WO2013107045A1 - Procédé de distribution de ressources, et procédé et dispositif de recherche associés - Google Patents

Procédé de distribution de ressources, et procédé et dispositif de recherche associés Download PDF

Info

Publication number
WO2013107045A1
WO2013107045A1 PCT/CN2012/070671 CN2012070671W WO2013107045A1 WO 2013107045 A1 WO2013107045 A1 WO 2013107045A1 CN 2012070671 W CN2012070671 W CN 2012070671W WO 2013107045 A1 WO2013107045 A1 WO 2013107045A1
Authority
WO
WIPO (PCT)
Prior art keywords
search space
resource
enhanced control
unit
control channel
Prior art date
Application number
PCT/CN2012/070671
Other languages
English (en)
Chinese (zh)
Inventor
张元涛
王轶
周华
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to PCT/CN2012/070671 priority Critical patent/WO2013107045A1/fr
Publication of WO2013107045A1 publication Critical patent/WO2013107045A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038—Blind format detection

Definitions

  • the present invention relates to the field of communications, and in particular, to a resource allocation method, a search method, and an apparatus therefor.
  • a physical downlink control channel (PDCCH) is used to transmit control information, where the control information includes downlink scheduling information (DL-Grant) and uplink scheduling information (UL-Grant). ) and power control information.
  • the downlink control signaling (PDCCH) of all mobile stations in the cell is multiplexed in the first several Orthogonal Frequency Division Multiplexing (OFDM) symbols of one subframe. At present, there may be up to 3 OFDM symbols for transmitting downlink control signaling (PDCCH), and the following OFDM symbols are used by the base station to transmit information transmitted by the mobile station in a Physical Downlink Shared Channel (PDSCH).
  • OFDM Orthogonal Frequency Division Multiplexing
  • FIG. 1 shows a schematic diagram of a typical subframe structure in the prior art.
  • control signaling (PDCCH) multiplexed for the mobile station is transmitted in the first 1, 2 or 3 OFDM symbols of the subframe.
  • Each PDCCH may contain 1, 2, 4 or 8 Control Channel Elements (CCEs), each CCE contains 9 Resource Element Groups (REGs), and each REG contains 4 resource particles ( RE, Resource Element), 36 resource particle REs per CCE.
  • CCEs Control Channel Elements
  • REGs Resource Element Groups
  • REGs Resource Element Groups
  • REG resource particles
  • the resource included in the OFDM symbol of the Transmission Control Signaling is referred to as a control signaling space.
  • the mobile station obtains control signaling related to itself in the control signaling space by blind detection.
  • the control signaling space includes a Common Search Space and a UE_specific Search Space.
  • the public search space sends public signaling such as system information, and occupies the first 16 CCEs.
  • the mobile station-specific search space can overlap with the public search space.
  • Table 1 shows the information corresponding to different search spaces.
  • the common search space size is 16 CCEs, and two aggregation levels 4 and 8 are divided.
  • the mobile station searches separately according to aggregation levels 4 and 8, respectively, and the number of search candidates included is 4 and 2, respectively.
  • the mobile station-specific search space may have aggregation levels of 1, 2, 4, and 8, and the number of candidates for each aggregation level of PDCCH is 6, 6, 2, 2, and each candidate contains two searches, that is, a dedicated search in the mobile station. Space, mobile station (6+6+2+2) x2 32 searches. So the total number of searches performed by the mobile station is 12+32.
  • Figure 2 shows a schematic diagram of a common search space and a mobile station specific search space.
  • the two aggregation levels of the common search space are fixed from the first CCE (CCE0 in the figure) and contain 16 CCEs (CCE0 ⁇ CCE15).
  • the mobile station-specific search space corresponds to different search areas according to different aggregation levels.
  • the mobile station-specific search space with the aggregation level of 4 indicated by the dotted line overlaps with the common search space, and the mobile station-specific search space overlaps between different sets of aggregation levels as shown by the dotted line on the right side in FIG. 2)
  • the number of CCEs included in the subframe shown in FIG. 2 is 33, and the numbers 0 to 32 of the CCE are logical numbers.
  • search space For an aggregation level, the corresponding search space is defined by the following formula (harshing function), which is expressed as:
  • ⁇ 1, 2, 4, 8 ⁇ is the aggregation level
  • M is the number of candidates for the PDCCH for each aggregation level;
  • An d is the system subframe number, where ⁇ is the calculated initial value, which is the parameter that determines the starting position of the search space; 3 ⁇ 4NTI is the flag (ID) assigned by the base station to the mobile station.
  • Enhanced PDCCH enhanced control signaling
  • Enhanced PDCCH there is no effective way to allocate the location of the resource where the mobile station search space is located, and how to map the logical search location to the actual physical resource, and how to search.
  • An object of the embodiments of the present invention is to provide a resource allocation method, a search method, and a device for a search space, and dynamically allocate resources of a search space according to each subframe to avoid resource waste.
  • a resource allocation method for a search space for an enhanced control signaling space, where the method includes: transmitting an enhanced control signaling in an open loop-based transmit diversity manner In the mode, the resource in which the search space corresponding to the transmission mode is located is dynamically allocated for each subframe.
