CN102076055B - Cross-carrier downlink control channel indicating method, system and evolution base station - Google Patents
Cross-carrier downlink control channel indicating method, system and evolution base station Download PDFInfo
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Abstract
The invention discloses a cross-carrier downlink control channel indicating method, a cross-carrier downlink control channel indicating system and a cross-carrier downlink control channel indicating evolution base station, which are applied to a 3GPP LTE-A system. To each user equipment (UE) adopting an aggregated carrier, an eNB distributes numbers for each carrier according to the preset carrier number distributive rule of the UE and a frequency point or a programmable communications interface (PCI) of each carrier centralized by the aggregated carrier of the UE; to each user equipment (UE) adopting the aggregated carrier, the eNB transmits the frequency point or the PCI of each carrier centralized by the aggregated carrier of the UE to the UE; the eNB transmits a downlink control signaling for a second carrier to a first UE on a first carrier, wherein the signaling contains the number of a second carrier; and the first UE receives the downlink control signaling, reads the number of the second carrier from the signaling, determines the frequency point or the PCI of the second carrier according to the number of the second carrier and carries out the content of the downlink control signaling on the second carrier corresponding to the frequency point or the PCI. By the method and through the system and the evolution base station, downlink control information of a plurality of carriers is transmitted on one carrier.
Description
Technical Field
The invention relates to the technical field of carrier aggregation, in particular to a cross-carrier downlink control channel indication method, a cross-carrier downlink control channel indication system and an evolution base station.
Background
3 rd generation mobile communication partnership project (3GPP, 3)rdA subsequent enhanced version of Generation Partnership Project) Long Term Evolution (LTE) technology is referred to as LTE-Advanced (LTE-a for short), in which many new technologies are introduced, and carrier aggregation technology is also introduced as a key technology to support higher bandwidth transmission. The basic principle of carrier aggregation is to work by aggregating two or more basic carriers together, thereby meeting the higher bandwidth requirements. After the carrier aggregation technology is introduced, the number of working carriers in one cell is changed from one to a plurality, and a multi-carrier communication scene is formed.
The downlink control channel is used to transmit downlink control signaling, for example: scheduling information for downlink data transmission, scheduling assignment for uplink data transmission, and the like. Each carrier capable of working normally has its own downlink control channel. The recent 3GPP standard conference proposes a scheme of transmitting downlink control information of multiple carriers on one carrier, i.e. a cross-carrier downlink control channel indication scheme. But does not give how this scheme can be implemented in detail.
Disclosure of Invention
The invention provides a cross-carrier downlink control channel indication method, a cross-carrier downlink control channel indication system and an evolution base station, which are used for realizing transmission of downlink control information of a plurality of carriers on one carrier.
The technical scheme of the invention is realized as follows:
a cross-carrier downlink control channel indication method is applied to a 3GPP LTE-A system, for each user equipment UE adopting an aggregation carrier, an evolution base station eNB distributes a number for each carrier according to a preset carrier number distribution rule of the UE and a frequency point or a physical channel identifier PCI of each carrier in an aggregation carrier set of the UE, and the method comprises the following steps:
for each UE adopting the aggregated carrier, the eNB sends the frequency point or PCI of each carrier in the aggregated carrier set of the UE to the UE;
the eNB sends a downlink control signaling aiming at a second carrier to the first UE on the first carrier, wherein the signaling comprises the number of the second carrier;
and the first UE receives the downlink control signaling, reads the number of the second carrier from the signaling, determines the frequency point or PCI of the second carrier according to the number of the second carrier, and executes the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI.
Before the eNB sends the frequency point or PCI of each carrier in the aggregated carrier set of the UE to the UE, the method further includes:
sending the carrier number distribution rule of the UE to the UE;
the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes:
and the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the carrier number distribution rule of the first UE.
The eNB sending the frequency point or PCI of each carrier in the aggregation carrier set of the UE to the UE comprises the following steps:
the eNB sends one of the frequency point and the PCI of each carrier in the aggregation carrier set of the UE and the carrier number distribution rule of the UE to the UE;
the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes:
and the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the carrier number distribution rule of the first UE.
