WO2013170687A1 - 无线通信系统中的通信方法和设备 - Google Patents

无线通信系统中的通信方法和设备 Download PDF

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Publication number
WO2013170687A1
WO2013170687A1 PCT/CN2013/074564 CN2013074564W WO2013170687A1 WO 2013170687 A1 WO2013170687 A1 WO 2013170687A1 CN 2013074564 W CN2013074564 W CN 2013074564W WO 2013170687 A1 WO2013170687 A1 WO 2013170687A1
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WIPO (PCT)
Prior art keywords
control channel
enhanced
enhanced control
configuration
communication system
Prior art date
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PCT/CN2013/074564
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English (en)
French (fr)
Inventor
崔棋楣
张映霓
王辉
李晓娜
Original Assignee
索尼公司
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
Priority to RU2014151226/07A priority Critical patent/RU2582597C1/ru
Application filed by 索尼公司 filed Critical 索尼公司
Priority to CA2872824A priority patent/CA2872824C/en
Priority to IN10210DEN2014 priority patent/IN2014DN10210A/en
Priority to AU2013262263A priority patent/AU2013262263B2/en
Priority to EP13790305.0A priority patent/EP2852235A4/en
Priority to BR112014028175A priority patent/BR112014028175A2/pt
Priority to JP2015511911A priority patent/JP2015521433A/ja
Priority to US14/400,591 priority patent/US20150098405A1/en
Priority to KR1020147034821A priority patent/KR101669353B1/ko
Priority to MX2014013877A priority patent/MX340765B/es
Publication of WO2013170687A1 publication Critical patent/WO2013170687A1/zh
Priority to ZA2014/09004A priority patent/ZA201409004B/en
Priority to US16/412,449 priority patent/US20190274123A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation
    • H04L5/0039Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation
    • H04L5/0041Frequency-non-contiguous
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management

Definitions

  • the present disclosure relates to the field of wireless communications, and in particular, to a communication method, a communication device, and a wireless communication including the communication device, in a subsequent evolution (LTE-A) of, for example, Universal Mobile Telecommunications System (UMTS) Long Term Evolution (LTE-A) system.
  • LTE-A subsequent evolution
  • UMTS Universal Mobile Telecommunications System
  • LTE-A Long Term Evolution
  • LTE-A LTE-A
  • 3GPP completed the technical requirements report of LTE-A, and proposed the minimum requirement of LTE-A, namely, the downlink peak rate of 1 Gbps, the uplink peak rate of 500 Mbps, and the uplink and downlink.
  • the peak spectrum utilization rates are 15 Mbps/Hz and 30 Mbps/Hz, respectively.
  • 3GPP proposes several key technologies for LTE-A, including carrier aggregation, coordinated multi-point transmission and reception, relay transmission and multi-antenna enhancement.
  • the Physical Downlink Control Channel (PDCCH) carries Downlink Control Information (DCI), and includes resource allocation information and other control information on one or more User Equipments (UEs).
  • DCI Downlink Control Information
  • UEs User Equipments
  • uplink and downlink resource scheduling information is carried by the PDCCH.
  • the user needs to demodulate the DCI in the PDCCH before demodulating the physical downlink shared channel (PDSCH: including broadcast message, paging, UE data, etc.) belonging to the user at the corresponding resource location.
  • PDSCH including broadcast message, paging, UE data, etc.
  • an enhanced physical downlink control channel (Enhanced PDCCH, ePDCCH) is proposed in 3GPP standardization. ), used to increase the capacity of control information, and can support technologies such as beamforming, diversity, and inter-cell interference cancellation.
  • ePDCCH enhanced physical downlink control channel
  • 3GPP standardization 3GPP standardization.
  • the ePDCCH will not occupy the area of the previous PDCCH, but share the resources of the data domain with the PDSCH. based on Therefore, the configuration of the ePDCCH needs to be redesigned.
  • some embodiments provide a communication method, device, and system, where the enhanced physical downlink control channel (ePDCCH) configuration scheme can effectively utilize downlink resources and improve transmission performance.
  • ePDCCH enhanced physical downlink control channel
  • a communication method for use in a wireless communication system can include: determining, by a base station in a communication system, a class of enhanced control channel element configurations in an enhanced physical downlink control channel according to a current system configuration of the communication system, wherein the enhanced control channel element configuration includes each Ensuring the number of resource particles in the control channel unit and the number of enhanced control channel elements in each physical resource block pair, and wherein the enhanced control channel unit configuration is classified into a plurality of different system configurations respectively corresponding to the communication system And notifying information about a category of the determined enhanced control channel element configuration to a terminal node in the communication system.
  • a communication method for use in a wireless communication system may include: receiving, by a terminal node in a communication system, information about a class of enhanced control channel element configuration from a base station, the enhanced control channel element configuration including a number of resource particles in each enhanced control channel unit and each a number of physical resource block pairs, the number of enhanced control channel elements, and wherein the enhanced control channel unit configuration is classified into a plurality of categories respectively corresponding to different system configurations of the communication system; and configured according to the enhanced control channel unit The class performs enhanced control channel unit demodulation.
  • a communication device for use in a wireless communication system.
  • the communication device is configured in a base station of the communication system and includes: configuration class determining means for determining a class of the enhanced control channel element configuration in the enhanced physical downlink control channel according to a current system configuration of the communication system, wherein
  • the enhanced control channel unit configuration includes the number of resource particles and each of the enhanced control channel elements And the number of the enhanced control channel elements, and wherein the enhanced control channel unit configuration is classified into a plurality of categories respectively corresponding to different system configurations of the communication system; and transmitting means for determining the relevant The information of the class of the enhanced control channel element configuration is notified to the terminal node in the communication system.
  • a communication device for use in a wireless communication system.
  • the communication device can be configured in a terminal node of the communication system and includes: receiving means for receiving information from the base station regarding a class of enhanced control channel element configuration, the enhanced control channel element configuration being included in each enhanced control channel unit The number of resource particles and the number of enhanced control channel elements in each physical resource block pair, and wherein the enhanced control channel element configuration is classified into a plurality of categories respectively corresponding to different system configurations of the communication system; And means for performing enhanced channel element demodulation according to the class of the enhanced control channel element configuration.
  • a communication method for use in a wireless communication system comprising: determining, by a base station in a communication system, an enhanced physical downlink based on a current system configuration of the trusted system a class of enhanced control channel element configurations in the control channel, wherein the enhanced control channel element configuration includes the number of resource particles in each enhanced control channel unit and the number of enhanced control channel elements in each physical resource block pair, And wherein the enhanced control channel unit configuration is classified into a plurality of categories respectively corresponding to different system configurations of the communication system; the base station notifies information about the determined category of the enhanced control channel unit configuration to the communication a terminal node in the system; receiving, by the terminal node, information from the base station regarding a class of enhanced control channel element configuration; and enhancing, by the terminal node, an enhanced control channel according to a class configured by the enhanced control channel element Unit demodulation.
  • a wireless communication system including a base station and a terminal node.
  • the base station may include: configuration class determining means, configured to determine, according to a current system configuration of the communication system, a class of an enhanced control channel element configuration in an enhanced physical downlink control channel, where the enhanced control channel unit configuration includes The number of resource particles in the enhanced control channel unit and the number of enhanced control channel elements in each physical resource block pair, and wherein the enhanced control channel unit configuration is classified into respectively corresponding to different system configurations of the communication system a plurality of categories; a sending means for notifying information about a category of the determined enhanced control channel element configuration to a terminal node in the communication system.
  • the terminal node may include: receiving means, configured to receive information about a category of the enhanced control channel unit configuration from the base station; and processing And means for performing enhanced control channel unit demodulation according to a category of the enhanced control channel unit configuration.
  • the present disclosure also provides a computer program for implementing the above method.
  • the present disclosure also provides a computer program product in the form of at least a computer readable medium having recorded thereon computer program code for implementing the above method.
  • FIG. 1 is a schematic flow chart showing a communication method for use in a wireless communication system according to an embodiment
  • FIG. 2 is a schematic flowchart showing one specific example of a communication method of dynamically selecting an enhanced control channel unit (eCCE) configuration adapted to a current system configuration;
  • eCCE enhanced control channel unit
  • FIG. 3 is a schematic flow chart showing a communication method for use in a wireless communication system according to an embodiment
  • FIG. 4 is a schematic flow chart showing a specific example in which a terminal node receives eCCE configuration information
  • FIG. 5 is a diagram showing an example of resource occupancy of a physical resource block pair in a system configuration
  • FIG. 6 shows a schematic flow chart of a communication method according to another embodiment of the present disclosure
  • FIGS. 7(A)-(D) are diagrams showing a specific example of an eCCE mapping manner
  • Figure 8 is a schematic block diagram showing the structure of a communication device used in a radio system, according to one embodiment
  • FIG. 9 is a schematic block diagram showing the structure of a communication device used in a radio system according to another embodiment. detailed description
  • Some embodiments of the present disclosure provide a communication method and apparatus in a wireless communication system, and a communication system employing the same or using such a device, wherein a configuration scheme of an enhanced physical downlink control channel is employed (eg, including enhanced control)
  • a configuration scheme of an enhanced physical downlink control channel is employed (eg, including enhanced control)
  • the size of the channel unit and/or the multiplexing mode of the enhanced control channel unit in the resource block and/or the mapping demodulation scheme of the resource element (RE), etc. can effectively utilize the downlink resources and improve the transmission. Performance and compatibility with PDCCH in R 10.
  • FIG. 1 is a flow chart showing a communication method for use in a wireless communication system according to an H-embodiment. The method shown in Fig. 1 is implemented on the base station side in the communication system.
  • the method includes steps 102 and 104.
  • step 102 the class of the enhanced control channel element (eCCE) configuration in the ePDCCH is determined by the base station in the communication system according to the current system configuration of the communication system.
  • eCCE enhanced control channel element
  • An ePDCCH can carry one or more eCCEs.
