CN102387588B - The dispatching method of Downlink Control Information and device - Google Patents
The dispatching method of Downlink Control Information and device Download PDFInfo
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Abstract
The invention discloses a kind of dispatching method and device of Downlink Control Information.The method comprises: base station is the radio resource control layer configuration emission mode of subscriber equipment, and wherein, this emission mode supports the switching at runtime of descending SU-MIMO and MU-MIMO; Base station is special the 2nd C-RNTI of the switching at runtime of a C-RNTI of the radio resource control layer configure generic of subscriber equipment and descending SU-MIMO and MU-MIMO; Base station adopts one of a C-RNTI and the 2nd C-RNTI to send to the Downlink Control Information of subscriber equipment with the scheduling of above-mentioned emission mode, distributes type or the C-RNTI indexed resource that passes through to adopt distributes type by the resource allocation type flag indexed resource comprised in the C-RNTI that adopts and Downlink Control Information.By the present invention, SU-MIMO and the MU-MIMO switching at runtime of various resource allocation type can be supported.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of dispatching method and device of Downlink Control Information.
The Long Term Evolution (referred to as LTE-Advanced) of the advanced person of 3G (Third Generation) Moblie partner program supports single user multiple-input and multiple-output (referred to as SU-MIMO) and multi-user's multiple-input and multiple-output (referred to as MU-MIMO) switching at runtime function.
Point out in the work report first draft of 3GPP wireless access network first working group (RANWG1) in its 61Bis time meeting, SU-MIMO and MU-MIMO switching at runtime uses the method for transparent transmission (that is, a user do not know that another one user uses the frequency resource identical with it) realization.
5.3.3.1.4A according to 3GPPTS36.212V9.1.0 saves, and the Physical Downlink Control Channel (referred to as PDCCH) of the Downlink Control Information (referred to as DCI1D) that the physical layer of base station (referred to as eNB) launches 1D form can to subscriber equipment (hereinafter referred to as UE) is to dispatch this UE.In this case, be localized virtual resource block (referred to as LVRB) or distributed virtual resource block (referred to as DVRB) to the resource allocation type of this UE.UE is in MU-MIMO emission mode (non-transparent transmission type; That is, a user knows that another one user uses the frequency resource identical with it).
5.3.3.1.5 according to 3GPPTS36.212V9.1.0 saves, and the physical layer of eNB can launch the PDCCH channel of the Downlink Control Information (DCI2) of form 2 to dispatch this UE to UE.Carry out indexed resource by the dedicated bit of in DCI2 and distribute type, if this bit is 0 namely represent type 0 Resourse Distribute, otherwise represent Class1 Resourse Distribute.In this case, be type 0 mode (Type0 to the resource allocation type of this UE; Divide according to Resource Block group (referred to as RBG)) or Class1 mode (Type1; Divide according to single resource block (referred to as RB)).If transmit 2 coded words to this UE, then this UE is in SU-MIMO emission mode.
5.3.3.1.5B according to 3GPPTS36.212V9.1.0 saves, and the physical layer of eNB can launch the PDCCH channel of the Downlink Control Information (DCI2B) of 2B form to dispatch this UE to UE.When system bandwidth is more than 10 RB, carrys out indexed resource by the dedicated bit of in DCI2B and distribute type, if this bit is 0 namely represent type 0 Resourse Distribute, otherwise represent Class1 Resourse Distribute.When system bandwidth is less than or equal to 10 RB, be fixed as type 0 Resourse Distribute.In this case, be type 0 mode (Type0 to the resource allocation type of this UE; Divide according to Resource Block group (RBG)) or Class1 mode (Type1; Divide according to single RB; The Type0 method of salary distribution is only had) when system bandwidth is no more than 10 RB.If transmit 2 coded words to this UE, then this UE is in SU-MIMO emission mode.If respectively transmit a coded word to 2 UE simultaneously, then these 2 UE are in MU-MIMO emission mode (transparent transmission type).