The eNB sending the frequency point or PCI of each carrier in the aggregation carrier set of the UE to the UE comprises the following steps:
the eNB sends the corresponding relation of the frequency point, one of the PCIs and the number of each carrier in the aggregation carrier set of the UE to the UE;
the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes:
and the first UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
The carrier number allocation rule is as follows:
allocating serial numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the aggregation carrier set of the UE from small to large;
or:
allocating serial numbers to the carriers in sequence according to the descending of the frequency point or PCI of each carrier in the aggregation carrier set of the UE;
or:
and numbering each carrier in sequence according to the sequence of transmitting the frequency point or PCI of each carrier in the aggregation carrier set of the UE to the UE.
The eNB sending the frequency point or PCI of each carrier in the aggregated carrier set of the UE to the UE is:
and the eNB sends the frequency point or PCI of each carrier in the aggregation carrier set of the UE to the UE through a dedicated control signaling or a common signaling carried on the RRC signaling.
The numbers are binary numbers.
A cross-carrier downlink control channel indication method is applied to a 3GPP LTE-A system, and an evolution base station eNB distributes numbers for carriers according to frequency points or physical channel identifiers PCI of the carriers in the system according to preset number distribution rules, and the method comprises the following steps:
the eNB broadcasts the frequency points or the PCIs of all carriers in the system to each user equipment UE;
the eNB sends a downlink control signaling aiming at a second carrier to the first UE on the first carrier, wherein the signaling comprises the number of the second carrier;
and the first UE receives the downlink control signaling, reads the number of the second carrier from the signaling, determines the frequency point or PCI of the second carrier according to the number of the second carrier, and executes the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI.
Before the eNB broadcasts the frequency points or PCIs of all carriers in the system to each UE, the method further includes:
broadcasting the number distribution rule to each UE;
the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes:
and the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the number distribution rule.
The eNB broadcasting the frequency points or the PCIs of all carriers in the system to each user equipment UE comprises the following steps:
the eNB broadcasts one of the frequency points and the PCIs of all carriers in the system to each UE together with the number distribution rule;
the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes:
and the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the number distribution rule.
The eNB broadcasting the frequency points or the PCIs of all carriers in the system to each UE comprises the following steps:
the eNB broadcasts the corresponding relation of the frequency point, one of the PCIs and the number of all the carriers in the system to each UE;
the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes:
and the first UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
The number distribution rule is as follows:
allocating serial numbers for the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from small to large;
or:
allocating serial numbers for the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from large to small;
or:
and numbering each carrier in sequence according to the sequence of broadcasting the frequency point or PCI of each carrier in the system to the UE.
The eNB broadcasting the frequency points or PCIs of all carriers in the system to each UE is:
and the eNB broadcasts the frequency points or the PCIs of all carriers in the system to each UE through a system message carried on the radio resource control RRC signaling.
The numbers are binary numbers.
A cross-carrier downlink control channel indication system, the system is located in a 3GPP LTE-A system, the cross-carrier downlink control channel indication system includes: eNB and UE, wherein:
the eNB allocates numbers to each UE adopting the aggregated carriers according to a preset carrier number allocation rule of the UE and the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE; sending the frequency point or PCI of each carrier in the aggregation carrier set of each UE to the UE; sending a downlink control signaling aiming at a second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier;
and the UE receives the downlink control signaling from the first carrier, reads the number of the second carrier from the signaling, determines the frequency point or PCI of the second carrier according to the number of the second carrier, and executes the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI.
The eNB further comprises:
a module for sending the corresponding relationship between the frequency point, one of the PCIs and the number of each carrier in the aggregated carrier set of each UE to the UE;
and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
A cross-carrier downlink control channel indication system, the system is located in a 3GPP LTE-A system, the cross-carrier downlink control channel indication system includes: eNB and UE, wherein:
the eNB allocates numbers for the carriers according to the frequency points or the PCIs of the carriers of the LTE-A system according to a preset number allocation rule; broadcasting the frequency points or the PCIs of all carriers in the LTE-A system to each UE; sending a downlink control signaling aiming at a second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier;
and the UE receives the downlink control signaling from the first carrier, reads the number of the second carrier from the signaling, determines the frequency point or PCI of the second carrier according to the number of the second carrier, and executes the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI.
The eNB further comprises:
means for broadcasting a number assignment rule to each UE;
and the UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the number distribution rule.