  • the size of the eCCE that is, the number of resource elements (such as Resource Element, RE) in the eCCE, directly affects the capacity of the ePDCCH, the setting of the search space, and the link-level performance. Therefore, the size of the eCCE is an important indicator of the ePDCCH configuration.
  • the eCCE configuration in the ePDCCH may include the size of each eCCE (ie, the number of resource particles in each eCCE) and each physical resource block pair (PRB pair). The number of eCCEs, etc.
  • the eCCE configurations in the ePDCCH are classified into a plurality of categories respectively corresponding to different system configurations of the communication system.
  • the various system configurations of the communication system can be divided into multiple categories, and correspondingly, eCCE configurations in different classes of ePDCCHs corresponding thereto can be defined, that is, each system configuration can correspond to the eCCE configuration of the corresponding category.
  • the base station can dynamically select the eCCE configuration for the corresponding category based on the current system configuration of the communication system (step 102).
  • step 104 the base station will allocate the relevant enhanced control channel unit The information of the set category is notified to the terminal node in the communication system.
  • the terminal node refers to a user node UE in a communication system, such as a mobile terminal or the like.
  • the base station may transmit the information about the determined class of enhanced control channel element configuration in any suitable manner.
  • the information may be transmitted by using an extension of existing physical downlink control channel signaling (such as legacy PDCCH signaling in R10), that is, the information is encapsulated in extended physical downlink control.
  • Channel signaling is sent to the terminal node.
  • This method is very compatible with the original R10 version, using the original control resources.
  • an enhanced physical downlink control channel signaling ePDCCH signaling
  • ePDCCH signaling may be defined, encapsulated in the newly defined physical downlink control channel signaling, and transmitted to the terminal node. This method is simple and feasible, and only needs to add new signaling, which can be realized by occupying some blank resources.
  • an enhanced physical control format indication channel signaling may be defined, encapsulated in the newly defined ePCFICH signaling and sent to the terminal node.
  • ePCFICH signaling may be defined, encapsulated in the newly defined ePCFICH signaling and sent to the terminal node.
  • the ePDCCH can be well distinguished from the previous PDCCH, which avoids confusion in use.
  • the channel signaling may be indicated by a physical control format, and is not limited to any specific format and will not be described in detail herein.
  • the eCCE configuration in the ePDCCH is classified into a plurality of categories respectively corresponding to different types of system configurations of the communication system, and the base station can select an eCCE corresponding thereto according to the current system configuration of the communication system. Configuration. In this way, resource waste can be reduced (i.e., the number of "blank REs" can be reduced), and link adaptation performance of the ePDCCH can be improved and possible signaling transmission overhead can be reduced.
  • the system configuration of the communication system may include information such as the number of orthogonal frequency division multiplexing (OFDM) symbols carried by the physical downlink control channel and the number of reference signal ports.
  • the number of OFDM symbols carried by the PDCCH and the number of reference signal ports affect the number of available REs of the ePDCCH. Therefore, the class of the enhanced control channel element configuration can be determined based on these configuration information.
  • the base station may use the number of resource particles that can be used to carry the enhanced physical downlink control channel according to one physical resource block pair (or may be used to carry the enhanced physical downlink control channel according to one physical resource block pair). Determine the number of resource particles and the number of reference signal ports) Enhance the class of control channel unit configuration.
  • Figure 5 shows the occupancy of a PRB pair in a system configuration, where a square represents an RE.
  • the PDCCH occupies 2 OFDM symbols
  • the common reference signal CRS uses 4 ports
  • the demodulation reference signal DMRS uses 4 ports
  • the remaining blank RE can be used to carry eCCE
  • Table 1 shows the number of available REs in a PRB pair in a different system configuration in which the demodulation reference signal DMRS is set to use 4 ports, the PDCCH occupies a different number of OFDM symbols, and the CRS uses different port numbers.
  • Table 2 shows the number of available REs in a PRB pair in a different system configuration in which the demodulation reference signal DMRS is set to use 2 ports, the PDCCH occupies a different number of OFDM symbols, and the CRS uses different port numbers.
  • the enhanced control channel unit configuration can be classified into corresponding
  • the information about the category may be referred to as a first signaling by a 2-bit signal, and the first letter is The order is sent to the terminal node.
  • the signaling as described above may be an extension of the existing physical downlink control channel signaling, or may be
  • the eCCE configuration in the ePDCCH can be classified into the following four types according to the number of resource particles that can be used to carry the enhanced physical downlink control channel:
  • each eCCE may include 32 REs, and each physical resource block pair may carry 4 eCCEs;
  • each eCCE may include 30 REs, and each physical resource block pair may carry 4 eCCEs;
  • each eCCE may include 36 REs, and each physical resource block pair may carry 3 eCCEs;
  • each RECCE may include 30 REs, and each physical resource block pair may carry 3 eCCEs.
  • the eCCE configuration in the ePDCCH can be classified into the following four types according to the number of resource particles that can be used to carry the enhanced physical downlink control channel:
  • each eCCE may include 34 REs, and each physical resource block pair may carry 4 eCCEs;
  • Type 6 When the number of resource particles that can be used to carry the enhanced physical downlink control channel is between 128 and 134, each eCCE may include 32 REs, and each physical resource block pair may carry 4 eCCEs;
  • Type 7 When the number of resource particles that can be used to carry the enhanced physical downlink control channel is between 116 and 122, each of the eCCEs may include 38 REs, and each physical resource block pair may carry 3 eCCEs;
  • each RECCE may include 33 REs, and each physical resource block pair may carry 3 eCCEs.
  • Tables 3 and 4 respectively show the relationship between the number of available REs in the above four types of eCCE configuration and the number of eCCEs and the number of eCCEs according to the system configuration of Tables 1 and 2.
  • FIG. 2 shows a specific example of a communication method of dynamically selecting an eCCE configuration adapted to the current system configuration using the four types of eCCE configurations shown in Table 3.
  • step 202-1 it is determined whether the fci of the resource particles that can be used to carry the enhanced physical downlink control channel is between 144 and 128, and if so, the eCCE configuration of the type 1 is selected in step 202-2; otherwise, processing Proceed to step 202-3.
  • step 202-3 it is determined whether the number of resource particles that can be used to carry the enhanced physical downlink control channel is between 126 and 120. If yes, the eCCE configuration of the type 2 is selected in step 202-4; otherwise, processing Proceed to step 202-5.
  • step 202-5 the judgment can be used to carry the enhanced physics. Whether the number of resource particles of the downlink control channel is between 114 and 108. If yes, the eCCE configuration of the type 3 is selected in step 202-6; otherwise, the eCCE configuration of the type 4 is selected in step 202-7. . Then, in step 204-1, the type information about the selected eCCE configuration is encapsulated in a 2-bit signaling (as a specific example, in the signaling, 00 can represent type 1, 01 can represent type 2, 10 can The representation type 3, 11 may represent type 4, etc., which is not described in detail herein, and in step 204-2, the signaling is sent to the terminal node.
  • a 2-bit signaling as a specific example, in the signaling, 00 can represent type 1, 01 can represent type 2, 10 can The representation type 3, 11 may represent type 4, etc., which is not described in detail herein, and in step 204-2, the signaling is sent to the terminal node.
  • one eCCE may be made in the ePDCCH.
  • the number of REs varies between 30-38 (such as 30, 32, 36 or 38). This ensures that the downlink control information (DCI) carried in each eCCE is not too small or too much.
  • DCI downlink control information
  • the eCCE configuration is divided into four categories. With this method, the waste rate of downlink resources is low (calculated, about 4%, and the resource waste rate when the eCCE configuration is divided into two categories is 10). %about).
  • the aggregated link adaptation process becomes complicated, and the signaling overhead required when the base station needs to inform the terminal node about the current eCCE configuration also increases as the eCCE configuration category increases.
  • the first signaling requires only 2 bits. Therefore, by using the communication method shown in Fig. 3, a better balance between resource waste rate and signaling overhead can be obtained.
  • the correspondence between different system configurations and eCCE configuration types may be pre-stored in a base station (such as a storage device stored in a base station).
  • the base station can determine the corresponding eCCE configuration according to the stored correspondence when obtaining the current system configuration, and send information about its category to the terminal node.
  • Various types of information about the eCCE configuration may be pre-stored in a terminal node (e.g., in a storage device stored in the terminal node). After obtaining the information about the category of the eCCE configuration from the base station, the terminal node may query the information corresponding to the category according to the information stored in the category.
  • FIG. 3 is a schematic flow chart showing a communication method for receiving enhanced control channel unit configuration information on the terminal node side corresponding to the method shown in FIG. 1. As shown in FIG. 3, the method may include steps 302 and 304.
  • step 302 the terminal node receives the relevant enhanced control channel unit from the base station Information about the configured category.
  • the enhanced control channel element configuration described herein includes the number of resource particles in each enhanced control channel unit and the number of enhanced control channel elements in each physical resource block pair. Wait. Additionally, the enhanced control channel element configuration is classified into a plurality of categories respectively corresponding to different system configurations of the communication system. It will not be described in detail here.
  • the terminal node performs enhanced control channel unit demodulation according to the type of the enhanced control channel element configuration. Specifically, after obtaining the information about the category of the eCCE configuration from the base station, the terminal node may query the configuration information corresponding to the category in the pre-stored information about the multiple eCCE configurations according to the category, and according to the configuration information, according to the configuration information. To perform demodulation of eCCE.
  • the eCCE configuration can be classified into four categories, for example, the four types shown in Table 3 or Table 4 above.
  • the base station can send information indicating the class of the eCCE configuration corresponding to the current system configuration by using 2-bit signaling (such as the first signaling) (as shown in steps 204-1 and 204-2 of FIG. 2).
  • the terminal node can obtain related information by receiving signaling (e.g., first signaling) encapsulated in 2 bits for indicating an enhanced control channel unit configuration category.
  • the terminal node may obtain information about the eCCE configuration category through a Physical Control Format Indication Channel (PCFICH).
  • PCFICH Physical Control Format Indication Channel
  • This method can well inherit the channel features in the original R10 version and is compatible with it. It does not need to add other signaling information.
