CN104104636A - Method of configuring physical resources for PBCH based on DM-RS demodulation - Google Patents
Method of configuring physical resources for PBCH based on DM-RS demodulation Download PDFInfo
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Abstract
The invention provides a method of configuring physical resources for a PBCH based on DM-RS demodulation in a communication environment based on an independent new carrier type, and a method for performing DM-RS-based demodulation on the PBCH and a common search space. According to the optimal embodiment of the invention, the PBCH at least comprises common search space configuration information which is used for assisting user equipment to confirm intervals of physical resource block pairs used by common search space of an independent new carrier type community in which the user equipment is located. Besides, on the physical resource block pairs, resource elements used by the PBCH are distributed on OFDM symbols in which the DM-RS is located, or the resource elements used by the PBCH are distributed on the OFDM symbols in which the DM-RS is located or on the OFDM symbols adjacent to the OFDM symbols in which the DM-RS is located. The scheme that DM-RS-based demodulation is provided for the independent new carrier type is realized, and support is provided for acquisition of common search space at initial access of the user equipment.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of in the communication environment based on new carrier type independently the method for the PBCH configures physical resource based on DM-RS demodulation, a kind of method that PBCH and public search space are carried out to the demodulation based on DM-RS.
Background technology
In the Release11 of LTE-Advanced and following Release12, introduced the supportive and power saving that new carrier type (New Carrier Type, NCT) improves spectrum efficiency, heterogeneous network in the situation that not limiting backwards compatibility.For newly-designed new carrier type, this just means that some traditional channels (such as public reference signal CRS, Physical Broadcast Channel PBCH, synchronizing channel etc.) can be removed or partly remove, to realize more effective frequency efficiency.At present, in RAN1, for this motion, there are two subjects under discussion, one is dependent new carrier type (non-standalone NCT), and itself and traditional carrier wave have overlapping covering, and another is new carrier type (standalone NCT) independently.
For the latter, independently new carrier type can be used in main carrier, and supports the initial access for this carrier wave.According to the independently new definition of carrier wave and the conferencing policy of current RAN1, for new carrier type independently, CRS will no longer have demodulation function.In addition, for new carrier type independently, also unavailable for the network assistance from macrocell of initial access.
Therefore, need to rethink the common signal channel in some physical layers of design.Because as mentioned above, if CRS no longer has demodulation function, (or CRS becomes sparse, even if exist, also no longer can be used in demodulation), and there is not assisting across cell/carrier from traditional carrier wave yet, in this case, original common signal channel based on CRS demodulation, for example PBCH and public search space (common search space) also need to adjust accordingly.
Summary of the invention
Based on above-mentioned, consider, for new carrier type independently, the present invention proposes a kind of method that PBCH and public search space are carried out to the demodulation based on DM-RS, and correspondingly provided a kind of in the communication environment based on new carrier type independently the method for the PBCH configures physical resource based on DM-RS demodulation.
According to a first aspect of the invention, proposed a kind of in the communication environment based on new carrier type independently the method for the PBCH configures physical resource based on DM-RS demodulation, wherein, described PBCH at least comprises public search space configuration information, described public search space configuration information determines for assisting user equipment the right interval of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used, described method comprises: Physical Resource Block on, the resource element that described PBCH is used (Resource Element) is distributed on the residing OFDM symbol of DM-RS, or the resource element that described PBCH is used is distributed on the residing OFDM symbol of DM-RS and on the OFDM symbol adjacent with the residing OFDM symbol of described DM-RS.
At this, based on DM-RS, carry out the demodulation to PBCH.The resource element taking by the contiguous DM-RS of resource element that PBCH is used settles to improve the demodulation performance of DM-RS.In addition,, in order to make subscriber equipment support for the independently initial access of new carrier type, in PBCH, will comprise public search space configuration information.
Preferably, described Physical Resource Block on, OFDM symbol 12 and subcarrier 1,6,11 corresponding resource elements and OFDM symbol 13 and subcarrier 1,6,11 corresponding resource elements are distributed to DM-RS, and remaining resource element on all resource elements on OFDM symbol 11 and described OFDM symbol 12,13 is distributed to described PBCH.
At this, do not change original PSS/SSS (master sync signal/auxiliary synchronous signals) in the position of Physical Resource Block centering, and Physical Resource Block centering, distributed the position of new resource element for PBCH.
Preferably, described Physical Resource Block on, for SSS distributes all resource elements on OFDM symbol 1, for PSS distributes all resource elements on OFDM symbol 2, by OFDM symbol 5 and subcarrier 1, 6, 11 corresponding resource elements, OFDM symbol 6 and subcarrier 1, 6, 11 corresponding resource elements, OFDM symbol 12 and subcarrier 1, 6, 11 corresponding resource elements and OFDM symbol 13 and subcarrier 1, 6, 11 corresponding resource elements are distributed to DM-RS, and by described OFDM symbol 5, 6, 12, on 13, remaining resource element is distributed to described PBCH.
At this, changed the position of PSS/SSS Physical Resource Block centering, and Physical Resource Block centering, distributed the position of new resource element for PBCH.
