FCC ID: TA8AKRC161711-1 Remote Radio Unit

Date Page Exhibit 3 External photos 10/30/2019 1(4) FCC ID: TA8AKRC161711-1 Front side Date Page Exhibit 3 External photos 10/30/2019 2(4) FCC ID: TA8AKRC161711-1 Rear side Date Page Exhibit 3 External photos 10/30/2019 3(4) FCC ID: TA8AKRC161711-1 Left side Right side Date Page Exhibit 3 External photos 10/30/2019 4(4) FCC ID: TA8AKRC161711-1 Top side Bottom side

Exhibit 1 ID label and placement Date 10/30/2019 Page 1(1) FCC ID: TA8AKRC161711-1 FCC ID: TA8AKRC161711-1

External Confidentiality Label Document Type Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference External Antenna List Ericsson AB requests to authorize additional antennas for Part 96 operations with the FCC Hardware Certified Part 96 CBSD radio device. Sheet 1 (6) Checked Radio Vendor:

Radio Product Name: Radio 2208 B48 Radio Model Number: KRC 161 711/1 Ericsson AB TA8AKRC161711-1 Radio FCC ID:

Radio dynamic range:

Maximum linear conducted power rating at output connector into 50 ohms that meets all OOBE requirements [zero additional attenuation, highest power setting allowed, for use with lowest gain external antennas] (dBm): 40dBm per port or 43 dBm total power Minimum linear conducted power rating at output connector into 50 ohms that meets all OOBE requirements [maximum additional linear attenuation, lowest power setting allowed, for use with highest gain external antennas] (dBm): 10dBm per port or 13 dBm total power Note: use of an external cable introduces additional losses that may be compensated appropriately by increasing the radios power level (reducing the attenuator setting). This cable compensation may be achieved during radio setup. The Original Equipment Manufacturer (OEM) vendor of the radio states that the use of the following listed external antennas meets all requirements for Part 96 operations. The following specific external antennas may be used in conjunction with this model radio at the appropriate listed power settings. These antennas will allow this radio to meet the appropriate Part 96 requirements for Maximum EIRP, at below:

30 dBm EIRP (for Category A operations), or 47 dBm/10MHz EIRP (for Category B operations). Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference Total conducted power is shown, for each antenna, with varying signal operating bandwidths. Sheet 2 (6) Checked Table: CBRS Band 48 External antennas authorized by the Original Equipment Manufacturer for use with this radio:

Antenna Configuration Antenna Vendor Antenna Model Number Antenna Main Beam Peak LTE Carrier Maximum Total Conducted Gain

[dBi]

Bandwidth

[MHz]

Power

[dBm]

EIRP

[dBm/10MHz]

EIRP per Bandwidth

[dBm]

Operational Category

[A / B]

JMA JMA JMA JMA JMA JMA JMA CX14OMI236-1C CX16OMI236-1C CX16OMI224-1H CX16OMI218-1P CX04OMI336-1C MX02FIT365-01 MX04FIT365-01 JMA DX10FRO260-00 or 06 15.5 JMA DX12FRO260-20 or 26 14.8 5 5 6.1 5.3 12 17.8 17.8 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 42 43 42 43 40.9 43 41.7 43 31.5 34.5 32.2 35.2 35 38 29.2 32.2 29.2 32.2 47 45 47 45 47 46.1 47 45.3 47 47 47 47 47 47 47 47 47 47 47 48 47 48 47 49.1 47 48.3 47 50 47 50 47 50 47 50 47 50 B B B B B B B B B 1 2 3 4 5 6 7 8 9 Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference 10 11 12 13 14 15 16 17 18 19 20 21 22 Amphenol C2U3MT360X06Fxys0 Amphenol 2C2U3MT360X06Fxys0 Amphenol 4U4MT360X06Fxys0 Amphenol 2C4U3MT360X06Fwxys0 Amphenol 2U3MX065X06Fxys0 11.6 Amphenol 4U4MX065X06Fxys0 11.3 Amphenol 2C4U3MX065X06Fwxys0 8.9 Kathrein 84010555 / 84010556 Kathrein 84010557 / 84010558 Kathrein 84010603 / 84010604 Kathrein 84010564 Kathrein Kathrein 80010922 800250911 8.1 5.8 5.7 5.9 7 6.3 6.5 11.5 18 16.1 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 38.9 41.9 41.2 43 41.3 43 41.3 43 35.4 38.4 35.7 38.7 38.1 41.1 40 43 40.7 43 40.5 43 35.5 38.5 29 32 30.9 47 47 47 45.8 47 45.7 47 45.7 47 47 47 47 47 47 47 47 47 46.3 47 46.5 47 47 47 47 47 Sheet 3 (6) Checked 47 50 47 48.8 47 48.7 47 48.7 47 50 47 50 47 50 47 50 47 49.3 47 49.5 47 50 47 50 47 B B B B B B B B B B B B B Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference 23 24 25 26 27 28 29 30 31 32 33 34 Kathrein 84010601 / 84010602 7.2 Kathrein 80010249 Kathren 80010430 CommScope VVSSP-360S-F CommScope NNVVSSP-360S-FM CommScope V4SSPP-360S-F CommScope CommScope VVSSP-65S-R1B