Inventor finds, transparent transmission type SU-MIMO and the MU-MIMO switching at runtime of 3GPPR9 version only support Type0 and Type1 resource allocation type, does not support Type2 resource allocation type (comprise LVRB and DVRB and distribute type).Thus the interference between SU-MIMO and the MU-MIMO switching at runtime of various resource allocation type, user is larger to cause LTE-Advanced system not support.
Summary of the invention
Main purpose of the present invention is the dispatching method and the device that provide a kind of Downlink Control Information, at least to solve the problem that above-mentioned LTE-Advanced system can not support SU-MIMO and the MU-MIMO switching at runtime of various resource allocation type.
According to an aspect of the present invention, provide a kind of dispatching method of Downlink Control Information, comprising: base station is the radio resource control layer configuration emission mode of subscriber equipment, and wherein, this emission mode supports the switching at runtime of descending SU-MIMO and MU-MIMO; Base station is special the 2nd C-RNTI of the switching at runtime of a C-RNTI of the radio resource control layer configure generic of subscriber equipment and descending SU-MIMO and MU-MIMO; Base station adopts one of a C-RNTI and the 2nd C-RNTI to send to the Downlink Control Information of subscriber equipment with the scheduling of above-mentioned emission mode, distributes type or the C-RNTI indexed resource that passes through to adopt distributes type by the resource allocation type flag indexed resource comprised in the C-RNTI that adopts and Downlink Control Information.
According to a further aspect in the invention, provide a kind of dispatching device of Downlink Control Information, comprising: the first configuration module, for the radio resource control layer configuration emission mode for subscriber equipment, wherein, this emission mode supports the switching at runtime of descending SU-MIMO and MU-MIMO; Second configuration module, for a C-RNTI of the radio resource control layer configure generic for subscriber equipment and special the 2nd C-RNTI of the switching at runtime of descending SU-MIMO and MU-MIMO; Scheduler module, for adopting one of a C-RNTI and the 2nd C-RNTI to send to the Downlink Control Information of subscriber equipment with the scheduling of above-mentioned emission mode, distribute type by the resource allocation type flag indexed resource comprised in the C-RNTI that adopts and Downlink Control Information or the C-RNTI indexed resource that passes through to adopt distributes type.
Pass through the present invention, base station is by the wireless netting twine temporary mark (referred to as C-RNTI) in configuration Liang Ge community, with these two C-RNTI in conjunction with resource allocation type flag joint instructions resource allocation type, thus make system can support the Resourse Distribute of various resource allocation type, solve the problem that LTE-Advanced system can not support SU-MIMO and the MU-MIMO switching at runtime of various resource allocation type, thus the interference that can reduce under SU-MIMO and MU-MIMO pattern between same intra-cell users, improve the capacity of system.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the dispatching method of Downlink Control Information according to the embodiment of the present invention;
Fig. 2 is the flow chart according to the embodiment of the present invention one;
Fig. 3 is the flow chart according to the embodiment of the present invention two;
Fig. 4 is the flow chart according to the embodiment of the present invention three;
Fig. 5 is the structural representation of the dispatching device of Downlink Control Information according to the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
According to the dispatching method embodiments providing a kind of Downlink Control Information, Fig. 1 is the flow chart of the method, and as shown in Figure 1, the method mainly comprises the following steps (step S102-step S106):
Step S102, base station is the radio resource control layer configuration emission mode of subscriber equipment, and wherein, this emission mode of base station configuration supports the switching at runtime of descending SU-MIMO and MU-MIMO;
Such as, base station can by its radio resource control layer to a kind of emission mode supporting descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime of the radio resource control layer of subscriber equipment configuration, thus make subscriber equipment can know the emission mode that base station adopts.
Step S104, base station is special the 2nd C-RNTI of the switching at runtime of the C-RNTI (or also can be called conventional C-RNTI) of the radio resource control layer configure generic of subscriber equipment and descending SU-MIMO and MU-MIMO;
Such as, base station can configure a Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (i.e. above-mentioned 2nd C-RNTI) for 16 bits of descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime by its radio resource control layer to the radio resource control layer of subscriber equipment, also configures the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (i.e. an above-mentioned C-RNTI) of conventional 16 bits in addition.