According to a second aspect of the invention, proposed a kind of method of in subscriber equipment, PBCH and public search space being carried out to the demodulation based on DM-RS, described method comprises: B. judges that whether cell type is new carrier type community independently; C. when described cell type is described independently new carrier type community, from base station, receive DM-RS sequence, wherein said DM-RS sequence is formed by take the Rank-1 precoding mode precoding that code book index number is benchmark as the precoding of O in code book by described base station, and by described base station by antenna port 7 and 8 transmission; And the Rank-1 precoding mode of D. based on predetermined, with described DM-RS sequence, carry out channel estimating, with demodulation PBCH, wherein said PBCH at least comprises public search space configuration information, and described public search space configuration information determines for auxiliary described subscriber equipment the right interval of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used.
Preferably, for described independently new carrier type community, Physical Resource Block on, for SSS distributes all resource elements on OFDM symbol 1, for PSS distributes all resource elements on OFDM symbol 2, described step B further comprises: by judge described SSS and described PSS described Physical Resource Block on the position of the resource element that takies judge whether cell type is described independently new carrier type community.
Preferably, for described independently new carrier type cell allocation has specific Physical Cell Identifier (physical cell identity), described step B further comprises: whether the Physical Cell Identifier by identification community is that specific Physical Cell Identifier judges whether cell type is described independently new carrier type community.
Preferably, described method also comprises that the described public search space configuration information of step e: E. based in described PBCH determine public search space, and carrys out public search space described in demodulation based on described DM-RS sequence.
Preferably, in the situation that each independently the public search space of new carrier type community use respectively different Physical Resource Block right, described step e further comprises: E1. determines the right interval X of Physical Resource Block of public search space use of the independently new carrier type community at described subscriber equipment place according to the described public search space configuration information in described PBCH; E2. according to channel width, determine the quantity that downlink physical Resource Block is right
e3. the right quantity of Physical Resource Block of the public search space of the independently new carrier type community at described subscriber equipment place being used is defined as
and E4. determines according to following formula the right sequence number of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used, to determine public search space:
wherein,
the right sequence number of Physical Resource Block that independently newly the public search space of carrier type community is used that represents described subscriber equipment place, Cell
iDrepresent the independently specific Physical Cell Identifier of new carrier type community, M
shiftrepresent for Cell
iDthe predetermined sparse degree of displacement; And E5. carrys out the determined public search space of demodulation based on DM-RS sequence.
At this, by Physical Resource Block, the displacement of aspect is realized the coordination of presence of intercell interference, to guarantee the robustness of obtaining of public search space.
Preferably, in the situation that each independently the public search space of new carrier type community use identical Physical Resource Block right, described step e further comprises: X1. determines the right interval X of Physical Resource Block of public search space use of the independently new carrier type community at described subscriber equipment place according to the described public search space configuration information in described PBCH; X2. according to channel width, determine the quantity that downlink physical Resource Block is right
x3. the right quantity of Physical Resource Block of the public search space of the independently new carrier type community at described subscriber equipment place being used is defined as
x4. by following formula, according to distributing to a right ECCE quantity t of Physical Resource Block, determine the total number that is configured for the available ECCE of described subscriber equipment in k subframe
x5. determine the public search space of the independently new carrier type community at described subscriber equipment place; And X6. carrys out the determined public search space of demodulation based on DM-RS sequence.
At this, by the displacement of search volume aspect, realize the coordination of presence of intercell interference, to guarantee the robustness of obtaining of public search space.
Preferably, in described step X5, by following formula, determine the public search space of the independently new carrier type community at described subscriber equipment place:
Wherein, L represents polymerization rank; n
cIfor carrier wave indication, be used to indicate each carrier wave in the carrier wave that can simultaneously dispatch, M
(L)the total number that represents the ECCE candidate of other search volume of L polymer grade; Numbering m=0 ..., M
(L)-1, represent M
(L)numbering in individual ECCE candidate; Y
kthe hash function of expression based on frame k and subscriber equipment RNTI; Cell
iDrepresent the independently specific Physical Cell Identifier of new carrier type community; M
shiftrepresent for Cell
iDthe predetermined sparse degree of displacement; I=0,1,2...L-1, represents the numbering of each other ECCE of polymer grade.
Preferably, described public search space configuration information comprises public search space configuration index number, in described subscriber equipment, store predetermined relationship, the corresponding relation at the interval that Physical Resource Block that described predetermined relationship indicates the public search space of described public search space configuration index number and the independently new carrier type community at described subscriber equipment place to use is right, described step e 1 and/or described step X1 further comprise: according to described public search space configuration index number, determine with described predetermined relationship the right interval X of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used.
Preferably, in described step X4, distributing to a right ECCE quantity t of Physical Resource Block is 2 or 4.
Preferably, described method also comprised steps A: A. and base station synchronization before step B.
Preferably, described method also comprises the steps: that after step F F. and base station set up RRC and be connected; And G. determine described subscriber equipment EPDCCH the specific search volume of subscriber equipment and it is carried out to blind check.