  • a resource allocation apparatus for a search space for enhanced control signaling space, and the apparatus includes:
  • a resource allocation unit configured to dynamically allocate, according to the transmission mode of the open loop-based transmit diversity, the resource in which the search space corresponding to the transmission mode is located is dynamically allocated for each subframe.
  • a search method for enhanced control signaling space, the method comprising:
  • the base station Receiving, by the base station, the location of the resource in the search space corresponding to the sending mode; wherein, when the manner of transmitting the enhanced control signaling is the sending mode of the open loop based transmit diversity, the resource in the search space is the base station according to each sub Frames are dynamically allocated; Determining, according to the location of the resource in which the search space is obtained, the number of enhanced control channel particles included in the resource where the search space is located;
  • each candidate location of each aggregation level determining, according to an interleaving algorithm, a location of the enhanced control channel particle corresponding to the physical resource included in the candidate location;
  • a search apparatus for an enhanced control signaling area comprising:
  • a receiving unit configured to receive a location of a resource in a search space corresponding to a sending mode notified by the base station, where the search space is located when the manner of transmitting the enhanced control signaling is a sending mode based on open loop sending diversity
  • the resource is that the base station dynamically allocates and notifies according to each subframe
  • a first processing unit configured to determine, according to the obtained location of the resource where the search space is located, the number of enhanced control channel particles included in the resource where the search space is located;
  • a second processing unit configured to obtain a search space of each aggregation level according to the number of the enhanced control channel particles and a parameter determining a starting position of the search space;
  • a third processing unit configured to determine, according to the interleaving algorithm, a location of the corresponding physical resource corresponding to the enhanced control channel particle included in each candidate location of each aggregation level
  • a search unit configured to acquire data at the obtained location of the physical resource, and obtain the enhanced control signaling after decoding.
  • Another aspect according to an embodiment of the present invention provides a computer readable program, wherein when the program is executed in a resource allocating device, the program causes a computer to execute the resource allocation method as described above in the resource allocating device.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a resource allocation method as described above in the resource allocation device.
  • Another aspect according to an embodiment of the present invention provides a computer readable program, wherein when the program is executed in a search device, the program causes a computer to execute the above search method in the search device.
  • Another aspect according to an embodiment of the present invention provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the above search method in a search device.
  • the beneficial effects of the embodiments of the present invention are as follows: According to the search space corresponding to the transmit diversity TxD transmission mode, the resources of the search space can be dynamically allocated according to each subframe, and the space resources can be fully utilized to avoid resource waste.
  • FIG. 1 is a typical subframe structure of FIG. 1 of the present invention
  • Figure 2 shows a schematic diagram of a common search space and a mobile-specific search space
  • 3 is a schematic diagram of an ePDCCH region
  • FIG. 5A is a schematic diagram of resource configuration when a minimum allocation unit is a CCE
  • FIG. 5B is a schematic diagram of resource configuration when a minimum allocation unit is an eCCE
  • FIG. 7 is a schematic diagram of a mapping relationship between logical resources and physical resources
  • FIG. 9 is a second schematic diagram of a mapping relationship between logical resources and physical resources.
  • FIG. 10 is a third schematic diagram of a mapping relationship between logical resources and physical resources
  • FIG. 11 is a flowchart of a search method according to Embodiment 2 of the present invention.
  • FIG. 12 is a schematic structural diagram of a resource allocation apparatus of a search space according to Embodiment 3 of the present invention.
  • FIG. 13 is a schematic structural diagram of a resource allocation apparatus of a search space according to Embodiment 4 of the present invention
  • Figure 14 is a block diagram showing the structure of a search device according to a fifth embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an ePDCCH region.
  • the enhanced control signaling (ePDCCH) of the mobile station is transmitted in the data region (ie, the PDSCH region), and the frequency division multiplexing manner is adopted with the PDSCH.
  • the ePDCCH refers to control signaling sent in the data area
  • the PDCCH refers to control signaling sent in the traditional area (ie, the first 3 OFDM symbols).
  • the ePDCCH area only includes a mobile station-specific search space