Step S106, base station adopts one of above-mentioned C-RNTI and the 2nd C-RNTI to send to the Downlink Control Information of subscriber equipment with above-mentioned emission mode scheduling, distributes type or the C-RNTI indexed resource that passes through to adopt distributes type by the resource allocation type flag indexed resource comprised in the C-RNTI that adopts and Downlink Control Information.
Wherein, if system bandwidth is no more than predetermined quantity (such as, 10) Physical Resource Block, then do not comprise resource allocation type flag in Downlink Control Information, base station is carried out indexed resource by the C-RNTI that it adopts and is distributed type, such as, if base station adopts an above-mentioned C-RNTI dispatching downlink control information, then indexed resource distributes type is type 0, if base station adopts above-mentioned 2nd C-RNTI dispatching downlink control information, then indexed resource distributes the localized resource blocks distribution type that type is type 2.
When system bandwidth a predetermined level is exceeded (such as, 10) Physical Resource Block, then comprise resource allocation type flag in Downlink Control Information, then the resource allocation type flag joint instructions resource allocation type of base station by comprising in its C-RNTI adopted and Downlink Control Information.Such as, base station adopts a C-RNTI dispatching downlink control information, if the resource allocation type flag value comprised in Downlink Control Information is the first predetermined value, then indexed resource distributes type is type 0, otherwise it is Class1 that indexed resource distributes type; Base station adopts the 2nd C-RNTI dispatching downlink control information, the resource allocation type flag value comprised in Downlink Control Information is the first predetermined value, then indexed resource distributes the localized resource blocks distribution type that type is type 2, otherwise indexed resource distributes the distributed resource blocks distribution type that type is type 2.
Resource allocation type flag can take 1 bit, also can take multiple bit, and preferably, resource allocation type flag only can take 1 bit.
Such as, Downlink Control Information can adopt form below:
The resource allocation type head (i.e. above-mentioned resource allocation type flag) of (1) 1 bit.If system bandwidth is no more than 10 Physical Resource Block and the conventional Cell Radio Network Temporary Identifier/Identity, Cell-RNTI in base station is dispatched, then this bit does not exist and resource allocation type is fixed as type 0 Resourse Distribute.If system bandwidth be no more than 10 Physical Resource Block and base station adopt dispatch for the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime, then this bit do not exist and resource allocation type be fixed as type 2 localized resource blocks distribution type.If system bandwidth is dispatched more than the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of 10 Physical Resource Block, base station routine and this bit is " 0 ", then this bit represents that resource allocation type is type 0 Resourse Distribute.If system bandwidth is dispatched more than the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of 10 Physical Resource Block, base station routine and this bit is " 1 ", then this bit represents that resource allocation type is Class1 Resourse Distribute.If system bandwidth more than 10 Physical Resource Block, base station adopts the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI for descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to dispatch and this bit is " 0 ", so this bit represents that resource allocation type is the localized resource blocks distribution type of type 2.If system bandwidth more than 10 Physical Resource Block, base station adopts the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI for descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to dispatch and this bit is " 1 ", so this bit represents that resource allocation type is the distributed resource blocks distribution type of type 2;
(2)
bit resources block assignment information, wherein Ceil () is upper floor operation,
for the system bandwidth represented in units of Resource Block, the resource block number that P comprises for a Resource Block group.For resource allocation type 0,
the bitmap of bit composition just gives resource block assignments information.For resource allocation type 1, Ceil (log
2(P)) bit represents to which group of the Resource Block of this user equipment allocation in P group, wherein log
2() represents the operation of getting with 2 logarithms that are the end, and it is distribute from the left side or distribute from the right that another one bit specifies to the Resource Block of this user equipment allocation, in addition
the bitmap of bit composition just gives resource block assignments information.For resource allocation type 2, a bit represents antenna port information or represents orthogonal sequence information or be fixedly filled to " 0 ",
bit is used for the Resourse Distribute of type 2, and other
bit is fixedly filled to " 0 ";
(3) 2 bits are used for the power control command of ascending physical signal control channel;
(4) 2 bits are used for the descending allocation index of tdd systems.Frequency division duplex system does not have this 2 bit;
(5) for 3 bits or 4 bits of hybrid automatic repeat request process number.Wherein, tdd systems 4 bits, frequency division duplex system 3 bits;
The transmission block exchange message of (6) bits;
(7) 5 bits are used for the Modulation and Coding Scheme of expression first transmission block;
(8) bits are used for the new data instruction of expression first transmission block;
(9) 2 bits are used for the redundant version number of expression first transmission block;
(10) 5 bits are used for the Modulation and Coding Scheme of expression second transmission block;
(11) bits are used for the new data instruction of expression second transmission block;
(12) 2 bits are used for the redundant version number of expression second transmission block; And
(13) precoding information of some bits.
