WO2013064056A1

WO2013064056A1 - Carrier configuration method and system

Info

Publication number: WO2013064056A1
Application number: PCT/CN2012/083738
Authority: WO
Inventors: 苟伟; 张峻峰; 夏树强; 戴博
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-11-02
Filing date: 2012-10-30
Publication date: 2013-05-10
Also published as: CN103096329A

Abstract

Disclosed is a carrier configuration method, including: a base station determining the correlation between a carrier and a component carrier paired therewith; the base station configuring a primary/secondary synchronization signal PSS/SSS or a CRS (cell-specific reference signal) in the carrier according to the correlation. Also accordingly disclosed is a carrier configuration system. The present invention can reduce the frequency resource consumption of carriers by synchronization channels and reference signals while ensuring that the UE can maintain downlink synchronization when operating in the carriers, thus improving the resource utilization rate of the carriers.

Description

Carrier configuration method and system

The present invention relates to the field of mobile wireless communications, and in particular, to a carrier configuration method and system. Background technique

With the development of the mobile communication industry and the growing demand for mobile data services, people are increasingly demanding the speed and quality of service (Qos) of mobile communications, so there is no big third-generation mobile communication (3G). Before the scale of commercial use, research and development work on the next generation mobile communication system has begun, and the typical one is the Long Term Evolution (LTE) project initiated by the 3rd Generation Partnership Project (3GPP), the highest spectrum that the LTE system can provide. The bandwidth is 20MHz (megahertz). With the further evolution of the network, LTE-A (Evolved LTE) as an evolution system of LTE can provide spectrum bandwidth of up to 100MHz, support more flexible and higher quality communication, and LTE-A system has good backward compatibility. . In the LTE-A system, there are multiple component carriers (CCs), one LTE terminal can only work on one backward compatible CC, and the stronger LTE-A terminal can simultaneously on multiple CCs. Transfer. That is, the terminal implementing LTE-A simultaneously transmits and receives data in multiple component carriers, thereby achieving the purpose of increasing bandwidth. This technique is known as multi-carrier aggregation technology.

The multi-carrier aggregation technology is supported in the LTE-A system, and data is transmitted through a multi-carrier aggregation to achieve a larger bandwidth. The base station subordinates up to 5 carriers, which are called component carriers, and are carriers with backward compatibility. With the progress of standardization, the protocol provides for the introduction of relay nodes. There are various types of relays, such as Pico, femto, RRH, etc. (here, the relay node here uses RRH as an example), so some carriers need to pass the RRH. After the relay, it can reach the UE, as shown in Figure 1.

These carriers are of backward compatibility, the configuration is fixed, each one The configuration of the carrier is the same. However, in practical applications, it is not necessary to configure each carrier separately as a carrier with backward compatibility, because each channel and reference signal supporting the old version are configured in the backward compatible carrier, and these channels and The reference signal affects the efficiency of the carrier to a certain extent. With the advancement of technology, the efficiency of these channels and reference signals is significantly reduced, especially when the number of old versions of UEs in the system is small, because the old version of the UE After all, the historical stage will be slowly introduced. Therefore, after researching on a multi-carrier system, a carrier configuration method is proposed, which can effectively improve the resource utilization of the carrier. Summary of the invention

In view of this, the main object of the present invention is to provide a carrier configuration method and system, which can improve the resource utilization of a carrier.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

A carrier configuration method includes:

The base station determines a correspondence between the carrier and the component carrier paired therewith;

The base station configures the primary and secondary synchronization signals PSS/SSS and/or the cell-specific reference signal CRS in the carrier according to the correspondence.

After the base station determines the correspondence between the carrier and the component carrier paired thereto, the method further includes:

The base station sends the corresponding relationship to the UE through point-to-multipoint system broadcast information or RRC signaling, or the base station sends the correspondence to the UE through point-to-point RRC signaling or a dedicated control channel.

After the base station determines the correspondence between the carrier and the component carrier paired therewith, the method further includes: the base station notifying the corresponding relationship to the UE that is to be or is working in the carrier.

The base station determines the correspondence between the carrier and the component carrier paired with it:

The base station preferentially selects component carriers within the same band as the paired carriers for the carrier. The base station determines the correspondence between the carrier and the component carrier paired with it: The base station preferentially configures the same transmission node for the carrier and the component carrier paired with it, or preferentially configures the component carrier with the same transmission node for the carrier.

The base station configures the PSS/SSS and/or CRS in the carrier according to the correspondence:

When the frequency of the carrier and the paired component carrier are in the same band, the base station notifies and indicates to the UE that there is no PSS/SSS and/or CRS configuration in the carrier;

When the frequency of the carrier and the paired component carrier are in different bands, the base station notifies and indicates to the UE, the PSS/SSS and/or CRS configuration in the carrier.

The configuration includes:

The time-frequency resources and/or periods and/or sequences of the PSS/SSS configuration, and/or the pattern and/or period and/or sequence of the CRS configuration.

The configuration situation further includes: whether the CRS and/or the PSS/SSS in the LTE R10 are configured in the carrier.

The method further includes: when the PSS/SSS in the LTE R10 is configured in the carrier, the resource location of the PSS/SSS configured by the base station is different from the resource location of the PSS/SSS in the LTE R10, and/or, in the PSS/SSS configuration The transmitted sequence is different from the sequence sent in LTE R10, and/or the transmission period of the configured PSS/SSS is different from the period of the PSS/SSS in LTER10.

When the carrier and the paired component carrier are identical in the process of arriving at the UE, the base station notifies and indicates to the UE that there is no PSS/SSS and/or CRS configuration in the carrier;

When the carrier and the component carrier are not identical in the process of arriving at the UE, the base station informs and indicates to the UE, the PSS/SSS and/or CRS configuration in the carrier.

The configuration includes:

Time-frequency resources and/or periods and/or sequences of PSS/SSS configurations, and/or patterns of CRS configurations And / or cycle and / or sequence.

The configuration also includes: whether CRS and/or PSS/SSS in LTE R10 are configured in the carrier.

