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2.2M
be45e2bb4610a7bd5c74cdc474430cc6
138 521-2
7.1 General
........................................................................................................................................................... 610
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138 521-2
7.2 Diversity characteristics
................................................................................................................................. 611
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7.3 Reference sensitivity
...................................................................................................................................... 611
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7.3.1 General
...................................................................................................................................................... 611
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7.3.2 Reference sensitivity power level
............................................................................................................. 611
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7.3.4 EIS spherical coverage
.............................................................................................................................. 620
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7.3A Reference sensitivity for CA
.......................................................................................................................... 627
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7.3A.1 General
...................................................................................................................................................... 627
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7.3A.2 Reference sensitivity power level for CA
................................................................................................. 627
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7.3A.2.0 Minimum Conformance Requirements
............................................................................................... 627
be45e2bb4610a7bd5c74cdc474430cc6
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7.3A.2.0.1 Intra-band contiguous CA
............................................................................................................. 627
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138 521-2
7.3A.2.0.2 Intra-band non-contiguous CA
...................................................................................................... 627
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7.3A.2.0.3 Inter-band CA
................................................................................................................................ 628
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7.3A.2.1 Reference sensitivity power level for CA (2DL CA)
.......................................................................... 628
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7.3A.2.2 Reference sensitivity power level for CA (3DL CA)
.......................................................................... 633
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7.3A.2.3 Reference sensitivity power level for CA (4DL CA)
.......................................................................... 633
be45e2bb4610a7bd5c74cdc474430cc6
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7.3A.2.4 Reference sensitivity power level for CA (5DL CA)
.......................................................................... 634
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7.3A.2.5 Reference sensitivity power level for CA (6DL CA)
.......................................................................... 635
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7.3A.2.6 Reference sensitivity power level for CA (7DL CA)
.......................................................................... 635
be45e2bb4610a7bd5c74cdc474430cc6
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7.3A.2.7 Reference sensitivity power level for CA (8DL CA)
.......................................................................... 636
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7.3A.3 EIS spherical coverage for DL CA
........................................................................................................... 636
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7.3A.3.0 Minimum Conformance Requirements
............................................................................................... 636
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7.3A.3.0.1 Void
............................................................................................................................................... 636
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7.3A.3.0.2 Void
............................................................................................................................................... 636
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7.3A.3.0.3 EIS spherical coverage for inter-band CA
..................................................................................... 636
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7.3A.3.1 EIS Spherical Coverage for Inter-band CA (2DL CA)
....................................................................... 637
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7.3A.3.2 EIS Spherical Coverage for Inter-band CA (3DL CA)
....................................................................... 640
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7.3A.3.3 EIS Spherical Coverage for Inter-band CA (4DL CA)
....................................................................... 641
be45e2bb4610a7bd5c74cdc474430cc6
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7.3D Reference sensitivity for UL MIMO
.............................................................................................................. 642
be45e2bb4610a7bd5c74cdc474430cc6
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7.3K Spherical coverage requirement for simultaneous reception from multiple directions
.................................. 642 7.3K.1 Spherical coverage with two Angle of Arrivals (AoAs) with simultaneous reception from multiple directions .................................................................................................................................................. 642
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7.3K.1.0 General
................................................................................................................................................ 642
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7.3K.1.1 UE spherical coverage for simultaneous reception from multiple directions (2 AoAs)
...................... 642
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7.4 Maximum input level
..................................................................................................................................... 646
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7.4A Maximum input level for CA
......................................................................................................................... 649 3GPP TS 38.521-2 version 19.0.0 Release 19 10 ETSI TS 138 521-2 V19.0.0 (2025-10) ETSI
be45e2bb4610a7bd5c74cdc474430cc6
138 521-2
7.4A.0 Minimum Conformance Requirements
..................................................................................................... 649
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7.4A.0.1 Maximum input level for Intra-band contiguous CA
.......................................................................... 649
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7.4A.0.2 Maximum input level for Intra-band non-contiguous CA
................................................................... 649
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7.4A.0.3 Maximum input level for inter-band CA
............................................................................................. 649
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7.4A.1 Maximum input level for CA (2DL CA)
.................................................................................................. 649
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7.4A.2 Maximum input level for CA (3DL CA)
.................................................................................................. 653
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7.4A.3 Maximum input level for CA (4DL CA)
.................................................................................................. 653
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7.4A.4 Maximum input level for CA (5DL CA)
.................................................................................................. 654
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7.4A.5 Maximum input level for CA (6DL CA)
.................................................................................................. 654
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7.4A.6 Maximum input level for CA (7DL CA)
.................................................................................................. 655
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7.4A.7 Maximum input level for CA (8DL CA)
.................................................................................................. 656
be45e2bb4610a7bd5c74cdc474430cc6
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7.4D Maximum input level for UL MIMO
............................................................................................................. 656
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7.5 Adjacent channel selectivity
........................................................................................................................... 656
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7.5A Adjacent channel selectivity for CA
............................................................................................................... 662
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7.5A.0 Minimum Conformance Requirements
..................................................................................................... 662
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7.5A.0.1 Adjacent channel selectivity for Intra-band contiguous CA
............................................................... 662
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7.5A.0.2 Adjacent channel selectivity for Intra-band non-contiguous CA
........................................................ 664
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7.5A.0.3 Adjacent channel selectivity for Inter-band CA