  • the mobile station only needs to perform the search of the mobile station-specific search space in the ePDDCH area, and does not need to perform the search of the common search space, thereby reducing the number of searches.
  • the ePDCCH area includes both a common search space and a mobile station-specific search space.
  • the ePDCCH transmitted in the mobile station-specific search space has two transmission modes, namely, a closed-loop MIM0-based transmission mode and an open-loop transmission diversity TxD-based transmission mode; and the common search space ePDCCH can only be based on open-loop transmission diversity transmission. the way.
  • the embodiment of the present invention proposes a resource allocation method, a search method and a device thereof for a search space based on the following two points.
  • the common search space and the mobile-specific search space are all based on the mode of transmit diversity, and the two spaces are interleaved according to REG.
  • the ePDCCH area may contain three logical areas, which are a common search space based on open-loop transmit diversity TxD, a mobile-specific search space based on open-loop transmit diversity TxD, and a mobile-specific search space based on closed-loop MIM0.
  • the search space of the ePDCCH transmitted in the subframe is divided into two categories.
  • the two spaces are jointly interleaved according to the constituent units of the smallest allocation unit.
  • the second category Based on the closed-loop MIM0 mode search space, this space only includes the UE-specific search space based on the closed-loop MIM0 transmission mode;
  • the mobile station based on the closed-loop MIM0 scheme does not detect the common search space in the ePDCCH region, and only detects the common search space in the legacy region.
  • the base station Since the base station performs independent scheduling in each subframe, the number of users and scheduling information scheduled in each subframe may be different. If the search space is semi-statically allocated, if the current subframe does not completely occupy the entire search space, it will bring Waste of resources.
  • the base station allocates resources for the search space by using a dynamic allocation manner, that is, dynamically allocates resources of the search space according to each subframe, and places the search space.
  • the location of the resource is dynamically notified to the mobile station in each subframe.
  • the mobile station can calculate the number of CCEs (eCCEs) included in the configured resources according to the resources included in the search space, and obtain a search space for each aggregation level.
  • Step 401 When the manner of transmitting the enhanced control signaling is the transmission mode of the open loop-based transmit diversity TxD, dynamically allocate the search space corresponding to the sending mode according to each subframe. resource of;
  • the dynamic allocation mode is used to allocate resources in the search space; wherein, the dynamic allocation mode means that the resources in the search space are dynamically changed according to each subframe;
  • the base station Since the base station performs independent scheduling in each subframe, the number of users and scheduling information scheduled in each subframe may be different. If the semi-static allocation mode is used to allocate the search space, if the current subframe does not completely occupy the entire search space, It will bring waste of resources. Therefore, in an embodiment, a dynamic allocation method is used to allocate the The resource where the search space is located;
  • the specific resource allocation may adopt the resource allocation mode 0, 1, 2 in the existing standard, as described in the standard, and details are not described herein again.
  • Step 402 Notify the mobile station of the location of the allocated resource of the search space
  • the specific location of the resource included in the TxD-based search space dynamically informs the mobile station in each subframe
  • the location of the resource of the mobile station is notified by high layer signaling or a message
  • a new downlink control information (DCI, Downl ink Control Information) may be set for the dynamic notification mode, and a fixed resource is allocated in the data region (PDSCH region) for transmitting the DCI.
  • DCI Downl ink Control Information
  • the search space is classified according to the transmission method before the resources are allocated.
  • the method may further include: configuring a search space according to the sending manner; wherein, the search space based on the sending manner of the sending diversity:
  • the mobile station searches for a mobile station-specific search space transmitted in the ePDCCH region.
  • the common search space and the mobile-specific search space are interleaved according to the constituent units of the smallest allocation unit;
  • the mobile station searches for the mobile station-specific search space and the common search space transmitted in the ePDCCH region.
  • the search space based on the closed MIM0 mode includes a UE-specific search space based on the closed MIM0 transmission mode;
  • the mobile station does not search for the common search space transmitted in the ePDCCH.
  • the mobile station may be notified of the search space corresponding to the configured transmission mode, so that the mobile station performs a corresponding search in the ePDCCH region.
  • the common search space and the UE-specific search space are simultaneously included, the common search space and the mobile
  • the dedicated search space of the station is jointly interleaved according to the constituent units of the smallest allocation unit.
  • control channel particle CCE
