CN102882644A - Downlink control information detecting processing method and device and downlink control information detecting method and device - Google Patents

Downlink control information detecting processing method and device and downlink control information detecting method and device Download PDF

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CN102882644A
CN102882644A CN2012103551670A CN201210355167A CN102882644A CN 102882644 A CN102882644 A CN 102882644A CN 2012103551670 A CN2012103551670 A CN 2012103551670A CN 201210355167 A CN201210355167 A CN 201210355167A CN 102882644 A CN102882644 A CN 102882644A
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polymerization
rnti
pdcch
degree
group
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CN102882644B (en
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谢一宁
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Sanechips Technology Co Ltd
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ZTE Corp
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Priority to PCT/CN2013/083696 priority patent/WO2014044176A1/en
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    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0075—Transmission of coding parameters to receiver

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

Abstract

The invention provides a downlink control information detecting processing method and device and a downlink control information detecting method and device. The downlink control information detecting processing method comprises the following steps: configuring a dedicated exclusive trunking search space for each trunking relative to a trunking downlink multicast channel in a broadband trunking communication system, wherein the exclusive trunking search space is identified by the temporary identification T-RNTI of the trunking wireless network; and allocating specified polymerization degree to a PDCCH (physical downlink control channel) in the configured exclusive trunking search space so that a trunking terminal detects the PDCCH in the exclusive trunking search space blindly according to the specified polymerization degree. Due to the adoption of the technical scheme of the invention, the problem that no technical means for detecting the PDCCH covered by the T-RNTI is available in the prior art is solved, the requirement of detecting the downlink control information when the trunking service information and the common service information in the trunking system coexist is met hereby.

Description

The Check processing of Downlink Control Information, detection method and device
Technical field
The present invention relates to the communications field, particularly a kind of Check processing of Downlink Control Information, detection method and device.
Background technology
The private wireless communication system that trunked communication system (Trunking Communication System) develops in order to satisfy industry user's command scheduling demand, use towards specific industry, a large amount of wireless users share a small amount of wireless channel in the system, using take command scheduling as main body, is a kind of multipurpose, dynamical wireless communication system.Trunked communication system in a government office, the market that has a wide range of applications, the field such as public safety, emergency communication, electric power, civil aviaton, petrochemical industry and army.
Trunked communication system has experienced and the similar development course of cell mobile communication systems.Wherein, first generation group system is the simulation trunked communication system, and main support voice communication is progressively eliminated by market at present.Second generation group system is the narrow-band digital trunked communication system, is risen the nineties in 20th century, and beginning is disposed in China about 2004, is the most widely used trunked communication system of Present Domestic.The digital clustering communication system support voice is communicated by letter with low speed data (the highest 28.8kbps), representative system is (the European Telecommunications Standards Institute of ETSI, referred to as ETSI) definition land trunked radio (Terrestrial Trunked Radio, referred to as TETRA) system, the Integrated Digital Enhanced Network of U.S. Motorola (Integrated Digital Enhanced Networks, referred to as iDEN) system, ZTE Co., Ltd is based on open trunking architecture (Global Open Trunking Architecture is referred to as the GoTa) system of CDMA1X exploitation and the GT800 system that develops based on GSM.
From the development of current cluster communication system, the development of trunked communication system lags far behind the development of public's cellular system, and the aspects such as its technological innovation and industrial chain are all also complete not to the utmost.Aspect the tenability of data transmission capabilities and multimedia service, present digital arrowband trunked communication system is still relatively backward.For example, the iDEN system improves the rear broadband integrated digital enhanced network (Wide-iDEN is referred to as WiDEN) of releasing to time slot and modulator approach, and hardware circuit solution is increased to 384kbps; TETRA enhanced data rates for GSM evolution (TETRA Release 2 Enhanced Data Service are referred to as TEDS) ideally can support to be no more than the hardware circuit solution of 700kbps; All do not reach the order of magnitude of Mbps.In addition, aspect the availability of frequency spectrum and covering, existing digital cluster system can not well satisfy the demands.
Along with the develop rapidly of mobile Internet and the Large scale construction in global radio city, the broadband development trend that becomes whole radio communication.Accordingly; trunked communication system technically also will be broadband to system's IPization, professional variation, data, the future development of terminal multimode; from concrete application point; be mainly reflected in high-speed data, video and be implemented in multiple application on this basis, comprise the aspects such as mobile office, multimedia cluster scheduling, video monitoring, City Emergency Linkage Control System.
By International Standards Organization's the 3rd generation partner program (3rd Generation Partnership Project, referred to as 3GPP) Long Term Evolution (the Long Term Evolution that works out, referred to as LTE) system become the mainstream standard of cellular communication of future generation, obtained the extensive support of the interior operator of global range and the manufacturer that communicates by letter, present industry has had comparatively ripe LTE system equipment and LTE terminal and has put it into commercial operation, and progressively in global large scale deployment.The LTE standard has adopted OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM), multiple-input, multiple-output (Multiple Input Multiple Output, referred to as MIMO) etc. advanced Radio Transmission Technology, flat network topology result and all-IP systems framework, support the system bandwidth of maximum 20MHz, the descending peak rate that surpasses 300Mbps and shorter transmission delay.
Consider the advantage of above-mentioned LTE standard and the requirement of broadband trunked communication system, the digital cluster system of a kind of structure based on the LTE technology of the very natural proposition of industry.In this group system, group service will be carried in grouping (packet-switched is referred to as the PS) territory, can be completely achieved sharing of Traffic Channel, greatly improve resource utilization, thereby reduce the operation cost of system.On the other hand, because the LTE technology adopts the all-IP flattening network architecture, the base station directly links to each other with core net, so the minimizing of the network side interior signaling interaction in the call establishment, and call set-up time is also shortened, and can satisfy the demand of group system.Based on the LTE mature technology, depend on industry relatively ripe LTE system equipment and terminal industrial chain are transformed fast, be conducive to release fast the broadband trunked communication system, satisfy the growing trunking communication market demand.For departments such as general enterprises, logistics, communications and transportation, in order to reduce cost, embody economic benefit, the general common set group communication system that often adopts shared frequency resource and network infrastructure, adopting provides the mode of group service to realize the command scheduling function in the public mobile communication system.On the other hand, along with the day of frequency resource is becoming tight, how to improve frequency efficiency, realize the best configuration of resource, strengthen tackling fast reaction and the ability to ward off risks urgent, accident and become top priority.In this case, Digital Clustering and public's Cellular Networks common network will become the developing direction of following digital cluster communication.This means that the broadband trunked communication system also must the common point-to-point service of compatible original LTE except supporting group service.
In the LTE standard, such as eMBMS(enhancement mode broadcast/group broadcast multimedia technology) point-to-multipoint transmission technology, wait until in the standard of 3GPP Release 9 versions just to give complete definition that industry supports that the mature system equipment of eMBMS is also relative less with terminal at present.Therefore, in the LTE technology that present stage is considered, should be still take point to point link as main.Yet the cluster downlink business is a kind of business of multicast (multicast) type of point-to-multipoint, therefore need on the basis of the original channel of LTE, increase new logic channel, referring to Fig. 1.