In actual applications, subscriber equipment after receiving the above-mentioned Downlink Control Information that base station sends, the Downlink Control Information that an above-mentioned C-RNTI of above-mentioned base station configuration and the 2nd C-RNTI blind check receive.
Such as, if subscriber equipment adopts conventional Cell Radio Network Temporary Identifier/Identity, Cell-RNTI to carry out successfully decoded, and system bandwidth is no more than 10 Physical Resource Block, then resource allocation type is type 0 Resourse Distribute and does not have resource allocation type bit.If subscriber equipment carrys out successfully decoded with the above-mentioned Cell Radio Network Temporary Identifier/Identity, Cell-RNTI for descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime and system bandwidth is no more than 10 Physical Resource Block, then subscriber equipment determination resource allocation type is that the localized resource blocks of type 2 is distributed type and do not have resource allocation type bit.
If the conventional Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of subscriber equipment come successfully decoded, system bandwidth more than 10 Physical Resource Block and resource allocation type head bit be above-mentioned first predetermined value (such as, " 0 "), then resource allocation type is type 0 Resourse Distribute.If the conventional Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of subscriber equipment come successfully decoded, system bandwidth more than 10 Physical Resource Block and resource allocation type head bit be the second predetermined value (such as, " 1 "), then resource allocation type is Class1 Resourse Distribute.
If subscriber equipment with the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime come successfully decoded, system bandwidth more than 10 Physical Resource Block and resource allocation type head bit be above-mentioned first predetermined value (such as, " 0 "), then subscriber equipment determination resource allocation type is the localized resource blocks distribution type of type 2.If subscriber equipment with the above-mentioned Cell Radio Network Temporary Identifier/Identity, Cell-RNTI for descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime come successfully decoded, system bandwidth more than 10 Physical Resource Block and resource allocation type head bit be the second predetermined value (such as, " 1 "), then resource allocation type is the distributed resource blocks distribution type of type 2.
Then, subscriber equipment can decode other bits of Downlink Control Information according to resource allocation type, and receives according to above-mentioned blind check Downlink Control Information out the data that Physical Downlink Shared Channel transmits.
By the said method that the embodiment of the present invention provides, all resource block assignments types can be supported, thus interference between same intra-cell users can be reduced under multi-user multiple input multiple output mode, under single user MIMO mode, reduce interference between different districts between user, obtain higher power system capacity and completely compatible with existing system.
Be described below by specific embodiment.
Embodiment one
The present embodiment is launched with 20MHz system (100 RB), MU-MIMO mode, use DVRB, is emitted as example to be described with antenna port 9.
Fig. 2 is the process chart of the present embodiment, as shown in Figure 2, mainly comprises the following steps:
Step S202, the radio resource control layer of base station is configured to a kind of emission mode supporting descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to the radio resource control layer of subscriber equipment;
Step S204, the radio resource control layer of base station configures a Cell Radio Network Temporary Identifier/Identity, Cell-RNTI 0x0100 for 16 bits of descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to the radio resource control layer of subscriber equipment, also configures the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI 0x0101 of conventional 16 bits in addition;
Step S206, base station mark 0x0100 are the Downlink Control Information of form below dispatching user facility:
Resource allocation type head bit is set to " 1 ";
25 bit resources block assignment information; A bit is set to " 0 " to represent antenna port 9, and 11 bit paddings are " 0 ", and 13 bits are used for the Resourse Distribute of DVRB;
2 bits are used for the power control command of ascending physical signal control channel;
2 bits are used for the descending allocation index of tdd systems; Frequency division duplex system does not have this 2 bit;
For 3 bits or 4 bits of hybrid automatic repeat request process number; Wherein, tdd systems 4 bits, frequency division duplex system 3 bits;
The transmission block exchange message of a bit;
5 bits are used for the Modulation and Coding Scheme of expression first transmission block;
Bit is used for the new data instruction of expression first transmission block;
2 bits are used for the redundant version number of expression first transmission block;
5 bits are used for the Modulation and Coding Scheme of expression second transmission block;
Bit is used for the new data instruction of expression second transmission block;
2 bits are used for the redundant version number of expression second transmission block; And
The precoding information of some bits.