  • the PCFICH refers to a physical format indication channel dedicated to indicating the number of OFDM symbols occupied by the PDCCH.
  • the PCFICH is placed in the first OFDM symbol of each subframe and has a size of 2 bits, which actually divides the boundary between the control signaling region and the data region in each subframe.
  • FIG. 4 shows a specific example of receiving eCCE configuration information using the PCFICH. As shown in FIG.
  • the terminal node receives the physical control format indication channel information. Specifically, the terminal node obtains the number of OFDM symbols occupied by the PDCCH transmission in the current system configuration by demodulating the PCFICH information. Then, in step 402-2, the number of resource particles that can be used to carry the enhanced physical downlink control channel is calculated according to the physical control format indication channel information. Specifically, the terminal node may use the PCFICH information to obtain the number of CRS ports by using system information, and then calculate the number of REs currently available for carrying the ePDCCH. In step 402-3, the terminal node queries the pre-stored enhanced control channel unit configuration table (eg, The information shown in Table 2) is used to obtain the category of the eCCE configuration.
  • the pre-stored enhanced control channel unit configuration table eg, The information shown in Table 2
  • FIG. 6 shows a communication method according to another embodiment disclosed in the present invention, wherein the base station further determines a mapping manner of the enhanced control channel unit in the physical resource block pair.
  • the base station determines a mapping manner of the enhanced control channel unit in the physical resource block pair.
  • a plurality of enhanced channel control units in each physical resource block pair may be consecutively mapped into a plurality of resource particles of the physical resource block pair in a diagonal arrangement.
  • the so-called diagonal arrangement means that in each PRB pair, the same eCCE is continuously and locally localized in a diagonal arrangement to the available REs. This makes the mapping law simple in actual operation, which makes the actual mapping algorithm easier to implement.
  • the above-mentioned diagonal arrangement mapping method actually uses a multiplexing method combining time division multiplexing and frequency division multiplexing to multiplex multiple eCCEs in one PRB pair, and time division multiplexing can reduce coding delay.
  • the power balance can be realized by frequency division multiplexing, and the combination of the two can combine the above advantages of time division multiplexing and frequency division multiplexing.
  • FIGs 7(A)-(D) are diagrams showing the continuous mapping of eCCEs in a diagonal arrangement in different types of eCCE configurations, respectively.
  • 7(A) shows an example of mapping when the type 1 eCCE configuration is employed
  • FIG. 7(B) shows an example of mapping when the type 2 eCCE configuration is employed
  • FIG. 7(C) shows the adoption type.
  • FIG. 7(D) shows an example of mapping when eCCE configuration of type 4 is employed.
  • the base station notifies the terminal node of the information about the mapping mode. It should be noted that the above step 608 is optional.
  • the base station does not need to send information about the mapping mode to the terminal node, as long as the mapping method used in various types of eCCE configurations is agreed with the terminal node in advance.
  • the terminal node may perform demodulation according to a pre-agreed mapping manner corresponding to the category.
  • the terminal node may follow the pair
  • the angular arrangement continuously demodulates a plurality of resource particles in a pair of physical resource blocks to obtain respective enhanced channel control units.
  • unoccupied resource particles in a physical resource block pair may be uniformly mapped after each enhanced channel control unit. In this case, after the terminal node completes demodulation for each enhanced channel control unit, the unoccupied resource particles are vacated without demodulation.
  • the base station station obtains the current system configuration, and then calculates the number of REs available for ePDCCH transmission according to the current system configuration. It is assumed that, under the eCCE configuration of the type corresponding to the current system configuration, the size of each eCCE is n and the number of eCCEs carried in each pair of PRBs is x, the base station can calculate each eCCE mapping by using the following formula (1).
  • the symbol " 1 "" means rounding down. If it can be divisible, the number of blank REs after each eCCE is equal, otherwise the last redundant RE is mapped to the last eCCE.
  • the base station by calculating the value of Y, vacates Y REs after each ePDCCH information of n REs is mapped.
  • the base station can pre-determine information about the mapping pattern with the terminal node.
  • the base station may send information about the mapping pattern to the terminal node.
  • the terminal node obtains the eCCE configuration information in the current system configuration (as in the above method, it is not repeated here). Specifically, the size n of each eCCE and the number x of eCCEs carried in each pair of PRBs are obtained.
  • the terminal node obtains the number of REs that need to be vacated after each eCCE is demodulated.
  • the base station may be notified to the terminal node by signaling.
  • the terminal node can calculate ⁇ using the following equation (2).
  • the terminal node can obtain the current system configuration by demodulating the system signaling and the original control channel information, and obtain the number of REs available for ePDCCH transmission according to the current system configuration (for example, Table 1).
  • the terminal node calculates the number of REs that need to be vacated after demodulation of each eCCE by the following equation (2):
  • the terminal node vacates Y REs after demodulating the ePDCCH information of n REs without demodulation.
  • unoccupied resource particles in a physical resource block pair may be uniformly mapped before each enhanced channel control unit.
  • the unoccupied resource particles are skipped without being demodulated. The specific steps are similar to the above examples, and are not described here.
  • the base station may further utilize the unoccupied resource particles (blank RE) of the enhanced physical downlink control channel to include signaling for indicating information of a class of the eCCE configuration corresponding to the current system configuration (eg, A signaling) is sent to the terminal node.
  • the unoccupied resource particles in the physical resource block pair may be uniformly mapped before each enhanced channel control unit, in which case the blank RE located before the eCCE may be used to carry the first signaling. .
  • the terminal node first demodulates the first signaling and then demodulates the eCCE.
  • the first signaling may be placed in another blank RE, and the terminal node receives the information about the mapping pattern sent by the base station (or the information according to the mapping pattern pre-agreed with the base station), and first demodulates the first signal according to the information. Let, in turn, demodulate the eCCE.
  • the signaling using the blank RE to carry information indicating the class of the eCCE configuration corresponding to the current system configuration does not require occupying new resources, and can better utilize resources that may be wasted.
  • multiple enhanced channel control units in each physical resource block pair are successively mapped in a diagonal arrangement to a plurality of resource particles of the physical resource block pair, and the physical downlink is enhanced.
  • the control channel can be mapped to a physical resource block pair in a centralized manner, or can be mapped to multiple physical resource block pairs in a distributed manner.
  • the terminal node can perform demodulation of the enhanced control channel unit on one physical resource block pair to obtain an enhanced physical downlink control channel.
  • the terminal node may perform demodulation of the enhanced control unit on the plurality of physical resource block pairs to obtain an enhanced physical downlink control channel.
  • the communication device 800 can be configured in a base station of a communication system.
  • the communication device 800 can include a configuration category determining device 801 and a transmitting device 803.
  • the communication device 800 can employ the method described above with reference to Figures 1-7.
  • configuration The class determining means 801 can determine the class of the enhanced control channel element configuration in the enhanced physical downlink control channel based on the current system configuration of the communication system.
  • the enhanced control channel element configuration may include the number of resource particles in each enhanced control channel unit and the number of enhanced control channel elements in each physical resource block pair, and the like; and the enhancement The control channel unit configuration is classified into a plurality of categories and the like corresponding to different system configurations of the communication system, respectively.
  • the system configuration may include the number of orthogonal frequency division multiplexing symbols and the number of reference signal ports carried by the physical downlink control channel.
  • the configuration class determining means 801 can determine the class of the enhanced control channel unit configuration based on the number of resource particles available for carrying the enhanced physical downlink control channel in one physical resource block pair.
  • the enhanced control channel unit configuration can be classified into four categories respectively corresponding to different system configurations of the communication system. For example, the four types described above with reference to Table 3 or Table 4 are not repeated here.
  • the transmitting means 803 is for notifying information on the class of the enhanced control channel unit configuration determined by the determining means 801 to the terminal node in the communication system.
  • the transmitting device 803 can configure the determined enhanced control channel unit configuration.
  • the information of the class is encapsulated in 2-bit signaling (such as the first signaling), and the first signaling is sent to the terminal node.
  • the first signaling may be an extension of existing PDCCH signaling, or may use ePDCCH signaling or ePCFICH signaling.
  • the first signaling can be transmitted using the blank RE of the ePDCCH, which is not repeated here.
  • the device 800 may further include mapping mode determining means 805.
  • the mapping mode determining means 805 can determine the manner in which the enhanced resource channel elements are mapped in the physical resource block pair using the method described above with reference to Figures 6-7. For example, multiple enhanced channel control units in a physical resource block pair may be consecutively mapped to a plurality of resource particles of the physical resource block pair in a diagonal arrangement manner (as shown in FIG. 7); for example, physical resource block alignment Unoccupied resource particles can be evenly mapped after each enhanced channel control unit and will not be repeated here.
  • the transmitting device 803 can transmit information about the mapping mode to the terminal node.
  • the transmitting device 803 can transmit the information in any suitable manner and will not be described in detail herein.
  • the communication device 900 is configured in a terminal node of a communication system. As shown in FIG. 9, the communication device 900 includes a receiving device 901 and a processing device 903.
  • the communication device 900 can employ the method described above with reference to Figures 1-7.
  • receiving device 901 can receive information from the base station regarding the class of enhanced control channel element configuration.
  • the enhanced control channel unit configuration may include the number of resource particles in each enhanced control channel unit and the number of enhanced control channel elements in each physical resource block pair, and the like, and the enhanced control channel unit configurations are classified into separate Multiple categories corresponding to different system configurations of the communication system are not repeated here.
  • Processing device 903 can be operative to perform enhanced control channel unit demodulation in accordance with the type of enhanced control channel unit configuration. Specifically, after obtaining the information about the category of the eCCE configuration from the base station, the processing device 903 may query the configuration information corresponding to the category in the pre-stored information about the multiple eCCE configurations according to the category, and according to the configuration, according to the configuration. Information for demodulation of eCCE.
  • control channel unit configuration may be classified into four categories (for example, as shown in Table 3 or Table 4 above, when the DMRS adopts 4 ports, it is classified into types 1-4; or, when When DMRS uses 2 ports, it is divided into types 5-8).