Newly-increased logic channel has comprised:
Clustered paging channel (Trunking Paging Channel, TPCH): be used for the paging cluster user and come the transmission of Rapid Establishment group service;
Cluster Dedicated Control Channel (Trunking Dedicated Control Channel, TDCCH): be used for carrying for descending right of speech user or individual calling user's cluster control signal;
Cluster Common Control Channel (Trunking Global Control Channel, TGCCH): be used for carrying for the control signal of listening user's descending group service in certain group;
Cluster Common transport channel (Trunking Global Traffic Channel, TGTCH): be used for carrying for the descending group service of listening the user in certain group.
In the LTE standard, downlink business generally is mapped to the upper transmission of Physical Downlink Shared Channel (Physical Downlink Shared Channel is referred to as PDSCH).The time span of PDSCH channel is the subframe (subframe) that length equals 1ms, is also referred to as a Transmission Time Interval (Transmission Time Interval is referred to as TTI).In each subframe, that corresponding with PDSCH is a physical control channel (Physical Downlink Control Channel is referred to as PDCCH).Similarly, all uplink services also are mapped to the upper transmission of Physical Uplink Shared Channel (Physical Uplink Shared Channel is referred to as PUSCH), and corresponding with PUSCH generally also have a PDCCH.Carried Downlink Control Information (Downlink Control Information is referred to as DCI) at PDCCH, these DCI have different-format (format), different control information content that difference is corresponding, for example:
DCI format 0: can be used for indicating the information such as PUSCH resource, be also referred to as " uplink authorization " (uplink grant);
DCI format 1A: can be used for indicating the information such as PDSCH resource, be also referred to as " descending distribution " (downlink assignment).
According to down channel situation (terminal is apart from the distance of base station, the size of disturbing from the adjacent area that faces etc.); for the chnnel coding protection of response is provided; guarantee that the PDCCH channel can successfully detect by very high probability in end side; DCI can adopt different chnnel coding code checks, finally is mapped on the resource of different sizes.In the LTE system, defined altogether 4 kinds of PDCCH resource size, be respectively 1,2,4 and 8 control channel elements (Control Channel Element is referred to as CCE), wherein each CCE has comprised the bit information behind 72 codings.The CCE number that PDCCH is shared is also referred to as the degree of polymerization (aggregation level).The degree of polymerization is higher, means that the coding protection that provides is stronger, but simultaneously shared resource is also more.
The LTE uplink and downlink all adopt dynamic assignment (dynamic scheduling) or semi-continuous distribution (semi-persistent scheduling is referred to as SPS) mode, and very high flexibility ratio is provided.Accordingly, with PDSCH and the corresponding PDCCH control channel of PUSCH, also in certain public " control area " (control region), distribute.This control area generally is to be made of front 1 ~ 4 OFDM symbol that each subframe begins.Owing to have different logic channels and transmission channel kinds in the system, such as system message, paging, accidental access response, user's dedicated uplink and downlink business and uplink power control order etc., in order to distinguish, Radio Network Temporary Identifier (Radio Network Temporary Identifier is referred to as RNTI) for each PDSCH and 16 bit lengths that are associated of PUSCH definition.
In a subframe, may exist a plurality of PDCCH needs to send simultaneously, the LTE system is in order to reduce the control channel expense, and these PDCCH channels are dynamic assignment in residing position, above-mentioned control area.Like this, terminal must be searched in this control area first in order to receive DCI.In the LTE system, in this public domain, search for the processing complexity of PDCCH in order to reduce terminal, reduce the purpose of processing time-delay and/or reducing power consumption thereby reach, two " PDCCH search volumes " in the control area, have been defined respectively, i.e. public search space (common search space) and the exclusive search volume of UE (UE-specific search space).Corresponding every kind of DCI type, terminal only need to be searched in the search volume of correspondence, that is: in the control area, each allows to occur the original position of PDCCH correspondence, attempt processing (comprising: the links such as deinterleaving, rate de-matching, channel decoding), and utilize aforementioned RNTI value that CRC is partly removed to cover (de-masking), if CRC check is correct by the corresponding degree of polymerization successively, then detected a PDCCH, and the DCI information that comprises has been resolved.Said process is also referred to as PDCCH blind Detecting (PDCCH blind detection) process.Notice that public search space only takies the space of maximum 16 CCE, the general PDCCH transmission that is used for carrying for for all users or non-user-specific in the residential quarter, such as system broadcast message and beep-page message etc.; But, vacant if public search space has for the purpose of raising flexibility and raising spectrum efficiency, so also some PDCCH for the specific user can be arranged in this public search space.Therefore, even add the user special information of covering for C-RNTI, except in the search of the exclusive search volume of UE, also need in public search space, carry out corresponding PDCCH detection.
According to the definition of LTE standard, for various DCI forms, terminal need to be carried out at most totally 44 secondary channels decodings (Viterbi decoding) in each subframe.
In the control area, public search space equals 0 from the CCE offset address; And the exclusive search volume of UE, the CCE offset address of corresponding each degree of polymerization then is to be generated by a hash function (Hashing function), and changes by subframe.The initial value of this hash function equals terminal and sets up the C-RNTI that distributes when RRC connects.Corresponding each terminal because C-RNTI is its unique identification in network, therefore can guarantee for the exclusive search volume of the defined UE of each terminal on each subframe, be different.An example is referring to Fig. 2.The probability that can guarantee like this to occur between the exclusive search volume of UE of different terminals conflict is low as far as possible, thereby the availability of frequency spectrum that can guarantee the control channel transmission is higher, and it is that different terminals carries out the flexibility ratio that PDCCH divides timing that network also is provided when logical.
Aforementioned four newly-increased cluster logic channels all are mapped to the DL-SCH transmission channel, are mapped on the PDSCH physical channel in the transmission of eating dishes without rice or wine again.For these four newly-increased cluster logic channels, adopt respectively RNTI existing or new definition to distinguish according to its characteristic.Wherein:
TPCH channel: relevant with the original paging channel of LTE (Paging Channel is referred to as PCH) machine-processed similar in essence, by the clustered paging RNTI(TP-RNTI of a new definition) adding the PDCCH that covers carries out the indication of PDSCH resource; Stagger by each terminal need to be received the actual of common paging and clustered paging, just can avoid terminal need to same subframe go simultaneously to detect P-RNTI and TP-RNTI add the PDCCH that covers may;
The TDCCH channel: in essence or point-to-point transmission, the PDCCH that therefore still adopts the original C-RNTI of LTE or SPSC-RNTI to cover carries out the PDSCH resource, wherein C-RNTI be the user when setting up RRC and connecting network allocation to this user's a sign;
TGCCH and TGTCH channel: be the point-to-multipoint transmission in essence, cluster RNTI(T-RNTI by one group of new definition) adds the PDCCH that covers and carry out the indication of PDSCH resource, wherein, network is reserved a collection of (for example: 4096) RNTI value as T-RNTI in the RNTI space, and be T-RNTI of each newly-built group allocation, all listen the user all to adopt this T-RNTI to carry out the professional reception of corresponding descending cluster multicast in this group.
For describing for simplicity, here TGCCH and TGTCH are referred to as " the descending multicast channel of cluster ".In some other document, might adopt different titles to these cluster down channels, but the essence of their point-to-multipoint transmission is identical.