(Canister) VVSSP-65S-R1BV2

(Panel) CommScope SSPX31OR-V2 CommScope S-65M-R1 CommScope SS-360S-F MobileMark EDN32-3700 2 2 4.9 5.7 5.4 9.8 10.4 18.1 18.1 11.3 5 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 33.9 39.8 42.8 43 43 43 43 42.1 43 41.3 43 41.6 43 37.2 40.2 36.6 39.6 28.9 31.9 28.9 31.9 35.7 38.7 42 43 47 47 47 45 42 45 42 47 44.9 47 45.7 47 45.4 47 47 47 47 47 47 47 47 47 47 47 45 Sheet 4 (6) Checked 50 47 50 45 45 45 45 47 47.9 47 48.7 47 48.4 47 50 47 50 47 50 47 50 47 50 47 48 B B B B B B B B B B B B Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference Sheet 5 (7) Checked 35 36 37 38 39 40 41 42 43 44 45 46 47 Rosenberger CA-AEOIOITJTJVEX360F-

JS06 Rosenberger BA-T8T8X65V-01 Rosenberger BA-T8X65V-01 Alpha Alpha Alpha Alpha Alpha Alpha Alpha Alpha Alpha Alpha AW3014 AW3023 AW3056 AW3089 AW3159 AW3161 AW3523 AW3625 AW3647 AW3672 9 18 18 18 18 19.5 11 17.3 17.9 18.6 8.5 19.5 8.5 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 38 41 29 32 29 32 29 32 29 32 27.5 30.5 36 39 29.7 32.7 29.1 32.1 28.4 31.4 38.5 41.5 27.5 30.5 38.5 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 B B B B B B B B B B B B B Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference Sheet 6 (6) Checked Alpha AW3711 CellMax CellMax CellMax CellMax 12004v 13006v 12010v 13011v PCTEL SP333817XP65 PCTEL SP333816QP90 DenkiKogyo DK16WDYKDP10R86F DenkiKogyo DK18BDYKDP8R54F DenkiKogyo DKOBDYKDP7R45F 20.2 19.9 21.1 19.9 21.1 17 16 5 5 3 Galtronics EXTENTP6612 8.5 48 49 50 51 52 53 54 55 56 57 58 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 41.5 26.8 29.8 27.1 30.1 25.9 28.9 27.1 30.1 25.9 28.9 30 33 31 34 42 43 42 43 43 43 38.5 41.5 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 45 47 45 46 43 47 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 48 47 48 46 46 47 50 B B B B B B B B B B B

Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Sheet 1 (3) Checked Reference Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Attention: Equipment Authorization Branch Subject: Permissive Change Request for FCC ID: TA8AKRC161711-1 To Whom It May Concern Ericsson AB requests a Class II Permissive Change for Part 96 operations with the FCC Hardware Certified Part 96 CBSD radio device. Radio Vendor:

Radio Product Name: Radio 2208 B48 Radio Model Number: KRC 161 711/1 Ericsson AB TA8AKRC161711-1 Radio FCC ID:

The major changes filed under this application are:

Change #1:

Addition of new Domain Proxy to run with this radio (3550-3700 MHz). There are no changes to the HW or RF performance of this radio compared to the initial certification. The only update is a different SW for the domain proxy. Change #2:

To authorize additional external antennas for this radio. Radio dynamic range:

Maximum linear conducted power rating at output connector into 50 ohms that meets all OOBE requirements [zero additional attenuation, highest power setting allowed, for use with lowest gain external antennas] (dBm): 40dBm per port or 43 dBm total power Minimum linear conducted power rating at output connector into 50 ohms that meets all OOBE requirements [maximum additional linear attenuation, lowest power setting allowed, for use with highest gain external antennas] (dBm): 10dBm per port or 13 dBm total power Note: use of an external cable introduces additional losses that may be compensated appropriately by increasing the radios power level (reducing the attenuator setting). This cable compensation may be achieved during radio setup. The Original Equipment Manufacturer (OEM) vendor of the radio states that the use of the following listed external antennas meets all requirements for Part 96 operations. The following specific external antennas may be used in conjunction with this model radio at the appropriate listed power settings. These antennas will allow this radio to meet the appropriate Part 96 requirements for Maximum EIRP, at below:

30 dBm EIRP (for Category A operations), or 47 dBm/10MHz EIRP (for Category B operations) Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Sheet 2 (3) Checked Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference Total conducted power is shown, for each antenna, with varying signal operating bandwidths. Table: CBRS Band 48 External antennas authorized by the Original Equipment Manufacturer for use with this radio Antenna Vendor Antenna Model Number Antenna Main Beam Peak Gain LTE Carrier Bandwidth Maximum Total Conducted Power

[dBi]

[MHz]

[dBm]

EIRP

[dBm/10MHz]

EIRP per Bandwidth

[dBm]

Operational Category

[A / B]

JMA CX04OMI336-1C 12 JMA MX02FIT365-01 17.8 JMA MX04FIT365-01 17.8 Kathrein 80010922 18 Kathrein 800250911 16.1 Kathrein 84010601 / 84010602 7.2 Kathrein 80010249 Kathren 80010430 CommScope S-65M-R1 CommScope SS-360S-F Rosenberger BA-T8T8X65V-01 Rosenberger BA-T8X65V-01 Alpha AW3014 Alpha AW3023 Alpha AW3056 Alpha AW3089 Alpha AW3159 Alpha AW3161 Alpha AW3523 2 2 18.1 11.3 18 18 18 18 19.5 11 17.3 17.9 18.6 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 35 38 29.2 32.2 29.2 32.2 29 32 30.9 33.9 39.8 42.8 43 43 43 43 28.9 31.9 35.7 38.7 29 32 29 32 29 32 29 32 27.5 30.5 36 39 29.7 32.7 29.1 32.1 28.4 31.4 47 47 47 47 47 47 47 47 47 47 47 47 45 42 45 42 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 50 47 50 47 50 47 50 47 50 47 50 45 45 45 45 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 B B B B B B B B B B B B B B B B B B B Confidentiality Class Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 External Confidentiality Label Document Type Sheet 3 (3) Checked Approved By (Document Responsible) Hua Yang Revision A Date 2020-04-07 Reference Alpha AW3625 Alpha AW3647 Alpha AW3672 Alpha AW3711 CellMax 12004v CellMax 13006v CellMax 12010v CellMax 13011v PCTEL SP3338-17XP65 PCTEL SP3338-16QP90 Denki Kogyo DK16WDYKDP-