The method further includes: when the PSS/SSS in the LTE R10 is configured in the carrier, the base station configures the resource location of the PSS/SSS differently from the resource location of the PSS/SSS in the LTE R10, and/or configures the PSS/ The sequence transmitted in the SSS is different from the sequence transmitted in LTE R10.

After the base station configures the PSS/SSS and/or the CRS in the carrier according to the corresponding relationship, the method further includes:

The base station notifies the UE of the configuration information. When the UE working in the carrier knows that the PSS/SSS and/or the CRS are configured in the carrier, the UE uses the PSS/SSS and/or CRS in the carrier to perform synchronization with the carrier.

The base station notifies the UE whether the PSS/SSS and/or the CRS in the LTE R10 are configured in the carrier by using the paired component carrier of the carrier, where the UE learns that the PSS/SSS and/or the LTE R10 are not configured in the carrier. Or the CRS, or when the UE learns that the PSS/SSS and/or the CRS are not configured in the carrier, the UE considers that the carrier is synchronized with the paired component carrier, and the UE considers that the component carrier is synchronized with the component carrier, that is, the implementation and the Synchronization of the carrier; when the UE learns that the carrier is configured with PSS/SSS and/or CRS of LTE R10, or when the UE learns that the carrier is configured with PSS/SSS and/or CRS, the UE considers the carrier The paired component carriers are not synchronized, and the UE synchronizes with the carrier by using PSS/SSS and/or CRS in the carrier.

The base station notifies and indicates the PSS/SSS and/or in the carrier by the paired component carrier of the carrier. Or CRS configuration information.

When the base station configures the PSS/SSS and/or the CRS in the carrier according to the corresponding relationship, the method further includes:

The base station notifies the configuration of the system frame number and/or the physical broadcast channel PBCH in the carrier by using the component carrier, where the configuration of the PBCH refers to whether the PBCH is configured in the carrier, or the location and/or period of the PBCH configuration.

A carrier configuration system, comprising: a correspondence determining unit and a configuration unit; wherein the corresponding relationship determining unit is configured to determine a correspondence between a carrier and a component carrier paired thereto;

The configuration unit is configured to configure PSS/SSS and/or CRS in the carrier according to the correspondence determined by the correspondence determining unit.

The system further includes a communication unit, configured to send the correspondence determined by the correspondence determining unit to the UE by using point-to-multipoint system broadcast information or RRC signaling, or by using the point-to-point RRC The signaling or dedicated control channel is sent to the UE.

The communication unit is further configured to notify and indicate to the UE when the frequency of the carrier and the paired component carrier are in the same band, where there is no PSS/SSS and/or CRS configuration in the carrier; and frequency of the carrier and the paired component carrier When the points are at different bands, the UE is notified and instructed, the PSS/SSS and/or CRS configuration in the carrier.

The configuration unit is further configured to: when the PSS/SSS in the LTE R10 is configured in the carrier, configure the resource location of the PSS/SSS to be different from the resource location of the PSS/SSS in the LTE R10, and/or configure the PSS/SSS The sequence transmitted in is different from the sequence transmitted in LTE R10, and/or the transmission period in which the PSS/SSS is configured is different from the period in the PSS/SSS in LTER 10.

The communication unit is further configured to notify and indicate to the UE that there is no PSS/SSS and/or CRS configuration in the carrier when the carrier and the paired component carrier are completely identical in the process of arriving at the UE; and in the carrier and component The transit nodes experienced by the carrier arriving at the UE are not identical. At the time, the UE is notified and instructed, the PSS/SSS and/or CRS configuration in the carrier.

The configuration unit is further configured to: when the PSS/SSS in the LTE R10 is configured in the carrier, configure the resource location of the PSS/SSS different from the resource location of the PSS/SSS in the LTE R10, and/or configure the PSS The sequence sent in /SSS is different from the sequence sent in LTE R10.

The communication unit is further configured to notify the UE of the configuration information after the configuration unit configures the PSS/SSS and/or the CRS in the carrier.

The communication unit is further configured to notify, by using a component carrier, a system frame number and/or a PBCH configuration in the carrier, where the configuration of the PBCH refers to whether a PBCH is configured in the carrier, or a location and/or a period of the PBCH configuration.

A carrier configuration method, including:

The base station determines a synchronization component carrier of the carrier, and transmits the synchronization component carrier information of the carrier to the UE.

The transmitting the synchronization component carrier information of the carrier to the UE is:

The base station sends the synchronization component carrier information of the carrier to the UE through point-to-multipoint system broadcast information or RRC signaling, or the base station passes the synchronization component carrier information of the carrier through point-to-point RRC signaling or dedicated control. The channel is sent to the UE.

The base station determines that the synchronization component carrier of the carrier is:

The base station selects a component carrier within the same band as its synchronization component carrier for the carrier. The synchronization component carrier information includes: whether a CRS and/or a PSS/SSS in the LTE R10 is configured in the carrier; or a component carrier synchronized with the carrier.

The UE maintains synchronization with the synchronization component carrier using PSS/SSS and/or CRS in the synchronization component carrier of the carrier, i.e., synchronizes with the carrier.

The base station notifies the UE of the component carrier synchronized with the carrier, indicating that no PSS/SSS and/or CRS is configured in the carrier.

A carrier configuration method includes: Receiving, by the UE, PSS/SSS and/or CRS configuration information of the carrier sent by the base station, or receiving synchronization component carrier information of the carrier sent by the base station;

The UE determines, according to the received information, whether there is PSS/SSS and/or CRS transmission in the carrier. The UE receives the PSS/SSS and/or CRS configuration information of the carrier sent by the base station, or receives the synchronization component carrier information synchronization component carrier information of the carrier transmitted by the base station: the UE broadcasts information or RRC signaling through the point-to-multipoint system. Receiving, or, the UE receives through point-to-point RRC signaling or a dedicated control channel.

The synchronization component carrier information includes: whether a CRS and/or a PSS/SSS in the LTE R10 is configured in the carrier; or a component carrier synchronized with the carrier.