The eNB further comprises:
a module for broadcasting the corresponding relationship of the frequency point, one of the PCIs and the number of all carriers in the LTE-A system to each UE;
and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
An eNB, located in a 3GPP LTE-a system, comprising:
the first module is used for allocating numbers to each UE adopting the aggregated carriers according to the preset carrier number allocation rule of the UE and the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE;
the second module is used for sending the frequency point or PCI of each carrier in the aggregated carrier set of each UE to the UE;
and a third module, configured to send a downlink control signaling for the second carrier to the UE on the first carrier, where the signaling includes a number of the second carrier.
An eNB, located in a 3GPP LTE-a system, comprising:
the first module distributes numbers for each carrier according to the frequency point or PCI of each carrier in the LTE-A system according to a preset number distribution rule;
the second module broadcasts the frequency points or the PCIs of all carriers in the LTE-A system to each UE;
and a third module, configured to send a downlink control signaling for the second carrier to the UE on the first carrier, where the signaling includes a number of the second carrier.
Compared with the prior art, in the invention, the eNB distributes the numbers for the carriers according to the frequency points or the PCIs of the carriers, and when the downlink control signaling aiming at the second carrier is sent to the first UE on the first carrier, the numbers of the second carrier are put into the signaling, so that the first UE can determine the frequency points or the PCIs of the second carrier according to the numbers of the second carrier, and then execute the content of the downlink control signaling on the second carrier corresponding to the frequency points or the PCIs. The invention realizes the transmission of the downlink control information of a plurality of carriers on one carrier.
Drawings
Fig. 1 is a flowchart of a cross-carrier downlink control channel indication method according to an embodiment of the present invention;
fig. 2 is a flowchart of a cross-carrier downlink control channel indication method according to a second embodiment of the present invention;
fig. 3 is a composition diagram of a cross-carrier downlink control channel indication system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a flowchart of a cross-carrier downlink control channel indication method according to an embodiment of the present invention, as shown in fig. 1, the specific steps are as follows:
step 101: an Evolution Base station (eNB) allocates a unique number to a carrier of each frequency point according to a preset number allocation rule according to the frequency point of each carrier in the LTE-a system, and broadcasts the allocation rule to all User Equipments (UEs) in the system.
The preset number allocation rule may be configured in advance on the eNB, or may be predetermined by the eNB and all UEs.
The number of the carriers can be represented by N (N is a non-negative integer) bit binary digits.
The numbering assignment rule may be as follows:
according to a rule I, the carriers of the frequency points are numbered as 0, 1, 2 and 3 in sequence according to the frequency points from small to large or from large to small.
Rule two, according to the sequence of the frequency points determined by the eNB to be broadcast to the UE in step 102, sequentially numbering the carriers of the frequency points as 0, 1, 2, 3, ·. If there are frequency points a, b, c, and d, the eNB determines that the order of broadcasting the frequency points to the UE in step 102 is b, c, a, and d, and the numbers of the carriers of the frequency points b, c, a, and d are 0, 1, 2, and 3, respectively.
Step 102: and the eNB broadcasts the frequency points of all carriers in the system to all the UE in the system.
In this step, the eNB may broadcast the frequency points of all carriers in the system to the UE through a system message, and the system message may be carried in a Radio Resource Control (RRC) signaling.
If the number allocation rule I is adopted, the eNB can not consider the broadcasting sequence of the frequency points; if the second number allocation rule is adopted, the eNB needs to record the corresponding relationship between the frequency point and the number of each carrier after determining the broadcast sequence of each frequency point, so as to serve as a basis for subsequently issuing the downlink control signaling.
Step 103: and the UE receives and records the frequency points of all carriers in the system transmitted by the eNB.
Step 104: the eNB transmits downlink control signaling for carrier a to UE1 on carrier B, places the number of carrier a in the downlink control signaling, and sends the downlink control signaling to UE1 on carrier B.
Step 105: the UE1 receives the downlink control signaling, reads the number of the carrier a from the signaling, determines the frequency point of the carrier a according to the number allocation rule and the frequency points of all carriers in the system recorded in step 103, and executes the content in the downlink control signaling on the carrier a corresponding to the frequency point.
In practical applications, if the number allocation rule is configured on the eNB in advance by the administrator, in step 101, the eNB may also broadcast the allocation rule to all UEs in the system together with the frequency points of all carriers in the system in step 102 instead of broadcasting the allocation rule to all UEs, or directly broadcast the correspondence between the frequency points and the numbers of the carriers in step 102 to all UEs.