According to a third aspect of the invention we, proposed a kind of in the base station of new carrier type community independently assisting users equipment PBCH and public search space are carried out to the method for the demodulation based on DM-RS, described method comprises: a. forms DM-RS sequence by take the Rank-1 precoding mode that precoding that code book index in code book number is 0 is benchmark; And b. passes through antenna port 7,8 to DM-RS sequence described in described user device transmissions, so that described subscriber equipment carries out the demodulation based on DM-RS to described PBCH and described public search space.
By the present invention, proposed for the method for the physical source distributing of the PBCH of new carrier type independently, and further proposed the method that PBCH and public search space are carried out to the demodulation based on DM-RS under new carrier type independently.Therefore realized as new carrier type independently provides the scheme based on DM-RS demodulation, and provide support for subscriber equipment obtaining of public search space when the initial access.
Various aspects of the present invention are by the explanation of the specific embodiment by hereinafter and more clear.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 show according to an embodiment of the invention in the communication environment based on new carrier type independently for the physical resource of PBCH Physical Resource Block on the method for salary distribution;
Fig. 2 show according to another embodiment of the invention in the communication environment based on new carrier type independently for the resource element of PBCH Physical Resource Block on the method for salary distribution;
Fig. 3 show according to still another embodiment of the invention at base station side assisting users equipment, PBCH and public search space are carried out to the flow chart of the method for the demodulation based on DM-RS; And
Fig. 4 show according to still another embodiment of the invention in user equipment side, PBCH and public search space are carried out the flow chart of the method for the demodulation based on DM-RS.
In the drawings, run through different diagrams, same or similar Reference numeral represents identical or corresponding parts or feature.
Embodiment
Fig. 1 show according to an embodiment of the invention in the communication environment based on new carrier type independently for the physical resource of PBCH Physical Resource Block on the method for salary distribution.Fig. 2 show according to another embodiment of the invention in the communication environment based on new carrier type independently for the resource element of PBCH Physical Resource Block on the method for salary distribution.
At this, PBCH transmission will be used 6 Physical Resource Block pair of central authorities.The configuration mode of the resource element of two kinds of new PBCH that use different OFDM symbol in subframe has been proposed in Fig. 1 and Fig. 2.And the cycle of PBCH is still identical with the cycle of traditional PBCH, and be mapped in first subframe of each radio frames, every 40ms carries out repetition.In addition, identical with traditional PBCH, on frequency domain, 72 subcarriers (6 Physical Resource Block to) of central authorities transmit for PBCH too.
Consider the demodulation no longer existing based on CRS, by changing the position of the resource element of the PBCH on the OFDM symbol of relevant Physical Resource Block centering, to coordinate the demodulation mode based on DM-RS.
For the method for salary distribution of the physical resource of PBCH, will follow following rule:
1. still with 6 Physical Resource Block of central authorities, to coming, for PBCH, transmit;
2. resource element PBCH being used is distributed on the residing OFDM symbol of DM-RS, or the resource element that PBCH is used is distributed on the residing OFDM symbol of DM-RS and on the OFDM symbol adjacent with the residing OFDM symbol of DM-RS, thereby make the demodulation to PBCH based on DM-RS more reliable.Be PBCH and distribute new OFDM symbol;
3. remove the PHICH configuration information (3bit) (below will describe in detail) in PBCH;
4. in PBCH, add public search space configuration information (below will describe in detail).
Particularly, with reference to Fig. 1, it is for the situation of DM-RS punching.As shown in Figure 1, SSS and PSS still occupy Physical Resource Block to the resource on the 5th and the 6th upper symbol (being respectively right resource element and the left resource element of drawing oblique line of light color of drawing oblique line of light color).And OFDM symbol 12 and subcarrier 1,6,11 corresponding resource elements and OFDM symbol 13 and subcarrier 1,6,11 corresponding resource elements are distributed to DM-RS (i.e. the dark right resource element of drawing oblique line), and remaining resource element on all resource elements on OFDM symbol 11 and OFDM symbol 12,13 is distributed to described PBCH (drawing retiform resource element).
At this, PBCH corresponding Physical Resource Block on actual used resource element be 30, than traditional PBCH, reduced by 10 resource elements.For traditional PBCH, it will for example carry following information: the highest 8bit of dl system bandwidth, PHICH structure and System Frame Number.Due to, for new carrier type independently, the function of PHICH structure no longer needs, because independently there is not the CRS demodulation based on PHICH in new carrier type.On the other hand, consider that to subscriber equipment, to the independently support of the initial access of new carrier type, public search space configuration information will be included in (below describing in detail public search space configuration information) in PBCH.Therefore, in sum, according in PBCH of the present invention, will not comprise original PHICH configuration information (3bit), and will add public search space configuration information.
Therefore, as mentioned above, although will add new public search space configuration information in PBCH, but removed original PHICH configuration information (3bit), and because additional redundancy in traditional PBCH has the free time of 10 bits, so 30 resource elements for PBCH shown in Fig. 1 are enough for new public search space configuration information.