Step S208, subscriber equipment carrys out the Downlink Control Information of the above-mentioned form of blind check according to above-mentioned two Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, specific as follows;
Subscriber equipment tries to decode with mark 0x0101, failure; Subscriber equipment tries to decode with mark 0x0100, success.
Subscriber equipment, with decoding resource allocation type head bit for " 1 ", in conjunction with mark 0x0101, thus determines that resource allocation type is DVRB;
Subscriber equipment, with decoding antenna port information bit for " 0 ", in conjunction with resource allocation type, thus determines that transmitting antenna port is port 9;
Subscriber equipment decodes other bits of Downlink Control Information.
Step S210, subscriber equipment receives according to above-mentioned blind check above-mentioned Downlink Control Information out the data that Physical Downlink Shared Channel transmits.
By the present embodiment, DVRB resource block assignments type can be supported, interference between same intra-cell users can be reduced under multi-user multiple input multiple output mode, obtain higher power system capacity and completely compatible with existing system.
Embodiment two
The present embodiment is launched with 10MHz system (50 RB), SU-MIMO mode, is used Type0 resource allocation type to be described to be emitted as example.
Fig. 3 is the process chart of the present embodiment, as shown in Figure 3, mainly comprises the following steps:
Step S302, the radio resource control layer of base station is configured to a kind of emission mode supporting descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to the radio resource control layer of subscriber equipment;
Step S304, the radio resource control layer of base station configures the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI 0x1233 that is exclusively used in 16 bits of descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to the radio resource control layer of subscriber equipment, also configures the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI 0x1235 of conventional 16 bits in addition;
Step S306, the base station Downlink Control Information of mark 0x1235 to form below dispatching user facility:
Resource allocation type head bit is set to " 0 ";
17 bit resources block assignment information.For the Resourse Distribute of Type0;
2 bits are used for the power control command of ascending physical signal control channel;
2 bits are used for the descending allocation index of tdd systems.Frequency division duplex system does not have this 2 bit;
For 3 bits or 4 bits of hybrid automatic repeat request process number.Wherein, tdd systems 4 bits, frequency division duplex system 3 bits;
The transmission block exchange message of a bit;
5 bits are used for the Modulation and Coding Scheme of expression first transmission block;
Bit is used for the new data instruction of expression first transmission block;
2 bits are used for the redundant version number of expression first transmission block;
5 bits are used for the Modulation and Coding Scheme of expression second transmission block;
Bit is used for the new data instruction of expression second transmission block;
2 bits are used for the redundant version number of expression second transmission block;
The precoding information of some bits;
Step S308, subscriber equipment carrys out the Downlink Control Information of the above-mentioned form of blind check according to above-mentioned two Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, specific as follows;
Subscriber equipment tries to decode with mark 0x1233, failure.Subscriber equipment tries to decode with mark 0x1235, success.
Subscriber equipment, with decoding resource allocation type head bit for " 0 ", combines and identifies 0x1235, therefore to be aware of resource allocation type be Type0.
Subscriber equipment decodes other bits of Downlink Control Information.
Step S310, subscriber equipment receives the data of Physical Downlink Shared Channel transmission according to above-mentioned blind check above-mentioned Downlink Control Information out.
By the present embodiment, Type0 resource block assignments type can be supported, obtain higher power system capacity completely compatible with existing system.
Embodiment three
The present embodiment is launched with 5MHz system (25 RB), SU-MIMO mode, is used DVRB to be emitted as example to be described.