The method further includes: receiving, by the UE, synchronization component carrier information of the carrier notified by the base station, determining that the PSS/SSS and/or the CRS are not configured in the carrier.

The method further includes: determining that the carrier does not have a synchronization component carrier, and determining that the carrier has a PSS/SSS and/or a CRS.

In the carrier configuration method and system according to the embodiment of the present invention, the base station determines a correspondence between a carrier and a component carrier paired thereto; and the base station compares the primary and secondary synchronization signals PSS/SSS and/or CRS in the carrier according to the correspondence relationship. Cell-specific reference signals are configured for cell-specific reference signals. The invention can reduce the frequency resource consumption of the synchronization channel and the reference signal for the carrier while ensuring the downlink synchronization while the UE is working in the carrier, thereby improving the resource utilization of the carrier. DRAWINGS

Figure 1 is a schematic diagram of multi-carrier aggregation with RRH relay;

2 is a schematic flowchart of a carrier configuration method according to an embodiment of the present invention;

3 is a schematic diagram of pairing according to an embodiment of the present invention; FIG. 4 is another schematic diagram of pairing according to an embodiment of the present invention. detailed description

The basic idea of the present invention is: a base station determines a correspondence between a carrier and a component carrier paired therewith (the carrier and the component carrier in the description are two nouns, which are two carriers); the base station according to the correspondence relationship to the carrier in the corresponding relationship PSS/SSS and/or reference signals are configured. For the carrier, the reference signal therein may be dynamically or semi-statically configured, and the configuration information is sent to the UE through the component carrier, so that the reference signal in the carrier is more efficient. Here, the reference signal may be a CRS. Although it is an existing reference signal, its efficiency is relatively low, but the present invention also includes, because in the present invention, the reference signal can be not configured in the carrier by signaling, so even CRS, if CRS is not configured in the carrier, it can also play a role in improving carrier efficiency. The following describes the CRS as an example for convenience of description.

2 is a schematic flowchart of a carrier configuration method according to an embodiment of the present invention. As shown in FIG. 2, the method includes:

Step 201: The base station determines a correspondence between the carrier and the component carrier paired therewith.

Step 202: The base station configures PSS/SSS and/or CRS in the carrier according to the correspondence.

Optionally, after step 201, the method further includes:

Optionally, after step 201, the method further includes: the base station notifying the corresponding relationship to a UE that is to be working or is working in a carrier.

Optionally, in step 201, the base station determines that the carrier and the corresponding component carrier are in a corresponding relationship: the corresponding component carrier configured by the base station for the carrier is in the same band as the frequency of the carrier, or is in a different band. Within the base station, the base station preferentially selects the same band for the carrier. The component carrier acts as its paired carrier.

Optionally, in step 201, the base station determines the correspondence between the carrier and the component carrier paired with the base station is: the base station configures the same transmission node or the different transmission node for the carrier and its paired component carrier; or the base station configures the carrier A component carrier having the same or different transmission nodes is used as its pairing carrier, and the base station preferentially configures the same transmission node for the carrier and the component carrier paired with it, or preferentially configures a component carrier having the same transmission node for the carrier.

Optionally, in step 202, the base station configures the PSS/SSS and/or the CRS in the carrier according to the correspondence:

When the frequency of the carrier and the paired component carrier are in the same band, the base station notifies and indicates the UE, and there is no PSS/SSS and/or CRS configuration in the carrier; when the UE learns that the carrier is not configured with PSS/SSS and/or CRS And the UE uses the PSS/SSS and/or the CRS in the component carrier of the carrier pair to implement synchronization with the carrier, that is, the UE keeps synchronizing with the component carrier, and the carrier synchronization is implemented.

The configuration may include: time-frequency resources and/or periods and/or sequences of PSS/SSS configurations, and/or patterns and/or periods and/or sequences of CRS configurations.

The configuration may further include: whether the LTE RIO is configured in the carrier (the configurations of the CRS and/or the PSS/SSS in the LTE R8, R9, and R10 are the same, where the LTE R10 refers to the LTE R8/R9/R10 CRS and/or PSS/SSS in the specification requirements).

Optionally, the method further includes: when the PSS/SSS is configured in the carrier, the resource location of the PSS/SSS configured by the base station is different from the resource location of the PSS/SSS in the LTE R10, and/or, in the PSS/SSS configuration The sequence sent is different from the sequence sent in LTE R10, and/or the transmission period of the configured PSS/SSS is different from the period of PSS/SSS in LTER10 to avoid erroneous access by the LTE RIO UE. Optionally, the method further includes: when the CRS is configured in the carrier, the CRS of the base station is the same as the CRS of the LTE R10, and when the reference signal different from the CRS is configured in the carrier, the base station notifies the UE by using the component carrier, The pattern and/or period of the reference signal different from the CRS.

The configuration may further include: whether CRS and/or PSS/SSS in LTE R10 are configured in the carrier.

Optionally, the method further includes: when the PSS/SSS is configured in the carrier, the base station configures the resource location of the PSS/SSS differently from the resource location of the PSS/SSS in the LTE RIO, and/or configures the PSS/ The sequence sent in the SSS is different from the sequence sent in LTE R10 to avoid false access by the R10 UE.

Optionally, after step 201, the method further includes:

The base station notifies the UE whether the PSS/SSS and/or CRS in the LTE R10 is configured in the carrier by using the paired component carrier of the carrier. For example, direct use signaling indicates that the carrier is The PSS/SSS and/or CRS in the LTE RIO are configured; indirect signaling may also be used, for example, the base station notifies the UE that the component carrier(s) are synchronized with the carrier, when the UE learns the carrier and the certain A component carrier is synchronized, and the UE considers that the PSS/SSS and/or CRS in the LTE R10 is not configured in the carrier, otherwise the PSS/SSS and/or CRS in the LTE R10 is considered to be configured in the carrier. In summary, it is necessary to enable the UE to know whether the PSS/SSS and/or CRS in the LTE R10 is configured in the carrier.