Referring now to Fig. 2, its for PSS/SSS redistribute the situation of resource.As shown in Figure 2, Physical Resource Block on, for SSS distributes all resource elements (the right resource element of drawing oblique line of light color) on OFDM symbol 1, for PSS distributes all resource elements (i.e. the left resource element of drawing oblique line of light color) on OFDM symbol 2, by OFDM symbol 5 and subcarrier 1, 6, 11 corresponding resource elements, OFDM symbol 6 and subcarrier 1, 6, 11 corresponding resource elements, OFDM symbol 12 and subcarrier 1, 6, 11 corresponding resource elements and OFDM symbol 13 and subcarrier 1, 6, 11 corresponding resource elements are distributed to DM-RS (i.e. the dark right resource element of drawing oblique line), and by OFDM symbol 5, 6, 12, on 13, remaining resource element is distributed to PBCH (drawing retiform resource element).At this, compared to the embodiment of Fig. 1, PBCH corresponding Physical Resource Block on actual used resource element be 36.
On the other hand, than prior art, in order to be supported in initial access period (not receiving in the situation of RRC signaling), PBCH and public search space are carried out to the demodulation based on DM-RS, need to carry out some new definition to the operating process between base station and subscriber equipment.
Fig. 3 show according to still another embodiment of the invention at base station side assisting users equipment, PBCH and public search space are carried out to the flow chart of the method for the demodulation based on DM-RS.
As shown in Figure 3, in a first step, base station forms DM-RS sequence by take the Rank-1 precoding mode that precoding that code book index in code book number is 0 is benchmark.That is, in this form with so-called " unit matrix ", DM-RS is carried out to precoding, to form DM-RS sequence.
In second step, antenna for base station port 7,8 is to user device transmissions DM-RS sequence, so that subscriber equipment carries out the demodulation based on DM-RS to PBCH and public search space.At this, by antenna port 7,8, transmitting DM-RS sequence can be mapped in the occupied resource element of DM-RS on the position shown in Fig. 1 or Fig. 2, thus can be so that the demodulation based on DM-RS is more accurate.
Fig. 4 show according to still another embodiment of the invention in user equipment side, PBCH and public search space are carried out the flow chart of the method for the demodulation based on DM-RS.
In step S1, subscriber equipment is synchronizeed with base station.Then, in step S2, subscriber equipment judges that whether cell type is new carrier type community independently.If not new carrier type community independently but traditional carrier type community by traditional process, operate, be not described in detail in this.And when cell type be independently during new carrier type community, method enters step S3.
Preferably, in step S2, can for example by following two kinds of modes, judge.
In the first execution mode, for new carrier type community independently Physical Resource Block on for SSS distributes all resource elements on OFDM symbol 1, be all resource elements (being the situation shown in Fig. 2) on PSS distribution OFDM symbol 2.In this case, in step S2 by judge SSS and PSS Physical Resource Block on the position of the resource element that takies judge that whether cell type is new carrier type community independently.Particularly, if SSS is used all resource elements rather than all resource elements on OFDM symbol 5 (being the method for salary distribution of the resource element of the SSS in conventional cases) on OFDM symbol 1, PSS is used all resource elements rather than all resource elements on OFDM symbol 6 (being the method for salary distribution of the resource element of the SSS in conventional cases) on OFDM symbol 2, can be judged as independently new carrier type community in Jiang Gai community.
In the second execution mode, for new carrier type cell allocation independently has specific Physical Cell Identifier, in this case independently new carrier type community reserves some specific Physical Cell Identifier.In this case, in step S2, whether subscriber equipment can be that specific Physical Cell Identifier judges that whether cell type is new carrier type community independently by the Physical Cell Identifier of identification community.
Cell type be independently new carrier type community and thereby method enter step S3 in the situation that, in step S3, subscriber equipment receives DM-RS sequence from base station.As previously mentioned, this DM-RS sequence is to be formed by take the Rank-1 precoding mode precoding that precoding that code book index in code book number is 0 is benchmark by base station.And this DM-RS sequence is transmitted by antenna port 7 and 8 by base station, so the shared resource element position of DM-RS will be as shown in Figure 1 or 2.
In addition,, in step S3, the Rank-1 precoding mode of subscriber equipment based on predetermined, carries out channel estimating with DM-RS sequence, with demodulation PBCH.At this, subscriber equipment will take to give tacit consent to the operation of formula, and acquiescence is implemented predetermined Rank-1 precoding mode, thereby has obtained the value of rank, and carries out channel estimating based on this.In the prior art, the value of rank is informed subscriber equipment by base station by DCI in the USS stage.In contrast, due in the present invention, in this USS process that also do not go into effect, the precoding mode of rank-1 implemented acquiescence by subscriber equipment, and therefore determines the value (being that is, 1 in this order) of rank.In addition, in PBCH, at least comprise public search space configuration information (below will describe in detail).
Then, method enters step S4, and the public search space configuration information of subscriber equipment based in PBCH determined public search space, and carrys out demodulation public search space based on DM-RS sequence.
Particularly, in the present invention, the design principle of following public search space will be followed: 1. the function that still keeps original public search space in new public search space design; 2. public search space configuration information will be included in PBCH and (above be mentioned); 3. in maintenance EPDCCH, the ECCE in the design of USS defines and the right structure of Physical Resource Block: each Physical Resource Block of a. is to having 2 or 4 ECCE; B. use higher polymerization rank, for example 4 and 8.4. consider the coordination of presence of intercell interference, especially for intensive community, distribute, the robustness that need to keep public search space to obtain.Therefore, for public search space has defined two kinds of resource distribution modes, the displacement of Physical Resource Block to the displacement of aspect or search volume aspect.