  • the receiving device 901 may receive the first signaling, and The processing device 903 parses the first signaling to obtain the information indicating the configuration type of the enhanced control channel unit, thereby performing enhanced channel element demodulation.
  • the terminal node may obtain information about the eCCE configuration category through a Physical Control Format Indication Channel (PCFICH).
  • PCFICH Physical Control Format Indication Channel
  • the receiving device 901 can receive physical control format indication channel information.
  • the processing device 903 may calculate the number of resource particles that can be used to carry the enhanced physical downlink control channel according to the physical control format indication channel information, and obtain the enhanced control channel unit configuration by querying a pre-stored enhanced control channel unit configuration table. Category.
  • the receiving device 901 can also receive information from the base station regarding the manner in which the enhanced control channel elements are mapped in the pair of physical resource blocks.
  • the processing device 903 may follow The plurality of resource particles in the pair of physical resource blocks are successively demodulated in a diagonally aligned manner to obtain respective enhanced channel control units.
  • unoccupied resource particles in a physical resource block pair may be uniformly mapped after each enhanced channel control unit.
  • the processing device 903 completes demodulation for each of the enhanced channel control units, the unoccupied resource particles are vacated without demodulation.
  • unoccupied resource particles in a physical resource block pair may be uniformly mapped before each enhanced channel control unit. In this case, before the processing device 903 demodulates each of the enhanced channel control units, the unoccupied resource particles are skipped without demodulation.
  • the enhanced physical downlink control channel may be mapped to a physical resource block pair in a centralized manner, or may be mapped to multiple physical resource block pairs in a distributed manner. Accordingly, in the above centralized manner, the processing device 903 can collectively perform demodulation of the enhanced control channel unit for one physical resource block pair to obtain an enhanced physical downlink control channel. In the above distributed manner, the processing device 903 can perform demodulation of the enhanced control unit on the plurality of physical resource block pairs to obtain an enhanced physical downlink control channel.
  • a wireless communication system comprising a base station and a terminal node
  • the base station comprises a communication device (such as 800) configured on the base station side as described above
  • the terminal node Including the communication device (such as 900) configured on the terminal node side as described above
  • the various steps of the above method, as well as the various constituent modules and/or devices of the above-described devices, may be implemented as software, firmware, hardware, or a combination thereof.
  • the various components, units and subunits of the above apparatus may be configured by software, hardware or a combination thereof.
  • the specific means or manner in which the configuration can be used is well known to those skilled in the art and will not be described again.
  • Storage media includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and the like.

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Abstract

公开了无线通信系统中的通信方法和设备。一种通信方法包括:由通信系统中的基站根据所述通信系统的当前系统配置来确定增强物理下行控制信道中的增强控制信道单元配置的类别,其中,所述增强控制信道单元配置包括每个增强控制信道单元中资源粒子的个数及每个物理资源块对中增强控制信道单元的个数,并且其中,所述增强控制信道单元配置被分类成分别与通信系统的不同系统配置对应的多个类别;以及将有关所确定的增强控制信道单元配置的类别的信息通知到所述通信系统中的终端节点。

Description

无线通信系统中的通信方法和设备
技术领域
[01] 本公开涉及无线通信领域, 具体地, 涉及用于例如通用移动通信 系统(UMTS )长期演进的后续演进(LTE-A ) 中的通信方法、 通信 设备以及包括这种通信设备的无线通信系统。
背景技术
[02] 通用移动通信系统 ( Universal Mobile Telecommunication System, UMTS )技术的长期演进( Long Term Evolution, LTE )是 几年来启动的最大 新技术研发项目。这项技术可以被看成是"准 4G 技术"。 LTE-A ( LTE-Advanced )是 LTE的后续演进, 3GPP在 2008 年完成了 LTE-A的技术需求报告, 提出了 LTE-A的最小需求, 即下 行峰值速率 lGbps,上行峰值速率 500Mbps,上下行峰值频谱利用率 分别达到 15Mbps/Hz和 30Mbps/Hz。 为了满足 4G技术的各种需求 指标, 3GPP针对 LTE-A提出了几个关键技术, 包括载波聚合、协作 多点发送和接收、 接力传输和多天线增强等。
[03] 物理下行控制信道 ( Physical Downlink Control Channel, PDCCH )承载下行控制信息 (Downlink Control Information, DCI ), 包含一个或多个用户设备 ( User Equipment, UE )上的资源分配信息 及其他控制信息。 在 LTE 中, 上下行资源调度信息都是由 PDCCH 来承载的。 一般来说, 在一个子帧内, 可以有多个 PDCCH。 用户需 要首先解调 PDCCH中的 DCI,然后才能够在相应的资源位置上解调 属于用户 自己的物理下行共享信道 ( Physical Downlink Share Channel, PDSCH: 包括广播消息、 寻呼、 UE的数据等)。