The base station notifies and indicates the configuration information of the PSS/SSS and/or CRS in the carrier through the paired component carrier of the carrier.

Optionally, in step 202, the base station notifies the configuration of the system frame number and/or the PBCH (Physical Broadcast Channel) in the carrier by using the component carrier, where the configuration of the PBCH refers to whether the PBCH is configured in the carrier, or The location and/or period of the PBCH configuration.

Specifically, the present invention provides a method for a base station to determine whether a PSS/SSS and/or CRS configuration is required for a paired carrier through the carrier, for example, for a carrier without PSS/SSS and/or CRS, such as an extended carrier ( A non-backward compatible carrier that is not independently operated must be paired with a backward compatible carrier. As a part of the backward compatible carrier, it is operated by carrier aggregation. The carrier size must be the existing LTE system. If specified, a carrier that cannot be operated as a single carrier (stand-alone), but must be a part of a component carrier The set where at least one of the carriers in the set is a stand-alone-capable carrier ) can be implemented according to the solution of the present invention, and the base station can adjust the PSS/SSS and/or in the carrier by flexible signaling. Or CRS configuration. If configured without PSS/SSS and/or CRS, or with PSS/SSS and/or CRS, and sent to the UE for PSS/SSS and/or CRS configuration. In a multi-carrier system, the number of carriers subordinate to the base station is large, and the use of each carrier should be flexible. Therefore, the method proposes to configure PSS/SSS and/or CRS for another carrier through one carrier (package). Including PSS/SSS and/or CRS with or without LTE R8/R9/R10, in some scenarios, the base station can notify the other carrier that PSS/SSS is not configured by pairing the carrier through the pairing mode. / or CRS to save resources, the UE can maintain synchronization with carriers that are not configured with PSS/SSS and/or CRS through PSS/SSS and/or CRS in the paired carriers, thereby achieving work in the carrier. When the base station changes the use of this carrier, if the PSS/SSS and/or CRS need to be configured under new usage, the base station can notify and indicate to the UE the PSS/SSS and/or CRS in the carrier through the carrier paired with the carrier. Configuration situation.

The invention can make the flexibility of using the carrier of the base station in the multi-carrier system to be enhanced, so that the PSS/SSS and/or the CRS of the carrier are dynamic, thereby achieving the purpose of saving resources without affecting the normal operation of the system. And the present invention provides a manner in which a base station uses carrier pairing to notify a PSS/SSS and/or CRS condition of a carrier paired with it using a paired carrier.

On the basis of the above, the present invention can further provide a PBCH configuration for another carrier by configuring one carrier in the carrier by the carrier pairing relationship. The specific configuration is the same as the above PSS/SSS and/or CRS. For example, it may be provided whether the PBCH is configured in another carrier, or the configuration resource location and/or period of the PBCH in another carrier.

The base station needs to determine the relationship of the paired carriers first. The pairing between the carriers may be one-to-many, many-to-one, or one-to-one. FIG. 3 and FIG. 4 are two pairing diagrams of the embodiment of the present invention, as shown in FIG. Carrier 1 is paired with carrier 2, and carrier 3 is paired with carrier 4. As shown in FIG. 4, carrier 1 is paired with carrier 2 and carrier 3, respectively.

For example, if carrier 1 is paired with carrier 2, then the PSS/SSS and/or CRS configuration in carrier 2 can be selected in carrier 1, or the PSS/SSS and/or CRS configuration in carrier 1 in carrier 2 can be selected. The PSS/SSS and/or CRS depending on which carrier in carrier 1 or carrier 2 can be reconfigured. The base station may also pair carrier 1 with carrier 2, carrier 3, ... and then indicate carrier 2, carrier 3, ... PSS/SSS and/or CRS configuration in multiple carriers through carrier 1, which is one-to-many Matching method. The base station can also carry carrier 1, carrier 2, carrier 3 Pairing with carrier 4, then indicating the PSS/SSS and/or CRS configuration of carrier 4 through carrier 1, carrier 2, and carrier 3, respectively, which is many-to-one.

The paired carriers are selected as needed. The basic principle is to prioritize carrier pairing within the same band and the transmission process experiences the same transmitting node. This can save resources by not configuring PSS/SSS and/or CRS in one carrier of the paired carrier, and the UE synchronizes with the working carrier by using PSS/SSS and/or CRS in another carrier in the paired carrier. For example, the base station determines that carrier 1 and carrier 2 are paired, and then carrier 1 and carrier 2 satisfy the above-mentioned same-band and have the same transmission node, then the base station can configure PSS/SSS and/or CRS in carrier 1, on carrier 2 The PSS/SSS and/or CRS are not configured, and the UE is notified and indicated by the carrier 1, and the PSS/SSS and/or the CRS are not configured in the carrier 2. Thus, a UE that is to be operating in carrier 2 or operating in carrier 2 can use PSS/SSS and/or CRS in carrier 1 to maintain synchronization with carrier 2.

When the above situation changes, for example, when the paired carrier 1 and carrier 2 experience different transmission nodes, the base station can notify the PSS/SSS and/or CRS configuration in carrier 2 through carrier 1. This allows for dynamic PSS/SSS and/or CRS configuration of the carriers in the system. For the existing carrier, it is also very suitable for use in the present invention. The carrier is a carrier that needs to be used together with other carriers, and is used by a convergence technique and a compatible carrier aggregation to play the role of extending the transmission bandwidth of the data domain of the compatible carrier. . Such carriers are generally not configured with PSS/SSS and/or CRS to save bandwidth resources for data transmission. However, during the use of the carrier, there are some cases where the time-frequency is not synchronized between the carrier and its paired carrier. For example, if the carrier and the paired carrier are not in the same band, or the carrier and the paired carrier experience different transmission nodes, etc., these situations may cause the UE working in the carrier to be out of synchronization with the carrier, thereby causing the UE to continue to use the carrier. In case, the base station can configure the PSS/SSS and/or CRS on the carrier and inform the UE by the carrier paired by the carrier.