At this, first Physical Resource Block is described in detail the mode of the displacement of aspect.Under this enforcement situation, each mutually orthogonal Physical Resource Block pair that independently public search space of new carrier type community is used, and be shifted based on Physical Cell Identifier.Particularly, OAM will be the adjacent independently new different Physical Cell Identifier of carrier type cell allocation.For each community, the public search space of community will be used several vacant Physical Resource Block pair, and the Physical Resource Block not using with the public search space of other communities conflicts to mutual.
First, subscriber equipment determines according to the public search space configuration information in PBCH the right interval X of Physical Resource Block that the public search space of the independently new carrier type community at subscriber equipment place is used.
Table 1 shows predetermined relationship, the corresponding relation at the interval that its indication public search space configuration index number and the Physical Resource Block of the public search space use of the independently new carrier type community at subscriber equipment place are right.This table for example can be pre-stored in subscriber equipment and both sides, base station.In one embodiment of the invention, public search space configuration information in PBCH comprises public search space configuration index number, and subscriber equipment will determine by predetermined relationship (i.e. table 1) the right interval X of Physical Resource Block that the public search space of the independently new carrier type community at place is used according to this call number.
| Public search space configuration index number | Interval |
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 8 |
| 5 | 10 |
| 6 | 12 |
| 7 | 15 |
| 8 | 20 |
| 9 | 25 |
Table 1
If for example the public search space configuration index in public search space configuration information number is 2, subscriber equipment can be according to above-mentioned pre-stored predetermined relationship, determine Physical Resource Block that the public search space of the independently new carrier type community at subscriber equipment place uses right be spaced apart 4.This just means that every four Physical Resource Block centerings just have a public search space that is used to this new carrier type community.
At this, it is pointed out that according to public search space configuration information of the present invention and be intended to determine for assisting user equipment the right interval of Physical Resource Block that the public search space of the independently new carrier type community at subscriber equipment place is used.By this method, each independently the public search space of new carrier type community will use mutually orthogonal Physical Resource Block pair.And above-mentioned public search space configuration index number is only an illustrative embodiments.
After this, subscriber equipment determines according to channel width the quantity that downlink physical Resource Block is right
this for example can implement by table 2 (with reference to 3GPP TS36.101):
Table 2
For example, when channel width is 10MHz, the quantity that downlink physical Resource Block is right
be 50.
Then the right quantity of Physical Resource Block that, subscriber equipment uses the public search space of the independently new carrier type community at subscriber equipment place is defined as
in this embodiment, will show that the right quantity of Physical Resource Block is 12.
Then, subscriber equipment will use Cell
iDthe Physical Resource Block pair that the public search space of (independently the specific Physical Cell Identifier of new carrier type community) the new carrier type community that is shifted is used.Particularly, for example, can determine the right sequence number of Physical Resource Block that the public search space of the independently new carrier type community at subscriber equipment place is used by through type 1, to determine public search space:
(formula 1)
Wherein,
the right sequence number of Physical Resource Block that independently newly the public search space of carrier type community is used that represents described subscriber equipment place, Cell
iDrepresent the independently specific Physical Cell Identifier of new carrier type community, M
shiftrepresent for Cell
iDthe predetermined sparse degree of displacement.
Thus, subscriber equipment has been determined the right sequence number of Physical Resource Block that independently newly the public search space of carrier type community is used at its place, orient the right position of Physical Resource Block that is mapped with public search space, thereby determined public search space.Then, subscriber equipment will carry out the determined public search space of demodulation based on DM-RS sequence.
In addition, it may be noted that formula 1 is intended to interval to combine with the displacement of the specific Physical Cell Identifier of new carrier type community.In this way, the public search space of different new carrier type communities, by mutually orthogonal, arranges the setting of 4 ECCE candidates thereby be no longer necessary for polymerization rank 4, for polymerization rank 8 arranges 2 ECCE candidates.Because the setting of 2 ECCE candidates is set for polymerization rank 4, for arranging 1 ECCE candidate, polymerization rank 8 has just been enough to realize distinguish.
In addition, for different bandwidth and the following bandwidth that may implement, the right interval X of Physical Resource Block that the public search space of the independently new carrier type community in table 1 is used also may get different values.Therefore the numerical value of, listing in table 1 has been only example effect.For different bandwidth, the call number in table 1 also can represent different interval X.For example, for 1.4MHz, the corresponding spacing value of call number 0 is 1, and the corresponding spacing value of call number 1 is 2, yet for 5MHz, the corresponding spacing value of call number 0 is 8, the corresponding spacing value 10 of call number 1.
Next, the mode of the displacement of the search volume aspect of the public search space of the community for different is described in detail.Under this form of implementation, each independently the public search space of new carrier type community use identical Physical Resource Block pair.
First, similar with the first execution mode, subscriber equipment determines according to the public search space configuration information in PBCH the right interval X of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used.This for example also can implement by the call number in table 1.That in embodiment and the first execution mode, describes is similar, is not described in detail in this.
