Supporting fragmented carrier aggregation
By using virtual carriers and RSSI measurements to determine minimal interference, the UE can share a single Rx chain for non-contiguous frequency blocks, overcoming CA limitations in fragmented carriers and enhancing throughput.
Patent Information
- Application Number
- PCT/CN2024/092049
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-11-13
AI Technical Summary
Carrier aggregation (CA) in fragmented carriers is limited by the need for multiple reception (Rx) chains due to intervening frequency blocks, which are not owned by the operator, leading to reduced CA capabilities in user equipment (UE).
The UE determines whether a single Rx chain can be used for receiving signals on fragmented frequency blocks by measuring virtual carriers associated with intervening frequency blocks, using Received Signal Strength Indicator (RSSI) measurements and event triggers, to share an Rx chain when interference is minimal.
This approach reduces the number of Rx chains required, enhancing CA capabilities by allowing a single Rx chain to handle non-contiguous frequency blocks without significant interference, thereby improving throughput.
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Figure CN2024092049_13112025_PF_FP_ABST
Abstract
Description
Supporting Fragmented Carrier AggregationTechnical Field
[0001] The present disclosure generally relates to wireless communication, and in particular, to supporting fragmented carrier aggregation.Background
[0002] A user equipment (UE) may be configured with a carrier aggregation (CA) capability where the UE is configured with a primary cell (PCell) and one or secondary cells (SCells) to increase throughput between the UE and the network. However, in some instances, frequency bands may be fragmented where an operator of a Public Land Mobile Network (PLMN) does not own the rights to transmit on all contiguous frequencies of a frequency band, e.g., there are intervening frequency blocks between frequency blocks on which the operator is allowed to operate in a given frequency band. This may be referred to as a fragmented carrier. When CA is implemented in a fragmented carrier, the UE has to use a separate reception (Rx) chain for each frequency block of the fragmented carrier. This consumes multiple Rx chains and limits the CA capabilities of the UE.Summary
[0003] Some example embodiments are related to an apparatus having processing circuitry configured to process, based on signals received from a network, a configuration comprising a measurement object (MO) related to a single reception (Rx) chain being used to receive signals for a first component carrier (CC) and a second CC of a carrier aggregation (CA) capability, wherein the first CC and second CC occupy frequency blocks separated by an intervening frequency block, wherein the MO comprises information for one or more virtual carriers associated with the intervening frequency block and generate, for transmission to the network, measurement results for the MO.
[0004] Other example embodiments are related to an apparatus having processing circuitry configured to generate, for transmis sion to a user equipment (UE) , a configuration for a measurement object (MO) related to a single reception (Rx) chain of the UE being used to receive signals for a first component carrier (CC) and a second CC of a carrier aggregation (CA) capability, wherein the first CC and second CC occupy frequency blocks separated by an intervening frequency block, wherein the MO comprises information for one or more virtual carriers associated with the intervening frequency block and process, based on signals received from the UE, measurement results of the MO.Brief Description of the Drawings
[0005] Fig. 1 shows an example network arrangement according to various example embodiments.
[0006] Fig. 2 shows an example user equipment (UE) according to various example embodiments.
[0007] Fig. 3 shows an example base station according to various example embodiments.
[0008] Fig. 4 shows an example of a fragmented carrier according to various example embodiments.
[0009] Fig. 5 shows an example of a fragmented carrier where a UE may use a single Reception (Rx) chain to receive signals on fragmented frequency blocks in a CA scenario according to various example embodiments.
[0010] Fig. 6 shows a diagram illustrating two non-contiguous frequency blocks on which a UE may receive signals using a single Rx chain according to various example embodiments.
[0011] Fig. 7 shows an example event 700 to trigger a UE to use a single Rx chain to receive two non-contiguous frequency blocks during CA operation according to various example embodiments.
[0012] Fig. 8 shows an example method for a UE to determine whether to use a single Rx chain to receive two non-contiguous frequency blocks during CA operation according to various example embodiments.
[0013] Fig. 9 shows an example method for a UE to report interference information related to a single Rx chain being used by the UE to receive two non-contiguous frequency blocks during CA operation according to various example embodimentsDetailed Description
[0014] The example embodiments may be further understood with reference to the following description and the related appended drawings, wherein like elements are provided with the same reference numerals. The example embodiments relate to operations for a UE to determine that a single Rx chain may be used for reception of signals on fragmented frequency blocks in a carrier aggregation scenario.