Configure PSS/SSS and/or CRS here, which can be divided into LTE in the required carrier. The PSS/SSS in R8/R9/R10, and the CRS, so that the base station only needs to inform the UE in the paired carrier that there is a PSS/SSS and/or CRS in the carrier that needs to configure the PSS/SSS and/or CRS. The base station may also configure a PSS/SSS and/or a CRS different from the LTE R8/R9/R10 for the foregoing carrier, for example, configuring a transmission resource different from the PSS/SSS of the LTE R8/R9/R10, and passing the resource information through the paired carrier. The UE is notified, or a sequence different from the PSS/SSS of the LTE R8/R9/R10 is configured, and the sequence needs to be agreed with the UE in advance. The configuration of PSS/SSS different from LTE R8/R9/R10 can avoid the UE of LTE R8/R9/R10 from accessing in the carrier. If the PSS/SSS of the LTE R8/R9/R10 is configured in the carrier, the UEs of the LTE R8/R9/R10 can access, but the system broadcast information is not received after the access, so that these UEs need to be searched again. Carrier access, which has a certain impact on the UE.

Therefore, for a carrier, the base station determines a suitable component carrier for the carrier to pair, and according to the frequency of the carrier and the component carrier and/or the distribution of the transmission node, the base station determines the configuration of the PSS/SSS and/or CRS in the carrier, and The UE is notified by the component carrier. The base station may use system broadcast information or RRC signaling in the component carrier to notify the carrier pairing relationship in the UE system, so that the UE in the system knows the pairing relationship in time. The base station may also use a point-to-point manner to notify the UE that needs to work in the carrier and is working in the carrier, and the pairing relationship between the carrier and the component carrier in the system.

In addition to the above-mentioned base station prioritizing the carrier allocation in the same band and the transmission process going through the same transmission node, the base station may also pair carriers in different bands, for example, a 2 GHz carrier is paired with a 900 MHz carrier, which is also Allowed, in accordance with the present invention, the base station needs to configure independent PSS/SSS and/or CRS in a carrier of 900 MHz. The base station informs the UE through the 2 GHz carrier that PSS/SSS and/or CRS are configured in the 900 Mhz carrier. Obviously this is not the optimal pairing method, but in some cases it must be paired like this, for example, the system only has the above 2 carriers.

If there is a relay-type node such as RRH in the system, the base station is the same in the priority system. On the basis of carrier pairing within a band, it is also necessary to consider the same node in the process of transmitting the paired carrier to the UE, so as to ensure synchronization between the paired carriers, if the base station does not configure PSS/SSS and/or in one of the carriers. Or CRS, then the UE can complete the synchronization by pairing carriers. This is also a preferred solution. In the present invention, carrier pairing with different transmission nodes is allowed to be selected, but the base station needs to configure PSS/SSS and/or CRS in the carrier, and the operation is the same as above.

It is also possible here to determine whether a PSS/SSS and/or CRS is configured in the carrier in a predetermined manner. For example, in a system without a relay node such as an RRH, when the carrier determined by the base station and the component carrier paired with it are located in the same band, the default carrier is not configured with PSS/SSS and/or CRS; if not located in the same band, the default is PSS/SSS and/or CRS are configured in the carrier. Here, it can be further determined that the PSS/SSS and/or CRS configuration in the carrier is the same as that of LTE R8/R9/R10. After the base station transmits the relationship between the carrier and the component carrier to the UE, the UE can determine whether the carrier is in the same band according to the pairing relationship and the frequency information of the component carrier and the carrier, so that the UE learns the carrier. Whether PSS/SSS and/or CRS are configured in the medium, when PSS/SSS and/or CRS are configured in the carrier, the UE synchronizes using PSS/SSS and/or CRS in the carrier.

In the above various cases, the optional base station may further notify the UE of the system frame number of the carrier paired with the paired carrier to help the UE identify the accurate system frame number. The system frame number uses the above-mentioned pairing relationship transmission method.

Determining, at the base station, a pairing relationship of carriers, and determining, according to a carrier frequency point and a transmission node in the pairing relationship, whether to notify and indicate PSS/SSS and/or CRS in another carrier through one carrier in the paired carrier, and inventing It also includes notifying whether another PBCH is configured in another carrier by one of the paired carriers. The PBCH can be a PBCH structure in the LTE R8/R9/R10 system.

The present invention also correspondingly proposes a carrier configuration system, the system comprising: a correspondence determining unit and a configuration unit; The correspondence determining unit is configured to determine a correspondence between a carrier and a component carrier paired therewith;

The communication unit is further configured to notify and indicate to the UE that there is no PSS/SSS and/or CRS configuration in the carrier when the carrier and the paired component carrier are completely identical in the process of arriving at the UE; and in the carrier and component When the transport nodes experienced by the carrier arrives at the UE are not identical, the UE is notified and instructed, the PSS/SSS and/or CRS configuration in the carrier.

The communication unit is further configured to notify a system frame number in the carrier by using a component carrier and/or Configuration of the PBCH, the configuration of the PBCH refers to whether a PBCH is configured in the carrier, or a location and/or a period of the PBCH configuration.

The embodiment of the invention further provides a carrier configuration method, including:

Optionally, the sending the synchronization component carrier information of the carrier to the UE is:

Optionally, the base station determines that the synchronization component carrier of the carrier is:

The base station selects a component carrier within the same band as its synchronization component carrier for the carrier. Optionally, the synchronization component carrier information includes: whether a CRS and/or a PSS/SSS in the LTE R10 is configured in the carrier; or a component carrier that is synchronized with the carrier.

Optionally, the UE maintains synchronization with the synchronization component carrier by using PSS/SSS and/or CRS in the synchronization component carrier of the carrier, that is, synchronization with the carrier.

Optionally, the base station notifies the UE of the component carrier synchronized with the carrier, indicating that no PSS/SSS and/or CRS is configured in the carrier.