After this, still similar with the first execution mode, subscriber equipment determines according to channel width the quantity that downlink physical Resource Block is right
this also for example can implement by table 2.
Then the right quantity of Physical Resource Block that, subscriber equipment uses the public search space of the independently new carrier type community at subscriber equipment place is defined as
thereby subscriber equipment has been determined each independently each Physical Resource Block pair for public search space of the common use of new carrier type community.
Then, subscriber equipment through type 2, determines according to distributing to a right ECCE quantity t of Physical Resource Block the total number that is configured for the available ECCE of all subscriber equipmenies in k subframe
(formula 2)
Preferably, distributing to a right ECCE quantity t of Physical Resource Block is 2 or 4.
Then, considering presence of intercell interference, can be the randomized technique in ECCE application searches aspect.This for example can realize by through type 3:
(formula 3)
Wherein, L represents polymerization rank; n
cIfor carrier wave indication, be used to indicate each carrier wave in the carrier wave that can simultaneously dispatch, M
(L)the total number that represents the ECCE candidate of other search volume of L polymer grade; Numbering m=0 ..., M
(L)-1, represent M
(L)numbering in individual ECCE candidate; Y
kthe hash function of expression based on frame k and subscriber equipment RNTI; Cell
iDrepresent the independently specific Physical Cell Identifier of new carrier type community; M
shiftrepresent for CEll
iDthe predetermined sparse degree of displacement; I=0,1,2...L-1, represents the numbering of each other ECCE of polymer grade.
Through type 3, can be shifted by Physical Cell Identifier corresponding to the ECCE of the public search space of new carrier type community, thereby has distinguished the ECCE that the public search space of each different districts is used.Therefore, subscriber equipment has been determined the public search space of the independently new carrier type community at its place, i.e. the spendable ECCE of public search space of new carrier type community independently.Then, subscriber equipment will carry out the determined public search space of demodulation based on DM-RS sequence.
In sum, in step S4, for presence of intercell interference, the present invention is that public search space has provided two kinds of resource distribution modes.After the public search space of community of determining place, subscriber equipment will carry out demodulation public search space based on DM-RS.
Then method proceeds to step S5, and subscriber equipment is set up RRC with base station and is connected.Then, method enters step S6, and subscriber equipment is determined the specific search volume of the subscriber equipment of EPDCCH and it is carried out to blind check.
In addition, even if it may be noted that after RRC connects foundation, the Physical Resource Block pair for those mappings by PBCH and/or public search space, subscriber equipment will adopt aforesaid way to process it.And for other transfer of data, subscriber equipment can choice for use other DM-RS configuration and codebook configuration (for example code book index number non-zero coding).
It should be noted that, above-described embodiment is only exemplary, but not limitation of the present invention.Within any technical scheme that does not deviate from spirit of the present invention all should fall into protection scope of the present invention, this comprises the different technologies feature that use occurs in different embodiment, and method can combine, to obtain beneficial effect.
Claims (15)
1. one kind is the method for the PBCH configures physical resource based on DM-RS demodulation in the communication environment based on new carrier type independently, wherein, described PBCH at least comprises public search space configuration information, described public search space configuration information determines for assisting user equipment the right interval of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used, and described method comprises:
Physical Resource Block on, the resource element that described PBCH is used is distributed on the residing OFDM symbol of DM-RS, or the resource element that described PBCH is used is distributed on the residing OFDM symbol of DM-RS and on the OFDM symbol adjacent with the residing OFDM symbol of described DM-RS.
2. method according to claim 1, it is characterized in that, described Physical Resource Block on, OFDM symbol 12 and subcarrier 1,6,11 corresponding resource elements and OFDM symbol 13 and subcarrier 1,6,11 corresponding resource elements are distributed to DM-RS, and remaining resource element on all resource elements on OFDM symbol 11 and described OFDM symbol 12,13 is distributed to described PBCH.
3. method according to claim 1, it is characterized in that, described Physical Resource Block on, for SSS distributes all resource elements on OFDM symbol 1, for PSS distributes all resource elements on OFDM symbol 2, by OFDM symbol 5 and subcarrier 1, 6, 11 corresponding resource elements, OFDM symbol 6 and subcarrier 1, 6, 11 corresponding resource elements, OFDM symbol 12 and subcarrier 1, 6, 11 corresponding resource elements and OFDM symbol 13 and subcarrier 1, 6, 11 corresponding resource elements are distributed to DM-RS, and by described OFDM symbol 5, 6, 12, on 13, remaining resource element is distributed to described PBCH.
4. a method of in subscriber equipment, PBCH and public search space being carried out to the demodulation based on DM-RS, described method comprises:
B. judge that whether cell type is new carrier type community independently;
C. when described cell type is described independently new carrier type community, from base station, receive DM-RS sequence, wherein said DM-RS sequence is formed by take the Rank-1 precoding mode precoding that precoding that code book index in code book number is 0 is benchmark by described base station, and by described base station by antenna port 7 and 8 transmission; And
D. the Rank-1 precoding mode based on predetermined, with described DM-RS sequence, carry out channel estimating, with demodulation PBCH, wherein said PBCH at least comprises public search space configuration information, and described public search space configuration information determines for auxiliary described subscriber equipment the right interval of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used.