  • eCCE enhanced control channel particle
  • each CCE contains 9 REGs, each 1 ⁇ 6 4 1 ⁇ .
  • REG is the constituent unit when the minimum allocation unit is CCE.
  • FIG. 5A is a schematic diagram of resource configuration when the smallest allocation unit is a CCE.
  • An enhanced CCE (eCCE, enhanced CCE) is used as the smallest allocation unit in the allocated search space, and each eCCE includes k sub-bands, which can be allocated in different physical resource block pairs (PRB). Pair) or the same physical resource block pair (PRB pair).
  • the subband is the constituent unit when the minimum allocation unit is eCCE.
  • FIG. 5B is a schematic diagram of resource configuration when the smallest allocation unit is an eCCE.
  • the interleaving can be performed in the above two manners.
  • the interleaving method will be described below with reference to the accompanying drawings, in which the minimum allocation unit is an eCCE.
  • the enhanced control signaling space includes “PRB pair”, and each resource block pair includes a sub-band (mini-band), The number of subbands is "x fc ; each enhanced control channel particle (eCCE) contains subbands; when interleaving according to the smallest unit of allocation unit, the number of columns is _ and the number of rows is ⁇ , according to
  • the J sequence writes the number of the logical subbands into the matrix of ⁇ x in rows, and then reads the logical number in the order of the columns, where /' is a positive integer.
  • Figure 6 is a flow chart of the interleaving process when the minimum allocation unit is eCCE. As shown in FIG. 6, the method includes:
  • Step 603 sequentially writing the number of the logical sub-band (mini-band) into the matrix according to the principle of writing the line.
  • the matrix is as follows -
  • Step 604 reading the number by column
  • the number of logical sub-bands corresponding to each PRB is shown in Figure 7 and Figure 8; for PRB pair 1, the logical sub-bands of the PRB pair 1 are numbered 0, 2, 4, 6, and other PRB pairs. In turn, as shown in Figure 7.
  • the two eCCEs contain different numbers of available REs, so if eCCEO and eCCEl are respectively assigned to two different UEs, There is a difference between the performance of this UE, which is not fair to the eCCEO UE. Based on this observation, two enhancement schemes are proposed below.
  • the enhanced control signaling space when the smallest allocation unit is an enhanced control channel particle, the enhanced control signaling space includes “a resource block pair, and each resource block pair includes A sub-bands, and the total number of sub-bands is “> Each enhanced control channel particle includes a sub-band; when interleaving according to the smallest constituent unit of the allocation unit, the number of columns is ' + , Z is preferably 1, but is not limited to 1.
  • the number of logical subbands is written into the matrix in rows, and then the number is read in the order of the columns; in this case, the number of columns of the matrix is +/, and the number of rows R should be ⁇
  • the enhanced control signaling space includes “resource block pairs (PRBpair), each resource block pair includes t sub-bands, and the total number of sub-bands For " ⁇ ; each enhanced control channel particle contains a subband;
  • the logical subbands Prior to interleaving, the logical subbands are divided into M groups, each group containing A subbands, and then shifted by group pairs: subbands.
  • the logical subbands contained in a group are ⁇ , A, ... > ⁇ ⁇ '
  • the shifting of subbands by group means that the position of at least one subband is arbitrarily transformed as in the case; ⁇ _, the sub-band is shifted to the first position, that is, ⁇ p k - , p 0 , Pl , ..., p k - 2 ⁇ > but is not limited to this shift mode, and can be moved to any position , but each group is shifted in the same way.
  • the four subbands are: group l ⁇ k0, kl, k2, k3 ⁇ , group 2 ⁇ k4, k5, k6, k7 ⁇ , group 3 ⁇ k8, k9, klO, kll ⁇ , group 4 ⁇ kl2, kl3, Kl4, kl5 ⁇ ;
  • group l when shifting the subbands by group, first shift the group 1 logical subband ⁇ k0, kl, k2, k3 ⁇ , for example, the k3th subband Move to the first position and get ⁇ k3, k0, kl, k2 ⁇ .
  • the shift mode is the same as the group 1, that is, after shifting.
  • each group is expressed as: group 2 ⁇ k7, k4, k5, k6 ⁇ , group 3 ⁇ kll, k8, k9, klO ⁇ , group 4 ⁇ kl5, kl2, kl3, kl4 ⁇ .
  • 16 sub-bands are shifted by group.
  • the logical number of the subband is: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 , 12, 13, 14, 15.
  • the four logical subbands are: group 1 ⁇ 0, 1, 2, 3 ⁇ , group 2 ⁇ 4, 5, 6, 7 ⁇ , group 3 ⁇ 8, 9, 10, 11 ⁇ , group 4 ⁇ 12, 13 , 14, 15 ⁇ .
  • the four logical subbands are: ⁇ 3, 0, 1, 2 ⁇ , group 2 ⁇ 7, 4, 5, 6 ⁇ , group 3 ⁇ 11, 8, 9, 10 ⁇ , group 4 ⁇ 15 , 12, 13, 14 ⁇ .
  • the logical number of the subband after shifting is: 3, 0, 1, 2, 7, 4, 5, 6, 11, 8, 9, 10, 15, 12, 13, 14.
  • the label is read out in columns, and the number of the logical Mini-band corresponding to each PRB is as shown in FIG. As can be seen from the above embodiments, the number of resources allocated to different mobile stations tends to be equal by the above two enhanced schemes.
  • the minimum allocation unit is the eCCE
  • the interleaving manner is the same as the interleaving manner of the PDCCH in the existing standard, and details are not described herein again.
  • the method further includes: configuring a parameter ⁇ for calculating a starting position of the search space, where the parameters are the same for each aggregation level; or configuring one for each aggregation level allocation The parameters are; the mobile station is notified of the configured parameters. In this way, when the mobile station obtains the parameter, the search space of each aggregation level is obtained by using the parameter, and resource waste can be avoided.