[0015] The example embodiments are described with regard to a user equipment (UE) . However, reference to a UE is merely provided for illustrative purposes. The example embodiments may be utilized with any electronic component that may establish a connection to a network and is configured with the hardware, software, and / or firmware to exchange information and data with the network using a carrier aggregation capability. Therefore, the UE as described herein is used to represent any appropriate electronic component.
[0016] The example embodiments are also described with regard to a 5G New Radio (NR) network. However, reference to a 5G NR network is merely provided for illustrative purposes. The example embodiments may be utilized with any network that may establish a connection to a UE and exchange information and data with the UE using a carrier aggregation capability (e.g., 5G-Advanced networks, 6G networks, etc. ) .
[0017] The example embodiments are also described with reference to carrier aggregation (CA) . In CA, a UE may communicate in the downlink (DL) or uplink (UL) with multiple cells of a network to increase throughput. CA includes the UE associating with a Primary Cell (PCell) and one or more Secondary Cells (SCells) . Different band combinations of CA may be served by the PCell and SCell, e.g., the PCell may serve a first component carrier (CC) of a CA band combination (e.g., CC1) to the UE and the SCell may serve a second CC of the CA band combination (e.g., CC2) to the UE. Thus, in CA, both the PCell and the SCell are considered to be serving cells. CA mode may include multiple SCells. Configured SCells may be activated and deactivated as needed depending on the traffic between the UE and the network. In some example embodiments, it may be considered that the PCell and SCell (s) are co-located, e.g., in the same general physical location (e.g., on the same cell tower) . The PCell and the SCells may be cells of different gNBs or a single gNB.
[0018] Some example embodiments are related to a scenario where fragmented CCs are served to a UE. The fragmented CCs comprise CCs that are served on non-contiguous frequency blocks. The example embodiments provide various operations for a UE to be configured with information to determine whether the UE may use a single Rx chain to receive signals on the fragmented CCs. The example embodiments further comprise operations for the UE to perform the determination and report events related to the determination to the network to allow the network to configure and / or activate SCells on the fragmented CCs, as needed. These and other example embodiments are described in greater detail below.
[0019] Fig. 1 shows an example network arrangement 100 according to various example embodiments. The example network arrangement 100 includes a UE 110. The UE 110 may be any type of electronic component that is configured to communicate via a network, e.g., mobile phones, tablet computers, desktop computers, smartphones, phablets, embedded devices, wearables, Internet of Things (IoT) devices, etc. An actual network arrangement may include any number of UEs being used by any number of users. Thus, the example of a single UE 110 is merely provided for illustrative purposes.
[0020] The UE 110 may be configured to communicate with one or more networks. In the example of the network arrangement 100, the network with which the UE 110 may wirelessly communicate is a 5G NR radio access network (RAN) 120. However, the UE 110 may also communicate with other types of networks (e.g., 5G cloud RAN, a next generation RAN (NG-RAN) , a long term evolution RAN, a legacy cellular network, a WLAN, etc. ) and the UE 110 may also communicate with networks over a wired connection. With regard to the example embodiments, the UE 110 may establish a connection with the 5G NR RAN 120. Therefore, the UE 110 may have a 5G NR chipset to communicate with the NR RAN 120.
[0021] The 5G NR RAN 120 may be a portion of a public land mobile network (PLMN) that may be deployed by a network carrier (e.g., Verizon, AT&T, T-Mobile, etc. ) . The 5G NR RAN 120 may include, for example, cells or base stations (Node Bs, eNodeBs, HeNBs, eNBS, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) that are configured to send and receive traffic from UEs that are equipped with the appropriate cellular chip set. The gNB 120A may include one or more communication interfaces to exchange data and / or information with the UE 110, the corresponding 5G NR RAN 120, the cellular core network 130, the internet 140, etc.
[0022] The UE 110 may connect to the 5G NR-RAN 120 via the gNB 120A. Any association procedure may be performed for the UE 110 to connect to the 5G NR-RAN 120. For example, as discussed above, the 5G NR-RAN 120 may be associated with a particular cellular provider where the UE 110 and / or the user thereof has a contract and credential information (e.g., stored on a SIM card) . Upon detecting the presence of the 5G NR-RAN 120, the UE 110 may transmit the corresponding credential information to associate with the 5G NR-RAN 120. More specifically, the UE 110 may associate with a specific cell (e.g., the gNB 120A) . However, as mentioned above, reference to the 5G NR-RAN 120 is merely for illustrative purposes and any appropriate type of RAN may be used.