.................................................................................. 664
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7.5A.1 Adjacent channel selectivity for CA (2DL CA)
........................................................................................ 664
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7.5A.2 Adjacent channel selectivity for CA (3DL CA)
........................................................................................ 664
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7.5A.3 Adjacent channel selectivity for CA (4DL CA)
........................................................................................ 664
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7.5A.4 Adjacent channel selectivity for CA (5DL CA)
........................................................................................ 664
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7.5A.5 Adjacent channel selectivity for CA (6DL CA)
........................................................................................ 664
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7.5A.6 Adjacent channel selectivity for CA (7DL CA)
........................................................................................ 664
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7.5A.7 Adjacent channel selectivity for CA (8DL CA)
........................................................................................ 664
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7.5D Adjacent channel selectivity for UL MIMO
................................................................................................... 665
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7.6 Blocking characteristics
................................................................................................................................. 665
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7.6.1 General
...................................................................................................................................................... 665
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7.6.2 In-band blocking
....................................................................................................................................... 665
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7.6.3 Void
.......................................................................................................................................................... 670
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7.6A Blocking characteristics for CA
..................................................................................................................... 670
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7.6A.1 General
...................................................................................................................................................... 670
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7.6A.2 In-band blocking for CA
........................................................................................................................... 670
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7.6A.2.0 Minimum Conformance Requirements
............................................................................................... 670
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7.6A.2.0.1 In-band blocking for Intra-band contiguous CA
............................................................................ 670
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7.6A.2.0.2 In-band blocking for Intra-band non-contiguous CA
.................................................................... 671
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7.6A.2.0.3 In-band blocking for Inter-band CA
.............................................................................................. 672
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7.6A.2.1 In-band blocking for CA (2DL CA)
.................................................................................................... 672
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7.6A.2.2 Void
..................................................................................................................................................... 675
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7.6A.2.3 Void
..................................................................................................................................................... 675
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7.6A.2.4 Void
..................................................................................................................................................... 675
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7.6A.2.5 Void
..................................................................................................................................................... 675
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7.6A.2.6 Void
..................................................................................................................................................... 675
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7.6A.2.7 Void
..................................................................................................................................................... 675
be45e2bb4610a7bd5c74cdc474430cc6
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7.6D Blocking characteristics for UL MIMO
......................................................................................................... 675
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7.7 Void
................................................................................................................................................................ 675
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7.8 Void
................................................................................................................................................................ 675
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7.9 Spurious emissions
......................................................................................................................................... 675
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7.10 Void
................................................................................................................................................................ 678 Annex A (normative): Measurement channels ................................................................................ 679 A.1 General ...................
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183 022
1 Scope
The present document describes an extension to ITU-T Recommendation H.248.1 [1] gateway protocol to enable a Call Agent/MGC to store data on a MG that can be subsequently retrieved to facilitate MGC recovery action. The standard H248 audit mechanism permits a MGC to retrieve data from an associated MG in order to re-sy...
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2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • ...
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3 Abbreviations
For the purposes of the present document, the following abbreviations apply: AGW Access GateWay CIC Call Identification Code GW GateWay ISUP ISDN User Part LCD Local Control Descriptor MG Media Gateway MGC Media Gateway Controller REL RELease message SDP Session Description Protocol SS7 Signalling System No. 7 TGW Trun...
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4 MGC information package
PackageID: MGCInfo (0xTBA). Version: 1. Description: This package enables the MGC to store an opaque data block against a physical or ephemeral termination in the MG. Extends: None.
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4.1 Properties
Data Block PropertyID: db (0x0001). Description: This property holds the MGC Recovery Information data block. Type: Octet String. Possible Values: A range of 0 to 128 characters. The range can be modified in the appropriate H248 profile which defines the application which utilizes this property. Defined In: Local Contr...
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4.2 Events
None.
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4.3 Signals
None.
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4.4 Statistics
None.
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4.5 Procedures
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4.5.1 Setting the property
The property is set by the MGC when a termination (either physical or ephemeral) is placed into a non-null context. Having been initially set, it is permissible for the MGC to subsequently modify the property by overwriting the previous setting.
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4.5.2 Resetting the property
The property is reset to its default value when a physical termination is moved into the null context. For ephemeral terminations, the property shall be set to the default value when the ephemeral is created and no string has been supplied by the MGC. ETSI ETSI TS 183 022 V1.1.1 (2005-06) 7
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4.5.3 Retreiving the property
The property is retrieved by the MGC in the event of an MGC failure. The retrieval is performed via the H248 audit mechanism. The property is part of the Local Control Descriptor (LCD) and is thus retrieved using the AuditValue command that specifies a specific termination id and theMedia Descriptor (which contains the...
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4.5.4 Example scenario
Consider a stable call/connection between a TGW and an AGW – both GWs being under the control of a single MGC. During the supervision phase, the MGC suffers a failure/disturbance and loses its transient memory. H248 H248 IP N/W GW GW MGC Figure 1: Example of scenario where GWs are controlled by MGC As part of its norma...
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1 Scope
........................................................................................................................................................6
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2 References
................................................................................................................................................6
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3 Definitions and abbreviations
..................................................................................................................6
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3.1 Definitions
............................................................................................................................................................... 6