The UE receives PSS/SSS and/or CRS configuration information of the carrier transmitted by the base station, or receives synchronization component carrier information of the carrier transmitted by the base station;

The UE determines whether there is PSS/SSS and/or CRS transmission in the carrier according to the received information. Optionally, the UE receives the PSS/SSS and/or CRS configuration information of the carrier sent by the base station, or receives the synchronization component carrier information synchronization component carrier information of the carrier sent by the base station: the UE broadcasts the information through the point-to-multipoint system. Or RRC signaling is received, or the UE receives through point-to-point RRC signaling or a dedicated control channel. Optionally, the synchronization component carrier information includes: whether a CRS and/or a PSS/SSS in the LTE R10 is configured in the carrier; or a component carrier that is synchronized with the carrier.

Optionally, the method further includes: receiving, by the UE, synchronization component carrier information of the carrier notified by the base station, determining that the PSS/SSS and/or the CRS are not configured in the carrier.

Optionally, the method further includes: determining, by the UE, that the carrier does not have a synchronization component carrier, and determining that the carrier has a PSS/SSS and/or a CRS.

It can be seen that the present invention provides a method for configuring PSS/SSS and/or CRS in a carrier, which can increase resources of carrier transmission data without affecting carrier synchronization. Application of technical means to solve technical problems, and to achieve a technical effect of the implementation process is described in detail. Example 1

Suppose a base station supporting multi-carrier aggregation has 4 carriers (denoted as CCl, CC2, CC3 and CC4). Assuming that the base station subordinate has no RRH and all four carriers are of the same band, according to the present invention, the base station can adopt the following The way to use 4 carriers.

The base station pairs the four carriers, and assumes that the pairing is two pairs, which are CC1 and CC2, CC3 and CC4, respectively. The base station sends the pairing relationship to the UE, for example, the system broadcast information of CC1 and CC3 is sent to the UE. In order to save resources, the base station does not configure PSS/SSS and/or CRS in CC2 and CC4, and then the base station transmits information of CCS and CC4 without configuring PSS/SSS and/or CRS to the UE through CC1 and CC3. Here, point-to-point transmission can be used to notify those UEs that are working or are working in CC2 and CC4. The UE then works in CC2 and CC4. The UE maintains synchronization with CC2 and CC4 using PSS/SSS and/or CRS in CC1 and CC3. Example 2 Suppose a base station supporting multi-carrier aggregation has 4 carriers (denoted as CC1, CC2, CC3, and CC4). It is assumed that the base station subordinate has no RRH, and CC1 and CC2 are in the same band, CC3 and CC4 are in the same band, where CC2 and CC4 are Carrier. Then, according to the present invention, the base station can use 4 carriers in the following manner.

The base station pairs 4 carriers, and assumes that the pairing is 2 pairs, which are CC1 and CC2, CC3 and CC4 respectively. The base station sends the pairing relationship to the UE, for example, the system broadcast information of CC1 and CC3 is sent to the UE. And the base station informs the CC2 and CC4 in the UE system that it is in the form of a carrier. Then, in order to save resources, the base station does not configure PSS/SSS and/or CRS in CC2 and CC4, and then the base station transmits information of CC2 and CC4 without PSS/SSS and/or CRS to the UE through CC1 and CC3. Here, point-to-point transmission can be used to notify UEs that are working or are working in CC2 and CC4. Here, the base station and the UE may also adopt a default manner, that is, when the base station and the UE learn that CC2 and CC4 in the system are carriers, and after receiving the carrier pairing relationship sent by the base station, it is known that CC1 and CC2, CC3 and CC4 are paired, and Determining the frequency of the paired carrier, it can be found that CC1 and CC2, CC3 and CC4 are respectively the same band, then the UE can default to not configure PSS/SSS and/or CRS in CC2 and CC4.

In addition, if the pairing relationship changes to CC1 and CC4, CC3 and CC2, then the base station and the UE determine that the frequency of the paired carrier is not located in the same band, then the base station needs to configure PSS/SSS and/or CRS in CC2 and CC4. The UE also knows according to the convention that CC2 and CC4 are carriers but have PSS/SSS and/or CRS configured therein.

In this embodiment, it may also be implemented by using signaling manner provided by the present invention. For example, after the base station pairs CC1 and CC2, CC3 and CC4 respectively, the base station informs the UE through system broadcast information of CC1 and CC3 or by point-to-point in CC1 and CC3, whether PSS is configured in CC2 and CC4. /SSS and/or CRS, although CC2 and CC4 are assumed to be carriers, the carrier may be configured with PSS/SSS and/or CRS in the present invention. Only in most cases download waves are not configured with PSS/SSS and/or CRS. For example, when the base station pairs CC1 and CC4, CC3 and CC2 respectively, the base station notifies the UE by means of system broadcast information of CC1 and CC3 or by point-to-point in CC1 and CC3 or adds new ones to CC1 and CC3. Pairing dedicated signaling to inform the UE whether PSS/SSS and/or CRS are configured in CC2 and CC4.

The configuration here has PSS/SSS and / or CRS can be understood as configured PSS / SSS and / or

The CRS is configured as specified in LTE R8/R9/R10. It can also be understood that configuring PSS/SSS and/or CRS means that a new PSS/SSS and/or CRS different from the LTE R8/R9/R10 protocol is designed, such as PSS/SSS and/or CRS and LTE R8. The resource location of /R9/R10 is different, or the sequence used by PSS/SSS and/or CRS is different. For the latter case, CC1 and CC3 are required to inform PSS/SSS and/or CRS of detailed resource location information in CC2 and CC4, or to agree on sequence set information. Example 3

Based on the second embodiment, it is further assumed that the base station in the embodiment 3 has an RRH. It is also assumed that CC1 and CC2 are carriers used by the base station and the RRH. as follows:

Suppose a base station supporting multi-carrier aggregation has 4 carriers (denoted as CCl, CC2, CC3, and CC4). It is assumed that the base station has one RRH, and CC1 and CC2 are in the same band, and CC3 and CC4 are in the same band, where CC2 and CC4 are located. Is the carrier. Further assume that CC1 and CC2 are both carriers used by the RRH for forwarding. This means that CC1 and CC2 work in RRH. Then, according to the present invention, the base station can use 4 carriers in the following manner.