In this patent, group (trunking group): as its name suggests, trunking communication is the multigroup user to be integrated into instrument communicate.The maximum characteristics of trunking communication are that Speech Communication adopts PTT((Push To Talk), continue in a mode that pushes to talk, the called off-hook that need not can be answered, and speed continues, and can support the functions such as group call, its function mode mainly adopts the dynamics of channels method of salary distribution take single worker, half-duplex as main, and the user has different priority levels and specific function, can get ready to go into action in hundreds during communication.
In order to make the colony terminal can be when receiving the descending multicast channel of cluster, can also continue to keep the carrying out of original LTE general service, wish that terminal on existing PDCCH blind Detecting process base, increases the detection that adds the PDCCH that covers for above-mentioned T-RNTI again.How carry out the search volume definition for T-RNTI adds the PDCCH that covers, and the relevant terminal searching method of definition, be based on one of key issue that the group system of LTE need to solve.And, for a plurality of groups in the while network enabled, may there be simultaneously a plurality of T-RNTI, the PDCCH capacity that only relies on public search space to provide (only can hold 2 degree of polymerization and equal 8, or 4 PDCCH channels that the degree of polymerization equals 4) be far from being enough, for the problems referred to above of correlation technique, effective solution is proposed not yet at present.
Summary of the invention
The invention provides a kind of Check processing, detection method and device of Downlink Control Information, be used for solving correlation technique, there is no T-RNTI is added the technological means that the PDCCH that covers detects, and when having a plurality of T-RNTI, the technical problems such as the PDCCH off-capacity that existing public search space provides.
For achieving the above object, according to a first aspect of the invention, provide a kind of Check processing method of Downlink Control Information, and adopt following technical scheme:
The Check processing method of Downlink Control Information, be used for network side entity, comprise: the exclusive search volume of group that disposes respectively a special use for the descending multicast channel of the cluster in the trunked communication system of broadband for each group, wherein, the exclusive search volume of this group is identified by cluster wireless network temporary mark T-RNTI; In the exclusive search volume of described group of configuration, for physical downlink control channel PDCCH is distributed the appointment degree of polymerization, so that colony terminal carries out blind Detecting according to the described appointment degree of polymerization to the PDCCH in the exclusive search volume of described group.
Further, for physical downlink control channel PDCCH is distributed the appointment degree of polymerization, comprise: each described T-RNTI is added the physical downlink control channel PDCCH of covering distribute a described appointment degree of polymerization, wherein, the described appointment degree of polymerization and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and semi-continuous distribution cell-radio network sign SPSC-RNTI adds the PDCCH degree of polymerization covered without common factor.
Further, each described T-RNTI is added after described appointment degree of polymerization of physical downlink control channel PDCCH distribution of covering, also comprise: receive on the subframe of the descending multicast channel of cluster at the described colony terminal of needs, select C-RNTI and SPSC-RNTI to add the PDCCH degree of polymerization of covering the degree of polymerization outside the described appointment degree of polymerization.
Further, the exclusive search volume of described group disposes in the following manner: in the exclusive search volume of UE, divide specified search range as the exclusive search volume of described group.
Further, each described T-RNTI is added the physical downlink control channel PDCCH covered to T-RNTI distribute one to specify after the degree of polymerization, also comprise: the appointment signaling of setting up in the process by the descending connection of system broadcast message or group issues the described appointment degree of polymerization to colony terminal.
Further, the Check processing method of Downlink Control Information also comprises: issue indication information to described colony terminal, wherein, this indication information is used to indicate the subframe that needs to receive the descending multicast channel of cluster.
According to a second aspect of the invention, provide a kind of detection method of Downlink Control Information, and adopt following technical scheme:
The detection method of Downlink Control Information, be used for colony terminal, comprise: receive the appointment degree of polymerization that comes from network side entity, wherein, this appointment degree of polymerization be network side entity for the descending multicast channel of the cluster in the trunked communication system of broadband, in the exclusive search volume of group of configuration, be the appointment degree of polymerization that physical downlink control channel PDCCH is distributed, and the exclusive search volume of described group is identified by cluster wireless network temporary mark T-RNTI; According to the described appointment degree of polymerization PDCCH in the exclusive search volume of described group is carried out blind Detecting.
Further, the described appointment degree of polymerization is described network side entity adds the physical downlink control channel PDCCH distribution of covering to each described T-RNTI the degree of polymerization, and the described appointment degree of polymerization and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and SPSC-RNTI add the PDCCH degree of polymerization covered without common factor.
According to a third aspect of the present invention, provide a kind of Check processing device of Downlink Control Information, and adopt following technical scheme:
The Check processing device of Downlink Control Information, be arranged in network side entity, comprise: configuration module, be used for for the descending multicast channel of the cluster of broadband trunked communication system, dispose respectively the exclusive search volume of group of a special use for each group, wherein, the exclusive search volume of this group is identified by cluster wireless network temporary mark T-RNTI; Distribution module is used in the exclusive search volume of described group of configuration, distributes for physical downlink control channel PDCCH and specifies the degree of polymerization, and wherein, colony terminal carries out blind Detecting according to the described appointment degree of polymerization to the PDCCH in the exclusive search volume of described group.
According to a fourth aspect of the present invention, provide a kind of checkout gear of Downlink Control Information, and adopt following technical scheme:
The checkout gear of Downlink Control Information, be arranged in colony terminal, comprise: receiver module, be used for receiving the appointment degree of polymerization that comes from network side entity, wherein, this appointment degree of polymerization is that network side entity is for the descending multicast channel of the cluster in the trunked communication system of broadband, in the exclusive search volume of group of configuration, be the degree of polymerization of physical downlink control channel PDCCH distribution, and the exclusive search volume of described group is identified by cluster wireless network temporary mark T-RNTI; Detection module is used for according to the described appointment degree of polymerization PDCCH in the exclusive search volume of described group being carried out blind Detecting.
By the present invention, be adopted as the technological means that each group all disposes the exclusive search volume of group of a special use, solved in the correlation technique, there is no T-RNTI is added the technological means that the PDCCH that covers detects, and when having a plurality of T-RNTI at the same time, the technical problems such as the PDCCH off-capacity that existing public search space provides, thus the Downlink Control Information when satisfying group service and general service coexistence in the group system detects demand.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 be according to the newly-increased logic channel of the cluster of correlation technique and and transmission channel and physical channel between the schematic diagram of mapping relations;
Fig. 2 is an example of defined PDCCH public search space and the exclusive search volume of UE in the LTE system according to correlation technique;
Fig. 3 is the flow chart according to the Check processing method of the Downlink Control Information of the embodiment of the invention 1;
Fig. 4 is the structured flowchart according to the Check processing device of the Downlink Control Information of the embodiment of the invention 1;
Fig. 5 is the flow chart according to the detection method of the Downlink Control Information of the embodiment of the invention 2;
Fig. 6 is the structured flowchart according to the checkout gear of the Downlink Control Information of the embodiment of the invention 2;
Fig. 7 is an example schematic diagram according to the exclusive search volume of PDCCH public search space, UE and the exclusive search volume of group of the embodiment of the invention 3;
Fig. 8 carries out the FB(flow block) that PDCCH detects simultaneously for the terminal according to the embodiment of the invention 3 in the exclusive search volume in the exclusive search volume of UE and group.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Consider in the correlation technique that when having a plurality of T-RNTI at the same time, the technical problems such as the PDCCH off-capacity that existing public search space provides provide relevant solution below in conjunction with embodiment, the existing detailed description in detail.