[0023] In addition to the 5G NR RAN 120, the network arrangement 100 also includes a cellular core network 130, the Internet 140, an IP Multimedia Subsystem (IMS) 150, and a network services backbone 160. The cellular core network 130 may be considered to be the interconnected set of components that manages the operation and traffic of the cellular network. The cellular core network 130 also manages the traffic that flows between the cellular network and the Internet 140.
[0024] The IMS 150 may be generally described as an architecture for delivering multimedia services to the UE 110 using the IP protocol. The IMS 150 may communicate with the cellular core network 130 and the Internet 140 to provide the multimedia services to the UE 110. The network services backbone 160 is in communication either directly or indirectly with the Internet 140 and the cellular core network 130. The network services backbone 160 may be generally described as a set of components (e.g., servers, network storage arrangements, etc. ) that implement a suite of services that may be used to extend the functionalities of the UE 110 in communication with the various networks.
[0025] Fig. 2 shows an example UE 110 according to various example embodiments. The UE 110 will be described with regard to the network arrangement 100 of Fig. 1. The UE 110 may include a processor 205, a memory arrangement 210, a display device 215, an input / output (I / O) device 220, a transceiver 225 and other components 230. The other components 230 may include, for example, an audio input device, an audio output device, a power supply, a data acquisition device, ports to electrically connect the UE 110 to other electronic devices, etc.
[0026] The processor 205 may be configured to execute a plurality of engines of the UE 110. For example, the engines may include a CA engine 235. The CA engine 235 may perform various operations related to a CA capability of the UE 110. For example, the CA engine 235 may perform operations such as, but not limited to, reporting CA capabilities to the network, receiving measurement objects (MOs) and events related to fragmented CA CCs, performing measurements related to MOs and events and reporting event triggers to the network based on the measurement results. These and other operations are described in greater detail below.
[0027] The above re ferenced engine 235 being an application (e.g., a program) executed by the proces sor 205 is merely provided for illustrative purposes. The functionality associated with the engine 235 may also be represented as a separate incorporated component of the UE 110 or may be a modular component coupled to the UE 110, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. The engine may also be embodied as one application or separate applications. In addition, in some UEs, the functionality described for the processor 205 is split among two or more processors such as a baseband processor and an applications processor. The example embodiments may be implemented in any of these or other configurations of a UE.
[0028] The memory arrangement 210 may be a hardware component configured to store data related to operations performed by the UE 110. The display device 215 may be a hardware component configured to show data to a user while the I / O device 220 may be a hardware component that enables the user to enter inputs. The display device 215 and the I / O device 220 may be separate components or integrated together such as a touchscreen.
[0029] The transceiver 225 may be a hardware component configured to establish a connection with the 5G NR-RAN 120, an LTE-RAN (not pictured) , a legacy RAN (not pictured) , a WLAN (not pictured) , etc. Accordingly, the transceiver 225 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 225 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 205 may be operably coupled to the transceiver 225 and configured to receive from and / or transmit signals to the transceiver 225. The processor 205 may be configured to encode and / or decode signals (e.g., signaling from a base station of a network) for implementing any one of the methods described herein.
[0030] Fig. 3 shows an example base station 300 according to various example embodiments. The base station 300 may represent the gNB 120A or any other type of access node through which the UE 110 may establish a connection and manage network operations.
[0031] The base station 300 may include a processor 305, a memory arrangement 310, an input / output (I / O) device 315, a transceiver 320, and other components 325. The other components 325 may include, for example, an audio input device, an audio output device, a battery, a data acquisition device, ports to electrically connect the base station 300 to other electronic devices and / or power sources, TxRUs, transceiver chains, antenna elements, antenna panels, etc.
[0032] The processor 305 may be configured to execute a plurality of engines for the base station 300. For example, the engines may include a CA configuration engine 330. The CA configuration engine 330 may perform various operations related to configuring a UE for CA operations. For example, the CA configuration engine 330 may perform operations such as, but not limited to, receiving UE CA capability reports, configuring the UE with measurement objects (MOs) and events related to fragmented CA CCs, receiving event triggers from the UE based on the measurement results and configuring / activating CCs based on the event triggers. These and other operations are described in greater detail below.
[0033] The above noted engine 330 being an application (e.g., a program) executed by the processor 305 is only an example. The functionality associated with the engine 330 may also be represented as a separate incorporated component of the base station 300 or may be a modular component coupled to the base station 300, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. In addition, in some base stations, the functionality described for the processor 305 is split among a plurality of processors (e.g., a baseband processor, an applications processor, etc. ) . The example embodiments may be implemented in any of these or other configurations of a base station.