Fig. 4 is the process chart of the present embodiment, as shown in Figure 4, mainly comprises the following steps:
Step S402, the radio resource control layer of base station is configured to a kind of emission mode supporting descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to the radio resource control layer of subscriber equipment;
Step S404, the radio resource control layer of base station configures a Cell Radio Network Temporary Identifier/Identity, Cell-RNTI 0x2345 for 16 bits of descending single user multiple-input and multiple-output and multi-user's multiple-input and multiple-output switching at runtime to the radio resource control layer of subscriber equipment, also configures the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI 0x2346 of conventional 16 bits in addition;
Step S406, the base station Downlink Control Information of mark 0x2345 to form below dispatching user facility:
Resource allocation type head bit is set to " 1 ";
13 bit resources block assignment information.One of them bit is set to " 0 ", and 3 bit paddings are " 0 ", and the resource that 9 bits are used for DVRB is divided;
2 bits are used for the power control command of ascending physical signal control channel;
2 bits are used for the descending allocation index of tdd systems.Frequency division duplex system does not have this 2 bit.
For 3 bits or 4 bits of hybrid automatic repeat request process number.Wherein, tdd systems 4 bits, frequency division duplex system 3 bits;
The transmission block exchange message of a bit;
5 bits are used for the Modulation and Coding Scheme of expression first transmission block;
Bit is used for the new data instruction of expression first transmission block;
2 bits are used for the redundant version number of expression first transmission block;
5 bits are used for the Modulation and Coding Scheme of expression second transmission block;
Bit is used for the new data instruction of expression second transmission block;
2 bits are used for the redundant version number of expression second transmission block; And
The precoding information of some bits.
Step S408, subscriber equipment carrys out the Downlink Control Information of the above-mentioned form of blind check according to above-mentioned two Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs, specific as follows:
Subscriber equipment tries to decode with mark 0x2346, failure.Subscriber equipment tries to decode with mark 0x2345, success.
Subscriber equipment, with decoding resource allocation type head bit for " 1 ", combines and identifies 0x2345, therefore to be aware of resource allocation type be DVRB;
Subscriber equipment decodes other bits of Downlink Control Information.
Step S410, subscriber equipment receives the data of Physical Downlink Shared Channel transmission according to above-mentioned blind check above-mentioned Downlink Control Information out.
By the present embodiment, DVRB resource block assignments type can be supported, interference between different districts between user can be reduced under single user MIMO mode, obtain higher power system capacity and completely compatible with existing system.
The embodiment of the present invention additionally provides a kind of dispatching device of Downlink Control Information, and this device is positioned at base station, may be used for the dispatching method realizing the above-mentioned Downlink Control Information that the embodiment of the present invention provides.
Fig. 5 is the structural representation of the dispatching device of Downlink Control Information according to the embodiment of the present invention, and as shown in Figure 5, this device comprises: the first configuration module 10, second configuration module 20 and scheduler module 30.Wherein, the first configuration module 10, for the radio resource control layer configuration emission mode for subscriber equipment, wherein, this emission mode supports the switching at runtime of descending SU-MIMO and MU-MIMO; Second configuration module 20, for a C-RNTI of the radio resource control layer configure generic for subscriber equipment and special the 2nd C-RNTI of the switching at runtime of descending SU-MIMO and MU-MIMO; Scheduler module 30, for adopting one of a C-RNTI and the 2nd C-RNTI to send to the Downlink Control Information of subscriber equipment with the scheduling of above-mentioned emission mode, distribute type by the resource allocation type flag indexed resource comprised in the C-RNTI that adopts and Downlink Control Information or the C-RNTI indexed resource that passes through to adopt distributes type.
Wherein, scheduler module 30 can adopt the mode indexed resource of foregoing description to distribute type, and Downlink Control Information also can adopt above-mentioned form.Concrete similar to above-mentioned description, do not repeat them here.
By the said apparatus that the embodiment of the present invention provides, all resource block assignments types can be supported.