Fig. 3 is the flow chart according to the Check processing method of the Downlink Control Information of the embodiment of the invention 1.The method is used and is used for network side entity, and referring to shown in Figure 3, the method comprises following treatment step:
Step S302, for the descending multicast channel of the cluster in the trunked communication system of broadband, for each group disposes respectively the exclusive search volume of group of a special use, wherein, the exclusive search volume of this group is identified by T-RNTI;
Step S304 in the exclusive search volume of group of configuration, specifies the degree of polymerization for PDCCH distributes, so that colony terminal is according to specifying the degree of polymerization that the PDCCH in the exclusive search volume of group is carried out blind Detecting.
By above-mentioned treatment step, no matter for the situation that has one or more T-RNTI, all can utilize above-mentioned treatment step that PDCCH is carried out blind Detecting, especially for the situation that has a plurality of T-RNTI, can solve in the case, the technical problem of the PDCCH off-capacity that existing public search space provides, thus the Downlink Control Information when satisfying general service and group service coexistence in the group system detects demand.
Adopt the processing procedure among step S302 and the step S304, since increased the exclusive search volume of a cover newly, still, based on the LTE prior art, often only consider the exclusive search volume of support public search space and UE during Terminal Design, supported accordingly maximum 44 Viterbi decodings to process.If terminal is overlapped new exclusive search volume in order to support group system and need to increase by one, increased undoubtedly the processing load of terminal PDCCH blind Detecting, cause the rising of complexity and/or the increase of power consumption.And, if need to increase the PDCCH blind Detecting processing time, may mean that the more buffer memory of needs stores the receive data of each subframe, because before the DCI information analysis on finishing PDCCH, the method for there is no begins to carry out PDSCH decoding processing.And, also can reduce the time of leaving the PUSCH transmission processing for.Therefore the soft and hardware timing Design to terminal also may be produced very tremendous influence.If the impact on terminal modifications is too large, then can cause available terminal kind very few, the successful commercialization of group system is had a negative impact.
In a word, the descending multicast channel of cluster for the point-to-multipoint form that should increase newly in the cluster, need on the one hand terminal to support the T-RNTI in the exclusive space of group to add the PDCCH detection of covering, rising and the required change amount of carrying out of the terminal PDCCH blind Detecting complexity of on the other hand again must consideration bringing thus.In order to release rapidly the terminal of supporting based on the broadband trunked communication system of LTE, must solve above-mentioned contradiction, take into account demand and the situations such as terminal processing capacity and maturity of cluster.For solving above-mentioned contradiction, in the present embodiment, network side entity adds the physical downlink control channel PDCCH of covering to each T-RNTI and distributes to specify a degree of polymerization, wherein, specify the degree of polymerization and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and semi-continuous distribution cell-radio network to identify SPSC-RNTI and add the PDCCH degree of polymerization covered without common factor.
Existing LTE related specifications regulation, terminal need respectively UE the degree of polymerization in the exclusive search volume to be respectively 1,2,4,8 PDCCH in each subframe to search for.Now in order to support cluster application, for example network is that the degree of polymerization that T-RNTI adds the PDCCH appointment of covering is 4, terminal is carried out PDCCH when search in the exclusive search volume of original UE so, just avoids the degree of polymerization and be 4 PDCCH, is respectively 1,2,8 PDCCH and only search for the degree of polymerization; Then, terminal vacant in this subframe be 4 PDCCH searching resource for the degree of polymerization, be used for carrying out T-RNTI and add the PDCCH search of covering.Like this, the total PDCCH search complexity of terminal does not rise.This mode, terminal only need to change during to the PDCCH of different polymerization degree search hardware resource in dispense needles and get final product, and be comparatively simple.
Correspondingly, network side entity adds an appointment of the physical downlink control channel PDCCH distribution degree of polymerization of covering to T-RNTI to each T-RNTI after, needing colony terminal to receive on the subframe of the descending multicast channel of cluster, select C-RNTI and SPSC-RNTI to add the PDCCH degree of polymerization of covering the degree of polymerization outside specifying the degree of polymerization.
In the present embodiment, the exclusive search volume of group disposes in the following manner: in the exclusive search volume of UE, divide specified search range as the exclusive search volume of group.Can show as following processing procedure:
In the exclusive search volume of former UE, part for " DCI format 1 or 1B or 1D or 2 or 2A or 2B ", can mark specially and search for to the PDCCH in the exclusive search volume of group, so still can accomplish not increase the number of times of Viterbi decoding in the terminal PDCCH blind detection process.
In the present embodiment, network side entity adds T-RNTI after an appointment of the physical downlink control channel PDCCH distribution degree of polymerization of covering each T-RNTI, and network side entity also needs to issue the appointment degree of polymerization by the appointment signaling that the descending connection of system broadcast message or group is set up in the process to colony terminal.
In the present embodiment, network side entity can also issue indication information to colony terminal, and wherein, this indication information is used to indicate the subframe that needs to receive the descending multicast channel of cluster.
In the present embodiment, also provide a kind of Check processing device of Downlink Control Information, be arranged in network side entity, be used for realizing said method, as shown in Figure 4, this device comprises:
Configuration module 40, be connected to distribution module 42, be used for for the descending multicast channel of the cluster of broadband trunked communication system, dispose respectively the exclusive search volume of group of a special use for each group, wherein, the exclusive search volume of this group is identified by cluster wireless network temporary mark T-RNTI;
Distribution module 42 is used in the exclusive search volume of group of configuration, distributes for physical downlink control channel PDCCH and specifies the degree of polymerization, and wherein, colony terminal is according to specifying the degree of polymerization that the PDCCH in the exclusive search volume of group is carried out blind Detecting.
Embodiment 2
Present embodiment is the processing scheme corresponding with embodiment 1, mainly describes in end side.Method in the present embodiment is applied in the colony terminal, and particularly, Fig. 5 is the flow chart according to the detection method of the Downlink Control Information of the embodiment of the invention 2, and as shown in Figure 5, the method comprises:
Step S502, reception comes from the appointment degree of polymerization of network side entity, wherein, this appointment degree of polymerization is that network side entity is for the descending multicast channel of the cluster in the trunked communication system of broadband, in the exclusive search volume of group of configuration, be the appointment degree of polymerization of PDCCH distribution, and the exclusive search volume of group is identified by cluster wireless network temporary mark T-RNTI;
Step S504 is according to specifying the degree of polymerization that the PDCCH in the exclusive search volume of group is carried out blind Detecting.
With identical among the embodiment 1, in the present embodiment, the above-mentioned appointment degree of polymerization is network side entity adds the physical downlink control channel PDCCH distribution of covering to T-RNTI to each T-RNTI the degree of polymerization, and the PDCCH degree of polymerization of specifying the degree of polymerization and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and SPS C-RNTI to add to cover is without common factor.