If the eNB broadcasts the correspondence between the frequency point and the number of each carrier to all the UEs in step 102, the UEs need to record the correspondence between the frequency point and the number of each carrier, and in step 105, the UE1 may directly find the frequency point of the carrier a according to the correspondence.
Fig. 2 is a flowchart of a cross-carrier downlink control channel indication method according to a second embodiment of the present invention, and as shown in fig. 2, the specific steps are as follows:
step 201: for each UE adopting the aggregation carrier in the LTE-A system, the eNB allocates a unique number to the carrier of each frequency point in the aggregation carrier set of the UE according to the frequency point of each carrier in the aggregation carrier set of the UE and a preset carrier number allocation rule of the UE, and sends the carrier number allocation rule of the UE to the UE.
The preset carrier number allocation rule of each UE may be pre-configured on the eNB, or may be agreed by the eNB and each UE.
The carrier number allocation rule of each UE may be the same or different.
Also, the number of carriers of each UE may be represented by N (N is a non-negative integer) bit binary numbers.
The numbering assignment rule may be as follows:
according to a rule one, according to the frequency points of the carriers in the aggregation carrier set of the UE, the carriers of the frequency points are numbered as 0, 1, 2, 3, and.
Rule two, according to the sequence of each frequency point determined by the eNB to be sent to the UE in step 202, the carriers of each frequency point are numbered as 0, 1, 2, 3, and. For example: if the frequency points of the carriers in the aggregated carrier set of the UE are a, b, c, and d, and the eNB determines that the order of transmitting the frequency points of the carriers to the UE in step 202 is b, c, a, and d, the numbers of the carriers of the frequency points b, c, a, and d are 0, 1, 2, and 3, respectively.
Step 202: for each UE, the eNB sends the frequency points of the carriers in the aggregation carrier set of the UE to the UE.
In this step, the eNB may perform common signaling such as: the system message can also send the frequency point of the carrier to the UE through a special control signaling, and the public signaling or the special control signaling can be carried on the RRC signaling.
Step 203: and the UE receives and records the frequency points of the carriers in the aggregation carrier set of the UE.
Step 204: the eNB transmits downlink control signaling for carrier a to UE1 on carrier B, places the number of carrier a in the downlink control signaling, and sends the downlink control signaling to UE1 on carrier B.
Step 205: the UE1 receives the downlink control signaling, reads the number of the carrier a from the signaling, determines the frequency point of the carrier a according to the number allocation rule and the frequency point of the carrier in the aggregated carrier set of the UE1 recorded in step 203, and executes the content in the downlink control signaling on the carrier a corresponding to the frequency point.
Similarly, in practical applications, if the carrier number allocation rule of each UE is configured on the eNB in advance by the administrator, in step 201, the eNB may also send the allocation rule of each UE to the corresponding UE in step 202 instead of sending the allocation rule of each UE to the corresponding UE, or directly send the allocation rule of each UE to the corresponding UE in step 202 along with the frequency points of the carriers in the aggregated carrier set of the UE, or directly send the correspondence between the frequency points and the numbers of the carriers in the aggregated carrier set of each UE to the corresponding UE in step 202.
If the eNB sends the carrier number allocation rule of each UE and the frequency points of the carriers in the aggregated carrier set of the UE to the corresponding UE in step 202, each UE needs to record the corresponding relationship between the frequency points and the numbers of the carriers in the aggregated carrier set of the UE, and in step 205, the UE1 may directly find the frequency point of the carrier a according to the corresponding relationship.
In the embodiments shown in fig. 1 and 2, numbers are allocated to carriers according to frequency points of the carriers, and in practical applications, numbers may also be allocated to carriers according to Physical Channel Identifiers (PCIs) of the carriers, at this time, all the "frequency points" in the embodiments shown in fig. 1 and 2 need to be replaced by the "PCIs", and at the same time, after "the UE1 reads the number of the carrier a from the signaling" in step 105, the UE1 needs to synchronize with the carriers in the system to obtain the PCIs of each carrier; after "UE 1 reads the number of carrier a from the signaling" in step 205, the UE1 needs to synchronize with the carriers in the aggregated carrier set of UE1 to obtain the PCIs of each carrier.