5. method according to claim 4, is characterized in that, for described independently new carrier type community, Physical Resource Block on, for SSS distributes all resource elements on OFDM symbol 1, for PSS distributes all resource elements on OFDM symbol 2, described step B further comprises:
By judge described SSS and described PSS described Physical Resource Block on the position of the resource element that takies judge whether cell type is described independently new carrier type community.
6. method according to claim 4, is characterized in that, for described independently new carrier type cell allocation has specific Physical Cell Identifier, described step B further comprises:
Whether the Physical Cell Identifier by identification community is that specific Physical Cell Identifier judges whether cell type is described independently new carrier type community.
7. method according to claim 4, is characterized in that, described method also comprises step e:
E. the described public search space configuration information based in described PBCH is determined public search space, and carrys out public search space described in demodulation based on described DM-RS sequence.
8. method according to claim 7, is characterized in that, in the situation that each independently the public search space of new carrier type community use respectively different Physical Resource Block right, described step e further comprises:
E1. according to the described public search space configuration information in described PBCH, determine the right interval X of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used;
E2. according to channel width, determine the quantity that downlink physical Resource Block is right
E3. the right quantity of Physical Resource Block of the public search space of the independently new carrier type community at described subscriber equipment place being used is defined as
and
E4. according to following formula, determine the right sequence number of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used, to determine public search space:
Wherein,
the right sequence number of Physical Resource Block that independently newly the public search space of carrier type community is used that represents described subscriber equipment place, Cell
iDrepresent the independently specific Physical Cell Identifier of new carrier type community, M
shiftrepresent for Cell
iDthe predetermined sparse degree of displacement; And
E5. based on described DM-RS sequence, carry out the determined public search space of demodulation.
9. method according to claim 7, is characterized in that, in the situation that each independently the public search space of new carrier type community use identical Physical Resource Block right, described step e further comprises:
X1. according to the described public search space configuration information in described PBCH, determine the right interval X of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used;
X2. according to channel width, determine the quantity that downlink physical Resource Block is right
X3. the right quantity of Physical Resource Block of the public search space of the independently new carrier type community at described subscriber equipment place being used is defined as
X4. by following formula, according to distributing to a right ECCE quantity t of Physical Resource Block, determine the total number that is configured for the available ECCE of all subscriber equipmenies in k subframe
X5. determine the public search space of the independently new carrier type community at described subscriber equipment place; And
X6. based on described DM-RS sequence, carry out the determined public search space of demodulation.
10. method according to claim 9, is characterized in that, in described step X5, determines the public search space of the independently new carrier type community at described subscriber equipment place by following formula:
Wherein, L represents polymerization rank; n
cIfor carrier wave indication, be used to indicate each carrier wave in the carrier wave that can simultaneously dispatch, M
(L)the total number that represents the ECCE candidate of other search volume of L polymer grade; Numbering m=0 ..., M
(L)-1, represent M
(L)numbering in individual ECCE candidate; Y
kthe hash function of expression based on frame k and subscriber equipment RNTI; Cell
iDrepresent the independently specific Physical Cell Identifier of new carrier type community; M
shiftrepresent for Cell
iDthe predetermined sparse degree of displacement; I=0,1,2...L-1, represents the numbering of each other ECCE of polymer grade.
11. methods according to claim 8 or claim 9, it is characterized in that, described public search space configuration information comprises public search space configuration index number, in described subscriber equipment, store predetermined relationship, the corresponding relation at the interval that Physical Resource Block that described predetermined relationship indicates the public search space of described public search space configuration index number and the independently new carrier type community at described subscriber equipment place to use is right, described step e 1 and/or described step X1 further comprise:
According to described public search space configuration index number, determine with described predetermined relationship the right interval X of Physical Resource Block that the public search space of the independently new carrier type community at described subscriber equipment place is used.
12. methods according to claim 9, is characterized in that, in described step X4, distributing to a right ECCE quantity t of Physical Resource Block is 2 or 4.
13. methods according to claim 4, is characterized in that, described method also comprised steps A before step B:
A. with base station synchronization.
14. methods according to claim 7, is characterized in that, described method also comprises the steps: after step F
F. setting up RRC with base station is connected; And
G. determine described subscriber equipment EPDCCH the specific search volume of subscriber equipment and it is carried out to blind check.