In the present embodiment, also provide a kind of checkout gear of Downlink Control Information, be arranged in colony terminal, be used for realizing said method, as shown in Figure 6, this device comprises:
Receiver module 60, be connected to detection module 62, be used for receiving the appointment degree of polymerization that comes from network side entity, wherein, this appointment degree of polymerization be network side entity for the descending multicast channel of the cluster in the trunked communication system of broadband, in the exclusive search volume of group of configuration, be the degree of polymerization that physical downlink control channel PDCCH is distributed, and, specify the degree of polymerization to be identified by cluster wireless network temporary mark T-RNTI;
Detection module 62 is used for according to specifying the degree of polymerization that the PDCCH in the exclusive search volume of group is carried out blind Detecting.
In order to understand better above-described embodiment, describe in detail below in conjunction with embodiment 3 and embodiment 4
Embodiment 3
Present embodiment provides a kind of method that Downlink Control Information detects of carrying out in the broadband trunked communication system based on LTE, under the prerequisite of the PDCCH Check processing ability need that does not increase existing terminal, be used in the detection of the Downlink Control Information (as: descending colony dispatching information) in the exclusive search volume of Downlink Control Information (as: uplink authorization) and group of carrying out simultaneously in the same subframe in the exclusive search volume of UE, thus the Downlink Control Information testing requirement in the time of can satisfying general service and group service coexistence in the group system.
For achieving the above object, the technical scheme that present embodiment adopts is as follows:
Group system is exclusive search volume of group of each cluster group definition, and this search volume generates based on T-RNTI.Wherein, T-RNTI is a residential quarter unique identification of this group, distributes when the descending connection of group is set up, and all listen the user to utilize T-RNTI to carry out the reception of the descending multicast channel of cluster in this group.
Group system is that T-RNTI adds fixing PDCCH CCE degree of polymerization of PDCCH distribution of covering, should can be chosen for 4 or 8 by fixing PDCCE CCE polymeric area, and by system broadcast message or set up in the process related signaling by the descending connection of group and indicate this value to colony terminal.
Group system is also set up related signaling in the process by system broadcast message or by the descending connection of group, indicates those subframes need to receive descending cluster multicast channel to terminal.
For each group, system adopts following method when the DCI planning of carrying out each subframe distributes and determines the PDCCH degree of polymerization:
On those subframes that need not the descending multicast channel of terminal reception cluster, the correlation technique processing C-RNTI/SPS C-RNTI that still continues to use existing LTE network adds the PDCCH that covers, and need not to make change;
Needing terminal to receive on those subframes of the descending multicast channel of cluster, when determining that C-RNTI/SPSC-RNTI adds the PDCCH degree of polymerization of covering, need to avoid aforementionedly for T-RNTI adds that fixing degree of polymerization that the PDCCH that covers adopts, and in remaining degree of polymerization set, select.
Correspondingly, terminal is carried out the PDCCH blind Detecting as follows in each subframe:
When if the descending connection of cluster group is not yet set up or need not to receive on those subframes of the descending multicast channel of cluster, still continue to use existing PDCCH blind checking method and process, having comprised: carry out the search that C-RNTI/SPS C-RNTI adds the PDCCH that covers at public search space with by C-RNTI in the exclusive search volume of defined UE;
Receive at needs on those subframes of the descending multicast channel of cluster, in public search space and the exclusive search volume based on the T-RNTI definition, carry out T-RNTI and add the PDCCH detection of covering, only adopt the aforementioned fixing cluster PDCCH CCE degree of polymerization to search for when in the exclusive search volume of group, detecting simultaneously;
Receive at needs on those subframes of the descending multicast channel of cluster, in public search space and the exclusive search volume of UE based on the C-RNTI definition, carry out C-RNTI/SPS C-RNTI and add the PDCCH detection of covering, avoid the aforementioned fixing cluster PDCCH CCE degree of polymerization when in the exclusive search volume of UE, detecting simultaneously and search for.
It can be seen from the above, in the present embodiment, for the descending multicast channel of cluster, increased one " the exclusive search volume of group " newly, and this search volume is defined by the corresponding T-RNTI of group; In the exclusive search volume of this group, add the PDCCH that covers by T-RNTI and adopt certain fixing CCE degree of polymerization, for example 4 or 8, and indicate to terminal by system message or signaling; Needing terminal to receive on the subframe of the descending multicast channel of cluster, group system is in the exclusive search volume of UE by the C-RNTI definition, carry out the resource that C-RNTI/SPS C-RNTI adds the PDCCH that covers and divide timing, need to avoid above-mentioned T-RNTI and add the fixation of C CE degree of polymerization that the PDCCH that covers adopts, and in remaining degree of polymerization set, select; Terminal receives on the subframe of the descending multicast channel of cluster at needs, can in the exclusive space of UE by C-RNTI definition, carry out C-RNTI/SPS C-RNTI and add the PDCCH that covers and detect, and in the exclusive search volume of defined group by T-RNTI, carry out T-RNTI simultaneously and add the PDCCH that covers and detect;
For terminal realizes, owing to the CCE degree of polymerization of the PDCCH in two exclusive search volumes is not occured simultaneously, therefore in fact do not increase the complexity that terminal is carried out the PDCCH blind Detecting, this is a key point.On the other hand, although the degree of polymerization to original part PDCCH has provided constraint, but influence surface is very little (only influential to the cluster group user, and only need to receive on the subframe of the descending multicast channel of cluster influential at those), and system equipment can adopt some other means (for example: avoid distributing this CCE degree of polymerization in these subframes, if can delay the enough raisings of other subframe scheduling or space, the control area CCE degree of polymerization) to be down to this impact minimum.Therefore, use this method, the impact that need to do transformation on current LTE terminal, system equipment in order to support cluster is very little.
In the present embodiment, also provide two kinds of replacement schemes of above-described embodiment to be,
The first replacement scheme, increase by force a group dedicated search space, simultaneously also original C-RNTI/SPS C-RNTI is not added the CCE degree of polymerization of covering PDCCH and do any restriction, but must mean that like this this terminal carries out the rising of PDCCH blind Detecting complexity, against original intention of the present invention.
The second replacement scheme, in the exclusive search volume of former UE, part for " DCI format 1or 1B or1D or 2or 2A or 2B ", can mark specially and search for to the PDCCH in the exclusive search volume of cluster, so still can accomplish not increase the number of times of Viterbi decoding in the terminal PDCCH blind detection process.But do so undoubtedly the realization flexibility ratio of existing LTE terminal is had higher requirement, must consider whether existing terminal can be supported.
Embodiment 4
Present embodiment provides a kind of broadband cluster digital communication system based on existing LTE system constructing, and when the RNTI that the definitions set faciation closes, specially for T-RNTI marks off a scope, certain segment length that for example is positioned at 0001 ~ FFF3 is a segment limit of 4096.Wherein, T-RNTI is a residential quarter unique identification of each group, distributes when the descending connection of group is set up, and all listen the user to utilize T-RNTI to carry out the reception of the descending multicast channel of cluster in this group.
In the present embodiment, group system is exclusive search volume of group of each cluster group definition, and this search volume generates based on T-RNTI.For example: can use for reference the mode of utilizing hash function to generate exclusive search volume in the existing LTE standard, degree of polymerization L(L set value among 1,2,4, the 8}) and the search volume
Figure BDA00002173210000151
Based on parameter Y kGet Y when calculating -1Equal T-RNTI:
Wherein, Y kImplication be: the initial CCE offset address in the PDCCH search volume.Following table k represents subframe sequence number (0＜=k＜=9), and subscript-1 represents initialization value here.