Fig. 3 is a composition diagram of a cross-carrier downlink control channel indication system according to an embodiment of the present invention, where the system is located in a 3GPP LTE-a system, and as shown in fig. 3, the cross-carrier downlink control channel indication system includes: eNB and UE, wherein:
eNB: according to a preset number distribution rule, distributing numbers for each carrier according to the frequency point or PCI of each carrier of the LTE-A system; broadcasting the frequency points or the PCIs of all carriers in the LTE-A system to each UE; and sending downlink control signaling aiming at the second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier.
UE: receiving a downlink control signaling from a first carrier, reading the number of a second carrier from the signaling, determining the frequency point or PCI of the second carrier according to the number of the second carrier, and executing the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI.
In addition, the eNB may further include: means for broadcasting a number assignment rule to each UE;
and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the number distribution rule.
Alternatively, the eNB may further include: a module for broadcasting the corresponding relationship of the frequency point, one of the PCIs and the number of all carriers in the LTE-A system to each UE;
and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
A cross-carrier downlink control channel indication system provided in embodiment two of the present invention is provided below, where the system is located in a 3GPP LTE-a system, and the cross-carrier downlink control channel indication system includes: eNB and UE, wherein:
eNB: for each UE adopting the aggregated carriers, distributing numbers for the carriers according to the frequency points or PCIs of the carriers in the aggregated carrier set of the UE according to a preset carrier number distribution rule of the UE; sending the frequency point or PCI of each carrier in the aggregation carrier set of each UE to the UE; and sending downlink control signaling aiming at the second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier.
UE: and receiving the downlink control signaling from the first carrier, reading the number of the second carrier from the signaling, determining the frequency point or PCI of the second carrier according to the number of the second carrier, and executing the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI.
In addition, the eNB may further include: a module for sending the corresponding relationship between the frequency point, one of the PCIs and the number of each carrier in the aggregated carrier set of each UE to the UE;
and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
The structure of the eNB provided in the first embodiment of the present invention is as follows, where the eNB is located in a 3GPP LTE-a system, and the eNB includes:
a first module: and according to a preset number distribution rule, distributing numbers for the carriers according to the frequency points or the PCIs of the carriers in the LTE-A system.
A second module: and broadcasting the frequency points or the PCIs of all carriers in the LTE-A system to each UE.
A third module: and sending downlink control signaling aiming at the second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier.
The following provides a structure of an eNB according to a second embodiment of the present invention, where the eNB is located in a 3GPP LTE-a system, and the eNB includes:
a first module: and for each UE adopting the aggregated carrier, according to a preset carrier number distribution rule of the UE, distributing a number for each carrier according to the frequency point or PCI of each carrier in the aggregated carrier set of the UE.
A second module: and sending the frequency point or PCI of each carrier in the aggregation carrier set of each UE to the UE.
A third module: and sending downlink control signaling aiming at the second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier.
The technical scheme provided by the invention can be applied to a 3GPP LTE-A system.
The above-described embodiments of the process and method are merely exemplary and not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A cross-carrier downlink control channel indication method is applied to a 3 rd generation mobile communication partner project long term evolution technology follow-up enhanced version 3GPP LTE-A system, and is characterized by comprising the following steps:
for each user equipment UE adopting the aggregated carrier, an evolution base station eNB sends a frequency point or a Physical Cell Identifier (PCI) of each carrier in an aggregated carrier set of the UE to the UE;
the eNB sends a downlink control signaling aiming at a second carrier to the first UE on the first carrier, wherein the signaling comprises the number of the second carrier;
the first UE receives the downlink control signaling, reads the number of the second carrier from the signaling, determines the frequency point or PCI of the second carrier according to the number of the second carrier, and executes the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI;
before the eNB sends the frequency point or PCI of each carrier in the aggregated carrier set of the UE to the UE, the method further includes: for each UE adopting the aggregated carrier, the eNB distributes a number for each carrier according to a preset carrier number distribution rule of the UE and the frequency point or PCI of each carrier in the aggregated carrier set of the UE, and sends the carrier number distribution rule of the UE to the UE; and, the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes: the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the carrier number distribution rule of the first UE;
or, the eNB sending the frequency point or the PCI of each carrier in the aggregated carrier set of the UE to the UE includes: the eNB sends one of the frequency point and the PCI of each carrier in the aggregation carrier set of the UE and the carrier number distribution rule of the UE to the UE; and, the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes: the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the carrier number distribution rule of the first UE;
or, the eNB sending the frequency point or the PCI of each carrier in the aggregated carrier set of the UE to the UE includes: the eNB sends the corresponding relation of the frequency point, one of the PCIs and the number of each carrier in the aggregation carrier set of the UE to the UE; and, the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes: the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the corresponding relation;
the carrier number allocation rule is as follows:
allocating serial numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the aggregation carrier set of the UE from small to large;
or:
allocating serial numbers to the carriers in sequence according to the descending of the frequency point or PCI of each carrier in the aggregation carrier set of the UE;
or:
and numbering each carrier in sequence according to the sequence of transmitting the frequency point or PCI of each carrier in the aggregation carrier set of the UE to the UE.