[04] 目前, 针对 LTE-A中的载波聚合、 协作多点发送和接收、 接力 传输和多天线增强等关键技术的调度需求,在 3GPP标准化中提出了 增强物理下行控制信道( Enhanced PDCCH, ePDCCH ), 用以增大控 制信息的容量, 并可支持波束赋形、 分集和小区间干扰删除等技术。 鉴于需要与之前版本 10 (如 R10 )的 PDCCH共存, ePDCCH将不 占用之前 PDCCH的区域, 而是与 PDSCH共享数据域的资源。 基于 此, 需要对 ePDCCH的配置重新进行设计。
发明内容
[05] 针对以上问题, 开的一些实施例提供了一种通信方法、设备 和系统, 其中采用的增强物理下行控制信道(ePDCCH )的配置方案 能够实现对下行资源的有效利用, 提升传输性能并能够很好地兼容
R10 ( 3GPP Release 10 ) 中的 PDCCH。
[06] 在下文中给出关于本公开的简要概述,以便提供关于本公开的某 些方面的基本理解。应当理解, 这个概述并不是关于本公开的穷举性 概述。 它并不是意图确定本公开的关键或重要部分, 也不是意图限定 开的范围。 其目的仅仅是以简化的形式给出某些概念, 以此作为 稍后论述的更详细描述的前序。
[07] 才艮据本公开的一个方面,提供了一种用于无线通信系统中的通信 方法。 该通信方法可包括: 由通信系统中的基站根据所述通信系统的 当前系统配置来确定增强物理下行控制信道中的增强控制信道单元 配置的类别, 其中, 所述增强控制信道单元配置包括每个增强控制信 道单元中资源粒子的个数及每个物理资源块对中增强控制信道单元 的个数, 并且其中, 所述增强控制信道单元配置被分类成分别与通信 系统的不同系统配置对应的多个类别; 以及将有关所确定的增强控制 信道单元配置的类别的信息通知到所述通信系统中的终端节点。
[08] 才艮据 开的另一方面,还提供了一种用于无线通信系统中的通 信方法。 该通信方法可包括: 由通信系统中的终端节点接收来自基站 的有关增强控制信道单元配置的类别的信息,所述增强控制信道单元 配置包括每个增强控制信道单元中资源粒子的个数及每个物理资源 块对中增强控制信道单元的个数, 并且其中, 所述增强控制信道单元 配置被分类成分别与通信系统的不同系统配置对应的多个类别; 以及 根据所述增强控制信道单元配置的类别进行增强控制信道单元解调。
[09] 才艮据 开的另一方面,还提供了一种用于无线通信系统中的通 信设备。 该通信设备配置于通信系统的基站中并且包括: 配置类别确 定装置,用于根据所述通信系统的当前系统配置来确定增强物理下行 控制信道中的增强控制信道单元配置的类别, 其中, 所述增强控制信 道单元配置包括每个增强控制信道单元中资源粒子的个数及每个物 理资源块对中增强控制信道单元的个数, 并且其中, 所述增强控制信 道单元配置被分类成分别与通信系统的不同系统配置对应的多个类 别; 以及发送装置, 用于将有关所确定的增强控制信道单元配置的类 别的信息通知到所述通信系统中的终端节点。
[10] 才艮据 开的另一方面,还提供了一种用于无线通信系统中的通 信设备。 该通信设备可配置于通信系统的终端节点中并且包括: 接收 装置, 用于接收来自基站的有关增强控制信道单元配置的类别的信 息,所述增强控制信道单元配置包括每个增强控制信道单元中资源粒 子的个数及每个物理资源块对中增强控制信道单元的个数, 并且其 中,所述增强控制信道单元配置被分类成分别与通信系统的不同系统 配置对应的多个类别; 以及处理装置, 用于才艮据所述增强控制信道单 元配置的类别进行增强控制信道单元解调。
[11] 才艮据 开的另一方面,还提供了一种用于无线通信系统中的通 信方法, 该方法可包括: 由通信系统中的基站根据所 信系统的当 前系统配置来确定增强物理下行控制信道中的增强控制信道单元配 置的类别, 其中, 所述增强控制信道单元配置包括每个增强控制信道 单元中资源粒子的个数及每个物理资源块对中增强控制信道单元的 个数, 并且其中, 所述增强控制信道单元配置被分类成分别与通信系 统的不同系统配置对应的多个类别; 由所述基站将有关所确定的增强 控制信道单元配置的类别的信息通知到所述通信系统中的终端节点; 由所述终端节点接收来自所述基站的有关增强控制信道单元配置的 类别的信息; 以及由所述终端节点才艮据所述增强控制信道单元配置的 类别进行增强控制信道单元解调。
[12] 才艮据本公开的另一方面, 还提供了一种无线通信系统, 该系统包 括基站和终端节点。 所述基站可包括: 配置类别确定装置, 用于根据 所述通信系统的当前系统配置来确定增强物理下行控制信道中的增 强控制信道单元配置的类别, 其中, 所述增强控制信道单元配置包括 每个增强控制信道单元中资源粒子的个数及每个物理资源块对中增 强控制信道单元的个数, 并且其中, 所述增强控制信道单元配置被分 类成分别与通信系统的不同系统配置对应的多个类别; ½送装置, 用于将有关所确定的增强控制信道单元配置的类别的信息通知到所 述通信系统中的终端节点。 所述终端节点可包括: 接收装置, 用于接 收来自所述基站的有关增强控制信道单元配置的类别的信息;及处理 装置,用于根据所述增强控制信道单元配置的类别进行增强控制信道 单元解调。
[13] 另外, 本公开还提供用于实现上述方法的计算机程序。
[14] 此外, 本公开也提供至少计算机可读介质形式的计算机程序产 品, 其上记录有用于实现上述方法的计算机程序代码。
附图说明
[15] 参照下面结合附图对本公开实施例的说明,会更加容易地理解本 公开的以上和其它目的、 特点和优点。 附图中的部件不是成比例绘制 的, 而只是为了示出 开的原理。 在附图中, 相同的或类似的技术 特征或部件将采用相同或类似的附图标记来表示。
[16] 图 1 是示出根据 开一实施例用于无线通信系统中的通信方 法的示意性流程图;
[17] 图 2是示出动态选择与当前系统配置相适应的增强控制信道单 元(eCCE )配置的通信方法的一个具体示例的示意性流程图;
[18] 图 3 是示出根据 开一实施例用于无线通信系统中的通信方 法的示意性流程图;
[19] 图 4是示出终端节点接收 eCCE配置信息的一个具体示例的示意 性流程图;
[20] 图 5 是示出了一个物理资源块对在一种系统配置下的资源占用 情况的一个示例的示意图;
[21] 图 6 示出了根据本公开的另一实施例的通信方法的示意性流程 图;
[22] 图 7(A)-(D)是示出 eCCE映射方式的一个具体示例的示意图;
[23] 图 8是示出根据一个实施例的用于无线电系统中的通信设备的 结构的示意性框图; 以及
[24] 图 9是示出根据另一实施例的用于无线电系统中的通信设备的 结构的示意性框图。 具体实施方式
[25] 下面参照附图来说明本公开的实施例。在本公开的一个附图或一 种实施方式中描述的元素和特征可以与一个或更多个其它附图或实 施方式中示出的元素和特征相结合。 应当注意, 为了清楚的目的, 附 图和说明中省略了与本公开无关的、本领域普通技术人员已知的部件 和处理的表示和描述。
[26] 本公开的一些实施例提供了无线通信系统中的通信方法和设备 以及采用这种方法或者使用这种设备的通信系统,其中采用的增强物 理下行控制信道的配置方案 (例如包括增强控制信道单元的大小和 / 或增强控制信道单元在资源块中的复用方式和 /或空白资源粒子 ( Resource Element, RE )的映射解调方案等), 能够实现对下行资 源的有效利用, 提升传输性能并能够艮好地兼容 R 10中的 PDCCH。
[27] 图 1 是示出了根据 H —实施例的用于无线通信系统中的通 信方法的流程图。 图 1所示的方法在通信系统中的基站侧来实施。
[28] 如图 1所示, 该方法包括步骤 102和 104。
[29] 在步骤 102中, 由通信系统中的基站根据该通信系统的当前系统 配置来确定 ePDCCH 中的增强控制信道单元 (enhanced Control Channel Element, eCCE )配置的类别。
[30] 一个 ePDCCH可承载一个或更多个 eCCE。 eCCE的大小, 即 eCCE中的资源粒子(如 Resource Element, RE )的个数, 直接影响 到 ePDCCH的容量、搜索空间的设置以及链路级性能等。因此, eCCE 的大小是 ePDCCH 配置的一个重要指标。 在本实施例中, 所述的 ePDCCH中的 eCCE配置可以包括每个 eCCE的大小(即每个 eCCE 中资源粒子的个数)及每个物理资源块对 ( Physical Resource Block pair , PRB pair ) 中 eCCE的个数等。
[31] 在本实施例中, ePDCCH 中的 eCCE配置被分类成分别与通信 系统的不同系统配置对应的多个类别。换言之, 通信系统的多种系统 配置可以被分成多种类别, 相应地, 可以定义与之对应的不同类别的 ePDCCH中的 eCCE配置,即每种系统配置可对应相应类别的 eCCE 配置。 这样, 基站可以根据通信系统的当前系统配置来动态地选择对 应类别的 eCCE配置(步骤 102 )。
[32] 然后, 在步骤 104中, 基站将有关所确定的增强控制信道单元配 置的类别的信息通知到通信系统中的终端节点。
[33] 注意, 在本公开中, 所述的终端节点是指通信系统中的用户节点 UE, 例如移动终端等。
[34] 基站可以采用任何适当的方式来发送所述有关所确定的增强控 制信道单元配置的类别的信息。作为一个示例, 可以采用已有的物理 下行控制信道信令(如 R10 中的 legacy PDCCH signaling (已有 PDCCH 信令)) 的扩展来发送所述信息, 即将所述信息封装于扩展 的物理下行控制信道信令中并发送到终端节点。这种方式可以很好地 兼容原来的 R10版本, 利用原有的控制资源。作为另一示例,还可以 定义一个增强物理下行控制信道信令 (ePDCCH signaling), 将所述信 息封装于新定义的物理下行控制信道信令中并发送到终端节点。这种 方式简单可行, 只需要增加新的信令即可, 可以占用一些空白资源就 可以实现。作为又一示例, 可以定义一个增强物理控制格式指示信道 信令 ( enhanced Physical Control Format Indication Channel signaling , ePCFICH signaling ) , 将所述信息封装于新定义的 ePCFICH信令中并发送到终端节点。这种方式可以将 ePDCCH与之 前的 PDCCH很好的区分开, 避免了使用上的混淆。 应理解, 可以采 物理控制格式指示信道信令, 开不局限于任何具体的格式, 这里 也不作详细描述。
[35] 在上述通信方法中, ePDCCH 中的 eCCE配置被分类成分别与 通信系统的不同类型的系统配置对应的多个类别,而基站可以根据通 信系统的当前系统配置来选择与之对应的 eCCE配置。 这样, 可以降 低资源浪费 (即减少 "空白 RE" 的数目), 还可以改善 ePDCCH的 链路自适应性能并减少可能的信令传输开销。
[36] 作为示例,通信系统的系统配置可以包括物理下行控制信道承载 的正交频分复用( OFDM )符号的个数和参考信号端口的个数等信息。 PDCCH承载的 OFDM符号的个数以及参考信号端口的个数均会影 响 ePDCCH的可用 RE的个数。 因此, 可以才艮据这些配置信息来确 定增强控制信道单元配置的类别。作为一个具体示例,在步骤 102中, 基站可以根据一个物理资源块对中可用于承载增强物理下行控制信 道的资源粒子的个数(或者根据一个物理资源块对中可用于承载增强 物理下行控制信道的资源粒子的个数和参考信号端口的个数)来确定 增强控制信道单元配置的类别。