Y k=(A*Y k-1)mod?D
Wherein, the implication of D is total CCE number that the PDCCH search volume comprises.
Wherein, mod is modulo operation, and A=39827, D=6557, k are subframe numbers (0 ~ 9).Then, the PDCCH Candidate Set of corresponding degree of polymerization L is defined as:
L*{(Y k+m)mod?floor(N CCE,K/L)}+i
Wherein, m is the index for the PDCCH candidate of some degree of polymerization L.I represents among each PDCCH candidate, the index of CCE.The calculating of floor representative " rounding downwards ".
Wherein, N CCE, kRepresent the CCE number that the control area comprises in k the subframe, i=0 ..., L – 1 represented among the PDCCH comprised the sequence number of L CCE, m=0 ..., M (L)– 1 is M here (L)It is the PDCCH candidate number of the defined degree of polymerization L of LTE standard.
Group system is that T-RNTI adds fixing PDCCH CCE degree of polymerization of PDCCH distribution of covering.Consider that need covering the group user that is positioned at cell edge receives, this fixing PDCCE CCE polymeric area can be chosen for 4 or 8, and by system broadcast message or set up in the process related signaling by the descending connection of group and indicate this value to colony terminal.
As shown in Figure 7, suppose to calculate k the Y in the subframe according to T-RNTI k=38, and k the interior control area of subframe contained N altogether CCE, k=42 CCE.Simultaneously, system fixedly T-RNTI add the CCE degree of polymerization L=4 of the PDCCH that covers.Calculate according to following formula so, can obtain corresponding M (4)The CCE start offset address of=2 candidate PDCCH in the control area equals respectively:
The PDCCH position candidate that m=0 is corresponding is initial: 4*{ (36+0) mod floor (42/4) }=24
The PDCCH position candidate that m=1 is corresponding is initial: 4*{ (36+1) mod floor (42/4) }=28
On the other hand, group system is also set up related signaling in the process by system broadcast message or by the descending connection of group, indicates those subframes need to receive descending cluster multicast channel to terminal.For example: according to system dispatching cycle, a bitmap of definable (bitmap), whether the corresponding subframe of each bit representative in the bitmap the descending multicast channel of portability cluster, and the length of bitmap is exactly the dispatching cycle of network.After colony terminal is received this bitmap, just can know and which subframe to remove to receive the descending multicast channel of cluster in.And for those terminals of not supporting the terminal of cluster or also not setting up the descending multicast service of cluster, then can ignore these indications, still carry out common LTE business by original mode.
Need to receive those subframes of the descending multicast channel of cluster at colony terminal, if system also will distribute other to add the PDCCH that covers by C-RNTI or SPS C-RNTI in the exclusive search volume of UE in same subframe for this colony terminal, uplink authorization for example, so when determining the CCE degree of polymerization of PDCCH, need to avoid above-mentionedly adding the fixation of C CE degree of polymerization that the PDCCH that covers distributes for T-RNTI.
Continuation is supposed to calculate k the Y in the subframe according to C-RNTI referring to Fig. 7 k=9.Simultaneously, because system chooses the CCE degree of polymerization L=4 that T-RNTI adds the PDCCH that covers, therefore add the PDCCH that covers for C-RNTI or SPS C-RNTI, the selected CCE degree of polymerization need to be avoided L=4, and namely L can only select { 1,2,8}.Calculate according to the original formula of LTE standard so, it is as follows to obtain the CCE start offset address of corresponding candidate PDCCH in the control area:
L=1(has comprised M altogether (1)=6 PDCCH candidates):
The PDCCH position candidate that m=0 is corresponding is initial: 1*{ (9+0) mod floor (42/1) }=9
The PDCCH position candidate that m=1 is corresponding is initial: 1*{ (9+1) mod floor (42/1) }=10
The PDCCH position candidate that m=2 is corresponding is initial: 1*{ (9+2) mod floor (42/1) }=11
The PDCCH position candidate that m=3 is corresponding is initial: 1*{ (9+3) mod floor (42/1) }=12
The PDCCH position candidate that m=4 is corresponding is initial: 1*{ (9+4) mod floor (42/1) }=13
The PDCCH position candidate that m=5 is corresponding is initial: 1*{ (9+5) mod floor (42/1) }=14
L=2(has comprised M altogether (2)=6 PDCCH candidates):
The PDCCH position candidate that m=0 is corresponding is initial: 2*{ (9+0) mod floor (42/2) }=18
The PDCCH position candidate that m=1 is corresponding is initial: 2*{ (9+1) mod floor (42/2) }=20
The PDCCH position candidate that m=2 is corresponding is initial: 2*{ (9+2) mod floor (42/2) }=22
The PDCCH position candidate that m=3 is corresponding is initial: 2*{ (9+3) mod floor (42/2) }=24
The PDCCH position candidate that m=4 is corresponding is initial: 2*{ (9+4) mod floor (42/2) }=26
The PDCCH position candidate that m=5 is corresponding is initial: 2*{ (9+5) mod floor (42/2) }=28
L=8(has comprised M altogether (8)=2 PDCCH candidates):
The PDCCH position candidate that m=0 is corresponding is initial: 8*{ (9+0) mod floor (42/8) }=32
The PDCCH position candidate that m=1 is corresponding is initial: 8*{ (9+1) mod floor (42/8) }=0
Need to prove, for non-colony terminal or need not to receive on those subframes of the descending multicast channel of cluster for colony terminal, system still can press { 1 in the exclusive search volume of UE by the original mode of LTE, 2,4, by existing criterion, choose C-RNTI or SPS C-RNTI and add the PDCCHCCE degree of polymerization of covering in the 8} set.Therefore, said method PDCCH flow process that original LTE general service is associated is without any impact.
On the other hand, even need to receive at colony terminal on those subframes of the descending multicast channel of cluster, in the corresponding exclusive search volume of UE, run into the restriction that above-mentioned certain CCE degree of polymerization can not be selected, system still has some means to be solved.Illustrate, suppose that the CCE degree of polymerization 4 left T-RNTI for and added the PDCCH that covers and used, but system is according to the estimation of the descending PDCCH quality of reception of this terminal, discovery is chosen the CCE degree of polymerization for this terminal PDCCH and is equaled 4 also proper, so just may produce conflict, two kinds of countermeasures are arranged this moment:
Method A: if the control area remaining space is enough, in this subframe, just equal 8 for C-RNTI or SPSC-RNTI add the PDCCH selective polymerization degree of covering;
Method B: if the uplink service throughput of this terminal is less demanding, for example voice or in, the low speed transmitting uplink data, can be chosen in so this colony terminal need not to receive on those subframes of the descending multicast channel of cluster, carry out C-RNTI or SPS C-RNTI and add the PDCCH scheduling of covering, this moment, the CCE degree of polymerization was selected no longer restricted.
By top embodiment as seen, adopt method provided by the present invention, can support the definition of the exclusive search volume of group, select the impact of realization also smaller on the original DCI programming dispatching of system equipment and the PDCCH CCE degree of polymerization simultaneously, be conducive to existing LTE system equipment is transformed to support cluster communication function fast.