  • the embodiment of the present invention uses a dynamic allocation manner to allocate resources of the search space, thereby avoiding waste of resources.
  • the search space is configured according to the sending manner; the mobile station can be notified of the search space by using a new DCI. Where the resource is located; and when the ePDCCH is transmitted, in order to make the number of REs included in each eCCE as equal as possible, a corresponding solution to solve the problem is also proposed.
  • FIG. 11 is a flow chart showing a search method according to a second embodiment of the present invention.
  • the method includes: Step 1101: Receive a location of a resource where a search space corresponding to a sending mode notified by the base station is located.
  • the method for transmitting enhanced control signaling is an open loop-based sending.
  • the resource in which the search space is located is dynamically allocated by the base station according to each subframe, and the base station dynamically notifies the location of the resource where the search space is located according to each subframe;
  • the manner of the notification may be any one of the existing methods.
  • a new DCI may be set to notify, and details are not described herein again.
  • Step 1102 Determine, according to the obtained location of the resource where the search space is located, the number of enhanced control channel particles included in the resource where the search space is located;
  • the number of eCCEs may be determined according to the number of subbands included in each predetermined PRB pair, which is similar to the prior art, and details are not described herein again.
  • Step 1103 Obtain a search space of each aggregation level according to the number of the enhanced control channel particles and a parameter that determines a starting position of the search space.
  • the following formula (3) can be used to calculate the search space of each aggregation level
  • the determination can be made as described in the background art.
  • the enhanced PDCCH search space whether there is a common search space is configurable, if there is no such space (based on the first configuration of the TxD transmission mode, only the mobile station-specific search space is included), according to the background art If the mobile station-specific search space calculated in the manner described does not include several eCCEs starting from 0, it will bring waste of resources.
  • the parameter may be configured by the base station, and then notified to the mobile station, the parameter is a parameter configured by the base station to the mobile station to determine a starting position of the search space,
  • the parameter may be a value that is the same for all the agreement levels, or a value may be separately prepared for each agreement level.
  • the parameter is configurable. Is 0 or any positive integer.
  • Step 1104 Determine, for each candidate location of each aggregation level, a location of the physical resource corresponding to the eCCE included in the candidate location according to an algorithm of interleaving;
  • determining the location of the physical resource according to the interleaving algorithm may be any one of the existing methods, and details are not described herein again.
  • Step 1105 Read data at the obtained location of the physical resource, and decode the data to obtain the enhanced control signaling.
  • the method further includes: acquiring a search space corresponding to the sending manner configured by the base station; where, a search space based on a sending manner of the sending diversity:
  • a common search space and a mobile-specific search space are included, and the common search space and the mobile-specific search space are interleaved according to the constituent units of the smallest allocation unit.
  • the search space based on the closed MIM0 mode includes a UE-specif ic search space based on the closed MIM0 transmission mode;
  • the mobile station does not search for the common search space transmitted in the ePDCCH.
  • the method may further include: receiving, by the mobile station, a parameter configured to calculate a starting position of the search space, the parameter may be stored and used when the mobile station performs a search space.
  • the base station uses a dynamic allocation manner to allocate resources of the search space and dynamically notify the resource location, thereby avoiding waste of resources.
  • the search space is configured according to the sending manner, so that the mobile station can dynamically The location of the resource to be notified to determine the search space corresponding to each aggregation level, thereby performing a search.
  • the embodiment of the invention further provides a resource allocation device and a search device for a search space, as described in the following embodiments. Since the resource allocation device and the search device of the search space solve the problem similarly to the resource allocation method and the search method of the device, the resource allocation device and the search device of the search space may be implemented. To refer to the implementation of the method, the repetition will not be repeated.
  • Figure 12 is a diagram showing a resource allocation device for a search space according to a third embodiment of the present invention.
  • the apparatus is for an enhanced control signaling area, which may be a network side entity, such as a base station.
  • the device includes a resource allocation unit 1201;