[0034] The memory arrangement 310 may be a hardware component configured to store data related to operations performed by the base station 300. The I / O device 315 may be a hardware component or ports that enable a user to interact with the base station 300.
[0035] The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UEs in the network arrangement 100. The transceiver 320 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . Therefore, the transceiver 320 may include one or more components to enable the data exchange with the various networks and UEs. The transceiver 320 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 305 may be operably coupled to the transceiver 320 and configured to receive from and / or transmit signals to the transceiver 320. The processor 305 may be configured to encode and / or decode signals (e.g., signaling from a UE) for implementing any one of the methods described herein.
[0036] Fig. 4 shows an example of a fragmented carrier 400 according to various example embodiments. The fragmented carrier 400 may be, for example, for a particular frequency band in NR Frequency Range 1 (FR1) such as any of frequency bands n1 to n109. The use of NR frequency bands is only an example and the example embodiments may be used in any CA fragmented carrier scenario.
[0037] In the example of Fig. 4, it may be considered that a first operator of a PLMN has the rights to operate in the frequency blocks labeled as 1 in the example frequency band, e.g., Block 1-1 410, Block 1-2 430 and Block 1-3 450. As shown in Fig. 4, these frequency blocks 410, 430 and 450 are not contiguous, there are intervening blocks Block 2-1 420 and Block 2-2 440 that separate the different blocks of the first operator. These intervening blocks 420 and 440 may be controlled by one or more PLMN operators that are not the first operator. The example of using three non-contiguous frequency blocks is only an example and the example embodiments may be implemented for any number of fragmented blocks in a CA configuration. In addition, the example of Fig. 4 shows each of the blocks 410-450 having approximately the same size in terms of frequency. This is only an example and each of the blocks may have different sizes in terms of frequency.
[0038] Thus, if the network of the first operator is configuring a UE to operate in CA using the fragmented frequency band 400, the UE may be configured as follows: PCell operating on Block 1-1 410, SCell1 operating on Block 1-2 430 and SCell2 operating on Block 1-3 450. The number of blocks typically determines the number of Rx chains for a single layer implementation. Thus, in this example, assuming that all three of the CCs are currently activated, the UE would need 3 Rx chains to implement the CA configuration described above. The reason is that a strong blocker may exist between the blocks belonging to a single operator. Further, if the number of layers increases, e.g., 2 layer Multiple Input / Multiple Output (MIMO) , the number of Rx chains needed will be doubled. Thus, the fragmented carrier 400 limits the UE capabilities with respect to CA because of the number of Rx chains that may be required for CA operation.
[0039] The example embodiments introduce operations that may be used to reduce the number of Rx chains that may have to be used by the UE in the CA fragmented carrier scenario. Specifically, the operations are related to determining if there are strong interferences between fragmented frequency blocks being used for CA and when there is not strong interferences, a single Rx chain may be shared among multiple fragmented frequency blocks.
[0040] Fig. 5 shows an example of a fragmented carrier 500 where a UE may use a single Rx chain to receive signals on fragmented frequency blocks in a CA scenario according to various example embodiments. The fragmented carrier 500 is similar to the fragmented carrier 400 of Fig. 4 in that Block 1-1 510, Block 1-2 530 and Block 1-3 550 are controlled by a first operator and these blocks 510, 530 and 550 are separated by intervening blocks Block 2-1 520 and Block 2-2 540, respectively, that are controlled by different operator (s) .
[0041] In the example of Fig. 5, a UE 560 that is configured with CA operating on the blocks 510, 530 and 550 may use only 2 Rx chains 570 and 580 rather than 3 Rx chains for the fragmented frequency blocks. In this example, the UE 560 may have a CA configuration as follows: PCell operating on Block 1-1 510, SCell1 operating on Block 1-2 530 and SCell2 operating on Block 1-3 550. In this example, the UE 560 may use the Rx chain 1 570 to receive signals transmitted on both the Block 1-1 510 and the Block 1-2 530. The UE 560 may use a separate Rx chain 2 580 to receive signals transmitted on the Block 1-3 550. As described above, this example is for a single layer transmission. If the transmissions were for more layers within the frequency blocks, the Rx chains 570 and 580 may be Rx chain sets, e.g., for 2 layer MIMO, the Rx chain 570 set may include a first and second Rx chain.
[0042] In this example, the Block 1-1 510 and the Block 1-2 530 may be co-located. The blocks may be considered to be co-located when the cells that transmit on these blocks (e.g., the PCell and SCell1 in this example) , are in the same general physical location (e.g., on the same cell tower / site) . The cells may be cells of different gNBs or a single gNB.