The execution mode of end side:
Corresponding with the system side execution mode, terminal is carried out the PDCCH blind Detecting as follows in each subframe.
Particularly, terminal is by read apparatus message or receive group and connect related signaling when setting up, knows that system is that T-RNTI adds the fixing CCE degree of polymerization value that the PDCCH that covers distributes, and for example 4 or 8.Then, terminal also needs read apparatus message, perhaps receives group and connects related signaling when setting up, and the information of the subframe of the descending multicast channel of cluster may be dispatched by the system of obtaining, for example a bitmap.
When the descending connection of cluster group is not yet set up or need not to receive on those subframes of the descending multicast channel of cluster, still continue to use existing PDCCH blind checking method and process, having comprised: carry out the search that C-RNTI or SPS C-RNTI add the PDCCH that covers in the exclusive search volume of defined UE at public search space with by C-RNTI.
Need to receive in terminal on those subframes of the descending multicast channel of cluster, in public search space and the exclusive search volume based on the T-RNTI definition, carry out T-RNTI and add the PDCCH detection of covering, only adopt the aforementioned fixing cluster PDCCH CCE degree of polymerization to search for when in the exclusive search volume of group, detecting simultaneously.
Above-mentioned processing procedure specifically can show as handling process shown in Figure 8, and as shown in Figure 8, this flow process comprises:
Step S802, beginning;
Step S804 has judged whether to plan the subframe of colony dispatching, if turn step S806, otherwise, turn step S818;
Step S806 obtains the CCE degree of polymerization T of cluster group scheduling Downlink Control Information.
Does step S808 judge that the CCE degree of polymerization equals 8? if it is turn step S810, otherwise, step S814 turned;
Step S810 in public search space and the exclusive search volume of group by the T-RNTI definition, carries out T-RNTI by the CCE degree of polymerization 8 and adds the PDCCH blind Detecting of covering.
Step S812 in public search space and the exclusive search volume of UE by the C-RNTI definition, carries out C-RNTI/SPS C-RNTI by the CCE degree of polymerization 1,2,4 respectively and adds the PDCCH blind Detecting of covering.Turn step S820;
Step S814 in public search space and the exclusive search volume of group by the T-RNTI definition, carries out T-RNTI by the CCE degree of polymerization 4 and adds the PDCCH blind Detecting of covering.Turn step S816;
Step S816 in public search space and the exclusive search volume of UE by the C-RNTI definition, carries out C-RNTI/SPS C-RNTI by the CCE degree of polymerization 1,2,8 respectively and adds the PDCCH blind Detecting of covering.Turn step S820;
Step S818 in public search space and the exclusive search volume of UE by the C-RNTI definition, carries out C-RNTI/SPS C-RNTI by the CCE degree of polymerization 1,2,4,8 respectively and adds the PDCCH blind Detecting of covering.
Step S820 finishes.
In the present embodiment, T-RNTI adds the degree of polymerization that the PDCCH that covers chooses and is not limited to 8 and can also be other values, for example, referring to Fig. 7, suppose that the terminal known system is that T-RNTI adds the PDCCH that covers and chooses the CCE degree of polymerization and be fixed as 4, carry out the detection that T-RNTI adds the PDCCH that covers so in the exclusive search volume of group that calculate based on T-RNTI, corresponding L=4, show among the figure, the detection that only need to be 2 PDCCH candidates gets final product.Simultaneously, terminal also can be carried out the detection that T-RNTI adds the PDCCH that covers at public search space.
Need to receive in terminal on those subframes of the descending multicast channel of cluster, in public search space and the exclusive search volume of UE based on the C-RNTI definition, carry out C-RNTI/SPS C-RNTI and add the PDCCH detection of covering, avoid the aforementioned fixing cluster PDCCH CCE degree of polymerization when in the exclusive search volume of UE, detecting simultaneously and search for.
For example, referring to Fig. 7, suppose that the terminal known system is that T-RNTI adds the PDCCH that covers and chooses the CCE degree of polymerization and be fixed as 4, so calculate based on C-RNTI, carry out the detection that C-RNTI or SPS C-RNTI add the PDCCH that covers in corresponding L=1,2 and 8 the exclusive search volume of UE respectively.This meaning person, respectively corresponding L=1,2 and 8 the CCE degree of polymerization need to do 6,6 and 2 PDCCH candidates' detection successively.Simultaneously, terminal also can be carried out the detection that C-RNTI or SPSC-RNTI add the PDCCH that covers at public search space.
Therefore, referring to Fig. 7, when terminal was searched in public search space, the exclusive search volume in the exclusive search volume of UE and group: on the one hand, the PDCCH testing mechanism in public search space did not change with respect to the original realization of LTE terminal; On the other hand, because all in all the PDCCH CCE degree of polymerization in the exclusive search volume in the exclusive search volume of UE and group namely still equals 1,2,4,8 by the CCE degree of polymerization successively and searches for without common factor.So total PDCCH detection complexity with the LTE terminal original realization do not compare and to increase, that is altogether need to carry out at most 44 Viterbi decoding in each subframe.
By top embodiment as seen, adopt the embodiment of the invention, terminal can support the PDCCH in the exclusive search volume in the exclusive search volume of UE and group to detect in same subframe simultaneously, and can not increase existing LTE terminal and carry out the complexity of PDCCH blind Detecting, thereby be conducive to existing LTE terminal is transformed to support cluster communication function fast.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. the Check processing method of a Downlink Control Information is used for network side entity, it is characterized in that, comprising:
Dispose respectively the exclusive search volume of group of a special use for the descending multicast channel of the cluster in the trunked communication system of broadband for each group, wherein, the exclusive search volume of this group is identified by cluster wireless network temporary mark T-RNTI;
In the exclusive search volume of described group of configuration, for physical downlink control channel PDCCH is distributed the appointment degree of polymerization, so that colony terminal carries out blind Detecting according to the described appointment degree of polymerization to the PDCCH in the exclusive search volume of described group.
2. method according to claim 1 is characterized in that, distributes for physical downlink control channel PDCCH and specifies the degree of polymerization, comprising:
Each described T-RNTI is added the physical downlink control channel PDCCH of covering distribute a described appointment degree of polymerization, wherein, the described appointment degree of polymerization and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and semi-continuous distribution cell-radio network sign SPS C-RNTI adds the PDCCH degree of polymerization covered without common factor.
3. method according to claim 2 is characterized in that, each described T-RNTI is added after described appointment degree of polymerization of physical downlink control channel PDCCH distribution of covering, also comprises:
Receive on the subframe of the descending multicast channel of cluster at the described colony terminal of needs, select C-RNTI and SPS C-RNTI to add the PDCCH degree of polymerization of covering the degree of polymerization outside the described appointment degree of polymerization.
4. method according to claim 1 is characterized in that, the exclusive search volume of described group disposes in the following manner:
In the exclusive search volume of UE, divide specified search range as the exclusive search volume of described group.
5. according to claim 1 to 4 each described methods, it is characterized in that, each described T-RNTI added the physical downlink control channel PDCCH covered to T-RNTI distribute one to specify after the degree of polymerization, also comprise:
The appointment signaling of setting up in the process by the descending connection of system broadcast message or group issues the described appointment degree of polymerization to colony terminal.