  • the resource allocation unit 1201 is configured to dynamically allocate resources of the search space corresponding to the transmission mode for each subframe when the manner of transmitting the enhanced control signaling is the transmission mode of the open loop-based transmission diversity.
  • the specific manner of allocating resources by the resource allocating unit 1201 is as described in step 401 of Embodiment 1, and details are not described herein again. It can be allocated according to the constituent units of the smallest allocation unit, such as REG or sub-band.
  • the apparatus further includes a first notification unit 1202, and the first notification unit 120 is configured to notify the mobile station of the location of the allocated resource of the search space.
  • the notification is dynamically performed in accordance with each subframe.
  • the notification unit 1202 may also set a new DCI, and notify the mobile station of the location of the resource through the DCI.
  • the embodiment of the present invention uses a dynamic allocation manner to allocate resources of the search space, thereby avoiding waste of resources; in addition, the location of the resource where the search space is located by the mobile station can be notified by the new DCI.
  • Figure 13 is a block diagram showing the structure of a resource allocation apparatus according to a fourth embodiment of the present invention.
  • the apparatus includes a resource allocation unit 1301 and a first notification unit 1201; further, the apparatus further includes a space configuration unit 1303, and the space configuration unit 1303 is configured to configure a search space according to a transmission manner;
  • the device may further include a notification unit 1304 and a first storage unit 1305; wherein the notification unit 1304 is configured to notify the mobile station of the search space corresponding to the configured transmission mode; the first storage unit 1305 is configured to be configured The search space corresponding to the sending method is stored. In this way, when the resource allocation unit 1301 performs resource allocation, the search space corresponding to the transmission mode can be obtained from the space configuration unit 1303 or the first storage unit 1305.
  • the configured search space based on the sending manner is as described in Embodiment 1 and Embodiment 2, and details are not described herein.
  • the apparatus may further include: a parameter configuration unit and a second notification unit (not shown); wherein the parameter configuration unit is configured to configure a parameter for calculating a starting position of the search space, wherein, for each aggregation The parameters described in the level are the same; or one parameter is configured for each aggregation level allocation; the second notice The element is used to notify the mobile station of the configured parameters.
  • the search space when the TxD-based transmission mode is used, in the ePDCCH region, when the search space includes both the common search space and the mobile station-specific search space, when transmitting enhanced control signaling (ePDCCH), according to the smallest allocation unit
  • the constituent units are interleaved; wherein the smallest allocation unit is a control channel particle or an enhanced control channel particle, as shown in Embodiment 1, FIG. 5A and FIG. 5B, and details are not described herein again.
  • the apparatus further includes an interleaving unit (not shown) for interleaving in accordance with the constituent unit of the smallest allocation unit.
  • the minimum allocation unit is a control channel particle (CCE) or an enhanced control channel particle (eCCE), and the specific content is shown in Embodiment 1, and details are not described herein again.
  • the interleaving unit may perform interleaving in the manner described in Embodiment 1.
  • the interleaving is similar. The following takes the smallest allocation unit as an example of eCCE.
  • the enhanced control signaling space includes M resource block pairs (PRB pairs), and each resource block pair includes a sub-band (mini-band).
  • PRB pairs resource block pairs
  • mini-band sub-band
  • the number of subbands is wx fc
  • each enhanced control channel particle (eCCE) contains subbands
  • the number of columns is the number of rows.
  • the enhanced control signaling space includes M resource block pairs, each resource block pair includes sub-bands, and the total number of sub-bands is M x fc ;
  • Each enhanced control channel particle contains 'subbands'; when the interleaving unit interleaves according to the smallest unit of allocation unit, the number of columns is +Z , and Z is preferably 1.
  • the number of logical subbands is written into the matrix in rows, and then the number is read in the order of the columns; in this case, the number of columns of the matrix is + /, and the number of rows R should be ⁇ After rounding up, get j + l
  • the resource allocation apparatus further includes a processing unit (not shown), wherein the enhanced control signaling space includes M when the minimum allocation unit is an enhanced control channel particle A pair of resource blocks, each of which has a sub-band, the total number of sub-bands is M x fc ; when each enhanced control channel particle contains 'sub-bands, the logical sub-band is divided into w groups before interleaving, Each group contains sub-bands, and then the sub-bands are shifted by group. For example, suppose a group contains subbands. ..., Pk _ x ), the shifting of the sub-bands by group means arbitrarily transforming the position of at least one sub-band.
  • the ⁇ sub-bands are shifted to the first position, ie /A, ..., p k but not limited to this shifting mode, they can be moved to any position, but each group must be guaranteed The subbands are shifted in the same way.