[0043] When non-contiguous frequency cells are co-located, it is possible that there is no strong interference from signals using the intervening block (s) , e.g., Block 2-1 520 in the present example. When the UE 560 determines that there is no strong interference from the Block 2-1 520, the UE 560 may determine that a same Rx chain 570 may be used to receive signals in the Block 1-1 510 and the Block 1-2 530. The following will provide examples of how the UE 560 may make the determination that no strong interference from the Block 2-1 520 exists.
[0044] To support the UE 560 in making the decision, the network may introduce a new event trigger for the UE 560 to indicate to the network whether strong interference exists between the blocks to be received by the same Rx chain. For example, the new event trigger may be included in response to a UE capability report provided by the UE. The information included in the event may include a carrier center frequency and carrier bandwidth to be measured in another operator’s spectrum range, e.g., the Block 2-1 520, along with one or more thresholds for determining whether the intervening block is a strong interferer. In some examples, an existing Synchronization Signal Block (SSB) based measurement of the Block 2-1 520 may be used to provide the center frequency to the UE 560. The carrier may be treated as a virtual carrier that assists the UE Received Signal Strength Indicator (RSSI) measurement and event trigger evaluation. An example of this event is provided below with reference to Figs. 6 and 7.
[0045] Fig. 6 shows a diagram illustrating two non-contiguous frequency blocks on which a UE may receive signals using a single Rx chain according to various example embodiments. Fig. 6 shows the two non-contiguous frequency blocks, Block 1-1 510 and Block 1-2, separated by the intervening Block 2-1 520. As described above, the event configuration may include a carrier center frequency and carrier bandwidth for the UE 560 to measure the RSSI of signals being transmitted on the Block 2-1 520 to determine whether the signals being transmitted on the Block 2-1 520 are strong interferers with signals being transmitted on Block 1-1 510 and Block 1-2.
[0046] In the example of Fig. 6, three virtual carriers (VC) VC-1 522, VC-2 524 and VC-3 526 may be defined for the Block 2-1 520, e.g., based on a size of the Block 2-1 520 and a size of the interferer carrier. For example, the size of the interferer carrier may be defined as 5MHz with a di fferent carrier center offset from a channel edge. In the example of Fig. 6, each interferer carrier has a defined center frequency (CF) , e.g., VC-1 522 has CF 523, VC-2 524 has CF 525 and VC-3 526 has CF 527. The CF of each of these interferer carriers may be offset from the channel edge of the Block 2-1 520 to cover some or all of the frequency range of the Block 2-1 520. Using three VCs and a frequency range of 5MHz per VC is only an example and other numbers of VCs and / or frequency ranges for the VCs may be used.
[0047] The UE 560 may then measure the RSSI for the set of virtual carriers VC-1 522, VC-2 524 and VC-3 526. If interference free thresholds are satisfied for the virtual carriers VC-1 522, VC-2 524 and VC-3 526, then the UE 560 may use the single Rx chain 1 570 to receive the signals transmitted on the Block 1-1 510 and the Block 1-2 530.
[0048] Fig. 7 shows an example event 700 to trigger a UE to use a single Rx chain to receive two non-contiguous frequency blocks during CA operation according to various example embodiments. The example event 700 may be the example configuration for the scenario illustrated in Fig. 6.
[0049] As shown in Fig. 7, the event includes information for each of the VCs, VC-1 522, VC-2 524 and VC-3 526. This information includes the carrier center frequency, the carrier bandwidth and the interference free threshold. The carrier center frequency and the carrier bandwidth (e.g., 5 MHz) were described in detail above. The interference free threshold is a threshold that indicates to the UE 560 whether there is a strong interferer associated with the VC. In the examples described above, the measurement value is RSSI. Thus, the interference free threshold may be an RSSI value below which the VC is considered to be interference free. However, the use of RSSI is only an example and other channel quality measurements may be used and an appropriate threshold may be set based on the channel quality measurements.
[0050] Fig. 8 shows an example method 800 for a UE to determine whether to use a single Rx chain to receive two non-contiguous frequency blocks during CA operation according to various example embodiments. The method 800 is described from the point of view of the UE.