2. The method of claim 1, wherein the step of the eNB sending the frequency point or the PCI of each carrier in the aggregated carrier set of the UE to the UE is:
and the eNB sends the frequency point or PCI of each carrier in the aggregation carrier set of the UE to the UE through a dedicated control signaling or a common signaling carried on the RRC signaling.
3. The method of claim 1, wherein the number is a binary number.
4. A cross-carrier downlink control channel indication method is applied to a 3 rd generation mobile communication partner project long term evolution technology follow-up enhanced version 3GPP LTE-A system, and is characterized by comprising the following steps:
an evolution base station eNB broadcasts frequency points or Physical Cell Identifications (PCI) of all carriers in a system to User Equipment (UE);
the eNB sends a downlink control signaling aiming at a second carrier to the first UE on the first carrier, wherein the signaling comprises the number of the second carrier;
the first UE receives the downlink control signaling, reads the number of the second carrier from the signaling, determines the frequency point or PCI of the second carrier according to the number of the second carrier, and executes the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI;
before the eNB broadcasts the frequency points or PCIs of all carriers in the system to each UE, the method further includes: according to a preset number distribution rule, the eNB distributes numbers for all carriers according to the frequency points or the PCIs of all carriers in the system, and broadcasts the number distribution rule to all UEs; and, the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes: the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the number distribution rule;
or, the broadcasting, by the eNB, the frequency points or the PCIs of all carriers in the system to each user equipment UE includes: the eNB broadcasts one of the frequency points and the PCIs of all carriers in the system to each UE together with the number distribution rule; and, the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes: the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the number distribution rule;
or, the broadcasting, by the eNB, the frequency points or the PCIs of all carriers in the system to each UE includes: the eNB broadcasts the corresponding relation of the frequency point, one of the PCIs and the number of all the carriers in the system to each UE; and, the determining, by the first UE, the frequency point or the PCI of the second carrier according to the number of the second carrier includes: the first UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the corresponding relation;
the number distribution rule is as follows:
allocating serial numbers for the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from small to large;
or:
allocating serial numbers for the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from large to small;
or:
and numbering each carrier in sequence according to the sequence of broadcasting the frequency point or PCI of each carrier in the system to the UE.
5. The method of claim 4, wherein the step of broadcasting the frequency points or PCIs of all carriers in the system to each UE by the eNB is:
and the eNB broadcasts the frequency points or the PCIs of all carriers in the system to each UE through a system message carried on the radio resource control RRC signaling.