10R86F Denki Kogyo DK18BDYKDP-8R54F Denki Kogyo DKOBDYKDP-7R45F 8.5 19.5 8.5 20.2 19.9 21.1 19.9 21.1 17 16 5 5 3 Galtronics EXTENT P6612 8.5 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 10 20 38.5 41.5 27.5 30.5 38.5 41.5 26.8 29.8 27.1 30.1 25.9 28.9 27.1 30.1 25.9 28.9 30 33 31 34 42 43 42 43 43 43 38.5 41.5 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 45 47 45 46 43 47 47 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 50 47 48 47 48 46 46 47 50 B B B B B B B B B B B B B B

A Approved By (Document Responsible) Hua Yang Checked Revision Date Reference 2020-04-07 Page 1 (1) Confidentiality Class External Confidentiality Label Document Type Ericsson Internal Prepared By (Subject Responsible) EHUAYAN Document Number TA8AKRC161711-1 Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Attention: Equipment Authorization Branch Subject: Request for Confidentiality FCC ID: TA8AKRC161711-1 To Whom It May Concern:

We, Ericsson AB, hereby request that the Exhibits/Items listed below be withheld from public inspection in accordance with Sections 0.457 and 0.459 of the Commissions Rules for FCC. This due to the following reasons:

This Base Stations (BS) are designed strictly based on the technical specifications of the international project 3GPP (the 3rd Generation Partnership Project). The competition in this field is very intense and a less advanced solution/design could get an unfair advantage by accessing the information as listed below from common domain. As we believe that we have implemented groundbreaking solutions and designs into our recent BS/Radio Unit (RU) / Remote Radio Unit (RRU) / Radio DoT (RD) compared to the previous BS/RU/RRU/RD, the listed Exhibits/Items need to be protected from disclosure to our competitors in the industry. As the FCC records have in-depth information and a very wide distribution, we believe that you can understand our concerns. We are strong in our belief that all vendors in the industry need to compete by their own merits. We regard these Exhibits/Items to be our intellectual property and therefore as confidential information. There are advanced technical and design solutions/information in the Exhibits/Items, as mentioned above, that we regard as Ericsson proprietary, with actual and potential patents pending. The information can be advantageous to our competitors as well as sources seeking ways to hack past the built-in security functionality. These solutions or information thereof are not accessible even for our customers or partners unless non-disclosure agreements for particular item(s) have been signed. Confidential product information can be found in, but not necessarily limited to, internal photos of the BS, RU, RRU and RD, block diagrams, schematics diagrams, and parts lists as well as certain documents, such as the users manuals. Those documents can only be accessible by the customers who purchase our BS/RU/RRU/RD and accept the conditions and therefore are provided with unique information access tools. EXHIBIT 12 Technical Circuit Description Hua Yang Staff Engineer, Regulatory Programs Ericsson AB FCC Registration Number (FRN): 0013476155 Isafjordsgatan 10 Kista, SE-164 80 Stockholm, Sweden Telephone No.: +86 10 8476 7133 e-mail: hua.yang@ericsson.com

Ericsson Internal No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 1 (1) Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Attention: Equipment Authorization Branch Subject: Certification for FCC ID: TA8AKRC161711-1 To Whom It May Concern:

Ericsson AB requests a Grant of Certification (Type Acceptance) for the above mentioned FCC Identifier. The radio operates in the Cellular band as per 47 CFR Part 90 Subpart Z. This radio (Radio 2208 B48) is designed for use in LTE cellular telephone system. This TDD radio operates in Band 48, the transmitter and receiver operate from 3650 MHz to 3675. It supports channel bandwidths of 5 MHz and 20 MHz, modulation types of QPSK, 16QAM, 64QAM and 256 QAM for LTE. This radio has the ability to be used in a RBS system configured for 3GPP MIMO/Spatial multiplexing and beam-