  • the interleaving unit performs interleaving in a row read manner in accordance with row writing.
  • the interleaving unit performs interleaving in a row read manner in accordance with row writing.
  • the resource allocation device may be a network side functional entity, such as a base station.
  • the device in the embodiment of the present invention allocates the resource in the search space by using a dynamic allocation manner, and avoids waste of resources.
  • the embodiment configures the search space according to the sending manner; the mobile station can be notified by the new DCI. The location of the resource where the search space is located; and when the ePDCCH is transmitted, in order to make the number of REs included in each eCCE as equal as possible, a corresponding solution to solve the problem is also proposed.
  • Figure 14 is a diagram showing the structure of a search device according to a fifth embodiment of the present invention.
  • the apparatus includes: a receiving unit 1401, a first processing unit 1402, a second processing unit 1403, a third processing unit 1404, and a search unit 1405;
  • the receiving unit 1401 is configured to receive a location of a resource where the search space corresponding to the sending mode notified by the base station is located, where the search space is located when the manner of transmitting the enhanced control signaling is the sending mode of the open loop-based sending diversity
  • the resource is that the base station dynamically allocates and notifies according to each subframe
  • the first processing unit 1402 is configured to determine, according to the obtained location of the resource where the search space is located, the number of enhanced control channel particles included in the resource where the search space is located;
  • a second processing unit 1403, configured to obtain a search space of each aggregation level according to the number of the enhanced control channel particles and a parameter that determines a starting position of the search space;
  • the third processing unit 1404 is configured to determine, according to the interleaving algorithm, a location of the corresponding physical resource corresponding to the enhanced control channel particle included in each candidate location of each aggregation level;
  • the searching unit 1405 is configured to obtain data on the obtained location of the physical resource, and perform decoding to obtain the enhanced control signaling.
  • the device further includes an obtaining unit 1406, and the obtaining unit 1406 is configured to obtain a search space corresponding to the sending mode configured by the base station.
  • the specific content is as described in Embodiment 1, and details are not described herein again.
  • the apparatus may further include a second storage unit 1407, configured to store a location of a resource where the search space received by the receiving unit 1401 is located, and a search for a base station configuration acquired by the obtaining unit 1406. space.
  • the receiving unit 1401 and the obtaining unit 1406 can be implemented by one unit.
  • the apparatus may further include a parameter receiving unit 1408, configured to receive a parameter configured by the base station for calculating a starting position of the determining search space, and the second storage unit 1407 may further store the parameter, and perform a search at the mobile station. Use when space is available. This part is an optional part.
  • the base station uses a dynamic allocation manner to allocate resources of the search space and dynamically notify the resource location, thereby avoiding waste of resources.
  • the search space is configured according to the sending manner, so that the mobile station can dynamically
  • the resource location of the notification determines the search space corresponding to each aggregation level, thereby performing a search.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a resource allocation device, the program causes a computer to execute the resource allocation method as described in Embodiment 1 in the resource allocation device.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the resource allocation method as described in Embodiment 1 in the resource allocation device.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a search device, the program causes a computer to execute the search method as described in Embodiment 2 in the search device.
  • the embodiment of the present invention also provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the search method as described in Embodiment 2 in the search device.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented 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 steps.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de distribution de ressources pour un espace de recherche, et un procédé et un dispositif de recherche associés. Selon Le procédé de distribution des ressources, si le mode d'envoi d'une signalisation de commande améliorée est un mode d'envoi en diversité de transmission en boucle ouverte, les ressources sont distribuées dynamiquement, en fonction de chaque sous-trame, dans un espace de recherche qui correspond au mode d'envoi. Ce procédé permet d'utiliser pleinement les ressources, et donc d'éviter le gaspillage de ressources.
PCT/CN2012/070671 2012-01-20 2012-01-20 Procédé de distribution de ressources, et procédé et dispositif de recherche associés WO2013107045A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/070671 WO2013107045A1 (fr) 2012-01-20 2012-01-20 Procédé de distribution de ressources, et procédé et dispositif de recherche associés