[37] 图 5示出了一个 PRB对在一种系统配置下的占用情况, 其中, 一个方块代表一个 RE。 PDCCH占用 2个 OFDM符号, 公共参考信 号 CRS采用 4端口, 解调参考信号 DMRS采用 4端口, 剩下的空白 RE可用于承载 eCCE„
[38] 表 1示出了在解调参考信号 DMRS设定为采用 4端口, PDCCH 占用不同个数的 OFDM符号以及 CRS采用不同端口数目的不同系统 配置下一个 PRB对中可用 RE的个数的示例:
表 1
Figure imgf000009_0001
[39] 表 2示出了在解调参考信号 DMRS设定为采用 2端口, PDCCH 占用不同个数的 OFDM符号以及 CRS采用不同端口数目的不同系统 配置下一个 PRB对中可用 RE的个数的示例:
表 2
Figure imgf000009_0002
[40] 作为一个具体示例, 根据 PDCCH承载的 OFDM符号的个数和 参考信号端口的个数,所述增强控制信道单元配置可被分类成对应的
4个类别。在这种情况下,基站在确定了与当前系统配置对应的 eCCE 配置的类别之后,可以将有关该类别的信息通过一个 2比特的信 称 为第一信令)中, 并将该第一信令发送给终端节点。 这里, 如上文所 一信令可以是对已有物理下行控制信道信令的扩展, 或者可
Figure imgf000010_0001
[41] 下面描述根据表 1 的系统配置来确定 eCCE配置的一个具体示 例。 具体地, 可以根据可用于承载增强物理下行控制信道的资源粒子 的个数, 将 ePDCCH中的 eCCE配置分为以下 4类:
类型 1: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 144-128之间时, 每个 eCCE中可包括 32个 RE, 且每个物理资 源块对中可承载 4个 eCCE;
类型 2: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 126-120之间时, 每个 eCCE中可包括 30个 RE, 且每个物理资 源块对中可承载 4个 eCCE;
类型 3: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 114-108之间时, 每个 eCCE中可包括 36个 RE, 且每个物理资 源块对中可承载 3个 eCCE;
类型 4: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 104-92之间时, 每个 eCCE中可包括 30个 RE, 且每个物理资 源块对中可承载 3个 eCCE。
[42] 下面描述根据表 2的系统配置来确定 eCCE配置的另一个具体示 例。 具体地, 可以根据可用于承载增强物理下行控制信道的资源粒子 的个数, 将 ePDCCH中的 eCCE配置分为以下 4类:
类型 5: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 136-152之间时, 每个 eCCE中可包括 34个 RE, 且每个物理资 源块对中可承载 4个 eCCE;
类型 6: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 128-134之间时, 每个 eCCE中可包括 32个 RE, 且每个物理资 源块对中可承载 4个 eCCE; 类型 7: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 116-122之间时, 每个 eCCE中可包括 38个 RE, 且每个物理资 源块对中可承载 3个 eCCE;
类型 8: 当可用于承载增强物理下行控制信道的资源粒子的个 数在 100-112之间时, 每个 eCCE中可包括 33个 RE, 且每个物理资 源块对中可承载 3个 eCCE。
[43] 表 3、 4分别示出了根据表 1、 表 2的系统配置来确定 eCCE配 置的上述 4种类型中可用 RE个数与 eCCE大小和 eCCE个数对应关 系。
表 3
Figure imgf000011_0001
[44] 图 2示出了利用表 3所示的 4种类型的 eCCE配置来动态选择与 当前系统配置相适应的 eCCE配置的通信方法的一个具体示例。在步 骤 202-1中, 判断可用于承载增强物理下行控制信道的资源粒子的个 fci否在 144-128之间, 若是, 则在步骤 202-2中选择上述类型 1的 eCCE配置; 否则, 处理进行到步骤 202-3。 在步骤 202-3中, 判断可 用于承载增强物理下行控制信道的资源粒子的个数是否在 126-120之 间, 若是, 则在步骤 202-4中选择上述类型 2的 eCCE配置; 否则, 处理进行到步骤 202-5。 在步骤 202-5中, 判断可用于承载增强物理 下行控制信道的资源粒子的个数是否在 114-108之间, 若是, 则在步 骤 202-6中选择上述类型 3的 eCCE配置; 否则, 则在步骤 202-7中 选择上述类型 4的 eCCE配置。 然后, 在步骤 204-1中, 将有关所选 eCCE配置的类型信息封装于一个 2bit的信令(作为具体示例, 在该 信令中, 00可表示类型 1 , 01可表示类型 2, 10可表示类型 3, 11 可表示类型 4等, 这里不作详述) 中, 并在步骤 204-2中, 向终端节 点发送该信令。
[45] 由于在 PDCCH中一个控制信道单元(CCE )的大小为 36 (即 在 PDCCH中,一个 CCE包括 36个 RE ),因此,为了考虑到与 PDCCH 的兼容, 在 ePDCCH中, 可以使得一个 eCCE中 RE的个数在 30-38 (如 30、 32、 36或 38 ) 中变化。 这样可以保证每个 eCCE中承载的 下行控制信息( DCI )不会太少也不会过多。在以上具体示例中, eCCE 配置被分为四类, 采用这种方法, 下行资源的浪费率较低(经计算, 大约在 4%左右,而将 eCCE配置分成两类时的资源浪费率为 10%左 右)。 另一方面, 虽然分类数越多, 资源浪费率越低, 但随着分类数 的增加, 资源利用率的增益变得艮小, 因此, 如果 eCCE配置的类别 过多 , 将使得 ePDCCH的通过 eCCE聚合的链路自适应过程变得复 杂,并且当基站需要通知终端节点有关当前 eCCE配置的信息时所需 要的信令开销也会随着 eCCE配置类别的增加而增多。在上述实施例 中, 由于采用了 4种类型的 eCCE配置,第一信令仅需 2比特。因此, 采用图 3所示的通信方法,可以在资源浪费率和信令开销之间得到较 好的平衡。
[46] 作为具体实施例,不同系统配置与 eCCE配置类型的对应关系可 以预先存储于基站(如存储于基站的存储装置中)中。 基站可以在获 得当前系统配置时, 根据所存储的对应关系来确定相应的 eCCE 配 置, 并将有关其类别的信息发送给终端节点。有关 eCCE配置的各种 类型的信息可以预先存储于终端节点(如存储于终端节点的存储装置 中)中。终端节点在获得来自基站的有关 eCCE配置的类别的信息后, 可以根据其类别来所存储的信息中查询与该类别对应的信息。
[47] 图 3是示出了与图 1所示的方法对应的在终端节点侧接收有关增 强控制信道单元配置信息的通信方法的示意性流程图。 如图 3所示, 该方法, 可以包括步骤 302和 304。
[48] 在步骤 302中,终端节点接收来自基站的有关增强控制信道单元 配置的类别的信息。
[49] 与上文所述的实施例相似,这里所述的增强控制信道单元配置包 括每个增强控制信道单元中资源粒子的个数及每个物理资源块对中 增强控制信道单元的个数等。 另外, 所述增强控制信道单元配置被分 类成分别与通信系统的不同系统配置对应的多个类别。 这里不作详 述。
[50] 在步骤 304中,终端节点根据所述增强控制信道单元配置的类别 进行增强控制信道单元解调。 具体地, 终端节点在获得来自基站的有 关 eCCE配置的类别的信息后, 可以根据其类别, 在预先存储的有关 多种 eCCE配置的信息中查询与该类别对应的配置信息,并根据该配 置信息来进行 eCCE的解调。
[51] 作为一个具体示例, eCCE配置可被分类为 4类, 例如, 上文表 3或表 4中示出的 4种类型。 这样, 基站可以通过 2比特的信令(如 第一信令)来发送用于指示与当前系统配置对应的 eCCE配置的类别 的信息(如图 2的步骤 204-1和 204-2所示)。 相应地, 在步骤 302 中,终端节点可以通过接收封装于 2比特的用于指示增强控制信道单 元配置类别的信令(如第一信令)来得到有关信息。
[52] 作为一个示例, 终端节点可以通过物理控制格式指示信道 ( Physical control format indication channel, PCFICH )来获得有关 eCCE配置类别的信息。此方法可以很好地继承原有 R10版本中的信 道特征并与之很好的兼容,不需要新加入其他的信令信息;另一方面, 终端的计算也并不复杂。 PCFICH是指专门用于指示 PDCCH所占用 OFDM符号个数的物理格式指示信道。 PCFICH放置在每个子帧的 第 1个 OFDM符号中, 大小为 2bit, 实际上划分了每个子帧中控制 信令区域和数据区域的边界。图 4示出了利用 PCFICH来接收 eCCE 配置信息的一个具体示例。 如图 4所示, 在步骤 402-1中, 终端节点 接收物理控制格式指示信道信息。 具体地, 终端节点通过解调 PCFICH信息来获得当前系统配置中 PDCCH传输所占用的 OFDM 符号个数。 然后, 在步骤 402-2中, 根据该物理控制格式指示信道信 息来计算可用于承载增强物理下行控制信道的资源粒子的个数。具体 地, 终端节点可以利用所述 PCFICH信息通过系统信息来获得 CRS 端口数, 然后计算当前可用于承载 ePDCCH的 RE的个数。 在步骤 402-3中,终端节点通过查询预先存储的增强控制信道单元配置表(如 表 2所示的信息)来获取 eCCE配置的类别。
[53] 在上文中描述了用于无线通信系统中的通信方法,其中根据不同 系统配置来动态确定与之对应的 eCCE配置类别,并且在各种类别的 eCCE配置中定义了相应的 eCCE大小等信息。 图 6示出了才艮据本公 开的另一实施例的通信方法, 其中, 基站还进一步确定物理资源块对 中增强控制信道单元的映射方式。
[54] 具体地, 如图 6所示, 在步骤 606中, 基站确定物理资源块对中 增强控制信道单元的映射方式。 在所确定的映射方式中, 可以使得每 个物理资源块对中的多个增强信道控制单元以对角 (diagonal )排列 的方式连续映射到该物理资源块对的多个资源粒子中。所谓的对角排 列方式是指, 在每一个 PRB 对中, 将同一 eCCE 连续地、 集中地 ( localized )按对角排列映射于可用 RE中。 这样使得实际操作中映 射规律简单, 即使得实际的映射算法更容易实现。 而且, 上述对角排 列的映射方式实际上是采用时分复用和频分复用相结合的复用方法 将多个 eCCE复用在一个 PRB对中, 采用时分复用的方式可以减少 编码延时, 采用频分复用的方式可以实现功率平衡, 采用二者结合的 方式则可以综合时分复用和频分复用的上述优点。