[0051] In 810, as part of the UE capability reporting to the network, the UE may report a radio frequency (RF) capability (e.g., the number of Rx chains) and a maximum RF bandwidth that a single RF chain may support. In 820, the UE may receive a configuration of measurement objects (MO) and events from the network. The MO and events may be configured by the network based on the UE capability report and a spectrum scenario (e.g., the supported CA band combinations) . The MO indicates the virtual carriers to be measured between the spectrum blocks, and as described above, may include the center frequency, channel bandwidth and the interference free threshold.
[0052] In 830, the UE performs the measurements associated with the MOs. For example, the UE may perform RSSI measurements for each of the configured virtual carriers. In 840, the UE may compare the measurement results (e.g., the RSSI for each virtual carrier) to the interference free threshold for the virtual carrier in the MO. For example, a first event may be if the interference free thresholds are met for all virtual carriers.
[0053] If the measurement results do not meet the event thresholds, the method may loop back and continue to periodically perform the measurements for the MO (830) and evaluate the one or more events based on the measurement results (840) . If the measurement results satisfy the event triggers, in 850, the UE will report the one or more events that are satisfied to the network.
[0054] In response to receiving the event report, the network may configure / activate the carriers on another block which is non-contiguous to the block containing the serving cell depending on the service demand of the UE. In 860, the UE will receive this configuration / activation from the network and operate accordingly.
[0055] A second event may be if the interference free thresholds are not met for at least one virtual carrier. If the UE is currently using a single Rx chain for reception of non-contiguous carriers, the receipt of the second event may cause the network to deactivate one of the carriers because the event may indicate that there is now a strong interferer operating on the intervening frequency block.
[0056] Fig. 9 shows an example method 900 for a UE to report interference information related to a single Rx chain being used by the UE to receive two non-contiguous frequency blocks during CA operation according to various example embodiments. The method 900 is described from the point of view of the UE.
[0057] In 910, as part of the UE capability reporting to the network, the UE may report a radio frequency (RF) capability (e.g., the number of Rx chains) and a maximum RF bandwidth that a single RF chain may support. In 920, the UE may receive a configuration of measurement objects (MO) from the network. The MO may be configured by the network based on the UE capability report and a spectrum scenario (e.g., the supported CA band combinations) . The MO indicates the virtual carriers to be measured between the spectrum blocks, and as described above, may include the center frequency, channel bandwidth and the interference free threshold.
[0058] In 930, the UE performs the measurements associated with the MOs. For example, the UE may perform RSSI measurements for each of the configured virtual carriers. In 940, the UE may report the measurement results for the MOs to the network.
[0059] Thus, in the example of Fig. 9, the UE is not configured with events as in Fig. 8. Rather, the UE may report the measurement results without comparing the measurement results to an event. In this example, the MO may include a configuration that indicates to the UE when measurement results are to be reported. In other examples, the network may trigger the UE to perform the MOs and send the measurement results in a separate signaling from the MO configuration.
[0060] In this example, the network may determine whether to configure / activate / de-activate the carriers on another block that is non-contiguous to the block containing the serving cell depending on the service demand of this UE and the measurement results for the MO. I f the network determines to configure / activate / de-activate the carriers, the network may send the appropriate signaling to the UE to perform the associated operation.
[0061] Examples
[0062] In a first example, a method comprising processing, based on signals received from a network, a configuration comprising a measurement object (MO) related to a single reception (Rx) chain being used to receive signals for a first component carrier (CC) and a second CC of a carrier aggregation (CA) capability, wherein the first CC and second CC occupy frequency blocks separated by an intervening frequency block, wherein the MO comprises information for one or more virtual carriers associated with the intervening frequency block and generating, for transmission to the network, measurement results for the MO.
[0063] In a second example, the method of the first example, wherein the information comprises a carrier center frequency, a carrier bandwidth and an interference free threshold for each of the one or more virtual carriers.
[0064] In a third example, the method of the second example, wherein the configuration further comprises an event related to the single Rx chain being used to receive signals for the first CC and second CC of the CA capability, the method further comprising determining that an event trigger has been satisfied based on measurement results of the MO, wherein the measurement results are transmitted to the network based on the event trigger being satisfied.
[0065] In a fourth example, the method of the third example, wherein the processing circuitry determines the event trigger has been satisfied based on the interference free threshold for each of the one or more virtual carriers.
[0066] In a fifth example, the method of the fourth example, wherein the event trigger comprises the interference free thresholds are satisfied for all of the one or more virtual carriers.
[0067] In a sixth example, the method of the fifth example, wherein the first CC is an active CC, further comprising processing, based on signals received from the network in response to the measurement results, an indication to activate the second CC, wherein the first CC and second CC are to be received using the single Rx chain.
