FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for a multi transmit/receive point (TRP) make before break (MBB) handover.

BACKGROUND

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

A wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A user equipment (UE) may communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an access point (AP), a radio head, a transmit/receive point (TRP), a New Radio (NR) BS, a 5G Node B, and/or the like.

The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate on a municipal, national, regional, and even global level. New Radio (NR), which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, there exists a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies.

SUMMARY

In some aspects, a method of wireless communication, performed by a user equipment (UE), may include determining whether a capability of the UE is sufficient for a make-before-break (MBB) handover from a source set of cells to a target set of cells, wherein the source set of cells is provided by a first set of transmit/receive points (TRPs) and the target set of cells is provided by a second set of TRPs; and selectively performing the MBB handover using a first capability configuration for the MBB handover or a second capability configuration for the MBB handover based at least in part on whether the capability of the UE is sufficient for the MBB handover.

In some aspects, a UE for wireless communication may include memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine whether a capability of the UE is sufficient for an MBB handover from a source set of cells to a target set of cells, wherein the source set of cells is provided by a first set of TRPs and the target set of cells is provided by a second set of TRPs; and selectively perform the MBB handover using a first capability configuration for the MBB handover or a second capability configuration for the MBB handover based at least in part on whether the capability of the UE is sufficient for the MBB handover.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: determine whether a capability of the UE is sufficient for an MBB handover from a source set of cells to a target set of cells, wherein the source set of cells is provided by a first set of TRPs and the target set of cells is provided by a second set of TRPs; and selectively perform the MBB handover using a first capability configuration for the MBB handover or a second capability configuration for the MBB handover based at least in part on whether the capability of the UE is sufficient for the MBB handover.

In some aspects, an apparatus for wireless communication may include means for determining whether a capability of the apparatus is sufficient for an MBB handover from a source set of cells to a target set of cells, wherein the source set of cells is provided by a first set of TRPs and the target set of cells is provided by a second set of TRPs; and means for selectively performing the MBB handover using a first capability configuration for the MBB handover or a second capability configuration for the MBB handover based at least in part on whether the capability of the apparatus is sufficient for the MBB handover.

In some aspects, a method of wireless communication performed by a first transmit/receive point (TRP) includes determining information identifying a communication schedule for a make-before-break (MBB) handover of a user equipment (UE) involving the first TRP and a second TRP; and providing the information identifying the communication schedule to the second TRP.

In some aspects, a first TRP for wireless communication includes a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: determine information identifying a communication schedule for an MBB handover of a UE involving the first TRP and a second TRP; and provide the information identifying the communication schedule to the second TRP.

In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a first TRP, cause the first TRP to determine information identifying a communication schedule for an MBB handover of a UE involving the first TRP and a second TRP; and provide the information identifying the communication schedule to the second TRP.

In some aspects, a first apparatus for wireless communication includes means for determining information identifying a communication schedule for an MBB handover of a UE involving the first apparatus and a second apparatus; and means for providing the information identifying the communication schedule to the second apparatus.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, transmit/receive point, and/or processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and specification.

The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. Characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims.