From above description, can find out, by the technical scheme that the embodiment of the present invention provides, all resource block assignments types can be supported, interference between same intra-cell users can be reduced under multi-user multiple input multiple output mode, interference between different districts between user can be reduced under single user MIMO mode, obtain higher power system capacity.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a dispatching method for Downlink Control Information, is characterized in that, comprising:
Base station is the radio resource control layer configuration emission mode of subscriber equipment, and wherein, described emission mode supports the switching at runtime of descending single user multiple-input and multiple-output SU-MIMO and multi-user's multiple-input and multiple-output MU-MIMO;
Described base station is special the 2nd C-RNTI of the switching at runtime of the first Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of the radio resource control layer configure generic of described subscriber equipment and descending SU-MIMO and MU-MIMO;
Described base station adopts one of a described C-RNTI and described 2nd C-RNTI to send to the Downlink Control Information of described subscriber equipment with described emission mode scheduling, is distributed type by the resource allocation type flag indexed resource comprised in the C-RNTI that adopts and described Downlink Control Information or is indicated described resource allocation type by the C-RNTI adopted.
2. method according to claim 1, is characterized in that, when system bandwidth is no more than the Physical Resource Block of predetermined quantity, does not comprise described resource allocation type flag in described Downlink Control Information; Type is distributed by the C-RNTI indexed resource adopted in described base station.
3. method according to claim 2, is characterized in that, described base station is distributed type by the C-RNTI indexed resource adopted and comprised:
Described base station adopts a described C-RNTI execution cost Downlink Control Information, indicates described resource allocation type to be type 0; Or
Described base station adopts described 2nd C-RNTI execution cost Downlink Control Information, indicates described resource allocation type to be that the localized resource blocks of type 2 distributes type.
4. method according to claim 1, is characterized in that, when the Physical Resource Block of system bandwidth a predetermined level is exceeded, comprises described resource allocation type flag in described Downlink Control Information; Described base station by adopt C-RNTI and described resource allocation type flag indicate described resource allocation type.
5. method according to claim 4, is characterized in that, the described C-RNTI by employing and described resource allocation type flag indicate described resource allocation type to comprise:
Described base station adopts a described C-RNTI execution cost Downlink Control Information, if described resource allocation type flag value is the first predetermined value, then indicates described resource allocation type to be type 0, otherwise, indicate described resource allocation type to be Class1; Or
Described base station adopts described 2nd C-RNTI execution cost Downlink Control Information, if described resource allocation type flag value is the first predetermined value, then indicate described resource allocation type be type 2 localized resource blocks distribute type, otherwise, indicate described resource allocation type be type 2 distributed resource blocks distribute type.
6. method according to claim 5, is characterized in that, described resource allocation type flag takies 1 bit.
7. method according to any one of claim 1 to 6, is characterized in that, also includes resource block assignments information in described Downlink Control Information, and described resource block assignments information takies
individual bit, wherein, Ceil () is the operation that rounds up,
for the system bandwidth represented in units of Resource Block, the resource block number that P comprises for a Resource Block group.
8. method according to claim 7, is characterized in that,
If described resource allocation type is type 0, then described in
individual bit is used to indicate described resource block assignments information;
If described resource allocation type is Class1, then described in
ceil (log in individual bit
2(P)) individual bit is used to indicate which group of Resource Block in P group into described user equipment allocation, described in
the Resource Block that another one bit in individual bit is used to indicate as described user equipment allocation distributes from the left side or distributes from the right, described in
all the other in individual bit
individual bit is used to indicate described resource block assignments information;
If described resource allocation type is type 2, then described in
a bit in individual bit is used to indicate antenna port information or orthogonal sequence information or is fixedly filled to 0, described in
in individual bit
individual bit is used to indicate described resource block assignments information.
9. method according to claim 8, is characterized in that, if described resource allocation type is type 2, described in
all the other in individual bit
individual bit is fixedly filled to 0.
10. method according to any one of claim 1 to 6, is characterized in that, after Downlink Control Information described in described base station scheduling, described method also comprises:
Described subscriber equipment adopts a described C-RNTI and described 2nd C-RNTI to decode to described Downlink Control Information, obtains described Downlink Control Information;
Described subscriber equipment receives the data that Physical Downlink Shared Channel sends according to described Downlink Control Information.