6. The method of claim 4, wherein the number is a binary number.
7. A cross-carrier downlink control channel indication system in a 3GPP LTE-A system, the cross-carrier downlink control channel indication system comprising: eNB and UE, wherein:
the eNB sends the frequency point or the Physical Cell Identifier (PCI) of each carrier in the aggregated carrier set of each UE to the UE; sending a downlink control signaling aiming at a second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier;
UE, receiving the downlink control signaling from the first carrier, reading the number of the second carrier from the signaling, determining the frequency point or PCI of the second carrier according to the number of the second carrier, and executing the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI;
the eNB further comprises: a module configured to allocate, to each UE that employs aggregated carriers, a number for each carrier according to a preset carrier number allocation rule of the UE and according to a frequency point or a PCI of each carrier in an aggregated carrier set of the UE, where the eNB sends the carrier number allocation rule of the UE to the UE, the UE determines the frequency point or the PCI of a second carrier according to the number of the second carrier and the carrier number allocation rule of the UE, and the carrier number allocation rule is: allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE from small to large, or allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE from large to small, or allocating numbers to the carriers in sequence according to the sequence of sending the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE to the UE;
or, the eNB further includes: and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
8. A cross-carrier downlink control channel indication system in a 3GPP LTE-A system, the cross-carrier downlink control channel indication system comprising: eNB and UE, wherein:
the eNB broadcasts the frequency points or the Physical Cell Identifiers (PCI) of all carriers in the LTE-A system to each UE; sending a downlink control signaling aiming at a second carrier to the UE on the first carrier, wherein the signaling comprises the number of the second carrier;
the UE receives the downlink control signaling from the first carrier, reads the number of the second carrier from the signaling, determines the frequency point or PCI of the second carrier according to the number of the second carrier, and executes the content of the downlink control signaling on the second carrier corresponding to the frequency point or PCI;
the eNB further comprises: the system comprises a module for allocating numbers for each carrier according to the frequency points or the PCIs of each carrier of the LTE-A system according to a preset number allocation rule, and a module for broadcasting the number allocation rule to each UE, wherein the UE determines the frequency points or the PCIs of the second carrier according to the number of the second carrier and the number allocation rule, and the number allocation rule is as follows: allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from small to large, or allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from large to small, or sequentially allocating numbers to the carriers according to the sequence of broadcasting the frequency points or the PCIs of the carriers in the system to the UE;
or, the eNB further includes: and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
9. An eNB in a 3GPP LTE-A system, comprising:
the first module is used for sending the frequency point or the Physical Cell Identifier (PCI) of each carrier in the aggregated carrier set of each UE to the UE;
a second module, configured to send a downlink control signaling for a second carrier to the UE on the first carrier, where the signaling includes a number of the second carrier;
a third module, configured to allocate, for each UE that uses an aggregated carrier, a number to each carrier according to a preset carrier number allocation rule of the UE and according to a frequency point or a PCI of each carrier in an aggregated carrier set of the UE, where the carrier number allocation rule is: allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE from small to large, or allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE from large to small, or allocating numbers to the carriers in sequence according to the sequence of sending the frequency points or the PCIs of the carriers in the aggregated carrier set of the UE to the UE;
the eNB sends the carrier number distribution rule of the UE to the UE, the UE determines the frequency point or PCI of the second carrier according to the number of the second carrier and the carrier number distribution rule of the UE, or the eNB sends one of the frequency point and the PCI of each carrier in the aggregated carrier set of the UE and the corresponding relation of the number to the UE, and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
10. An eNB in a 3GPP LTE-A system, comprising:
the first module broadcasts frequency points or Physical Cell Identifiers (PCI) of all carriers in an LTE-A system to each UE;
a second module, configured to send a downlink control signaling for a second carrier to the UE on the first carrier, where the signaling includes a number of the second carrier;
the third module distributes numbers for each carrier wave according to the frequency point or PCI of each carrier wave in the LTE-A system according to a preset number distribution rule, wherein the number distribution rule is as follows: allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from small to large, or allocating numbers to the carriers in sequence according to the frequency points or the PCIs of the carriers in the system from large to small, or sequentially allocating numbers to the carriers according to the sequence of broadcasting the frequency points or the PCIs of the carriers in the system to the UE;
the eNB broadcasts the number distribution rule to the UE, the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the number distribution rule, or the eNB broadcasts one of the frequency point and the PCI of all carriers in the LTE-A system and the corresponding relation of the number to the UE, and the UE determines the frequency point or the PCI of the second carrier according to the number of the second carrier and the corresponding relation.
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| CN102932923B (en) * | 2011-08-11 | 2018-05-11 | 中兴通讯股份有限公司 | 3G network and 4G network carriers polymerization and system |
| CN103313404B (en) | 2012-03-16 | 2017-06-13 | 华为技术有限公司 | A kind of control channel resource transmission method, user equipment and base station |
| EP3197220B1 (en) | 2012-03-23 | 2019-07-31 | HFI Innovation Inc. | Method for physical layer multi-point carrier aggregation |
| CN103812625B (en) * | 2012-11-07 | 2017-11-24 | 上海贝尔股份有限公司 | A kind of method and apparatus for determining Downlink Control Information based on carrier aggregation |
| MX2020005135A (en) | 2017-11-15 | 2020-08-17 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Method for determining non-contention random access resource, network device and terminal device. |
| CN111869269B (en) * | 2018-03-15 | 2022-05-24 | 华为技术有限公司 | Communication method, communication device and system |
| CN111901837A (en) * | 2020-02-14 | 2020-11-06 | 中兴通讯股份有限公司 | Transmission method of control signaling and communication node |
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