[55] 图 7(A)-(D)是分别示出了在不同类型的 eCCE配置下以对角排列 的方式连续映射 eCCE 的示意图。 其中, 图 7(A)示出了采用类型 1 的 eCCE配置时的映射示例;图 7(B)示出了采用类型 2的 eCCE配置 时的映射示例;图 7(C)示出了采用类型 3的 eCCE配置时的映射示例; 图 7(D)示出了采用类型 4的 eCCE配置时的映射示例。然后,在步骤 608中, 基站将有关映射方式的信息通知到终端节点。 应注意, 上述 步骤 608是可选的。 通常情况下, 基站不需要向终端节点发送有关映 射方式的信息,只要预先与终端节点约定好各种类型 eCCE配置下所 使用的映射方式既可。终端节点从基站获得有关 eCCE配置的类别的 信息之后, 可以根据与该类别对应的、预先约定好的映射方式进行解 调。
[56] 作为具体示例,在每个物理资源块对中的多个增强信道控制单元 以对角排列的方式连续映射到该物理资源块对的多个资源粒子的情 况下,终端节点可以按照对角排列的方式连续解调物理资源块对中的 多个资源粒子以获得各个增强信道控制单元。 [57] 作为示例,物理资源块对中未被占用的资源粒子可被均匀映射于 每一增强信道控制单元之后。 在这种情况下, 终端节点完成对每一个 增强信道控制单元的解调后, 空出未被占用的资源粒子不进行解调。
[58] 下面描述空白 RE的映射以及解調的一个具体示例。
[59] 首先, 基站站端获得当前系统配置, 并才艮据当前系统配置计算得 到可用于 ePDCCH传输的 RE个数 N。 假设在与当前系统配置对应 类型的 eCCE配置下, 每个 eCCE的大小为 n且每对 PRB中承载的 eCCE的个数为 x, 则基站可通过下式( 1 )来计算得到每个 eCCE映 射后需要空出的 RE个数 Y:
Y - [(N - n * x)/x」 ( i )
[60] 上式中, 符号 "1 』"表示向下取整如果可以整除, 则每个 eCCE 之后的空白 RE的个数就是均等的, 否则就将最后多余的 RE映射到 最后一个 eCCE之后。
[61] 然后, 基站通过计算得到的 Y 的数值, 在每映射 n 个 RE 的 ePDCCH信息后就空出 Y个 RE。通常,基站可以预先与终端节点约 定好有关映射图样的信息。 可选地, 基站可以将有关映射图样的信息 发送到终端节点。
[62] 相应地, 在终端节点端, 终端节点获取当前系统配置下的 eCCE 配置信息(如采用上文中的方法, 这里不再重复)。 具体地, 获得每 一 eCCE的大小 n和每对 PRB中承载的 eCCE的个数 x。
[63] 然后, 终端节点获取每个 eCCE解调后需用空出的 RE个数 Y。 作为一个示例,可以由基站通过信令将 Υ通知到终端节点。作为另一 示例, 终端节点可以采用下式(2 )来计算得到 Υ。
[64] 终端节点可以通过解调系统信令和原来的控制信道信息来获得 当前系统配置, 并根据当前系统配置 (例如表 1 ) 来得到可用于 ePDCCH传输的 RE个数 N。
[65] 之后, 终端节点通过下式(2 )来计算每个 eCCE解调后需要空 出的 RE个数 Y:
Y = (N - n * x)/x ( 2 ) [66] 根据计算得到的 Y值, 终端节点在每解调 n个 RE的 ePDCCH 信息后就空出 Y个 RE不进行解调。
[67] 作为另一示例,物理资源块对中未被占用的资源粒子可被均匀映 射于每一增强信道控制单元之前。 在这种情况下, 终端节点对每一个 增强信道控制单元进行解调前,先跳过未被占用的资源粒子不进行解 调。 具体的步骤与上述示例类似, 在此不再赘述。
[68] 作为一个具体示例,基站还可以利用增强物理下行控制信道的未 占用的资源粒子(空白 RE )将包含用于指示与当前系统配置对应的 eCCE配置的类别的信息的信令(如第一信令)发送到终端节点。 例 如,在上述示例中物理资源块对中未被占用的资源粒子可被均匀映射 于每一增强信道控制单元之前, 在这种情况下, 可利用位于 eCCE之 前的空白 RE来承载第一信令。 终端节点首先解调第一信令, 再解调 eCCE。 或者, 第一信令可放置在其他的空白 RE 中, 终端节点接收 基站发送的有关映射图样的信息(或者根据与基站预先约定的映射图 样的信息), 根据该信息首先解调得到第一信令, 进而解调 eCCE。 利用空白 RE承载用于指示与当前系统配置对应的 eCCE配置的类别 的信息的信令, 不需要占用新的资源, 能够更好地利用原本可能会浪 费的资源。
[69] 作为一个具体实施例,每个物理资源块对中的多个增强信道控制 单元以对角排列的方式连续映射到该物理资源块对的多个资源粒子 中的方案下,增强物理下行控制信道可以用集中的方式映射到一个物 理资源块对中, 或者可以用分布的方式映射到多个物理资源块对中。 相应地, 在上述集中的方式下, 终端节点可以集中对一个物理资源块 对进行增强控制信道单元的解调以获得一个增强物理下行控制信道。 而在上述分布的方式下,终端节点可以对多个物理资源块对进行增强 控制单元的解调以获得一个增强物理下行控制信道。
[70] 下文描述根据一些实施例的用于无线通信系统中的通信设备。
[71] 图 8是示出了根据一实施例的用于无线通信系统中的通信设备 的结构的示意性框图。 该通信设备 800可配置于通信系统的基站中。
[72] 如图 8所示,该通信设备 800可包括配置类别确定装置 801和发 送装置 803。
[73] 通信设备 800可以采用上文参考图 1-7描述的方法。 例如, 配置 类别确定装置 801可根据通信系统的当前系统配置来确定增强物理下 行控制信道中的增强控制信道单元配置的类别。
[74] 如上文所述,所述增强控制信道单元配置可包括每个增强控制信 道单元中资源粒子的个数及每个物理资源块对中增强控制信道单元 的个数等;并且所述增强控制信道单元配置被分类成分别与通信系统 的不同系统配置对应的多个类别等。作为具体示例, 所述系统配置可 包括物理下行控制信道承载的正交频分复用符号的个数和参考信号 端口的个数。配置类别确定装置 801可根据一个物理资源块对中可用 于承载增强物理下行控制信道的资源粒子的个数来确定增强控制信 道单元配置的类别,
[75] 作为具体示例,所述增强控制信道单元配置可被分类成分别与通 信系统的不同系统配置对应的 4个类别。 例如, 上文参考表 3或表 4 所述的 4种类型, 这里不再重复。
[76] 发送装置 803用于将有关确定装置 801所确定的增强控制信道单 元配置的类别的信息通知到通信系统中的终端节点。作为一个具体示 例, 例如, 如果所述增强控制信道单元配置可被分类成分别与通信系 统的不同系统配置对应的 4个类别,发送装置 803可以将所述有关所 确定的增强控制信道单元配置的类别的信息封装于 2比特的信令(如 第一信令)中, 并将该第一信令发送到终端节点。 如上所述, 第一信 令可以是已有 PDCCH 信令的扩展, 也可以采用 ePDCCH 信令或 ePCFICH信令。 例如, 第一信令可以利用 ePDCCH的空白 RE来传 输, 这里不再重复。
[77] 可选地, 设备 800还可包括映射方式确定装置 805。 映射方式确 定装置 805可以采用上文参考图 6-7所述的方法来确定物理资源块对 中增强控制信道单元的映射方式。 例如, 物理资源块对中的多个增强 信道控制单元可以对角排列的方式连续映射到该物理资源块对的多 个资源粒子中 (如图 7所示); 又如, 物理资源块对中未被占用的资 源粒子可被均匀映射于每一增强信道控制单元之后, 这里不再重复。
[78] 发送装置 803可以将有关映射方式的信息发送到终端节点。发送 装置 803可以采用任何适当的方式来发送该信息, 这里不作详述。
[79] 图 9 示出了根据一实施例的用于无线通信系统中的通信设备的 结构。 该通信设备 900配置于通信系统的终端节点中。 [80] 如图 9所示, 通信设备 900包括接收装置 901和处理装置 903。
[81] 例如, 通信设备 900可以采用上文参考图 1-7描述的方法。 具体 地,接收装置 901可以接收来自基站的有关增强控制信道单元配置的 类别的信息。 如上所述, 增强控制信道单元配置可包括每个增强控制 信道单元中资源粒子的个数及每个物理资源块对中增强控制信道单 元的个数等,并且增强控制信道单元配置被分类成分别与通信系统的 不同系统配置对应的多个类别, 这里不再重复。
[82] 处理装置 903 可用于根据所述增强控制信道单元配置的类别进 行增强控制信道单元解调。 具体地, 在获得来自基站的有关 eCCE配 置的类别的信息后, 处理装置 903可以根据其类别, 在预先存储的有 关多种 eCCE配置的信息中查询与该类别对应的配置信息,并根据该 配置信息来进行 eCCE的解调。
[83] 作为具体示例, 控制信道单元配置可被分为 4种类别(例如, 如 上文表 3或表 4所示的, 当 DMRS采用 4个端口时, 分为类型 1-4; 或者, 当 DMRS采用 2个端口时, 分为类型 5-8 )。 在这种情况下, 如果用于指示增强控制信道单元配置类别的信息被基站封装在 2比特 的信令(如第一信令)中, 则接收装置 901可以接收该第一信令, 并 由处理装置 903对该第一信令进行解析,从而得到所述于指示增强控 制信道单元配置类别的信息, 从而进行增强控制信道单元解调。
[84] 作为一个示例, 终端节点可以通过物理控制格式指示信道 ( Physical control format indication channel, PCFICH )来获得有关 eCCE配置类别的信息。 接收装置 901可以接收物理控制格式指示信 道信息。处理装置 903可以根据该物理控制格式指示信道信息来计算 可用于承载增强物理下行控制信道的资源粒子的个数,并通过查询预 先存储的增强控制信道单元配置表来获取所述增强控制信道单元配 置的类别。
[85] 作为具体实施例,接收装置 901还可以接收来自基站的有关物理 资源块对中增强控制信道单元的映射方式的信息。
[86] 作为具体示例,在每个物理资源块对中的多个增强信道控制单元 以对角排列的方式连续映射到该物理资源块对的多个资源粒子的情 况下,处理装置 903可以按照对角排列的方式连续解调物理资源块对 中的多个资源粒子以获得各个增强信道控制单元。 [87] 作为示例,物理资源块对中未被占用的资源粒子可被均匀映射于 每一增强信道控制单元之后。 在这种情况下, 处理装置 903完成对每 一个增强信道控制单元的解调后, 空出未被占用的资源粒子不进行解 调。作为另一示例, 物理资源块对中未被占用的资源粒子可被均匀映 射于每一增强信道控制单元之前。 在这种情况下, 处理装置 903对每 一个增强信道控制单元进行解调前,先跳过未被占用的资源粒子不进 行解调。