[0068] In a seventh example, the method of the fourth example, wherein the event trigger comprises the interference free threshold of one of the one or more virtual carriers is not satisfied.
[0069] In an eighth example, the method of the seventh example, wherein the first CC and second CC are active CCs being received using the single Rx chain, the method further comprising processing, based on signals received from the network in response to the measurement results, an indication to deactivate the second CC.
[0070] In a ninth example, the method of the first example, wherein the information further comprises a center offset for each of the one or more virtual carriers from a channel edge of the intervening frequency block.
[0071] In a tenth example, the method of the first example, further comprising generating, for transmission to the network, a user equipment (UE) capability report comprising a number of supported Rx chains and a maximum radio frequency (RF) bandwidth supported by each of the Rx chains.
[0072] In an eleventh example, the method of the first example, wherein the measurement results comprise a Received Signal Strength Indicator (RSSI) for signals transmitted in the intervening block.
[0073] In a twelfth example, the method of the first example, further comprising reporting the measurement results based on signals received from the network.
[0074] In a thirteenth example, a processor configured to perform any of the methods of the first through twelfth examples.
[0075] In a fourteenth example, a user equipment (UE) comprising a transceiver configured to communicate with a network and a processor communicatively coupled to the transceiver and configured to perform any of the methods of the first through twelfth examples.
[0076] In a fifteenth example, a method comprising generating, for transmission to a user equipment (UE) , a configuration for a measurement object (MO) related to a single reception (Rx) chain of the UE being used to receive signals for a first component carrier (CC) and a second CC of a carrier aggregation (CA) capability, wherein the first CC and second CC occupy frequency blocks separated by an intervening frequency block, wherein the MO comprises information for one or more virtual carriers associated with the intervening frequency block and processing, based on signals received from the UE, measurement results of the MO.
[0077] In a sixteenth example, the method of the fifteenth example, wherein the information comprises a carrier center frequency, a carrier bandwidth and an interference free threshold for each of the one or more virtual carriers.
[0078] In a seventeenth example, the method of the sixteenth example, wherein the configuration further comprises an event related to the single Rx chain being used to receive signals for the first CC and second CC of the CA capability, wherein the measurement results are transmitted by the UE when an event trigger of the event is satisfied.
[0079] In an eighteenth example, the method of the seventeenth example, wherein the event trigger comprises the interference free thresholds are satisfied for all of the one or more virtual carriers.
[0080] In a nineteenth example, the method of the eighteenth example, wherein the first CC is an active CC, further comprising generating, for transmission to the UE in response to the measurement results, an indication to activate the second CC, wherein the first CC and second CC are to be received using the single Rx chain.
[0081] In a twentieth example, the method of the seventeenth example, wherein the event trigger comprises the interference free threshold of one of the one or more virtual carriers is not satisfied, and wherein the first CC and second CC are active CCs being received using the single Rx chain, the method further comprising generating, for transmission to the UE, an indication to deactivate the second CC.
[0082] In a twenty first example, the method of the fifteenth example, wherein the information further comprises a center offset for each of the one or more virtual carriers from a channel edge of the intervening frequency block.
[0083] In a twenty second example, the method of the fifteenth example, further comprising processing, based on signals received from the UE, a UE capability report comprising a number of supported Rx chains and a maximum radio frequency (RF) bandwidth supported by each of the Rx chains.
[0084] In a twenty third example, a processor configured to perform any of the methods of the fifteenth through twenty second examples.
[0085] In a twenty fourth example, a base station comprising a transceiver configured to communicate with a user equipment (UE) and a processor communicatively coupled to the transceiver and configured to perform any of the methods of the fifteenth through twenty second examples.
[0086] Those skilled in the art will understand that the above-described example embodiments may be implemented in any suitable software or hardware configuration or combination thereof. An example hardware platform for implementing the example embodiments may include, for example, an Intel x86 based platform with compatible operating system, a Windows OS, a Mac platform and MAC OS, a mobile device having an operating system such as iOS, Android, etc. The example embodiments of the above described method may be embodied as a program containing lines of code stored on a non-transitory computer readable storage medium that, when compiled, may be executed on a processor or microprocessor.
[0087] Although this application described various embodiments each having different features in various combinations, those skilled in the art will understand that any of the features of one embodiment may be combined with the features of the other embodiments in any manner not specifically disclaimed or which is not functionally or logically inconsistent with the operation of the device or the stated functions of the disclosed embodiments.
[0088] It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.
