains said number of subframe repetitions from downlink control information.
6. The method of determining a data channel start subframe as claimed in claim 1, further comprising:
obtaining a subframe indicator on the decoded control channel, wherein determining the data channel starting subframe is further based on the subframe indicator.
7. The method of determining a data channel start subframe as claimed in claim 6 wherein said subframe indicator indicates a number of subframes from said data channel start subframe to a start subframe of said decoded control channel.
8. A method of determining a data channel start subframe as claimed in claim 6, wherein the subframe indicator represents the number of subframes from the data channel start subframe to the end subframe of the decoded control channel.
9. A method of determining a data channel start subframe as claimed in claim 6, wherein the subframe indicator represents a subframe index at the start of the data channel.
10. A user equipment for determining a starting subframe of a data channel, comprising:
a transceiver module for receiving and transmitting wireless signals in a wireless network;
a control channel monitor to monitor one or more candidate control channels, wherein at least one candidate control channel occupies radio resources in a plurality of subframes;
a control channel decoder for decoding a control channel for the user equipment;
an interval processor for acquiring a subframe interval; and
a data channel processor for determining a data channel starting subframe for the user equipment based on a decoded control channel and the subframe interval.
11. The user equipment for determining a data channel start subframe as claimed in claim 10 wherein the subframe interval is predefined.
12. The user equipment for determining a data channel start subframe as claimed in claim 10 wherein said subframe interval is an interval between said data channel start subframe and an end subframe of said decoded control channel.
13. The user equipment for determining a starting subframe of a data channel of claim 12 wherein an ending subframe of the decoded control channel is determined based on the detected number of repetitions of the starting subframe and the subframe of the control channel.
14. The user equipment for determining a data channel start subframe as claimed in claim 13 wherein said user equipment obtains said number of subframe repetitions from downlink control information.
15. The user equipment for determining a data channel start subframe of claim 10 wherein the user equipment further obtains a subframe indicator on the decoded control channel, wherein determining the data channel start subframe is further based on the subframe indicator.
16. The user equipment for determining a data channel start subframe as claimed in claim 15 wherein the subframe indicator indicates a number of subframes from the data channel start subframe to a start subframe of the decoded control channel.
17. The user equipment for determining a data channel start subframe as claimed in claim 15, wherein the subframe indicator represents a number of subframes from the data channel start subframe to an end subframe of the decoded control channel.
18. The user equipment for determining a data channel start subframe as claimed in claim 15, wherein the subframe indicator represents a subframe index at the start of the data channel.
19. A memory storing a program that, when executed, causes a user equipment to perform the steps of the method of determining a data channel start subframe as claimed in any one of claims 1 to 9.
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| PCT/CN2013/081200 WO2015018075A1 (en) | 2013-08-09 | 2013-08-09 | Method to determine the starting subframe of data channel |
| CNPCT/CN2013/081200 | 2013-08-09 | ||
| CN201480003579.5A CN104871469B (en) | 2013-08-09 | 2014-08-08 | Determine the user equipment and method of data channel starting subframe |
| PCT/CN2014/083993 WO2015018361A1 (en) | 2013-08-09 | 2014-08-08 | Method to determine starting subframe of data channel |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110620747B (en) * | 2013-08-09 | 2022-05-10 | 寰发股份有限公司 | User equipment and method for determining data channel starting subframe |
| WO2016180451A1 (en) * | 2015-05-08 | 2016-11-17 | Huawei Technologies Co., Ltd. | Subframe timing with variable starting time |
| US10674535B2 (en) | 2015-11-13 | 2020-06-02 | Futurewei Technologies, Inc. | Device, network, and method for communications with opportunistic transmission and reception |
| CN111510954B (en) * | 2016-02-05 | 2021-12-31 | 中兴通讯股份有限公司 | Method and device for determining scheduling timing interval |
| WO2017133339A1 (en) * | 2016-02-05 | 2017-08-10 | 中兴通讯股份有限公司 | Method and apparatus for determining schedule timing interval |
| US11477771B2 (en) | 2016-04-05 | 2022-10-18 | Qualcomm Incorporated | Indicating start and stop symbols of PDSCH and PUSCH through PDCCH |
| CN107733550A (en) * | 2016-08-11 | 2018-02-23 | 株式会社Ntt都科摩 | Indicate and determine method, base station and the user equipment of the starting transmission timing of subframe |