[88] 作为一个具体实施例,增强物理下行控制信道可以用集中的方式 映射到一个物理资源块对中,或者可以用分布的方式映射到多个物理 资源块对中。 相应地, 在上述集中的方式下, 处理装置 903可以集中 对一个物理资源块对进行增强控制信道单元的解调以获得一个增强 物理下行控制信道。 而在上述分布的方式下, 处理装置 903可以对多 个物理资源块对进行增强控制单元的解调以获得一个增强物理下行 控制信道。
[89] 根据一个实施例, 还提供了一种无线通信系统, 该系统包括基站 和终端节点,并且所述基站包括如上所述的配置于基站侧的通信设备 (如 800 ),所述终端节点包括如上所述的配置于终端节点侧的通信设 备(如 900 )„
[90] 应理解, 上述实施例和示例是示意性的, 而不是穷举性的, 本公 开不应被视为局限于任何具体的实施例或示例。 另夕卜, 在上述实施例 和示例中, 采用数字标记来表示方法的步骤或设备的模块。 本领域的 普通技术人员应理解,这些数字标记只是为了对这些步骤或模块作文 字上的区分, 而并非表示其顺序或任何其他限定。
[91] 作为一个示例,上述方法的各个步骤以及上述设备的各个组成模 块和 /或装置可以实施为软件、 固件、 硬件或其组合。 上述装置中各 个组成部件、单元和子单元可通过软件、硬件或其组合的方式进行配 置。 配置可使用的具体手段或方式为本领域技术人员所熟知, 在此不 再赘述。
[92] ^开还提出一种存储有机器可读取的指令代码的程序产品。所 述指令代码由机器读取并执行时,可执行上述根据本公开实施例的通 信方法。
[93] 相应地,用于承载上述存储有机器可读取的指令代码的程序产品 的存储介质也包括在本公开的公开中。所述存储介质包括但不限于软 盘、 光盘、 磁光盘、 存储卡、 存储棒等等。
[94] 在上面对本公开具体实施例的描述中,针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在一个或更多个其它实施方 式中使用, 与其它实施方式中的特征相组合, 或替代其它实施方式中 的特征。
[95] 应该强调, 术语"包括 /包含"在本文使用时指特征、 要素、 步骤 或组件的存在, 但并不排除一个或更多个其它特征、 要素、 步骤或组 件的存在或附加。
[96] 此外, 本公开的方法不限于按照说明书中描述的时间顺序来执 行, 也可以按照其他的时间顺序地、 并行地或独立地执行。 因此, 本 说明书中描述的方法的执行顺序不对本公开的技术范围构成限制。
[97] 尽管上面已经通过对本公开的具体实施例的描述对本公开进行 了披露, 但是, 应该理解, 本领域的技术人员可在所附权利要求的精 神和范围内设计对 开的各种修改、 改进或者等同物。 这些修改、 改进或者等同物也应当被认为包括在 开的保护范围内。

Claims

权利 要求 书
1. 一种用于无线通信系统中的通信方法, 包括:
由通信系统中的基站根据所述通信系统的当前系统配置来确定 增强物理下行控制信道中的增强控制信道单元配置的类别, 其中, 所 述增强控制信道单元配置包括每个增强控制信道单元中资源粒子的 个数及每个物理资源块对中增强控制信道单元的个数, 并且其中, 所 述增强控制信道单元配置被分类成分别与通信系统的不同系统配置 对应的多个类别; 以及
将有关所确定的增强控制信道单元配置的类别的信息通知到所 述通信系统中的终端节点。
2.根据权利要求 1所述的通信方法,其中,所述系统配置包括物 理下行控制信道承载的正交频分复用符号的个数和参考信号端口的 个数。
3.根据权利要求 1所述的通信方法,其中,所述增强控制信道单 元配置被分类成分别与通信系统的不同系统配置对应的 4个类别。
4.根据权利要求 3所述的通信方法,其中,将有关所确定的增强 控制信道单元配置的类别的信息通知到所述终端节点包括:将所述有 关所确定的增强控制信道单元配置的类别的信息封装于 2比特的第一 信令中并将该第一信令发送到所述终端节点。
5.根据权利要求 1-4中任一项所述的通信方法, 其中,根据当前 系统配置来确定增强物理下行控制信道中的增强控制信道单元配置 的类别包括:根据一个物理资源块对中可用于承载增强物理下行控制 信道的资源粒子的个数来确定增强控制信道单元配置的类别, 其中: 在第一类别中,每个增强控制信道单元包括 32或 34个资源粒子 且每个物理资源块对承载 4个增强控制信道单元;
在第二类别中,每个增强控制信道单元包括 30或 32个资源粒子 且每个物理资源块对承载 4个增强控制信道单元;
在第三类别中,每个增强控制信道单元包括 36或 38个资源粒子 且每个物理资源块对承载 3个增强控制信道单元; 在第四类别中,每个增强控制信道单元包括 30或 33个资源粒子 且每个物理资源块对承载 3个增强控制信道单元。
6.根据权利要求 4所述的通信方法,其中,所述第一信令是已有 物理下行控制信道信令的扩展或者增强物理下行控制信道信令。
7.根据权利要求 4所述的通信方法,其中,将所述第一信令发送 到终端节点包括:利用增强物理下行控制信道未占用的资源粒子将所 述第一信令发送到终端节点。
8.根据权利要求 1到 4中任一项所述的通信方法, 还包括: 针对每一物理资源块对,将多个增强信道控制单元映射到该物理 资源块对的多个资源粒子中, 其中, 物理资源块对中的多个增强信道 控制单元以对角排列的方式连续映射到该物理资源块对的多个资源 粒子中。
9.根据权利要求 8所述的通信方法,其中,物理资源块对中未被 占用的资源粒子被均勾映射于每一增强信道控制单元之前或每一增 强信道控制单元之后。
10.根据权利要求 8所述的通信方法, 其中, 增强物理下行控制 信道以集中的方式映射到一个物理资源块对中或者以分布的方式映 射到多个物理资源块对中。
11. 一种用于无线通信系统中的通信方法, 包括:
由通信系统中的终端节点接收来自基站的有关增强控制信道单 元配置的类别的信息,所述增强控制信道单元配置包括每个增强控制 信道单元中资源粒子的个数及每个物理资源块对中增强控制信道单 元的个数, 并且其中, 所述增强控制信道单元配置被分类成分别与通 信系统的不同系统配置对应的多个类别; 以及
、 根据所述增强控制信道单元配置的类别进行增强控制信道单元
12.根据权利要求 11所述的通信方法,其中,接收来自基站的有 关增强控制信道单元配置类别的信息包括:接收封装于 2比特的用于 指示增强控制信道单元配置类别的第一信令。
13.根据权利要求 11所述的通信方法,其中,接收来自基站的有 关增强控制信道单元配置类别的信息包括:接收物理控制格式指示信 道信息,根据该物理控制格式指示信道信息来计算可用于承载增强物 理下行控制信道的资源粒子的个数,并通过查询预先存储的增强控制 信道单元配置表来获取所述增强控制信道单元配置的类别。
14.根据权利要求 11-13中任一项所述的通信方法, 其中, 所述 控制信道单元配置的类别包括 4种类别。
15根据权利要求 14所述的通信方法, 其中, 在第一类别中, 每 个增强控制信道单元包括 32或 34个资源粒子,且每个物理资源块对 承载 4个增强控制信道单元; 在第二类别中, 每个增强控制信道单元 包括 30或 32个资源粒子,且每个物理资源块对承载 4个增强控制信 道单元; 在第三类别中, 每个增强控制信道单元包括 36或 38个资源 粒子, 且每个物理资源块对承载 3个增强控制信道单元; 在第四类别 中, 每个增强控制信道单元包括 30或 33个资源粒子, 且每个物理资 源块对承载 3个增强控制信道单元。
16.根据权利要求 11-13中任一项所述的通信方法, 其中, 所述 终端节点按照对角排列的方式连续解调物理资源块对中的多个资源 粒子以获得各个增强信道控制单元。
17.根据权利要求 16所述的通信方法,其中,物理资源块对中未 被占用的资源粒子被均匀映射于每一增强信道控制单元之后,所述终 端节点完成对每一个增强信道控制单元的解调后,跳过未被占用的资 源粒子不进行解调;或者物理资源块对中未被占用的资源粒子被均匀 映射于每一增强信道控制单元之前,所述终端节点在对每一个增强信 道控制单元的解调前, 先跳过未被占用的资源粒子不进行解调。
18.根据权利要求 16所述的通信方法,其中,所述终端节点集中 对一个物理资源块对进行增强控制信道单元的解调以获得一个增强 物理下行控制信道,或者对多个物理资源块对进行增强控制单元的解 调以获得一个增强物理下行控制信道。
19. 一种用于无线通信系统中的通信设备, 配置于通信系统的基 站中并且包括:
配置类别确定装置,用于根据所述通信系统的当前系统配置来确 定增强物理下行控制信道中的增强控制信道单元配置的类别, 其中, 所述增强控制信道单元配置包括每个增强控制信道单元中资源粒子 的个数及每个物理资源块对中增强控制信道单元的个数, 并且其中, 所述增强控制信道单元配置被分类成分别与通信系统的不同系统配 置对应的多个类别; 以及
发送装置,用于将有关所确定的增强控制信道单元配置的类别的 信息通知到所述通信系统中的终端节点。
20. 一种用于无线通信系统中的通信设备, 配置于通信系统的终 端节点中并且包括:
接收装置,用于接收来自基站的有关增强控制信道单元配置的类 别的信息,所述增强控制信道单元配置包括每个增强控制信道单元中 资源粒子的个数及每个物理资源块对中增强控制信道单元的个数,并 且其中,所述增强控制信道单元配置被分类成分别与通信系统的不同 系统配置对应的多个类别; 以及
处理装置,用于根据所述增强控制信道单元配置的类别进行增强 控制信道单元解调。
21. 一种用于无线通信系统中的通信方法, 包括:
由通信系统中的基站根据所述通信系统的当前系统配置来确定 增强物理下行控制信道中的增强控制信道单元配置的类别, 其中, 所 述增强控制信道单元配置包括每个增强控制信道单元中资源粒子的 个数及每个物理资源块对中增强控制信道单元的个数, 并且其中, 所 述增强控制信道单元配置被分类成分别与通信系统的不同系统配置 对应的多个类别;
由所述基站将有关所确定的增强控制信道单元配置的类别的信 息通知到所^ t信系统中的终端节点;
由所述终端节点接收来自所述基站的有关增强控制信道单元配 置的类别的信息; 以及
由所述终端节点根据所述增强控制信道单元配置的类别进行增 强控制信道单元解调。
22. 一种无线通信系统, 包括基站和终端节点, 其中, 所述基站 包括:
配置类别确定装置,用于根据所述通信系统的当前系统配置来确 定增强物理下行控制信道中的增强控制信道单元配置的类别, 其中, 所述增强控制信道单元配置包括每个增强控制信道单元中资源粒子 的个数及每个物理资源块对中增强控制信道单元的个数, 并且其中, 所述增强控制信道单元配置被分类成分别与通信系统的不同系统配 置对应的多个类别; 及
发送装置,用于将有关所确定的增强控制信道单元配置的类别的 信息通知到所述通信系统中的终端节点, 并且
其中, 所述终端节点包括:
接收装置,用于接收来自所述基站的有关增强控制信道单元配置 的类别的信息; 及
处理装置,用于根据所述增强控制信道单元配置的类别进行增强 控制信道单元解调。
PCT/CN2013/074564 2012-05-18 2013-04-23 无线通信系统中的通信方法和设备 WO2013170687A1 (zh)

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