15. 1 kinds in the base station of new carrier type community independently assisting users equipment PBCH and public search space are carried out to the method for the demodulation based on DM-RS, described method comprises:
A. by take the Rank-1 precoding mode that precoding that code book index in code book number is 0 is benchmark, form DM-RS sequence; And
B. pass through antenna port 7,8 to DM-RS sequence described in described user device transmissions, so that described subscriber equipment carries out the demodulation based on DM-RS to described PBCH and described public search space.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712892A (en) * | 2015-07-21 | 2017-05-24 | 普天信息技术有限公司 | Code multiple-access method and device |
| CN106788931A (en) * | 2016-09-30 | 2017-05-31 | 展讯通信（上海）有限公司 | The method of information transfer and base station, user equipment in communication system |
| CN108076517A (en) * | 2016-11-16 | 2018-05-25 | ***通信有限公司研究院 | Sending method, method of reseptance, the network equipment and the user equipment of resource instruction |
| WO2018196848A1 (en) * | 2017-04-28 | 2018-11-01 | 维沃移动通信有限公司 | Method for transmitting synchronizing signal block, network device and user equipment |
| CN109478943A (en) * | 2017-02-06 | 2019-03-15 | Lg 电子株式会社 | The method and apparatus sent and received signal between the user equipment and the base station in wireless communication system |
| US10673552B2 (en) | 2017-04-14 | 2020-06-02 | Qualcomm Incorporated | Synchronization signal block designs for wireless communication |
| US11943724B2 (en) | 2017-02-03 | 2024-03-26 | Interdigital Patent Holdings, Inc. | Broadcast channel transmission and demodulation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120155561A1 (en) * | 2009-08-19 | 2012-06-21 | Seo Han Byul | Method of relay node using reference signal and relay node using the method |
| CN102549944A (en) * | 2009-09-28 | 2012-07-04 | 三星电子株式会社 | Extending physical downlink control channels |
| CN102594513A (en) * | 2012-03-20 | 2012-07-18 | 电信科学技术研究院 | Enhanced downlink control signal channel transmission method and device |
| CN102892083A (en) * | 2011-07-18 | 2013-01-23 | 普天信息技术研究院有限公司 | Data transmission method in trunking group call |
| CN103002468A (en) * | 2011-09-13 | 2013-03-27 | 夏普株式会社 | Access method and access equipment for wireless communication system |
-
2013
- 2013-04-02 CN CN201310113920.XA patent/CN104104636B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120155561A1 (en) * | 2009-08-19 | 2012-06-21 | Seo Han Byul | Method of relay node using reference signal and relay node using the method |
| CN102549944A (en) * | 2009-09-28 | 2012-07-04 | 三星电子株式会社 | Extending physical downlink control channels |
| CN102892083A (en) * | 2011-07-18 | 2013-01-23 | 普天信息技术研究院有限公司 | Data transmission method in trunking group call |
| CN103002468A (en) * | 2011-09-13 | 2013-03-27 | 夏普株式会社 | Access method and access equipment for wireless communication system |
| CN102594513A (en) * | 2012-03-20 | 2012-07-18 | 电信科学技术研究院 | Enhanced downlink control signal channel transmission method and device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712892A (en) * | 2015-07-21 | 2017-05-24 | 普天信息技术有限公司 | Code multiple-access method and device |
| CN106788931A (en) * | 2016-09-30 | 2017-05-31 | 展讯通信（上海）有限公司 | The method of information transfer and base station, user equipment in communication system |
| CN106788931B (en) * | 2016-09-30 | 2019-01-04 | 展讯通信（上海）有限公司 | The method and base station, user equipment that information is transmitted in communication system |
| US11677607B2 (en) | 2016-09-30 | 2023-06-13 | Spreadtrum Communications (Shanghai) Co., Ltd. | Method for transmitting information in communication system, base station and user equipment |
| US10554468B2 (en) | 2016-09-30 | 2020-02-04 | Spreadtrum Communications (Shanghai) Co., Ltd. | Method for transmitting information in communication system, base station and user equipment |
| US11277296B2 (en) | 2016-09-30 | 2022-03-15 | Spreadtrum Communications (Shanghai) Co., Ltd. | Method for transmitting information in communication system, base station and user equipment |
| CN108076517A (en) * | 2016-11-16 | 2018-05-25 | ***通信有限公司研究院 | Sending method, method of reseptance, the network equipment and the user equipment of resource instruction |
| US11943724B2 (en) | 2017-02-03 | 2024-03-26 | Interdigital Patent Holdings, Inc. | Broadcast channel transmission and demodulation |
| CN109478943B (en) * | 2017-02-06 | 2020-08-18 | Lg 电子株式会社 | Method and apparatus for transmitting and receiving signal between user equipment and base station in wireless communication system |
| US10757666B2 (en) | 2017-02-06 | 2020-08-25 | Lg Electronics Inc. | Method and device for transmitting and receiving signal between user equipment and base station in wireless communication system |
| US11483783B2 (en) | 2017-02-06 | 2022-10-25 | Lg Electronics Inc. | Method and device for transmitting and receiving signal between user equipment and base station in wireless communication system |
| CN109478943A (en) * | 2017-02-06 | 2019-03-15 | Lg 电子株式会社 | The method and apparatus sent and received signal between the user equipment and the base station in wireless communication system |
| US11902921B2 (en) | 2017-02-06 | 2024-02-13 | Lg Electronics Inc. | Method and device for transmitting and receiving signal between user equipment and base station in wireless communication system |
| US10673552B2 (en) | 2017-04-14 | 2020-06-02 | Qualcomm Incorporated | Synchronization signal block designs for wireless communication |
| US11343782B2 (en) | 2017-04-28 | 2022-05-24 | Vivo Mobile Communication Co., Ltd. | Method of transmitting synchronized signal block, network equipment, and user equipment |
| WO2018196848A1 (en) * | 2017-04-28 | 2018-11-01 | 维沃移动通信有限公司 | Method for transmitting synchronizing signal block, network device and user equipment |
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