The process of processing is only in pairing, and the base station will preferentially belong to the same band and experience the same transmission node carrier pairing. The remaining processing is similar to that in Embodiment 2, and will not be described again here. Example 4

In the foregoing embodiment, if the configuration of the PSS/SSS and/or the CRS in the paired carrier cannot meet the UE requirement for working in the carrier, the present invention can further adopt the same manner. The PBCH is configured in the carrier. That is, the base station configures the PBCH in the other carrier by using one of the paired carriers, for example, whether the presence or absence of the carrier can be configured (by default, the protocol specified in the LTE R8/R9/R10 protocol or agreed by the protocol), or the configured configuration can be notified. Resource location, period.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by instructions to the associated hardware, which may be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

claims

1. A carrier configuration method, wherein the method includes:

The base station determines the corresponding relationship between the carrier and its paired component carrier;

The base station configures the primary and secondary synchronization signals PSS/SSS and/or the cell-specific reference signal CRS in the carrier according to the corresponding relationship.

2. The carrier configuration method according to claim 1, wherein after the base station determines the corresponding relationship between the carrier and its paired component carrier, the method further includes:

The base station sends the corresponding relationship to the UE through point-to-multipoint system broadcast information or RRC signaling, or the base station sends the corresponding relationship to the UE through point-to-point RRC signaling or a dedicated control channel.

3. The carrier configuration method according to claim 1, wherein, after the base station determines the corresponding relationship between the carrier and the component carrier paired with it, the method further includes: the base station notifies the corresponding relationship to the carrier that will or is working on the carrier. UE.

4. The carrier configuration method according to claim 1, wherein the base station determines the corresponding relationship between the carrier and its paired component carrier as:

The base station preferentially selects component carriers in the same band for the carrier as its paired carrier.

5. The carrier configuration method according to claim 1, wherein the base station determines the corresponding relationship between the carrier and its paired component carrier as:

The base station preferentially configures the same transmission node for the carrier and its paired component carrier, or preferentially configures the component carrier with the same transmission node for the carrier.

6. The carrier configuration method according to claim 4, wherein the base station configures the PSS/SSS and/or CRS in the carrier according to the corresponding relationship as:

When the frequency point of the carrier and the paired component carrier are in the same band, the base station notifies and instructs the UE that there is no PSS/SSS and/or CRS configuration in the carrier;

When the frequency points of the carrier and the paired component carrier are in different bands, the base station notifies and instructs the UE, so Describe the PSS/SSS and/or CRS configuration in the carrier.

7. The carrier configuration method according to claim 6, wherein the configuration situation includes: time-frequency resources and/or periods and/or sequences of PSS/SSS configuration, and/or patterns and/or periods of CRS configuration and/or sequence.

8. The carrier configuration method according to claim 7, wherein the configuration further includes: whether the CRS and/or PSS/SSS in LTE R10 are configured in the carrier.

9. The carrier configuration method according to claim 1, wherein the method further includes: when the PSS/SSS in LTE R10 is configured in the carrier, the base station configures the resource location of the PSS/SSS to be the same as the PSS/SSS in LTE R10. The resource location of SSS is different, and/or, the sequence sent in configured PSS/SSS is different from the sequence sent in LTE R10, and/or, the configured sending cycle of PSS/SSS is different from the cycle of PSS/SSS in LTE R10.

10. The carrier configuration method according to claim 1, wherein the base station configures the PSS/SSS and/or CRS in the carrier according to the corresponding relationship as:

When the carrier and the paired component carrier arrive at the UE through the same transmission node, the base station notifies and instructs the UE that there is no PSS/SSS and/or CRS configuration in the carrier;

When the transmission nodes experienced by the carrier and the component carrier when arriving at the UE are not exactly the same, the base station notifies and instructs the UE of the PSS/SSS and/or CRS configuration in the carrier.

11. The carrier configuration method according to claim 1, wherein the configuration includes: time-frequency resources and/or periods and/or sequences of PSS/SSS configuration, and/or patterns and/or periods of CRS configuration. /or sequence.

12. The carrier configuration method according to claim 11, wherein the configuration further includes: whether the CRS and/or PSS/SSS in LTE R10 are configured in the carrier.

13. The carrier configuration method according to claim 1, wherein the method further includes: when the PSS/SSS in LTE R10 is configured in the carrier, the base station configures the resource location of the PSS/SSS with the resource location in LTE R10. The resource locations of PSS/SSS are different, and/or, configure PSS/SSS to send The sequence sent is different from the sequence sent in LTE R10.

14. The carrier configuration method according to claim 1, wherein, after the base station configures the PSS/SSS and/or CRS in the carrier according to the corresponding relationship, the method further includes: the base station notifies the configuration information UE, when the UE working in the carrier learns that the PSS/SSS and/or CRS are configured in the carrier, the UE uses the PSS/SSS and/or CRS in the carrier to synchronize with the carrier.

15. The carrier configuration method according to claim 1, wherein the base station configures the PSS/SSS and/or CRS in the carrier according to the corresponding relationship as:

The base station notifies the UE through the paired component carrier of the carrier whether the PSS/SSS and/or CRS in LTE R10 are configured in the carrier. When the UE learns that the PSS/SSS and/or CRS in LTE R10 are not configured in the carrier, or CRS, or when the UE learns that PSS/SSS and/or CRS are not configured in the carrier, the UE believes that the carrier is synchronized with its paired component carrier, and the UE believes that it is synchronized with the component carrier, that is, to achieve synchronization with the component carrier. Synchronization of the carrier; When the UE learns that the PSS/SSS and/or CRS of LTE R10 is configured in the carrier, or when the UE learns that the PSS/SSS and/or CRS is configured in the carrier, the UE considers that the carrier is The paired component carriers are asynchronous, and the UE uses the PSS/SSS and/or CRS in the carrier to achieve synchronization with the carrier.