forming technologies for LTE. The radio also supports CBRS (Citizens Broadband Radio Service). This radio will in normal mode operates at a maximum power of 5W per port at the output connector. The radio has 2 TX ports. Professional Installation mechanism secure installation must be controlled and implemented by licensed professionals. The Exhibit 8 user manuals submitted with this application is generic and may cover multiple products. This application is only valid for the model specified in the Exhibit 12 circuit description. This radio must always be powered by an AC or DC PSU approved by Ericsson. Only antennas listed in Exhibit 8 RF Electromagnetic Field are supported by Ericsson and covered by EMF testing. All other antennas are subject to Site Licensing terms. Ericsson AB requests confidentiality under CFR 0.459 according to attached letter. We further certify that the applicant nor any party to the application is subject to a denial of Federal benefits, that includes FCC benefits, pursuant to section 5301 of the Anti-Drug abuse Act of 1988, 21 U.S.C. Section 862. If additional information is needed, please contact me on the below listed number. Hua Yang Staff Engineer, Regulatory Programs Ericsson AB Isafjordsgatan 10 Kista, SE-164 80 Stockholm Sweden Telephone No.: +86 10 8476 7133 e-mail: hua.yang@ericsson.com

No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 1 (3) Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Attention: Equipment Authorization Branch October 30, 2019 Subject: Request for Limited Single-Modular Transmitter certification We, Ericsson AB, request permission to use Limited Single-Modular Transmitter certification. Legend:

C = Compliant in full NC = Not Compliant in full, explanation given as comments below the chapter Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 2 (3) 1 FCC ID: TA8AKRC161711-1 Extract from KDB 996369 D01 Module Equip Auth Guide v02 A single-modular transmitter is a self-contained, physically delineated, component for which compliance can be demonstrated independent of the host operating conditions, and which complies with all eight requirements of 15.212(a)(1) as summarized below. See 15.212 for more detailed information, and 2.901, et seq., for general certification requirements. 1) C The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly;

2) C The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal;

3) NC The module must contain power supply regulation on the module;

4) NC The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per 15.203, 15.204(b), 15.20 4(c), 15.212(a), 2.929(b);

5) C The module must demonstrate compliance in a stand-alone configuration;

6) C The module must be labeled with its permanently affixed FCC ID label, or use an electronic display

(see KDB Publication 784748);

7) C The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee;

8) NC The module must comply with RF exposure requirements (see Clause V below). Explanation for items marked as NC = Not Compliant in full Ericsson Approved and Supplied PSU compatible with Radio 2208 is required for use in all installations with the listed module. Ericsson approved antennas, compatible with Radio 2208, listed in user manual document are covered by compliance testing against 47 CFR 1.1310 and 2.1091 for this module. Use of other antennas requires that the RF Exposure compliance is addressed at the time of Licensing according to national/regional regulations. Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 3 (3) If additional information is needed, please contact me on the below listed number. Hua Yang Staff Engineer, Regulatory Programs Ericsson AB FCC Registration Number (FRN): 0013476155 Isafjordsgatan 10 Kista, SE-164 80 Stockholm Sweden Telephone No.: +86 10 8476 7133 e-mail: hua.yang@ericsson.com

Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang Ericsson Internal No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 1 (4) Restricted Contention-based Protocol Description for FCC ID: TA8AKRC161711-1 1. Restricted Protocol Description Radio 2208 B48 is designed for use in LTE cellular telephone system. This TDD radio operates in Band 48, the transmitter and receiver operate from 3650 MHz to 3675 MHz. The transmitter and receiver work as LTE eNodeB required according to LTE TDD protocol 3GPP. The following synchronized TDD frame diagram is used to allow satisfactory sharing of the spectrum with similar systems. As refer in 3GPP TS 36.211, Frame structure type 2 is applicable to TDD. Each radio frame of length consists of two half-frames of length each. Each half-

frame consists of five subframes of length

. Each subframe is defined as two slots, and

, of length each. The supported uplink-downlink configurations are listed in Table 1 where, for each subframe in a radio frame, "D" denotes a downlink subframe reserved for downlink transmissions, "U" denotes an uplink subframe reserved for uplink transmissions and "S" denotes a special subframe with the three fields DwPTS, GP and UpPTS. The length of DwPTS and UpPTS is given by Table 2 subject to the total length of DwPTS, GP and UpPTS being equal to Uplink-downlink configurations with both 5 ms and 10 ms downlink-to-uplink switch-point periodicity are supported.

In case of 5 ms downlink-to-uplink switch-point periodicity, the special subframe exists in both half-frames.