6. according to claim 1 to 4 each described methods, it is characterized in that, also comprise:
Issue indication information to described colony terminal, wherein, this indication information is used to indicate the subframe that needs to receive the descending multicast channel of cluster.
7. the detection method of a Downlink Control Information is used for colony terminal, it is characterized in that, comprising:
Reception comes from the appointment degree of polymerization of network side entity, wherein, this appointment degree of polymerization is that network side entity is for the descending multicast channel of the cluster in the trunked communication system of broadband, in the exclusive search volume of group of configuration, the appointment degree of polymerization for the physical downlink control channel PDCCH distribution, and the exclusive search volume of described group is identified by cluster wireless network temporary mark T-RNTI;
According to the described appointment degree of polymerization PDCCH in the exclusive search volume of described group is carried out blind Detecting.
8. method according to claim 7, it is characterized in that, the described appointment degree of polymerization is described network side entity adds the physical downlink control channel PDCCH distribution of covering to each described T-RNTI the degree of polymerization, and the described appointment degree of polymerization and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI and SPS C-RNTI add the PDCCH degree of polymerization covered without common factor.
9. the Check processing device of a Downlink Control Information is arranged in network side entity, it is characterized in that, comprising:
Configuration module is used for for the descending multicast channel of the cluster of broadband trunked communication system, and for each group disposes respectively the exclusive search volume of group of a special use, wherein, the exclusive search volume of this group is identified by cluster wireless network temporary mark T-RNTI;
Distribution module is used in the exclusive search volume of described group of configuration, distributes for physical downlink control channel PDCCH and specifies the degree of polymerization, and wherein, colony terminal carries out blind Detecting according to the described appointment degree of polymerization to the PDCCH in the exclusive search volume of described group.
10. the checkout gear of a Downlink Control Information is arranged in colony terminal, it is characterized in that, comprising:
Receiver module, be used for receiving the appointment degree of polymerization that comes from network side entity, wherein, this appointment degree of polymerization is that network side entity is for the descending multicast channel of the cluster in the trunked communication system of broadband, in the exclusive search volume of group of configuration, be the degree of polymerization of physical downlink control channel PDCCH distribution, and the exclusive search volume of described group is identified by cluster wireless network temporary mark T-RNTI;
Detection module is used for according to the described appointment degree of polymerization PDCCH in the exclusive search volume of described group being carried out blind Detecting.
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN106550473A (en) * 2015-09-23 2017-03-29 大唐移动通信设备有限公司 A kind of method and device of traffic scheduling
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CN107734468A (en) * 2016-08-12 2018-02-23 中兴通讯股份有限公司 Multicast transmission method and device
CN109076612A (en) * 2016-05-12 2018-12-21 株式会社Ntt都科摩 User terminal and wireless communications method
CN109314617A (en) * 2016-06-30 2019-02-05 英特尔Ip公司 For the fuzzy method avoided of CRC in 5G DCI decoding
TWI683560B (en) * 2017-03-02 2020-01-21 大陸商廣東歐珀移動通信有限公司 User device and method for wireless communication system
WO2020030111A1 (en) * 2018-08-10 2020-02-13 电信科学技术研究院有限公司 Scheduling method, apparatus, base station, terminal and computer readable storage medium
CN111836205A (en) * 2019-04-15 2020-10-27 海能达通信股份有限公司 Multicast service implementation method based on cluster communication and related equipment
CN112839306A (en) * 2021-01-11 2021-05-25 浪潮软件科技有限公司 Method, system and device for transmitting cluster broadcast message supported by 5G NR (noise generation and noise reduction)
WO2022141290A1 (en) * 2020-12-30 2022-07-07 北京小米移动软件有限公司 Parameter determination method, parameter determination apparatus, and storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102333381A (en) * 2011-10-28 2012-01-25 电信科学技术研究院 Resource scheduling and data transmission methods and devices
CN102625457A (en) * 2011-02-01 2012-08-01 中兴通讯股份有限公司 Methods for sending, receiving and transmitting downlink control information and related devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102457929A (en) * 2010-10-15 2012-05-16 电信科学技术研究院 Frequency point migration triggering method and equipment, frequency point migration method and system, and equipment
CN102882644B (en) * 2012-09-21 2015-09-16 中兴通讯股份有限公司 The check processing of Downlink Control Information, detection method and device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102625457A (en) * 2011-02-01 2012-08-01 中兴通讯股份有限公司 Methods for sending, receiving and transmitting downlink control information and related devices
CN102333381A (en) * 2011-10-28 2012-01-25 电信科学技术研究院 Resource scheduling and data transmission methods and devices

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014044176A1 (en) * 2012-09-21 2014-03-27 中兴通讯股份有限公司 Detection processing method and detection method and device for downlink control information
CN104023319B (en) * 2013-02-28 2017-10-10 北京信威通信技术股份有限公司 A kind of method that Large Copacity short data works simultaneously with group service
CN104023319A (en) * 2013-02-28 2014-09-03 北京信威通信技术股份有限公司 High capacity short data and cluster business simultaneous working method
WO2014173355A1 (en) * 2013-08-01 2014-10-30 中兴通讯股份有限公司 Service management method and device
CN104378188A (en) * 2013-08-12 2015-02-25 北京信威通信技术股份有限公司 Downlink control channel processing method, device and system
CN104378188B (en) * 2013-08-12 2019-02-22 北京信威通信技术股份有限公司 A kind of down control channel processing method, device and system
CN104683957A (en) * 2013-12-03 2015-06-03 北京信威通信技术股份有限公司 Downlink control channel processing method, downlink control channel processing device and downlink control channel processing system
CN104683957B (en) * 2013-12-03 2018-12-04 北京信威通信技术股份有限公司 A kind of down control channel processing method, device and system
WO2015135315A1 (en) * 2014-03-14 2015-09-17 中兴通讯股份有限公司 Method and device for adjusting service transmission
CN105472570A (en) * 2014-09-03 2016-04-06 中兴通讯股份有限公司 Base station/terminal and PDCCH scrambling/descrambling method and device thereof
WO2015154611A1 (en) * 2014-09-19 2015-10-15 中兴通讯股份有限公司 Method and device for transmitting multi-service control channel
WO2016058345A1 (en) * 2014-10-15 2016-04-21 中兴通讯股份有限公司 Downlink control information (dci) detection method and apparatus
CN106550473A (en) * 2015-09-23 2017-03-29 大唐移动通信设备有限公司 A kind of method and device of traffic scheduling
CN106550473B (en) * 2015-09-23 2020-09-25 大唐移动通信设备有限公司 Service scheduling method and device
CN109076612B (en) * 2016-05-12 2023-08-29 株式会社Ntt都科摩 Terminal, base station, system, and wireless communication method
CN109076612A (en) * 2016-05-12 2018-12-21 株式会社Ntt都科摩 User terminal and wireless communications method
CN109314617A (en) * 2016-06-30 2019-02-05 英特尔Ip公司 For the fuzzy method avoided of CRC in 5G DCI decoding
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CN107734468B (en) * 2016-08-12 2020-07-28 中兴通讯股份有限公司 Multicast transmission method and device
US10952033B2 (en) 2016-08-12 2021-03-16 Zte Corporation Multicast transmission method and apparatus, and computer storage medium
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