[0089] It will be apparent to those skilled in the art that various modifications may be made in the present disclosure, without departing from the spirit or the scope of the disclosure. Thus, it is intended that the present disclosure cover modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalent.
Claims
1.An apparatus comprising processing circuitry configured to:process, based on signals received from a network, a configuration comprising a measurement object (MO) related to a single reception (Rx) chain being used to receive signals for a first component carrier (CC) and a second CC of a carrier aggregation (CA) capability, wherein the first CC and second CC occupy frequency blocks separated by an intervening frequency block, wherein the MO comprises information for one or more virtual carriers associated with the intervening frequency block; andgenerate, for transmission to the network, measurement results for the MO.2.The apparatus of claim 1, wherein the information comprises a carrier center frequency, a carrier bandwidth and an interference free threshold for each of the one or more virtual carriers.3.The apparatus of claim 2, wherein the configuration further comprises an event related to the single Rx chain being used to receive signals for the first CC and second CC of the CA capability, wherein the processing circuitry is further configured to:determine that an event trigger has been satisfied based on measurement results of the MO, wherein the measurement results are transmitted to the network based on the event trigger being satisfied.4.The apparatus of claim 3, wherein the processing circuitry determines the event trigger has been satisfied based on the interference free threshold for each of the one or more virtual carriers.5.The apparatus of claim 4, wherein the event trigger comprises the interference free thresholds are satisfied for all of the one or more virtual carriers.6.The apparatus of claim 5, wherein the first CC is an active CC, and the processing circuitry is further configured to:process, based on signals received from the network in response to the measurement results, an indication to activate the second CC, wherein the first CC and second CC are to be received using the single Rx chain.7.The apparatus of claim 4, wherein the event trigger comprises the interference free threshold of one of the one or more virtual carriers is not satisfied.8.The apparatus of claim 7, wherein the first CC and second CC are active CCs being received using the single Rx chain, and the processing circuitry is further configured to:process, based on signals received from the network in response to the measurement results, an indication to deactivate the second CC.9.The apparatus of claim 1, wherein the information further comprises a center offset for each of the one or more virtual carriers from a channel edge of the intervening frequency block.10.The apparatus of claim 1, wherein the processing circuitry is further configured to:generate, for transmission to the network, a user equipment (UE) capability report comprising a number of supported Rx chains and a maximum radio frequency (RF) bandwidth supported by each of the Rx chains.11.The apparatus of claim 1, wherein the measurement results comprise a Received Signal Strength Indicator (RSSI) for signals transmitted in the intervening block.12.The apparatus of claim 1, wherein the processing circuitry is further configured to:report the measurement results based on signals received from the network.13.An apparatus comprising processing circuitry configured to:generate, for transmission to a user equipment (UE) , a configuration for a measurement object (MO) related to a single reception (Rx) chain of the UE being used to receive signals for a first component carrier (CC) and a second CC of a carrier aggregation (CA) capability, wherein the first CC and second CC occupy frequency blocks separated by an intervening frequency block, wherein the MO comprises information for one or more virtual carriers associated with the intervening frequency block; andprocess, based on signals received from the UE, measurement results of the MO.14.The apparatus of claim 13, wherein the information comprises a carrier center frequency, a carrier bandwidth and an interference free threshold for each of the one or more virtual carriers.15.The apparatus of claim 14, wherein the configuration further comprises an event related to the single Rx chain being used to receive signals for the first CC and second CC of the CA capability, wherein the measurement results are transmitted by the UE when an event trigger of the event is satisfied.16.The apparatus of claim 15, wherein the event trigger comprises the interference free thresholds are satisfied for all of the one or more virtual carriers.17.The apparatus of claim 16, wherein the first CC is an active CC, and the processing circuitry is further configured to:generate, for transmission to the UE in response to the measurement results, an indication to activate the second CC, wherein the first CC and second CC are to be received using the single Rx chain.18.The apparatus of claim 15, wherein the event trigger comprises the interference free threshold of one of the one or more virtual carriers is not satisfied, and wherein the first CC and second CC are active CCs being received using the single Rx chain, the processing circuitry is further configured to:generate, for transmission to the UE, an indication to deactivate the second CC.19.The apparatus of claim 13, wherein the information further comprises a center offset for each of the one or more virtual carriers from a channel edge of the intervening frequency block.20.The apparatus of claim 13, wherein the processing circuitry is further configured to:process, based on signals received from the UE, a UE capability report comprising a number of supported Rx chains and a maximum radio frequency (RF) bandwidth supported by each of the Rx chains.
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