In case of 10 ms downlink-to-uplink switch-point periodicity, the special subframe exists in the first half-frame only. Subframes 0 and 5 and DwPTS are always reserved for downlink transmission. UpPTS and the subframe immediately following the special subframe are always reserved for uplink transmission. Figure 1: Frame structure type 2 (for 5 ms switch-point periodicity) Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang Ericsson Internal No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 2 (4) Table 1: Uplink-downlink configurations Uplink-downlink configuration Downlink-to-Uplink Switch-point periodicity 0 D D D D D D D 5 ms 5 ms 5 ms 10 ms 10 ms 10 ms 5 ms 1 S S S S S S S 2 U U U U U U U Subframe number 6 3 U S S U S D D U D U D D S U 5 D D D D D D D 4 U D D U D D U 7 U U U D D D U 8 U U D D D D U 9 U D D D D D D Table 2: Configuration of special subframe (lengths of DwPTS/GP/UpPTS) Special subframe configuration Normal cyclic prefix in downlink Extended cyclic prefix in downlink DwPTS UpPTS DwPTS UpPTS Normal cyclic Extended cyclic prefix in uplink prefix in uplink Normal cyclic prefix in uplink Extended cyclic prefix in uplink 6592 T s 19760 T s 21952 T s 24144 T s 26336 T s 6592 T s 19760 T s 21952 T s 24144 T s 13168 T s 2192 T s 2560 T s 2192 T s 2560 T s 4384 T s 5120 T s 4384 T s 5120 T s

7680 T s 20480 T s 23040 T s 25600 T s 7680 T s 20480 T s 23040 T s 12800 T s

0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 8 9 OFDM has been adopted as the downlink transmission scheme for the 3GPP Long-Term Evolution

(LTE). As TDD LTE system, Radio 2208 downlink transmission scheme is also based on OFDM. Transmission by means of OFDM can be seen as a kind of multi-carrier transmission. The 'physical resource' in case of OFDM transmission is often illustrated as a time-frequency grid according to Figure 2 where each 'column' corresponds to one OFDM symbol and each 'row' corresponds to one OFDM subcarrier. Time (OFDM symbol number) Figure 2 OFDM time-frequency grids In contrast to the kind of multi-carrier transmission, any corruption of the frequency-domain structure of the OFDM subcarriers, e.g. due to a frequency selective radio channel, may lead to a loss of inter-

subcarrier orthogonality and thus to interference between subcarriers. To handle this and to make Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang Ericsson Internal No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 3 (4) an OFDM signal truly robust to radio-channel frequency selectivity, cyclic-prefix insertion is typically used. To deal with this problem and to make an OFDM signal truly insensitive to time dispersion on the radio channel, so-called cyclic-prefix insertion is typically used in case of OFDM transmission. As illustrated in Figure 3, cyclic-prefix insertion implies that the last part of the OFDM symbol is copied and inserted at the beginning of the OFDM symbol. Cyclic-prefix insertion thus increases the length of the OFDM symbol from Tu to Tu +Tcp, where Tcp is the length of the cyclic prefix, with a corresponding reduction in the OFDM symbol rate as a consequence. Figure 3 Cyclic-prefix insertion Cyclic-prefix insertion is beneficial in the sense that it makes an OFDM signal insensitive to time dispersion as long as the span of the time dispersion does not exceed the length of the cyclic prefix. In general, there is a trade-off between the power loss due to the cyclic prefix and the signal corruption (inter-symbol and inter-subcarrier interference) due to residual time dispersion not covered by the cyclic prefix and, at a certain point, further reduction of the signal corruption due to further increase of the cyclic-prefix length will not justify the corresponding additional power loss. This also means that, although the amount of time dispersion typically increases with the cell size, beyond a certain cell size there is often no reason to increase the cyclic prefix further as the corresponding power loss due to a further increase of the cyclic prefix would have a larger negative impact, compared to the signal corruption due to the residual time dispersion not covered by the cyclic prefix. Due to the relatively long OFDM symbol time in combination with a cyclic prefix, OFDM provides a high degree of robustness against channel frequency selectivity. Although signal corruption due to a frequency-selective channel can, in principle, be handled by equalization at the receiver side, the complexity of the equalization starts to become unattractively high for implementation in a mobile terminal at bandwidths above 5 MHz. Therefore, OFDM with its inherent robustness to frequency-