11. methods according to claim 10, is characterized in that, described subscriber equipment adopts a described C-RNTI and described 2nd C-RNTI to decode to described Downlink Control Information, comprising:
Described subscriber equipment uses a described C-RNTI and described 2nd C-RNTI to decode to described Downlink Control Information,
If described subscriber equipment uses a described C-RNTI successfully decoded, and system bandwidth is no more than the Physical Resource Block of predetermined quantity, then described subscriber equipment determines that described resource allocation type is type 0, and does not comprise described resource allocation type flag in described Downlink Control Information;
If described subscriber equipment is used in described 2nd C-RNTI successfully decoded, and system bandwidth is no more than the Physical Resource Block of described predetermined quantity, then described subscriber equipment determines that described resource allocation type is the localized resource blocks distribution type of type 2, and does not comprise described resource allocation type flag in described Downlink Control Information;
If described subscriber equipment uses a described C-RNTI successfully decoded, and system bandwidth exceedes the Physical Resource Block of described predetermined quantity, if the value of the described resource allocation type flag of described Downlink Control Information is the first predetermined value, then described subscriber equipment determines that described resource allocation type is type 0, if the value of described resource allocation type flag is the second predetermined value, then described subscriber equipment determines that described resource allocation type is Class1;
If described subscriber equipment uses described 2nd C-RNTI successfully decoded, and system bandwidth exceedes the Physical Resource Block of described predetermined quantity, if the value of described resource allocation type flag is described first predetermined value, then described resource allocation type is the localized resource blocks distribution type of type 2, if value second predetermined value of described resource allocation type flag, then described resource allocation type is the distributed resource blocks distribution type of type 2.
The dispatching device of 12. 1 kinds of Downlink Control Information, is characterized in that, comprising:
First configuration module, for the radio resource control layer configuration emission mode for subscriber equipment, wherein, described emission mode supports the switching at runtime of descending SU-MIMO and MU-MIMO;
Second configuration module, for a C-RNTI of the radio resource control layer configure generic for described subscriber equipment and special the 2nd C-RNTI of the switching at runtime of descending SU-MIMO and MU-MIMO;
Scheduler module, for adopting one of a described C-RNTI and described 2nd C-RNTI to send to the Downlink Control Information of described subscriber equipment with the scheduling of described emission mode, distributing type by the resource allocation type flag indexed resource comprised in the C-RNTI that adopts and described Downlink Control Information or indicating described resource allocation type by the C-RNTI adopted.
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| CN103581869B (en) * | 2012-08-03 | 2018-11-09 | 中兴通讯股份有限公司 | control information processing method and device |
| WO2017132955A1 (en) * | 2016-02-04 | 2017-08-10 | 华为技术有限公司 | Control information transmission method, base station, and terminal |
| CN107295691A (en) * | 2017-07-10 | 2017-10-24 | 武汉米风通信技术有限公司 | Location information passback dispatching method based on ultra-narrow band |
| CN111699735B (en) * | 2018-02-13 | 2023-12-15 | 华为技术有限公司 | Information indication method and related equipment |
| WO2021159254A1 (en) * | 2020-02-10 | 2021-08-19 | 北京小米移动软件有限公司 | Dci transmission method and apparatus, and communication device and storage medium |
| US20230224930A1 (en) * | 2020-07-29 | 2023-07-13 | Qualcomm Incorporated | Multicast grants to user equipment of different capabilities using a single downlink control information |
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| CN101631374A (en) * | 2009-08-05 | 2010-01-20 | 中兴通讯股份有限公司 | Indication method and indication device of downlink transmission mode |
| CN101695009A (en) * | 2009-10-15 | 2010-04-14 | 中兴通讯股份有限公司 | System for sending descending control information format and method |
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| CN101631374A (en) * | 2009-08-05 | 2010-01-20 | 中兴通讯股份有限公司 | Indication method and indication device of downlink transmission mode |
| CN101695009A (en) * | 2009-10-15 | 2010-04-14 | 中兴通讯股份有限公司 | System for sending descending control information format and method |
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