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/070671 WO2013107045A1 (fr) 2012-01-20 2012-01-20 Procédé de distribution de ressources, et procédé et dispositif de recherche associés

Publications (1)

Publication Number Publication Date
WO2013107045A1 true WO2013107045A1 (fr) 2013-07-25

Family

ID=48798530

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/070671 WO2013107045A1 (fr) 2012-01-20 2012-01-20 Procédé de distribution de ressources, et procédé et dispositif de recherche associés

Country Status (1)

Country Link
WO (1) WO2013107045A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101415233A (zh) * 2007-10-15 2009-04-22 大唐移动通信设备有限公司 一种资源分配的方法和装置
CN101843155A (zh) * 2007-10-29 2010-09-22 松下电器产业株式会社 无线通信基站装置、无线通信移动台装置和控制信道分配方法
CN101868033A (zh) * 2009-04-20 2010-10-20 大唐移动通信设备有限公司 一种中继链路下行子帧的控制和数据传输方法和装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101415233A (zh) * 2007-10-15 2009-04-22 大唐移动通信设备有限公司 一种资源分配的方法和装置
CN101843155A (zh) * 2007-10-29 2010-09-22 松下电器产业株式会社 无线通信基站装置、无线通信移动台装置和控制信道分配方法
CN101868033A (zh) * 2009-04-20 2010-10-20 大唐移动通信设备有限公司 一种中继链路下行子帧的控制和数据传输方法和装置

Similar Documents

Publication Publication Date Title
US9622231B2 (en) Method of transmitting and receiving control information based on spatial-multiplexing gain
US20220167313A1 (en) Method and apparatus for transmitting control information, electronic device, and storage medium
CN102395206B (zh) 下行控制信息的传输方法和设备
KR101636761B1 (ko) 제어 채널을 위한 탐색 공간 배열
CN110266453B (zh) 盲检公共搜索空间和ue特定搜索空间的方法及设备
TWI496494B (zh) A method and a device for allocating and detecting downlink control channel resources
US11690052B2 (en) Method and apparatus for transmitting and receiving control information and data information in wireless communication system
US20170006584A1 (en) Method and device of resource allocation in physical downlink control channels
WO2013135060A1 (fr) Procédé pour la transmission d'une ressource de canal de commande, équipement d'utilisateur et station de base
WO2013159676A1 (fr) Procédé et dispositif pour la transmission et la détection à l'aveugle d'un e-pdcch
KR20190079700A (ko) 신호 재송신 장치 및 방법 및 통신 시스템
WO2013023461A1 (fr) Procédé et dispositif d'allocation de ressources de canal de contrôle
WO2013135179A1 (fr) Procédé, station de base et équipement d'utilisateur pour la transmission et la réception de données de commande
WO2019052455A1 (fr) Procédé et dispositif de configuration de paramètre de canal de données
KR20150063118A (ko) 채널 검출 방법 및 사용자 장비
WO2012171395A1 (fr) Procédé, système et dispositif d'attribution et de détermination de pdcch
CN103378885B (zh) 下行数据的发送、接收方法和装置
WO2014019206A1 (fr) Procédé de transmission et de réception de canal de commande, station de base et équipement utilisateur
WO2018058485A1 (fr) Procédé et appareil d'écoute, d'envoi et de réception d'informations de commande de liaison descendante
WO2013013643A1 (fr) Procédé et dispositif d'envoi et de réception de canal de commande
WO2014043902A1 (fr) Procédé de transmission d'information de commande en liaison descendante, dispositif côté réseau et équipement d'utilisateur
WO2013149594A1 (fr) Procédé et dispositif de configuration de ressources
WO2014000421A1 (fr) Procédé et dispositif de détermination destinés à des ressources dans un canal de commande physique en liaison montante
TWI693800B (zh) 通訊控制裝置、無線通訊裝置、通訊控制方法、無線通訊方法及程式
EP4210268A1 (fr) Procédé et appareil de transmission et de réception d'informations de commande et d'informations de données dans un système de communication sans fil

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12866081

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12866081

Country of ref document: EP

Kind code of ref document: A1