selective fading is attractive for the downlink, especially when combined with spatial multiplexing. Equivalence as seen from the RRN Figure 4 Equivalence between simulcast transmission and multi-path propagation Prepared (also subject responsible if other) EHUAYAN Approved Hua Yang Ericsson Internal No. TA8AKRC161711-1 Rev Date A 2019-10-30 Checked Reference 4 (4) One way to improve the provisioning of broadcast/multicast services in a network is to ensure that the broadcast transmissions from different cells are truly identical and transmitted mutually time aligned. In this case, the transmissions received from multiple cells will appear as a single transmission subject to severe multi-path propagation as illustrated in Figure 4. In case of such identical time-aligned transmissions from multiple cells, the 'intercell interference'

due to transmissions in neighbouring cells will, from a terminal point of view, be replaced by signal corruption due to time dispersion. If the broadcast transmission is based on OFDM with a cyclic prefix that covers the main part of this 'time dispersion', the achievable broadcast data rates are thus only limited by noise, implying that, especially in smaller cells, very high broadcast data rates can be achieved. The OFDM receiver does not need to explicitly identify the cells to be soft combined. Rather, all transmissions that fall within the cyclic prefix will 'automatically' be captured by the receiver. 2. Describe the method to permit occupancy. As a client device, the occupancy of traffic requirement brought up by client device and the time slots are arranged by eNodeB (the master). 3. Describe the action taken if two or more transmitters simultaneously access the same channel by the master and the client devices. Radio 2208 is LTE client device; 2 transmitters simultaneously access the channel will occur at the access stage. LTE PHY level random access procedure is used to solve the conflict. When there are conflicts between client devices. The client devices will make a random back-off for another access. 4. Describe opportunities for other similar systems to operate address how, or if, a different system operator using the same technology can operate in the same band. The radio interference to other LTE devices connected to the eNodeBs in the same system cased by Radio 2208 is avoided by eNodeBs side with TDD synchronization mechanism. The radio interference mitigation to the LTE devices connected to the eNodeBs not in the same system

(inter-system) cased by Radio 2208 should be designed and deployed by the eNodeBs in different systems. Normally eNodeB avoid inter-system interference by synchronization, ATPC, RNP (Radio Network Planning), space isolation etc. methods.

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Prepared (also subject responsible if other) EHUAYAN Approved CBC/XRV/D Hua Yang Ericsson Internal EXHIBIT 13 No. TA8AKRC161472-3 Date 2018-07-30 Rev A Checked Reference 1 (2) Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046, USA Attention: Equipment Authorization Branch Subject: Request for Confidentiality FCC ID: TA8AKRC161711-1

To Whom It May Concern:

We, Ericsson AB, hereby request that the Exhibits/Items listed below be withheld from public inspection in accordance with Sections 0.457 and 0.459 of the Commissions Rules for FCC. This due to the following reasons:

This Base Stations (BS) are designed strictly based on the technical specifications of the international project 3GPP (the 3rd Generation Partnership Project). The competition in this field is very intense and a less advanced solution/design could get an unfair advantage by accessing the information as listed below from common domain. As we believe that we have implemented groundbreaking solutions and designs into our recent BS/Radio Unit (RU) / Remote Radio Unit (RRU) / Radio DoT (RD) compared to the previous BS/RU/RRU/RD, the listed Exhibits/Items need to be protected from disclosure to our competitors in the industry. As the FCC records have in-depth information and a very wide distribution, we believe that you can understand our concerns. We are strong in our belief that all vendors in the industry need to compete by their own merits. We regard these Exhibits/Items to be our intellectual property and therefore as confidential information. There are advanced technical and design solutions/information in the Exhibits/Items, as mentioned above, that we regard as Ericsson proprietary, with actual and potential patents pending. The information can be advantageous to our competitors as well as sources seeking ways to hack past the built in security functionality. These solutions or information thereof are not accessible even for our customers or partners unless non-disclosure agreements for particular item(s) have been signed. Confidential product information can be found in, but not necessarily limited to, internal photos of the BS, RU, RRU and RD, block diagrams, schematics diagrams, and parts lists as well as certain documents, such as the users manuals. Those documents can only be accessible by the customers who purchase our BS/RU/RRU/RD and accept the conditions and therefore are provided with unique information access tools. EXHIBIT 4 Block Diagrams EXHIBIT 5 Schematics EXHIBIT 8 Manuals EXHIBIT 9 Internal Photos EXHIBIT 10 Parts List EXHIBIT 12 Technical Circuit Description Hua Yang Prepared (also subject responsible if other) EHUAYAN Approved CBC/XRV/D Hua Yang Ericsson Internal EXHIBIT 13 No. TA8AKRC161472-3 Date 2018-07-30 Rev A Checked Reference 2 (2) Staff Engineer, Regulatory Programs Ericsson AB FCC Registration Number (FRN): 0013476155 Isafjordsgatan 10 Kista, SE-164 80 Stockholm Sweden Telephone No.: +86 10 8476 7133 e-mail: hua.yang@ericsson.com

Prepared (also subject responsible if other) EHUAYAN Approved CBC/XRV/D Hua Yang Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Attention: Equipment Authorization Branch Checked Reference EXHIBIT 2 No. TA8AKRC161711-1 Rev Date A 2018-07-05 1 (3) July 05, 2018 Subject: Request for Limited Single-Modular Transmitter certification We, Ericsson AB, request permission to use Limited Single-Modular Transmitter certification. Legend:

C = Compliant in full NC = Not Compliant in full, explanation given as comments below the chapter Prepared (also subject responsible if other) EHUAYAN Approved CBC/XRV/D Hua Yang EXHIBIT 2 No. TA8AKRC161711-1 Rev Date A 2018-07-05 Checked Reference 2 (3) 1 FCC ID: TA8AKRC161711-1 Extract from KDB 996369 D01 Module Equip Auth Guide v02 A single-modular transmitter is a self-contained, physically delineated, component for which compliance can be demonstrated independent of the host operating conditions, and which complies with all eight requirements of 15.212(a)(1) as summarized below. See 15.212 for more detailed information, and 2.901, et seq., for general certification requirements. 1) C The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly;

2) C The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal;

3) NC The module must contain power supply regulation on the module;

4) NC The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per 15.203, 15.204(b), 15.20 4(c), 15.212(a), 2.929(b);

5) C The module must demonstrate compliance in a stand-alone configuration;

6) C The module must be labeled with its permanently affixed FCC ID label, or use an electronic display

(see KDB Publication 784748);

7) C The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee;

8) NC The module must comply with RF exposure requirements (see Clause V below). Explanation for items marked as NC = Not Compliant in full Ericsson Approved and Supplied PSU compatible with Radio 2208 is required for use in all installations with the listed module. Ericsson approved antennas, compatible with Radio 2208, listed in user manual document Radio Frequency Electromagnetic Exposure 5/124 46-LZA 701 6001 are covered by compliance testing against 47 CFR 1.1310 and 2.1091 for this module. Use of other antennas requires that the RF Exposure compliance is addressed at the time of Licensing according to national/regional regulations. Prepared (also subject responsible if other) EHUAYAN Approved CBC/XRV/D Hua Yang EXHIBIT 2 No. TA8AKRC161711-1 Rev Date A 2018-07-05 Checked Reference 3 (3) If additional information is needed, please contact me on the below listed number. Hua Yang Staff Engineer, Regulatory Programs Ericsson AB FCC Registration Number (FRN): 0013476155 Isafjordsgatan 10 Kista, SE-164 80 Stockholm Sweden Telephone No.: +86 10 8476 7133 e-mail: hua.yang@ericsson.com