| CN108282880B (en) * | 2017-01-06 | 2019-11-08 | 电信科学技术研究院 | A kind of method and device of the initial position of determining downstream data channel |
| CN109392146B (en) * | 2017-08-11 | 2023-04-28 | 华为技术有限公司 | Method, terminal and network equipment for determining uplink transmission resources |
| CN110536459A (en) * | 2018-08-10 | 2019-12-03 | 中兴通讯股份有限公司 | A kind of repetitive transmission method and device, communication equipment and storage medium |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483921A (en) * | 2008-01-07 | 2009-07-15 | 华为技术有限公司 | Wireless resource allocating, receiving method, allocating and receiving apparatus |
| US20100260057A1 (en) * | 2007-12-14 | 2010-10-14 | Jung Hoon Lee | Method for mapping control channels |
| CN101939939A (en) * | 2008-02-06 | 2011-01-05 | 爱立信电话股份有限公司 | Methods and devices relating to downlink assignments |
| US20110188428A1 (en) * | 2008-08-11 | 2011-08-04 | Ntt Docomo, Inc. | Base station apparatus and communication control method |
| WO2012032726A1 (en) * | 2010-09-07 | 2012-03-15 | パナソニック株式会社 | Base station, terminal, transmission method, and reception method |
| WO2012102510A2 (en) * | 2011-01-26 | 2012-08-02 | 엘지전자 주식회사 | Method for transmitting and receiving downlink control information in wireless communication system and device therefor |
| WO2012109542A1 (en) * | 2011-02-11 | 2012-08-16 | Interdigital Patent Holdings, Inc | Systems and methods for an enhanced control channel |
| CN102783053A (en) * | 2009-12-24 | 2012-11-14 | 三星电子株式会社 | Method and apparatus for defining transceiving timing of a physical channel in a TDD communication system which supports cross-carrier schedulin |
| CN102823176A (en) * | 2010-03-26 | 2012-12-12 | 高通股份有限公司 | Method and apparatus for reliable transmission of control information in a wireless communication network |
| US20130058233A1 (en) * | 2010-01-19 | 2013-03-07 | Samsung Electronics Co. Ltd. | Method and apparatus for activating carriers in mobile communication system |
| WO2013055078A2 (en) * | 2011-10-09 | 2013-04-18 | 엘지전자 주식회사 | Method for setting starting position of data channel in wireless communication system and device using method |
| CN104871469B (en) * | 2013-08-09 | 2019-11-08 | 寰发股份有限公司 | Determine the user equipment and method of data channel starting subframe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714562B (en) * | 2010-01-08 | 2020-11-24 | Lg电子株式会社 | Method and apparatus for receiving downlink signal in wireless communication system supporting carrier aggregation |
| US8437303B2 (en) * | 2011-07-04 | 2013-05-07 | Ofinno Technologies, Llc | System frame number in multicarrier systems |
-
2014
- 2014-08-08 CN CN201910936329.1A patent/CN110620747B/en active Active
- 2014-08-08 CN CN201480003579.5A patent/CN104871469B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100260057A1 (en) * | 2007-12-14 | 2010-10-14 | Jung Hoon Lee | Method for mapping control channels |
| CN101483921A (en) * | 2008-01-07 | 2009-07-15 | 华为技术有限公司 | Wireless resource allocating, receiving method, allocating and receiving apparatus |
| CN101939939A (en) * | 2008-02-06 | 2011-01-05 | 爱立信电话股份有限公司 | Methods and devices relating to downlink assignments |
| US20110188428A1 (en) * | 2008-08-11 | 2011-08-04 | Ntt Docomo, Inc. | Base station apparatus and communication control method |
| CN102783053A (en) * | 2009-12-24 | 2012-11-14 | 三星电子株式会社 | Method and apparatus for defining transceiving timing of a physical channel in a TDD communication system which supports cross-carrier schedulin |
| US20130058233A1 (en) * | 2010-01-19 | 2013-03-07 | Samsung Electronics Co. Ltd. | Method and apparatus for activating carriers in mobile communication system |
| CN102823176A (en) * | 2010-03-26 | 2012-12-12 | 高通股份有限公司 | Method and apparatus for reliable transmission of control information in a wireless communication network |
| WO2012032726A1 (en) * | 2010-09-07 | 2012-03-15 | パナソニック株式会社 | Base station, terminal, transmission method, and reception method |
| WO2012102510A2 (en) * | 2011-01-26 | 2012-08-02 | 엘지전자 주식회사 | Method for transmitting and receiving downlink control information in wireless communication system and device therefor |
| WO2012109542A1 (en) * | 2011-02-11 | 2012-08-16 | Interdigital Patent Holdings, Inc | Systems and methods for an enhanced control channel |
| WO2013055078A2 (en) * | 2011-10-09 | 2013-04-18 | 엘지전자 주식회사 | Method for setting starting position of data channel in wireless communication system and device using method |
| CN104871469B (en) * | 2013-08-09 | 2019-11-08 | 寰发股份有限公司 | Determine the user equipment and method of data channel starting subframe |
Non-Patent Citations (4)
| Title |
|---|
| HUAWEI: "R1-124080 "Remaining details of EPDCCH/PDSCH start symbol configuration"", 《3GPP TSG RAN WG1 MEETING #70BIS R1-124080》 * |
| HUAWEI: "R1-130757 "Joint proposal for corrections to PDSCH/EPDCCH resource mapping and PDSCH/EPDCCH starting position for CoMP in 36.213"", 《3GPP TSG RAN WG1 MEETING #72 R1-130757》 * |
| LG ELECTRONICS: "R1-120452 "Resoruce Configuration for E-PDCCH based SS"", 《3GPP TSG RAN WG1 MEETING #68 R1-120452》 * |
| LG ELECTRONICS: "R1-132234 "Further consideration points for provision of MTC UEs"", 《3GPP TSG RAN WG1 #73 R1-132234》 * |
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