16. The carrier configuration method according to claim 1, wherein the base station configures the PSS/SSS and/or CRS in the carrier according to the corresponding relationship as:

17. The carrier configuration method according to any one of claims 1 to 16, wherein when the base station configures the PSS/SSS and/or CRS in the carrier according to the corresponding relationship, the method further includes:

The base station notifies the system frame number and/or physical broadcast channel PBCH in the carrier through the component carrier The configuration of the PBCH refers to whether the PBCH is configured in the carrier, or the position and/or period of the PBCH configuration.

18. A carrier configuration system, wherein the system includes: a correspondence determination unit and a configuration unit; wherein,

The correspondence determination unit is configured to determine the correspondence between a carrier and its paired component carrier;

The configuration unit is configured to configure the PSS/SSS and/or CRS in the carrier according to the correspondence relationship determined by the correspondence relationship determination unit.

19. The carrier configuration system according to claim 18, wherein the system further includes a communication unit configured to send the corresponding relationship determined by the corresponding relationship determining unit to the system through point-to-multipoint system broadcast information or RRC signaling. UE, or, send the corresponding relationship to the UE through point-to-point RRC signaling or a dedicated control channel.

20. The carrier configuration system according to claim 19, wherein the communication unit is further configured to notify and instruct the UE that there is no PSS/SSS in the carrier when the frequency point of the carrier and the paired component carrier are in the same band. and/or CRS configuration; and when the frequency points of the carrier and the paired component carrier are in different bands, notify and instruct the UE of the PSS/SSS and/or CRS configuration in the carrier.

21. The carrier configuration system according to claim 18, wherein the configuration unit is further configured to configure the resource location of the PSS/SSS to be the same as the PSS in LTE R10 when the PSS/SSS in LTE R10 is configured in the carrier. The resource location of /SSS is different, and/or, the sequence sent in configured PSS/SSS is different from the sequence sent in LTE R10, and/or, the configured sending cycle of PSS/SSS is different from the cycle of PSS/SSS in LTER10.

11. The carrier configuration system according to claim 19, wherein the communication unit is further configured to notify and instruct the UE that when the carrier and the transmission node experienced by the paired component carrier in arriving at the UE are exactly the same, No PSS/SSS and/or CRS configuration; and when the transmission nodes experienced by the carrier and component carrier in reaching the UE are not exactly the same, notify and instruct the UE, so Describe the PSS/SSS and/or CRS configuration in the carrier.

23. The carrier configuration system according to claim 18, wherein the configuration unit is further configured to configure the resource location of the PSS/SSS to be the same as that in the LTE R10 when the PSS/SSS in the LTE R10 is configured in the carrier. The resource locations of the PSS/SSS are different, and/or, the sequence sent in the configured PSS/SSS is different from the sequence sent in LTE R10.

24. The carrier configuration system according to claim 19, wherein the communication unit is further configured to notify the UE of the configuration information after the configuration unit configures the PSS/SSS and/or CRS in the carrier.

25. The carrier configuration system according to any one of claims 18 to 24, wherein the communication unit is further configured to notify the system frame number and/or the configuration of the PBCH in the carrier through the component carrier, and the PBCH Configuration refers to whether a PBCH is configured in the carrier, or the location and/or period of the PBCH configuration.

26. A carrier configuration method, wherein the method includes:

The base station determines the synchronization component carrier of the carrier and sends the synchronization component carrier information of the carrier to the UE.

27. The carrier configuration method according to claim 26, wherein the sending the synchronization component carrier information of the carrier to the UE is:

The base station sends the synchronization component carrier information of the carrier to the UE through point-to-multipoint system broadcast information or RRC signaling, or the base station sends the synchronization component carrier information of the carrier through point-to-point RRC signaling or dedicated control. channel is sent to the UE.

28. The carrier configuration method according to claim 26, wherein the base station determines that the synchronization component carrier of carrier is:

The base station selects a component carrier in the same band for the carrier as its synchronization component carrier.

29. The carrier configuration method according to claim 26, wherein the synchronization component carrier information includes: whether the CRS and/or PSS/SSS in LTE R10 are configured in the carrier; or, and The carrier is a synchronized component carrier.

30. The carrier configuration method according to any one of claims 26 to 29, wherein,

The UE uses the PSS/SSS and/or CRS in the synchronization component carrier of the carrier to maintain synchronization with the synchronization component carrier, that is, to achieve synchronization with the carrier.

31. The carrier configuration method according to any one of claims 26 to 29, wherein the base station notifies the UE of the component carrier synchronized with the carrier, indicating that PSS/SSS and/or CRS are not configured in the carrier.

32. A carrier configuration method, wherein the method includes:

The UE receives the PSS/SSS and/or CRS configuration information of the carrier sent by the base station, or receives the synchronization component carrier information of the carrier sent by the base station;

The UE determines whether there is PSS/SSS and/or CRS transmission in the carrier according to the received information.

33. The carrier configuration method according to claim 32, wherein the UE receives the PSS/SSS and/or CRS configuration information of the carrier sent by the base station, or receives the synchronization component carrier information of the carrier sent by the base station, and the synchronization component carrier information is : The UE receives it through point-to-multipoint system broadcast information or RRC signaling, or the UE receives it through point-to-point RRC signaling or dedicated control channel.

34. The carrier configuration method according to claim 32, wherein the synchronized component carrier information includes: whether the CRS and/or PSS/SSS in LTE R10 are configured in the carrier; or, a component synchronized with the carrier carrier.

35. The carrier configuration method according to any one of claims 32 to 34, wherein the UE uses the PSS/SSS and/or CRS in the synchronization component carrier of the carrier to maintain synchronization with the synchronization component carrier, that is, with the synchronization component carrier. The carriers are synchronized.

36. The carrier configuration method according to any one of claims 32 to 34, wherein the method further includes: when the UE receives the synchronization component carrier information of the carrier notified by the base station, it determines that the PSS/SSS and SSS are not configured in the carrier. /or CRS.

37. The carrier configuration method according to any one of claims 32 to 34, wherein: The method further includes: when the UE learns that the carrier is not configured with a synchronization component carrier, it determines that the carrier is configured with PSS/SSS and/or CRS.